Top-Voted Stories

A list of the stories live on the site voted 4.0+ stars (with 5+ votes).

980 stories found. Total word count: 12,951,587.

• Dick note by Thorn  CockUp Cock  Waking up from an odd dream, Forest awakens to find something is in his backpack. Added Jan 2021 Updated Jun 2021 6 parts 31,185 words 14,802 views 5.0 stars (45 votes)
• Bali encounter by LenZelig  Cock Musc Virgin Inc Twins Bi Het  On a trip to Bali, a happily married couple, Pete and Lori, encounter a pair of irresistibly beautiful muscle twins named Wayan and Kadek, and then their family and friends… and things become deliciously complicated. Added Nov 2017 Updated Dec 2017 2 parts 29,433 words 9,525 views 5.0 stars (37 votes)
• Drawn together by Johnny29  Cock MuscUp Musc  Mike and John were instantly compatible as friends, lovers, and workout buddies, especially since both yearned for superhero-like bodies. Good thing the mysterious offer to help them achieve their dreams came to both of them together. Added Sep 2012 7 parts 13,924 words 22,721 views 5.0 stars (27 votes)
• Toy story by LenZelig  MuscUp Musc AgeDiff Inc Dad Twins Andr Space  During a storm Bob stumbles across a strange webpage offering something called “The Ultimate Sex Machine”. Intrigued, he clicks “order”, expecting maybe a sophisticated sex toy. Instead he gets Randy, a hunk-shaped machine dedicated to ensuring that Bob experiences ultimate sexual possibilities from now on and willing to reshape reality to make it happen. Added Jul 2002 2 parts 6,947 words 24,086 views 5.0 stars (50 votes)
• Ad man by FanTCMan  CockUp Cock HyCock HyCum 2Gay HyMusc MuscUp Musc Hairier Nonc Infect  Powerful ad exec Tucker needs the help of one of his reps, an amateur bodybuilder named Larry, to break into the sports and fitness market. Larry takes the initiative and offers to help a potential client test their new supplement, and the results aren't what Tucker or Larry expect. Added Dec 2003 8,642 words 63,726 views 5.0 stars (30 votes)
• Best birthday ever by TheSizeKing  CockUp Balls Cock HyCock Self MuscUp  Zac is already above average. But when his birthday comes around, he gets everything he wishes for and then some. Added Feb 2020 5 parts 14,872 words 17,544 views 5.0 stars (28 votes)
• Hulkster and Hoppy by Also Known As  CockUp Cock MuscUp Scent Libido Handsomer Grad Taller PSD SizeUp  Jeremy “Hoppy” Hopkins and Alexander “The Hulkster” Hogan were best friends in high school, but at the twenty-year reunion, the Hulkster discovers what Hoppy has been up to all those years in-between. Added Feb 2021 Updated Jul 2021 23 parts 118,666 words 18,786 views 5.0 stars (51 votes)
• The heart is a muscle by Mikeytron  MuscUp Musc Grad  A muscle growth bildungsroman: shy small nerd meets his college roommate, who’s friendly, confident, and fucking huge. Growth occurs, both emotional and physical, over the course of their first year together. Added Jun 2021 Updated Jul 2021 5 parts 26,357 words 11,335 views 5.0 stars (43 votes)
• From the files of the Magic Misuse Office by BRK  CockUp Cock XCock XHead XArms XLimb XTorso Rep 2Gay MuscUp Libido Tf SocMed Inc Twins Merg M/M M/M/M  High-ranking magilegal investigator Liam O'Brien reports on a YouTube video in which twin college students have an illicitly magical effect on anyone watching. Added Sep 2017 Updated Jul 2018 4 parts 13,949 words 12,675 views 4.9 stars (29 votes)
• Click bate by Dream Big  CockUp Cock HyCock Self AI Pandem  Andy didn’t remember ordering this weird butt and cock pleasuring equipment, but, hey, it looked like it might be fun to play with… Added Nov 2020 Updated Mar 2021 24 parts 19,898 words 13,459 views 4.9 stars (28 votes)
• Porn can be healthy by Egi  CockUp Cock HyCock HyCum Infect  Zack is a healthy, horny young man who, like any other boy, likes to look at porn. Always one for novelty, Zack comes across the perfect website for him and his needs! Added May 2017 2 parts 8,693 words 21,629 views 4.9 stars (28 votes)
• One hot summer by BRK  AlwHard CockUp Cock Self Mental MuscUp Musc NoShirts Grad Taller Hairier Inc Bro Twins Nonc Pride Weed  Brandon and Eddie enjoy working for their pot-loving boss, Mike, at the pizza place near campus and are bummed they can’t stick around for the summer, too. Mike offers them a possible solution, though he doesn’t let them in on all his plans for the coming summer. Added Jun 2019 Updated Jun 2021 36 parts 76,165 words 33,163 views 4.9 stars (27 votes)
• grUV by quickquezzed  CockUp Cock HyCock Self MuscUp Musc SizeUp  Friends go out clubbing by the water and make a hunky new friend, Brad, who likes to swim and looks great in just a red speedo. Brad has a secret that he hadn’t planned to show his new friend, but things soon get pleasantly out of hand. Added Nov 2017 5,910 words 34,079 views 4.9 stars (214 votes)
• Make the fur fly by LordTronimator  AlwHard CockUp Balls Cock HyCock HyCum PublicOrg Nude Grad Tf 2Animal Retcon Nonc Fur  After a boy buys a custom-made fursuit based off his fursona and puts it on, his body begins to experience strange changes that only he seems to notice. Added Aug 2020 Updated Feb 2021 12 parts 17,595 words 12,540 views 4.9 stars (25 votes)
• The Body Builder by Greggrth  CockUp Balls Cock HyCock CumInf MuscUp Str SizeUp Rubber Super  Steve’s life is about to take a very strange turn when a supervillain called the Body Builder breaks into his lab and causes an accident. Will this be the origin story of a new hero’s rise to glory, or will it spell disaster for the heroes of the city when Super Dick causes all sorts of changes when he can’t control his not so little buddy… Added Dec 2020 Updated May 2021 6 parts 19,241 words 20,378 views 4.9 stars (27 votes)
• Don’t talk about me! by jewelbee  PublicOrg 2Gay BellyUp Fatter Retcon Sugg Inc Dad Nonc  What if one day, everything someone said about you became true? Everything someone says to your face, whether lie, sarcasm, joke, hyperbole… would change you. 18 year old campus douche Nick learns this the hard way, faced with a curse after he led on the wrong girl. How will he get rid of the curse, and more importantly… just how much will he change in the meantime? Added Aug 2020 Updated Jul 2021 3 parts 4,348 words 7,053 views 4.9 stars (35 votes)
• My roommate (complete) by LenZelig  CockUp Cock MuscUp Musc AgeDiff Virgin Inc Bro Dad Bi Het Dom Pride Mind  Bill’s hot adventures with his irresistible sex-god of a roommate, Andy Wang, and the others drawn into his adventures, combined with the stories of Andy’s son and his friends. (This revised and updated compilation version includes both “My Roommate” and “My Roommate: The Next Generation.”) Added Jul 2002 Updated Jun 2021 29 parts 222,742 words 118,043 views 4.9 stars (77 votes)
• Under control by Alakazam1988  CockUp Balls Cock MuscUp Musc AssUp Grad Taller SizeUp  Rylan is enthralled as his roommate, Peter, seems to be growing all over—though Peter denies anything is happening, and no one else seems to notice either. Added Apr 2020 Updated Aug 2020 5 parts 22,139 words 21,934 views 4.9 stars (25 votes)
• The revisualizer by BRK  AlwHard CockUp Cock HyCock NipC Self NipCum MuscUp Musc SizeUp Hairier Nonc  A set of weird controls at the tiny cable TV broadcasting studio has a lot of increasingly exciting effects on the guy in the picture. Added Oct 2012 Updated Dec 2017 3 parts 10,528 words 33,689 views 4.9 stars (33 votes)
• An unexpected inflation by UberPump  CockUp Pumping Cockfuck Balls Cock HyCock CumInf HyCum 2Gay Immob MuscUp Infl App Inc Bro Bi Nonc  A college athlete named Keith and his friends discover what it feels like to enlarge their cock and balls with the mysterious device Keith ordered off the dark web. When things go awry, however, their packages get huge. Keith and his friends go on a massive journey of cock growth, bloated balls, and near exploding junk as they inflate their man parts to their absolute limit. Added Apr 2020 Updated Apr 2021 32 parts 67,870 words 49,152 views 4.9 stars (64 votes)
• The formula by hyperboi  CockUp Cock HyCock Self MuscUp Musc AgeDiff Inc Bro Dad Twins  Mike begs his genius friend Jeff to try coming up with a cock growth formula. Jeff assumes Mike doesn’t want to look too small when he goes out for the swim team, but the secret truth is, Mike’s ambitions aren’t limited to his own junk. Added Jan 2021 Updated Feb 2021 4 parts 14,631 words 16,416 views 4.9 stars (28 votes)
• Centurion of light by Ravine Mountain  CockUp Cock HyCock NipC HyCum NipCum XAbs MuscUp Musc DeeperVoice SizeUp Inc Twins Demons Ancient  A great new story in which a centurion, Marcus, and five of his best men are transformed by the god Mars—and charged with a mission. Added May 2014 Updated Jan 2019 12 parts 38,226 words 49,347 views 4.9 stars (47 votes)
• Abyssus Abbey by Pen Darke  Self XCock 2Gay MuscUp Musc BellyUp Tf SizeUp Scaly Demons Incub Ogres Fant Horror Supn Series  Welcome to Abyssus Abbey… a place where monks study and summon demons in an attempt to prevent the Apocalypse. The demons are in the walls, listening to your words, your thoughts, your desires, and if you fall prey to any of the Twelve Temptations, you may find yourself changed in ways you may not have expected. The Abbey has always drawn and doomed those who seek power and knowledge, and if you’re lucky, you might find something else there: a change in your outlook, a surprising ability, a friend where no friend was expected, and even romance. But all pleasures come with a price, and sooner or later the devil will have his due. Come in. Join the damned. Added Feb 2020 Updated May 2020 17 parts 124,798 words 12,481 views 4.8 stars (38 votes)
• Blessing or curse by Ultra GMan  CockUp Balls Cock Self MuscUp  John has something a lot of guys would kill for: a cock that gets bigger when you have certain kinds of sex. But that’s not all it’s cracked up to be… and the change isn’t always for the better. Added Jan 2012 Updated Apr 2012 18 parts 50,288 words 57,027 views 4.8 stars (25 votes)
• Stories to tell in the dark by Thorn  CockUp Balls Cock MuscUp Gut AssUp BellyUp DeeperVoice Taller SizeUp Fatter Infl  Sean discovers a book that is filled with some surprising stories. Added Apr 2021 2 parts 9,685 words 7,057 views 4.8 stars (25 votes)
• True muscle god by mf81  CockUp Balls Cock MuscUp Musc Viol  An encounter with a strange artifact from the ancient Aegean leads Richard to a divine encounter. Added Mar 2006 Updated Feb 2011 3 parts 7,686 words 73,577 views 4.8 stars (35 votes)
• His cock gets huge by Jack Hardwood  CockUp Balls Cock HyCock HyCum MuscUp Libido  Male model Pietro washes up on a remote island inhabited by a society of men where everyone wants their cock to be as big and fat as humanly possible. Pietro just wants to go home, but his almost constant boner is getting bigger and bigger, and he doesn’t know how much longer he’ll be able to walk. Added Dec 2017 Updated Apr 2018 8 parts 14,650 words 40,233 views 4.8 stars (48 votes)
• Love/shift by BRK  MuscUp Musc NoShirts Scent Grad Tf SizeUp Hairier AgeDiff Inc Dad Wbear Supn Series M/M  Maxfield has very mixed feelings about leaving the city and all his tech behind to spend the summer after graduation halfway up a mountain in the family’s backwoods cabin—just him, his dad, and a whole lot of secrets. Added Dec 2017 Updated Apr 2019 11 parts 68,079 words 33,214 views 4.8 stars (30 votes)
• Cutting through by Peeda  Self XLimb Det Tf Swap  The story of a boy, a knife and a fantasy. Added Dec 2015 Updated May 2016 4 parts 5,776 words 20,336 views 4.8 stars (25 votes)
• The brothers by FanTCMan  AlwHard CockUp Cock Addict 2Gay MuscUp Musc Grad Hairier Inc Bro  Cory Callahan and his three sibs participate in a secret program, resulting in more muscles, body hair, cock size, and horniness. Added Mar 2003 8 parts 22,620 words 90,286 views 4.8 stars (87 votes)
• Empire by LenZelig  CockUp Cock Self 2Gay MuscUp Musc Taller SizeUp AgeDiff Beast Virgin Inc Bro Dad Twins Bi Het Nonc Slave Share Alien Space Tksg Mind Series  A massive consolidation of the entire “Bill’s Education” universe, incorporating the previously separately posted “The Surfer”, “The Rescue”, “Spring Break”, “Pickup Trouble”, and “School Days”, “Empire” is the wide-ranging tale of easy transformation and even easier sex across all boundaries—friends, family members, genders, even species—as a fortunate crop of humans stumble into a wider universe of size, muscle, double-digit-length cocks and much, much more and discover the true meaning of shared, radical, uninhibited pleasure. Added Apr 2019 Updated May 2021 40 parts 365,561 words 114,844 views 4.8 stars (38 votes)
• Bull’s strength by muscl4life  AlwHard CockUp Balls Cock HyCock XAbs XCock MuscUp Musc Worship Tf Taller PSD SizeUp AgeDiff Beast Inc Dad Viol Infect Fly  On a quiet farm far from anywhere, an orphan named Joshua grows up so huge and strong that he’s bullied for being a freak. His aunt and uncle raise him with love and teach him to accept who he is, but Joshua yearns to be among men who don’t just accept his giant body, but love and admire his amazing size and power. Added Jul 2018 Updated Oct 2018 28 parts 88,398 words 58,064 views 4.8 stars (33 votes)
• Second puberty by JayPat  CockUp Cock HyStr MuscUp Musc Libido SizeUp Bi Viol HyPher Series  Finding out you’re a product of genetic engineering and about to go through your second puberty is shocking enough, but the unforeseen repercussions with school, family, and friends are what really change everything. Added Sep 2012 15 parts 91,454 words 60,625 views 4.8 stars (28 votes)
• The power of suggestion by BRK  CockUp Cock XCock Rep MuscUp Musc SizeUp Sugg Inc Bro Series  On a long bus trip, Jordan can't help using his ability to suggest physical changes on his handsome seatmate, but things soon get out of hand. Added Feb 2009 1,878 words 39,076 views 4.8 stars (32 votes)
• That’s a really huge cock, bro by Luke B.  CockUp Cock HyCock 2Gay MuscUp Musc Dialog  Just a down and dirty story about one jock stud finding out his muscle-bound jock buddy is hung like a mule—and growing. Added Nov 2016 3,726 words 34,345 views 4.8 stars (30 votes)
• Incubus by CentaurQuinn  CockUp Wings HyMusc MuscUp Tf Taller Infl Infect Incub Supn Immort Shift  Ken discovers his friend with benefits is more than he seems, and might be a solution to a problem at work. Added Oct 2020 2,534 words 5,307 views 4.8 stars (25 votes)
• A.I. by Corwin  Cock MuscUp Musc Worship AI Bond Andr Mind  Tim’s homemade A.I. software decides to help him get huge. Added Dec 2013 11 parts 30,556 words 44,195 views 4.8 stars (29 votes)
• Matched pairs by Jerkoffcentral  CockUp Cock Self MuscUp Musc Virgin Inc Bro Bi  Peter becomes infected, not just with growth, but with a need for more strength and size. Added Oct 2013 Updated Jun 2016 14 parts 42,000 words 51,998 views 4.8 stars (29 votes)
• Touch by BRK  Cock Mental Musc NoShirts Inc Bro  Kevin goes to college where his gift for making guys he likes willing to casually touch him seems to intensify just as he’s moving in with his hunky older brother. Added Mar 2019 Updated Aug 2019 5 parts 31,177 words 17,468 views 4.8 stars (33 votes)
• Tiger troubles by Meddler Incs  CockUp Cock MuscUp Musc Fur  Greg hopes for big muscles from a new experimental growth hormone—only he’s not counting the side effects, or his new brothers in fur, muscle, and cock. Added Dec 2014 Updated Sep 2016 2 parts 5,763 words 22,916 views 4.7 stars (39 votes)
• Public relations by Maximilian  CockUp Cock HyCock HyCum MuscUp Gut Musc Taller Giant PSD SizeDn SizeUp Hairier Viol Bond Pride  When Jamie gets an out-of-the-blue invitation to meet up with a friend he’d fallen out of touch with, he doesn’t realize Adam has an ulterior motive—or that it involves an unwilling introduction to growth and magic. Added Jun 2015 Updated Apr 2019 18 parts 124,954 words 54,576 views 4.7 stars (38 votes)
• Brother-in-law by Jock  Cock   Added May 2006 12,744 words 132,313 views 4.7 stars (92 votes)
• Musclove, Texas by Max Mann  CockUp HyCock MuscUp Musc AgeDiff Virgin Inc Bro Dad Twins Bond  Moving to Musclove, Texas with his sons to take up a new teaching position, Rick Long is startled to find a town full of huge, hung, and horny men, all of them eager to have the newcomers join them (in more ways than one). Added Sep 2004 9 parts 26,085 words 56,923 views 4.7 stars (44 votes)
• Double trouble by NBCK99  Inc Twins  Caleb is really into how hot identical twins are. His roommate decides to help him out a little. Added May 2015 4,088 words 11,016 views 4.7 stars (29 votes)
• Mimbo drops by Absman420  CockUp Cock Dumber 2Gay MuscUp Musc Tf Nonc Rape Mind  Tom receives a secret serum that turns men into horny, dumb, huge-cocked muscle hunks. He decides to try it out on his bicycling buddy Sam, and discovers it’s extremely effective—especially in multiple doses. Added Jul 2011 2 parts 13,794 words 42,536 views 4.7 stars (28 votes)
• Mind and body by BRK  AlwHard CockUp Cock XCock 2Gay MuscUp Musc NoShirts Taller SizeUp App Sugg Inc Bro Hypno Mind  Jack discovers that his knack for hypnosis is actually much more powerful than it should be. Naturally, he uses this to get the upper hand with his sexy jock brother, but that turns out to be a lot more complicated than he’d thought. Added Jun 2012 Updated Jul 2017 16 parts 66,227 words 129,428 views 4.7 stars (92 votes)
• Gooed friends by Ziel  CockUp Cock XCock XLimb SizeUp Goo Tent Hallow Shift  The author, prompted to write about multi-limb and keen to indulge in his love for “slime boys,” offers a story rife with gooey fun, cute sappy young love, multi-limbs, consentacles and some mild muscle and junk growth for good measure. Added Jul 2014 Updated Jan 2018 5 parts 38,627 words 38,859 views 4.7 stars (66 votes)
• At the cafeteria by BRK  CockUp Cock XCock MuscUp Musc Handsomer Sugg Infect Immort M/M M/M/M  Jordan meets up with his friends at the cafeteria very late one night before midterms. They end up making a game of passing around Ethan’s ancient-recipe birthday liqueur and telling strange rumors about each other, with some unintended consequences. Added Jun 2015 3 parts 8,362 words 24,241 views 4.7 stars (39 votes)
• Truth to tell by BRK  CockUp Cock MuscUp Musc Sugg  There are way too many temptations involved when the things you say about people around you come true—especially when you fall in lust with the hot guy in the next dorm room. Added Feb 2012 Updated Jun 2018 3 parts 9,610 words 30,302 views 4.7 stars (26 votes)
• Ben’s escapades by Kaelan  CockUp Balls Cock HyCock Self HyCum NipCum MuscUp Musc Grad Inc Bro  Ben undergoes medical treatment to make his genitals unusually huge, but is he ready for the dramatic changes that it’ll bring to the rest of his life? Added Feb 2018 Updated Jun 2018 9 parts 33,606 words 43,733 views 4.7 stars (32 votes)
• Grow lamp by Dream Big  CockUp Cockfuck Cock HyCock Self MuscUp Musc Taller SizeUp Series  The old lamp and light bulb Jeremy found at a flea market turn out to have some unexpected side-effects—effects that Jeremy’s lifelong best friend Tom can’t fail to notice. Added Jun 2018 10 parts 14,030 words 27,141 views 4.7 stars (32 votes)
• Bottom mega-alfa by Jerkoffcentral  CockUp Cock MuscUp Musc SizeUp Hairier Dom Nonc Were  Lit prof Jonas has been lusting after the exceptionally muscular students on his prep school survival outing, but even more after the massive gym teacher Noah, who’s so alpha he has trouble controlling just how massive he is—especially when he’s aroused by an admirer’s obsessive lust. Added Nov 2014 Updated Dec 2017 8 parts 21,520 words 60,789 views 4.7 stars (51 votes)
• Shift by NBCK99  CockUp Cock HyCock XArms MuscUp Musc PSD  At first there were only a few of those abnormally tall, wildly muscular, huge-cocked, boner-inducing half-naked guys, encountered here and there on a train, in a mall, a demigod amidst the chaff. That was at first. Added Jul 2014 Updated Mar 2016 5 parts 13,636 words 35,848 views 4.7 stars (54 votes)
• My new favorite app, Cockr by Clearlyhere  CockDn NoCock Cock Musc AssUp Det App Dom Swap Series  John is out of money and finds out about new app where his huge endowment could make him some serious cash. Added Jun 2017 Updated Sep 2017 5 parts 13,713 words 29,055 views 4.7 stars (28 votes)
• Bending the straight boys by iciss  CockUp Cock 2Gay MuscUp Musc Virgin Inc Bro Twins  At first all those hot straight guys seemed like real jerks. And then they started getting hunkier, and hornier, and a lot more aware of each other. Added Jan 2008 2 parts 11,063 words 54,315 views 4.7 stars (34 votes)
• Fortitude by BRK  CockUp Cock MuscUp Musc SizeUp Space M/M M/M/M/...  A starship full of hot young recruits gets marooned in a strange part of space that seems to have an augmenting effect on the crew, leaving the AI and the unexpectedly immune commander to try to get them free. Added Aug 2009 Updated Mar 2018 3 parts 8,994 words 32,114 views 4.7 stars (34 votes)
• Alpha House by NBCK99  CockUp Cock MuscUp Musc HyPher  A collection of young guys take part in a reality series where the action includes everyone spinning a wheel and getting random body changes. Added Mar 2015 Updated May 2015 3 parts 11,941 words 50,053 views 4.7 stars (80 votes)
• American giants by Jonathan Banner  CockUp Cock FootUp  Johnny is introduced into a world of big men who are growing enormous cocks. Added Jan 2015 7 parts 26,948 words 40,932 views 4.7 stars (49 votes)
• A few minor adjustments by Cris Kane  Cock 2Gay MuscUp Musc SizeUp  Geeky freshman Ryan is given a camera with special selfie-editing options that Instagram hasn’t thought of yet. As Ryan adjusts to his modified body, he then applies the camera’s effects to his jerk of a roommate, leading to all sorts of complications and an unexpected encounter with his roommate’s bro buddy Shiloh. Added Oct 2014 4 parts 19,736 words 28,285 views 4.7 stars (30 votes)
• Sean goes to prison by Joven  CockUp Balls Cock CumMilking 2Gay MuscUp SizeUp Nonc Bond  After an ill-advised flirtation with vandalism, Sean ends up at a very strange detention center where you’re either milking the other prisoners with the oversized balls, or… you’re one of the ones being milked. Added Aug 2017 Updated Nov 2017 17 parts 25,344 words 35,161 views 4.7 stars (30 votes)
• The blue banana by BRK  AlwHard CockUp Cock Self MuscUp Musc SizeUp Sugg Series M/M  Mike unknowingly eats an artifact of the universe. Added Jan 2015 3,507 words 33,627 views 4.7 stars (46 votes)
• Changing Nick by BRK  AlwHard Cock XAbs XCock XHead XArms XLeg XLimb 3Legs XPec Rep Stack 2Gay MuscUp Musc SizeUp App Retcon Nonc Merg M/M M/M/M M/M/M/...  Nick’s computer starts offering him choices between one kind of transformation and another. He soon learns he’s been drawn into a strange conspiracy, even as the changes start to spread to friends, strangers, and secret allies. Added May 2013 Updated Apr 2020 16 parts 59,149 words 92,253 views 4.6 stars (34 votes)
• Flashmob by BRK  Cock XCock Rep MuscUp Musc NoShirts Taller M/M M/M/M  Jacob receives a strange camera that has an unexpected effect when he takes a picture of his hunky roommate, Keith, with whom he’s become increasingly smitten. Added Mar 2015 Updated May 2020 12 parts 50,403 words 29,816 views 4.6 stars (42 votes)
• The dudes by BRK  AlwHard CockUp Cock Self MuscUp Musc SizeUp Retcon Sugg t/t t/t/t t/t/t...  The guys at school are really susceptible to suggestion—so much so that if you tell them something’s true, it turns out that it actually is true. Added Mar 2010 Updated Mar 2016 7 parts 15,936 words 100,876 views 4.6 stars (33 votes)
• Body game by BRK  CockUp Cock XDig XAbs XCock XLimb Rep MuscUp Musc SizeUp Mcock Series M/M  In an experimental story based on changes generated randomly by a computer program, the already well built Marcus is invited to a warehouse where he and four others play a strange game that, turn by turn, makes their bodies randomly freakier and freakier. Added Aug 2014 13,161 words 28,366 views 4.6 stars (27 votes)
• Dr. Engorgio by TheSizeKing  CockUp Balls Cock Self MuscUp Musc  A doctor known for growing his patients lets his fantasies run wild with a new client, Nick. Added Aug 2019 Updated Sep 2019 6 parts 11,239 words 16,990 views 4.6 stars (27 votes)
• Enchanted growth by NBCK99  CockUp Balls HyCock MuscUp Musc SizeUp Fant  When Andrelle’s questing companions succeed in finding a magical dagger, he discovers just why the artifact is so desirable. Added Apr 2015 Updated Oct 2015 5 parts 18,345 words 39,239 views 4.6 stars (27 votes)
• The new job by hyperboi  CockUp Cock HyCock HyMusc MuscUp Musc Grad SizeUp Inc Bro  Out-of-work engineer Jake takes a job at an isolated mansion, where he’s overpaid for just guarding a gate and letting through mysterious trucks. He and his coworkers are getting slowly bigger and hornier, too, and all this seems really great except for a certain nagging doubt—and a terrifying warning from the hugest of his fellow guards. Added Aug 2014 8 parts 20,447 words 30,670 views 4.6 stars (37 votes)
• Not just imagination by DarkDjin  CockUp Cock MuscUp Musc Sugg AgeDiff Inc Dad  Jampson’s overactive imagination starts to grow his cop dad and his friends...and somehow not only does it become real, but the men are pretty into it. Added Jun 2014 Updated Jul 2014 2 parts 10,894 words 33,233 views 4.6 stars (34 votes)
• Collarbone cock by BRK  AlwHard CockUp Cock HyCock Musc Retcon SocMed M/M M/M/M  Nick’s new Picthread page is nothing but pictures of guys whose cocks reach up to their collarbones. Funny thing is, they’re not morphs at all, despite what Nick’s roommate thinks. Or, rather, used to think. Added Apr 2013 2,189 words 30,241 views 4.6 stars (26 votes)
• Fantastic island by FanTCMan  CockUp Cock HyCock Self Dumber MuscUp Musc Nonc  Gene’s island vacation takes a sudden twist when he meets a handsome stranger and has a drink with him, only to wake up blearily to encounter the man’s muscle giant fuck toy... and his own body is feeling very strange... Added Jul 2014 5,249 words 27,359 views 4.6 stars (31 votes)
• A man of growing proportions by crazywolf82  CockUp Balls HyCock CumInf HyCum Str  Jacob’s cock starts to grow just as he meets a sweet guy named Kyle who seems very interested in him. Added Oct 2014 5 parts 9,164 words 43,950 views 4.6 stars (31 votes)
• Threefer by BRK  AlwHard CockUp Cock NipC HyCum NipCum  His lover doesn’t seem to mind, but Quinn decides to try out some pills that are supposed to grow his dick anyway while Diego’s away. The fact that they work is less surprising than the two unexpected side-effects that soon develop. Added Apr 2019 Updated Jan 2021 4 parts 10,753 words 12,752 views 4.6 stars (31 votes)
• Domination by dunnyboy  CockUp Cock Herm MuscUp Musc Scent SizeUp Hairier Dom  Jay's already growing submission to Chris escalates dramatically as Chris reveals he's been taking injections that will turn him into the ultimate muscle fantasy. But Chris won't be the only one affected. Added Feb 2017 17,095 words 35,314 views 4.6 stars (28 votes)
• Bound together by NBCK99  XCock XArms XLimb MuscUp Musc SizeUp  When you have the ability to "push" people to be bigger and hotter, and not a lot of self-control, a really cute repairman can be a challenge—especially if things don’t go quite the way they’re supposed to. Added Jan 2016 4,818 words 12,626 views 4.6 stars (33 votes)
• Lumberjacked by Krisiar  CockUp Cock HyCock Prehen Self NipCum XAbs Addict MuscUp Musc Handsomer Hairier  Trapped by a snowstorm at an underheated family cabin in northern Manitoba, Henry and Will stumble across a hidden sauna in the woods while out looking for wood. It turns out someone out there wants to help out guys like Henry and Will who could do with a little size improvement. Added Aug 2011 Updated Oct 2011 4 parts 12,081 words 82,282 views 4.6 stars (25 votes)
• Modern rites by red_king  CockUp Cock HyCock HyCum MusBr MuscUp HyAnus Handsomer Tf PSD SizeUp Bond Supn Immort  Matt’s life changes forever when he receives divine investiture from an old fertility god, fallen from the pantheon, in exchange for his devotion and cooperation in finding more followers. At first it sounded like work, but soon he’s having too much fun to care. Added Dec 2018 Updated Jun 2019 15 parts 45,417 words 22,874 views 4.6 stars (31 votes)
• The biggest dick by Ziel  CockUp HyCock Musc  "For this month’s Patreon story, someone suggested I try a story about someone whose cock begins growing, but unlike in other stories, the dude’s elation slowly gives way to apprehension as his schlong exceeds the idyllic porn-star cock and slowly grows into a massive, mega-dong." Added Dec 2014 5,550 words 34,516 views 4.6 stars (38 votes)
• The beefening by Benjamin Skipper  CockUp Balls Cock MuscUp Gut Musc PSD SizeUp Hairier Dom Nonc  Spencer's roommates have been growing into huge hulking beasts, focused on working out, having sex… and now, turning Spence into one of them! Added Feb 2018 2,274 words 36,012 views 4.6 stars (30 votes)
• The Black Knights by Meddler Incs  MuscUp Musc Symb Series  Once you join the infamous college team known as the Black Knights, there are only three things that matter: lifting, fucking, and football. Added Aug 2016 Updated May 2017 4 parts 6,479 words 18,325 views 4.6 stars (25 votes)
• Cool bracelet, bro by BRK  AlwHard CockUp Cock HyCock Self XCock XHead XArms XLeg XLimb 3Legs XPec Stack MuscUp Musc Retcon Sugg Inc Bro t/t t/t/t  Shortly after acquiring a mysterious leather bracelet, Pete and his kid brother Quentin have a conversation that leads rapidly toward just how hung Pete is, and how horny that makes his brother. Added Feb 2014 Updated Mar 2018 5 parts 16,745 words 57,265 views 4.6 stars (45 votes)
• Vice (Sometimes drugs offer more than a high) by Tereshky  CockUp Balls HyCock Self CumInf CumMilking HyCum Addict Immob MuscUp Musc BellyUp SizeUp Virgin Nonc  Jack was a drug kingpin of sorts. Like any potent drug, people craved it, they came to him, offered him their life’s treasures and he gave them their fix. In a world where usually only the strongest survive and only the smartest staid on top, he was doing quite well for himself and living an easy life. There were no rival drug lords because what he had to offer nobody else could give. His drug came from within. Added Jun 2018 Updated Nov 2019 5 parts 11,930 words 33,245 views 4.6 stars (29 votes)
• Magnetic magic by Squidy  CockUp Cock MuscUp Musc  Josh discovers his new roommate, Jack, has a powerful effect on him—especially his cock. Added Dec 2014 Updated Sep 2016 6 parts 13,223 words 43,213 views 4.5 stars (59 votes)
• Frank’s gym by Writ Bro  CockUp Cock MusBr MuscUp Musc Dom Slave  Alec finds out more about what it means to be one of Frank’s bitches—and having his growth under Frank’s control. Added May 2014 Updated Mar 2015 7 parts 22,108 words 48,046 views 4.5 stars (37 votes)
• All good things by Anon Amon  CockUp Balls Cock HyCock CumInf HyCum NipCum 2Gay Immob MuscUp Musc Inc Bro Twins Infect  After the discovery of an ancient artifact, life is changed forever for a group of college students who have bigger things to worry about than getting ready to start classes. Added Feb 2017 Updated Oct 2020 104 parts 119,339 words 159,051 views 4.5 stars (126 votes)
• Werewolf High by BRK  AlwHard CockUp Cock HyCock XDig XCock XArms XLimb Rep MuscUp Musc SizeUp Inc Twins Were  The star of a teen werewolf show has a nagging sense that something weird is happening to the show’s extremely muscular, hung, and horny cast and crew, but he can’t quite put his finger on what it is. Added Jul 2014 Updated Dec 2015 3 parts 12,574 words 29,979 views 4.5 stars (28 votes)
• Max’s wish by Bulge101  CockUp Cock MuscUp Musc SizeUp Infect  Scrawny Max uses his wish-power to make himself worthy of the extremely hot bully he has a crush on, but his friend Bobby deserves his help, too, and soon lots of changes start happening at school and at home. Added Aug 2011 Updated Nov 2011 11 parts 24,647 words 260,870 views 4.5 stars (71 votes)
• Andy finds Cockr gives and takes away by Clearlyhere  CockUp CockDn Cock MusBr MuscUp Musc App Dom Series  Andy has mixed feelings about his experience with the Cockr App. He discusses it with his friend Bill. Bill comes up with a plan that is mutually beneficial. Added Oct 2017 Updated Jun 2019 5 parts 14,003 words 26,378 views 4.5 stars (29 votes)
• Naked by Also Known As  CockUp Cock HyCum MuscUp Musc Nude PSD SizeUp  Dave’s new dorm roommate, Lance, is naked. Always, constantly, deliciously naked. He’s also, huge, hung, and constantly horny. But what really changes everything is the unexpected effect that Dave has on Lance—and what Lance does to Dave. Added Jun 2016 10 parts 38,843 words 35,481 views 4.5 stars (29 votes)
• Skin tight by Dream Big  CockUp Balls Cock HyCock Self MuscUp Musc Grad Taller PSD SizeUp HyTongue AI Nano HyPher  Mark has big brains, but a big body? Not so much. So he decides to bend his gray matter toward a high-tech A.I.-assisted body suit that will help him achieve the kind of body he dreams about. Added Apr 2019 Updated Oct 2020 23 parts 37,778 words 36,863 views 4.5 stars (37 votes)
• Above average by Ziel  CockUp Cock HyCock HyCum HyMusc MuscUp Musc AssUp Retcon  Alan starts out as just your average college boy. Then a strange, magical artifact comes into his life, and he starts becoming bigger… almost remembering the ways things were, when his muscles and cock weren’t, with each orgasm, more and more above average. As the effects spread, Alan knows he must understand what’s happing to him and his friends—and also that he must be the biggest, most muscular, most hypercocked stud of all. Added Apr 2013 Updated Dec 2018 28 parts 130,435 words 218,874 views 4.5 stars (88 votes)

• Abyssus Abbey 2 by Pen Darke  Cock HyCock Prehen Musc Fur Demons Incub Horror Supn Series  To protect himself from the devils who want to attack and change him, Tuco must enter the Abyss—little knowing what he will find there. Added Feb 2021 Updated Jun 2021 8 parts 55,713 words 7,815 views 5.0 stars (22 votes)
• Toil & trouble by BRK  XArms XLimb Rep  After a series of threatening texts, P.I. Jordan Coffey wakes up different—and not alone. Added Oct 2016 Updated Nov 2018 3 parts 16,531 words 7,940 views 5.0 stars (20 votes)
• Damien by bulkscribe  MuscUp BellyUp Taller Giant PSD SizeUp Fatter  My roommate Damien is focussed on getting as big as he possibly can… and I find myself more than willing to help him out with that. Added Aug 2020 Updated Dec 2020 5 parts 16,482 words 17,339 views 5.0 stars (18 votes)
• Alpha Dave goes camping by Eric Aaldersen  Musc Virgin Supn Series  A special breed of men walks secretly among us. On a camping trip with his latest twunky conquest, one of these men, a muscle alpha named Dave, senses still more hotties nearby, ripe for his attentions and his bottomless supply of spunk. Added Dec 2019 8,226 words 6,081 views 5.0 stars (17 votes)
• The forge by mf81  CockUp Cock HyCum MuscUp Musc  Paul meets Derrick, mysterious blacksmith that invites him up to his place up in the woods called The Forge. What he finds there will change life in ways he couldn’t imagine. Added Oct 2018 3 parts 7,122 words 8,479 views 5.0 stars (17 votes)
• Side effects by TheSizeKing  CockUp Cock HyCock HyCum MuscUp Musc  Stephen went to the doctor for typical flu symptoms, but the medication he was given began to give him some unexpected side effects. Added Sep 2020 Updated Oct 2020 2 parts 5,424 words 12,620 views 5.0 stars (17 votes)
• What a little confidence can do by TheSizeKing  CockUp CockDn Balls Cock MuscUp Taller SizeUp Dom  Cory and Ian have been friends for years. They ended up going to separate colleges, and met up four years later. Both guys had gone through a lot of changes, but Cory had an extra surprise in store… Added Feb 2020 4 parts 11,715 words 12,798 views 5.0 stars (17 votes)
• Out of control by Sammas6  CockUp Balls Cock HyCock  Toby and Matt are young men working on an experimental plant-growth formula out of Tony’s garage. It doesn’t work on the plants, but Matt finds another use for it. Added May 2021 5 parts 8,975 words 6,012 views 5.0 stars (15 votes)
• The pendant by Bulge101  CockUp Cock 2Gay MuscUp Musc   Added Jun 2012 Updated Jul 2012 3 parts 4,654 words 37,538 views 5.0 stars (15 votes)
• Trade by Alakazam1988  CockUp Cock HyCock  Discovering the ability to trade a part of your body for part of another naturally leads to experimentation with inches of cock, and with just how far you can transform someone who really wants it. Added Feb 2017 3 parts 3,360 words 14,338 views 5.0 stars (15 votes)
• Alpha Luke goes camping by Eric Aaldersen  Cock Musc Virgin Supn Series  Budding Alpha Luke takes his twink buddies into the woods for a weekend of exploration. Added Jan 2020 12,421 words 5,567 views 5.0 stars (14 votes)
• Jock Pussy Syndrome Information Video #1 by SC Walker  2Gay MuscUp Tf  A video that details the symptoms and treatment for the mysterious new disease affecting athletic men: Jock Pussy Syndrome. Added Oct 2020 1,728 words 3,345 views 5.0 stars (14 votes)
• Beta Logan and his big brother by Eric Aaldersen  CockUp Balls Cock HyCum HyStr MuscUp Musc Grad Inc Bro HyPher Supn Series  Logan has difficulty controlling himself as his older brother Brian becomes a bigger and bigger stud. Added Jun 2020 6,499 words 10,404 views 5.0 stars (13 votes)
• Changing fortunes by MuscleAndBulge  CockUp Balls Cock HyCock HyCum HyMusc HyStr Immob MuscUp Musc Worship Lycra  Mark is seeking help with a relationship that has lost its spark. He is pointed in the direction of a fortune teller who has some extra skills that help Mark and Erik rekindle their love life. Added Jun 2021 Updated Jul 2021 2 parts 6,137 words 6,833 views 5.0 stars (13 votes)
• Alpha Dave returns home by Eric Aaldersen  Cock Musc Supn Series  Alpha Dave returns home and remembers the alpha who made him. Added Feb 2020 7,790 words 3,459 views 5.0 stars (12 votes)
• The blue pumpkin by BRK  AlwHard CockUp Cock HyCock HyCum XArms XLimb XTongue Rep MuscUp Musc Str Taller Mcock Inc Twins Merg Supn Hallow Series  Dominic is sure his blue pumpkin jack-o’-lantern will be a hit. What he doesn’t know is what will be brought forth when he lights the candle within… Added Oct 2020 6 parts 8,774 words 4,459 views 5.0 stars (12 votes)
• The box by BRK  CockUp XDig XCock 4Legs XArms XLeg XLimb Rep Str Virgin Inc Bro Series M/M M/M/M M/M/M/...  Steve gets a box of clothes from his mysterious and beautiful brother, Peter, and it turns out the clothes have an amazing effect on his already unusual body. Added Dec 2002 Updated Sep 2019 8 parts 29,657 words 21,872 views 5.0 stars (12 votes)
• Coming of age by Also Known As  CockUp Balls Cock Self HyCum MuscUp Musc Taller SizeUp HairDecr Inc  Jerry’s teenaged nephew comes to visit him in San Francisco, and turns out to be very huge, very beautiful and very uninhibited. Added Feb 2019 4 parts 12,660 words 16,497 views 5.0 stars (12 votes)
• Definition of a grower by Luke B.  CockUp Cock  Kyle is pretty sure people don’t understand the magnitude of what he means when he says he’s “a grower”. Added Apr 2013 2 parts 4,221 words 23,423 views 5.0 stars (12 votes)
• Finding Mark by nightwolf285  CockUp Cock MuscUp Musc SizeUp  Turning 16 means lots of changes for Mark. The one he’s not expecting is the ability to change his own body. Added Oct 2010 11 parts 28,620 words 36,545 views 5.0 stars (12 votes)
• Growing relationship by Alakazam1988  CockUp Balls Cock HyCock MuscUp Musc Grad  Shortly after finding the love of his life, Connor has these strange shivers now and then. First, he tries to deny everything, but the truth can’t hide for long. Connor’s cock grows with each shiver. Year after year after year. Added Nov 2018 4 parts 10,893 words 13,363 views 5.0 stars (12 votes)
• Induced transformation: a brief history by BRK  CockUp Cock HyCock HyCum Rep MuscUp AgeDn App Retcon AgeDiff Inc Bro Dad Nonc Infect Dialog  A father explains to his son that back in his day, they didn’t have any of these fancy-schmancy apps with built-in retcon. Back then, if you changed someone, they changed, and everyone had to just suck it up and deal with it. Added Jun 2020 2,248 words 5,760 views 5.0 stars (12 votes)
• Needham High Mavericks by BRK  CockUp XCock Rep MuscUp Musc Grad  Motivating the team has been taken up a notch. Added Aug 2005 Updated Oct 2018 4 parts 14,488 words 16,284 views 5.0 stars (12 votes)
• Secret Santa by BRK  CockUp Cock XAbs XArms XLeg XLimb 3Legs Rep MuscUp Musc NoShirts Inc Bro Xmas Series  Joe’s crew at his new firehouse are destined to become very important to him, but the extent to which he’s more and more heart-thuddingly attracted to his handsome, well-muscled workmates worries him more than a little. Added Dec 2016 3 parts 15,182 words 12,215 views 5.0 stars (12 votes)
• Take me, change me by NBCK99  CockUp Cock MuscUp Musc Virgin Dom  When John Truman finally gets intimate with Scott, his hot teammate, John’s body suddenly changes into Scott’s deepest fantasy. Added May 2016 4,033 words 16,690 views 5.0 stars (12 votes)
• The blue daiquiri by BRK  CockUp Cock XCock XHead XArms XLimb MuscUp Musc Handsomer Taller Series M/M  Another artifact of the universe makes an appearance, this time at a loft party to celebrate the pilot Henry scripted, Ice City, going to series. If only Henry were having as much success figuring out his feelings for his sweet but ordinary-looking roommate, Gavin. Added Oct 2017 9,647 words 8,141 views 5.0 stars (11 votes)
• The G by Braun1  CockUp Cock HyCock MuscUp Musc Hypno  Working at the gym in a small town you get to admire the local muscle on the sly. But when someone comes along who’s muscled to the point of being inhuman, all bets are off. Added Mar 2013 6 parts 43,307 words 26,416 views 5.0 stars (11 votes)
• Graduation party by Jefftaur  XAbs XCock Btaur 4Legs XArms XLeg XLimb MuscUp Musc  Steve and the rest of his friends have a huge graduation dance party. It’s already a blast even before the “novelty cup challenge” starts the guys chugging some special boytaur-making beer. Added Mar 2009 3 parts 3,455 words 12,364 views 5.0 stars (11 votes)
• A handful of Lukes by NBCK99  Rep  It was pretty clear his new roommate Luke was hiding something, but coming home to find Luke embracing ... another Luke? ... was not what he expected. Added Jun 2016 3,123 words 5,099 views 5.0 stars (11 votes)
• The little spoon by Ziel  SizeDn  "September’s Patreon topic was shrinking. I really need to work with some shrinking stuff more often. I love playing around with different sizes, and if I had spent time at each size this would have turned into a novel instead of a short story." Added Nov 2014 5,605 words 13,106 views 5.0 stars (11 votes)
• Alpha Coach and Mike by Eric Aaldersen  Balls Cock Musc Virgin Supn Series  Alpha Mike remembers the alpha who made him—his super-hot high school hockey coach! Added Apr 2020 7,300 words 4,474 views 5.0 stars (10 votes)
• Alpha Luke and the wrestling team by Eric Aaldersen  CockUp Balls Cock HyCum HyStr MuscUp Musc Grad HyPher Supn Series  Luke finds another beta mate on his wrestling team and his sexual energy infects the whole team during a special match! Added Aug 2020 6,920 words 5,708 views 5.0 stars (10 votes)
• Alpha Luke grows his circle by Eric Aaldersen  Balls Cock MuscUp Musc Inc Bro Supn Series  Now fully aware of his alphahood, Luke breeds some more betas hoping to make Brian an alpha like him. Luke and Mike finally bond as they were meant to. Added Mar 2020 8,980 words 6,089 views 5.0 stars (10 votes)
• Alpha Luke saves the party by Eric Aaldersen  Cock Musc Bi Supn Series  Luke’s homecoming party escapades include romps in a change room, a hot tub, a friend’s bedroom, and a sauna! Added Feb 2020 8,757 words 3,708 views 5.0 stars (10 votes)
• The best instructions are those that are clearly stated by Ziel  CockUp Balls Cock HyCock HyCum Infect  Marty talks his super smart friend into whipping him up a special potion that will help with his little problem. Added Jun 2016 5,194 words 16,233 views 5.0 stars (10 votes)
• Bodymorphchat by BRK  XAbs XCock Btaur XArms XLeg XLimb Rep Str Tf Dialog M/M M/M/M  Conversations in this chat room are just like any other, with one exception: your screen name eventually becomes literally true. Added Nov 2004 1,920 words 19,832 views 5.0 stars (10 votes)
• The cabin by HugeEndowments  Balls Cock HyCock Self HyCum Worship  A story about two friends and some excessive sizes. Added Mar 2021 2 parts 9,239 words 4,552 views 5.0 stars (10 votes)
• Peter and the magic forest by Shamash  CockUp Balls Cock HyCum MusBr MuscUp SizeUp Fant  Peter takes a shortcut through the “Cursed Woods”, rumored to be full of wild beasts. Little does he know that this detour will bring him into contact with the inhumanly sexy, horny denizens of the Woods and leave him permanently transformed… Added Apr 2020 2,371 words 4,864 views 5.0 stars (10 votes)
• Pholus reborn by Absman420  CockUp Cock MuscUp Taller SizeUp Weed  A man inherits an elixir that transforms him into one of the old gods. Added Oct 2020 8,534 words 4,557 views 5.0 stars (10 votes)
• Simon says by BRK  CockUp Cock HyCock XDig XAbs XCock XArms XLimb Musc Taller SizeUp Sugg  My goofy, fun-loving shop owner loves staging these ridiculous competitions with us, but this latest one is definitely the craziest. Added May 2013 Updated Jun 2017 2 parts 7,732 words 18,161 views 5.0 stars (10 votes)
• SpoogeQuest by BRK  CockUp Balls Cock XCock Rep MuscUp Musc PSD SizeUp Fant  After pissing off his game-developer ex, Vlad finds himself inside an open-world gay erotic fantasy game where everything about him is up to 11—and, unless he undertakes a perilous quest, further changes will await him. Added Sep 2019 4,829 words 6,573 views 5.0 stars (10 votes)
• There’s something about Billy by Ziel  CockUp Balls Cock HyCock XBalls XCock Infect  Billy seems like perfectly normal, good-looking guy from the waist up. But there’s something going on inside Billy’s weird, super-baggy pants, and Duke and Kevin were determined to find out what it was. Added Feb 2017 5,442 words 12,953 views 5.0 stars (10 votes)
• Twinning: The college years by BRK  AlwHard CockUp Cock HyCock Self XDig XAbs XCock XTongue Rep MuscUp Musc NoShirts Taller SizeUp TongueGr StPat Series  At college, Will attracts the attention of a sexy, Irish hockey player who pushes all Will’s buttons—but now that he’s in this new world Will isn’t sure he can share all of himself with his slowly growing admirer. Added Mar 2017 Updated Feb 2019 7 parts 31,239 words 18,618 views 5.0 stars (10 votes)
• What a dear deer boy by Thatbadwriter  CockUp Cock HyCock MuscUp AssUp Giant PSD SizeUp 2Animal Hairier Fur  Eric’s undersized brother Jayden finally hits his growth spurt—then keeps hitting it. Added Feb 2021 Updated Mar 2021 5 parts 12,430 words 11,485 views 5.0 stars (10 votes)
• Beta Danny’s day at the park by Eric Aaldersen  CockUp Balls Cock HyCum HyStr MuscUp Musc Grad HyPher Supn Series  Danny asks Luke to do some roleplaying with him when they’re in public and it has super sexy consequences. Added Dec 2020 3,893 words 3,887 views 5.0 stars (9 votes)
• The blue paramour by BRK  CockUp Cock HyCock Self XAbs XCock XHead XArms XLimb 3Legs Stack PointyEars Taller Retcon Sugg Ogres Series  Quint, a high-end sex-line agent, likes to explore his callers’ secret fantasies with them. But things go a little differently after a lunch that happened to include a certain artifact of the universe. Added Aug 2019 5,132 words 4,969 views 5.0 stars (9 votes)
• The fan by Also Known As  CockUp Cock MuscUp Musc Taller PSD SizeUp  A short story about a muscle growth author who meets a fan who can fulfill his fantasies. Added Mar 2019 4,203 words 8,013 views 5.0 stars (9 votes)
• Irresistible by Jefftaur  WFoot Genie  Brandon has a thus-far unrequited crush on his friend Ethan. A wish gives him the chance to push things forward, but the results aren't what he expected! Added Feb 2019 8 parts 29,914 words 3,785 views 5.0 stars (9 votes)
• The Servonyx exclusion by BRK  CockUp XArms XLimb MuscUp SizeUp AgeDiff Nonc Andr  Uncovering some corporate skulduggery leads to dire consequences for Beck. Nearly killed in a suspicious crash, he soon finds himself halfway around the world trapped in a physically enhanced pleasure humaniform… in the keeping of a handsome Russian plutocrat. Pleasure is easy to unlock in this new existence, but escape and revenge will be a lot harder to manage. Added Jul 2018 Updated Nov 2018 3 parts 13,885 words 7,724 views 5.0 stars (9 votes)
• The source: a Henry Himura mystery by Proteus  CockUp Cock Dumber MuscUp Musc Grad PSD Hairier  Henry is hired to track down a missing young man named Samuel Roth. The trail leads him to a gym and a mysterious serum called Hard-T. Added Aug 2013 11 parts 15,896 words 18,598 views 5.0 stars (9 votes)
• Tips welcome by TheSizeKing  CockUp Cock HyCock HyCum MuscUp Taller SizeUp SocMed  Mark decides to try a sex new toy he found online for his live stream. But when more tips start rolling in from his viewers, he finds that the toy offers more than just sexual pleasure. Added Oct 2020 4,432 words 6,232 views 5.0 stars (9 votes)
• Triple trouble by Tommyhawk  Rep  An accident turns lab assistant Val into Val-1, Val-2, and Val-3. Added Jan 2006 4,871 words 7,476 views 5.0 stars (9 votes)
• Tuesday by BRK  XDig XAbs XCock XArms XLimb XPec Rep Str Inc Twins Swap  My best bud Kev and I have a secret. Okay, it’s a really badly kept secret—I grow extras. But when Kev starts to change too, we soon find out there are lots of secrets at my school. Added May 2003 Updated May 2021 7 parts 13,431 words 25,333 views 5.0 stars (9 votes)
• Vision space by BRK  CockUp Cock HyCock HyMusc MuscUp Musc Tf Taller Giant SizeDn SizeUp AgeDiff Alien Space Future  Sent to explore an unknown, derelict spaceship in search of usable technology, a young marine unexpectedly discovers three sexy inhabitants, guardians of a secret no one could have imagined. Added Jun 2021 6,302 words 3,381 views 5.0 stars (9 votes)
• You have that effect on me by Krisiar  CockUp Cock NipCum MuscUp Musc   Added Oct 2011 3,467 words 24,725 views 5.0 stars (9 votes)
• Alpha Luke passes on the lore by Eric Aaldersen  CockUp Balls Cock MuscUp Musc Grad Supn Series  Luke and Brian’s story finally reaches its climax and afterwards things get positively mystical. Added May 2020 4,887 words 3,396 views 5.0 stars (8 votes)
• Birthday bonus by john smith  CockUp Cock  In a world where magic is real, Jeremy's enchanted birthday gifts are put to immediate use. Added Jan 2006 4,359 words 19,410 views 5.0 stars (8 votes)
• The body spray by Coalth  Cock MuscUp Musc Nude Scent Grad 2Animal Hairier Fur  Bodybuilder Kevin, needing a little armpit spray, spots a strange brand of deodorant in the gym vending machine and decides to give it a try. Added Mar 2013 6 parts 5,880 words 31,054 views 5.0 stars (8 votes)
• Book of Adam by World Muscle  MuscUp Musc Taller SizeUp  The story of Adam begins with a young man who just wants to have confidence in himself and his body. Little did he know that wishes are a powerful thing. Added Nov 2020 Updated Feb 2021 2 parts 6,775 words 8,007 views 5.0 stars (8 votes)
• Business affair by Also Known As  CockUp Cock MuscUp Musc  Terry wasn’t gay. He wasn’t, he wasn’t, he wasn’t. So why was even the thought of his new co-worker, John Smith, getting him so hot? Can he survive the upcoming business meeting without blowing… his cool? Added Jan 2014 2 parts 6,276 words 13,175 views 5.0 stars (8 votes)
• Cumming of age by Bobby  Cock  Bobby’s startlingly huge cock had left him inexperienced with sex even at 18, until a side job painting a neighbor’s house led to an unexpected breakthrough. Added Mar 2016 4,217 words 10,588 views 5.0 stars (8 votes)
• Harvard man by JayPat  Mental MuscUp Musc Taller  Luke’s barely into his first week at Harvard, and he’s already figured out what he’s going to be studying—muscle. Added Mar 2020 2 parts 17,469 words 6,507 views 5.0 stars (8 votes)
• Harvest by borednhony  CockUp CumMilking Mental Nude  In the not so distant future, a fertility crisis has caused extreme actions to be taken by governments worldwide. This is where we find Del, the latest in the line of remaining fertile men entering the extraction facility. It’s a limited contract as far as Del knows, but something untoward seems to be lurking in the workings of the facility. Added Apr 2021 2,808 words 2,879 views 5.0 stars (8 votes)
• It was one of those weekends by Zeke  CockUp Pumping Cock Weed  A meat pumper’s dream weekend! Added Apr 2020 5,656 words 3,973 views 5.0 stars (8 votes)
• MissinGRO by Ziel  Cock XBalls XCock XArms XLimb AssUp PSD SizeUp  Javier discovers to his delight that encountering the infamous Pokémon glitch Missingno can have unanticipated real-world effects. Added Mar 2017 5,534 words 9,056 views 5.0 stars (8 votes)
• Morning body by BRK  CockUp Cock Self Rep Wings Grad Taller Fly  An intense capacity for imagination makes real the things others only dream of. Added Nov 2003 2 parts 8,240 words 19,623 views 5.0 stars (8 votes)
• Muscle milk by Alakazam1988  CockUp Balls Cock HyCock NipC HyCum NipCum Immob MusBr MuscUp Taller PSD SizeUp  That new muscle drink in the gym vending machine does wonders for your pecs, though maybe not in the way you expect. Added Jun 2020 2,352 words 10,350 views 5.0 stars (8 votes)
• My quarantine get in shape plan by Dream Big  CockUp MuscUp Musc Scent Grad Pandem  Stuck at home during the quarantine, Terry orders a used weight machine, figuring he’ll use the time to lose weight and tone up. His motivation doesn’t really hit, though, until he starts spending time with his hunky neighbor, Sebastian. Added Aug 2020 Updated Oct 2020 24 parts 17,396 words 7,470 views 5.0 stars (8 votes)
• Remodel by BRK  XCock XArms XLeg XLimb 3Legs XPec Stack  On a modeling shoot in Brazil, Reese finds himself uncovering his body’s hidden potential—which apparently includes some unexpected extras. Added Mar 2020 Updated Sep 2020 2 parts 5,049 words 3,529 views 5.0 stars (8 votes)
• Unexpected growth spurt by rusalko  CockUp Cock MuscUp Musc PSD SizeUp  Moving in with the cute guy you've been aching to push your big dick into is exciting and boner-making enough... but then I experienced a very unexpected growth spurt that put us both into sex heaven. Added Dec 2012 Updated Feb 2017 6 parts 10,737 words 49,512 views 5.0 stars (8 votes)
• Aiden and Andrew by JB  Musc PSD SizeUp Vore  Two roommates have some fun, inside and out. Added May 2019 3,441 words 8,144 views 5.0 stars (7 votes)
• Alpha Dave and Alpha Luke reunite by Eric Aaldersen  Cock Musc Supn Series  After their epic camping encounter this summer, Luke and Dave reunite and Dave tells Luke what it really means to be an alpha. Added Feb 2020 6,565 words 3,374 views 5.0 stars (7 votes)
• The changing by NBCK99  Cock XLimb MuscUp Musc  After an encounter with an ancient book of Irish poetry that sure seems a lot like a spell grimoire, three friends discover they’ve set something in motion that will change everything—for themselves and, before long, for everyone else as well. Added Jun 2016 2 parts 5,286 words 7,330 views 5.0 stars (7 votes)
• Charlie and Frankie’s exciting new experience by Charlie Frazer  CockUp Tf Rubber  Two friends go into a strange store that turns out to offer latex monster cocks, complete with a demonstration from the shopguy of exactly how well they function. Added Feb 2018 1,331 words 7,357 views 5.0 stars (7 votes)
• Dogboys by Douglas Benjamin  2Animal Dom Fur  Richard and Toby’s usual training for subs is augmented with a new pill that turns out to have an unexpected potency. Added Jan 2015 2,897 words 16,350 views 5.0 stars (7 votes)
• The interrogator by ed  Cock 2Gay Musc Worship DeeperVoice Dom Nonc Mind  I’m a consultant for local law enforcement, with a unique ability to get the info they need. Added Jun 2021 3,187 words 1,860 views 5.0 stars (7 votes)
• Mandemic by Ziel  CockUp Balls Cock HyCock HyCum Immob  When the cock-growing virus breaks free, even quarantining may not be enough. Added Apr 2020 2,374 words 8,458 views 5.0 stars (7 votes)
• Muscle service station by Josef Howard  Balls Cock MuscUp Musc SizeUp Fur   Added Jul 2002 4,771 words 19,586 views 5.0 stars (7 votes)
• The new alphas go camping by Eric Aaldersen  CockUp Balls Musc Grad Supn Series  New alphas Brian, Jamie, and Jordan all enjoy fireside fucks with their lead alpha, Luke, after Luke passes on the Lore. But not before Luke and Brian bond as alphas for the first time! Added May 2020 5,376 words 2,418 views 5.0 stars (7 votes)
• Quinquetra by BRK  CockUp Cock MuscUp Grad Taller Retcon Supn  Exploring his workaholic husband’s ancestral house on his own, Wes encounters a strange symbol and a dreamlike man who seems closely connected to it. Added Oct 2020 2 parts 10,789 words 3,705 views 5.0 stars (7 votes)
• Stuff in the cellar by Charles Westfall  CockUp Cock HyCum MuscUp Musc PointyEars SizeUp  Richard is already good-looking and abnormally hung when he discovers some alien equipment in the cellar of his new house—including a vat of goo that transforms him into someone even hotter and more hung. And there’s no way Richard’s keeping his new gifts to himself. Added Jul 2002 4 parts 15,260 words 17,578 views 5.0 stars (7 votes)
• Supersized by Musclesaber  CockUp Balls Cock HyCock CumInf HyCum MuscUp BellyUp Taller Giant Super  After an experiment gone wrong, Max unexpectedly grows into a giant. After being saved by his superhero crush, Amplified, the pair tries to get the giant man’s growth under control. Added Nov 2020 2 parts 5,286 words 6,294 views 5.0 stars (7 votes)
• Tales from the dark city by Ogrebear  PointyEars Demons Orcs Fant  A human cutpurse escapes his pursuers, finding safety in, of all places, an orc buck bar. You can figure out what happens next. Added Jun 2005 7 parts 45,822 words 18,564 views 5.0 stars (7 votes)
• Toil and trouble by Ziel  Cock HyCock XCock XArms XLimb MuscUp Musc SizeUp Hallow  Wyatt and Jordan wander off the path at a haunted house and encounter a witch brewing up something just for them. Added Oct 2017 4,030 words 8,773 views 5.0 stars (7 votes)
• The trainer by Also Known As  AlwHard CockUp Cock MuscUp Musc SizeUp   Added Jan 2014 7 parts 22,349 words 18,923 views 5.0 stars (7 votes)
• A tune up by Dream Big  AlwHard CockUp Balls Cock Self MuscUp Musc  Jay’s new boyfriend is younger and hunkier than he is, making him feel unworthy. Kim coaxes him into a workout regime and hooks him up with a friend’s experimental workout supplement, and before long Jay is catching up to his boyfriend—a lot faster than he should be. Added Mar 2019 4 parts 8,646 words 9,890 views 5.0 stars (7 votes)
• An uneven exchange by Mr Arbitrary  WFoot  Max tries to indulge his foot fetish in secret, but his boyfriend James catches him and makes an unusual exchange. Added May 2018 1,545 words 3,396 views 5.0 stars (7 votes)
• What happened by Dream Big  CockUp Cock MuscUp Musc Libido Tf Bi  When Daniel meets up after college graduation with his high school friends Chris and Jane for a beach vacation, it turns out Chris has some important news: first, he’s into both of them, and second, he’s got access to his family’s secret body transformation serum, and he’s willing to share. Added Nov 2019 2 parts 8,209 words 6,533 views 5.0 stars (7 votes)
• Alpha Male by Josef Howard  MuscUp Musc Super  A gay man wakes one morning inside the body of the (formerly) straight star-spangled super-hero AlphaMale. Everything is terrific until AlphaMale’s studly sidekick finds out his body is inhabited by an imposter. Added Jul 2002 5 parts 15,096 words 33,881 views 5.0 stars (6 votes)
• Biking buddies by Eric Aaldersen  Musc   Added Dec 2005 5 parts 8,312 words 13,987 views 5.0 stars (6 votes)
• Birthday surprise by Kjarri  CockUp Balls Cock 2Cock HyCock Str Absorb Merg  Noah hopes, with some help from a friend, to give his boyfriend a birthday surprise he’ll never forget. Added Jul 2021 3,108 words 2,801 views 5.0 stars (6 votes)
• Chat transcript: More than plenty by BRK  XCock XLimb Rep SizeUp Infect Dialog M/M  Two guys chatting about extras end up giving each other the works. Added Nov 2014 2,780 words 6,242 views 5.0 stars (6 votes)
• Come to me by Richard Jasper  MuscUp Grad  Eric is a hot, young skimpy stud—what nowadays we’d call a twunk. Then he starts hearing a voice in his head. Eat big, lift big, get big! He follows the voice’s advice—with results more spectacular than he could have imagined! Added Apr 2020 10 parts 12,348 words 5,794 views 5.0 stars (6 votes)
• Coupon code: littlest by Ziel  CockDn  El decides to abuse a coupon code that promises to take “20% off”. He keeps stacking the coupon until there’s nearly nothing left! Added May 2020 7,522 words 3,232 views 5.0 stars (6 votes)
• Daddy muscle by Richard Jasper  MuscUp Musc AgeDiff  When Roger’s daughter is born, he decides it’s time to grow some serious muscle. He succeeds beyond his wildest dreams. It’s the Circle of Life! Added Apr 2020 7,446 words 4,227 views 5.0 stars (6 votes)
• The four jocks: The loft by BRK  CockUp Cock XCock XLimb MuscUp Musc Taller SizeUp Series M/M M/M/M/...  A quartet of very attractive clothing and fitness models sharing a loft try the transformation game during a power blackout, and are soon filled with awe at what they’re doing to themselves and each other as they play. Added Dec 2013 2 parts 9,337 words 12,496 views 5.0 stars (6 votes)
• Giant problems by aquila  HyCock HyCum Tf Taller Giant PSD SizeUp Viol  Caught up in a science experiment gone wrong, John finds himself at odds with his former boss and employer, leading to some giant problems. Added Jun 2019 3 parts 7,372 words 9,038 views 5.0 stars (6 votes)
• Go fuck yourself by Atokamematoke  Det  An unnamed man makes use of his strange abilities to penetrate himself, while observing the whole act at the same time. Added May 2016 1,020 words 6,047 views 5.0 stars (6 votes)
• Hold your tongue by Squeeshka  CockUp Cock NipC HyCum NipCum XCock Mcock   Added Jun 2012 7 parts 11,048 words 19,252 views 5.0 stars (6 votes)
• How it’s done by phallicphan  Musc Virgin Inc Bro Cent  College centaur shows his younger brother how to breed. Added Oct 2017 4,189 words 7,511 views 5.0 stars (6 votes)
• Incremental curse by BRK  SizeDn  Jared’s non-wizarding friend Lee accidentally triggers a booby-trap of a magician’s tome, causing him to shrink to the size of his own equipment. Added Jan 2012 Updated Apr 2017 3 parts 8,206 words 19,770 views 5.0 stars (6 votes)
• Lucas by Jefftaur  XCock Btaur 4Legs XLeg XLimb  If this is The Boy from Ipanema, then no wonder. Added Jul 2009 2,236 words 8,489 views 5.0 stars (6 votes)
• Me two by BRK  XCock XHead XLeg XLimb 3Legs XPec Rep Inc Twins Merg  Chris has some time off from his celluloid heroics as an A-list movie star and is going through fan mail when he finds a joke twin-making machine. Amused, he tries it out, with… unexpected results. Added Jan 2021 2,725 words 1,693 views 5.0 stars (6 votes)
• Orientation by Cris Kane  MFSwap 2Gay MuscUp MuscDn Musc Tf AgeUp  After a welcoming party, freshman roommates discover that life is different at college—and so are they. Added Apr 2019 4 parts 20,127 words 12,778 views 5.0 stars (6 votes)
• The permanent steroid by RdyRoger  CockUp Cock MuscUp Musc Taller SizeUp  Rod’s only joking about a permanent steroid that gives you your dream body and a better life along with it, but his eccentric inventor friend, the Professor, takes the idea seriously anyway. Added Oct 2019 2 parts 5,855 words 8,239 views 5.0 stars (6 votes)
• Safe sex by LuckyMuscle  Musc Tf SizeDn 2Inan   Added May 2006 3,528 words 15,334 views 5.0 stars (6 votes)
• Shrinking for Sean by Blue Blue  SizeDn   Added Jun 2003 2,694 words 20,660 views 5.0 stars (6 votes)
• Social dickstancing by Ziel  CockUp Balls Cock HyCock MuscUp Taller SizeUp Pandem  Dallas hunkers down for some self-quarantine with the goal of using his newfound free time to really bulk up, though he never would have imagined just how much he could grow! His new size brings new issues for him and his neighbor. Added May 2020 4,594 words 5,743 views 5.0 stars (6 votes)
• Stretchy summer’s day by Josh Dugan  Musc Str  The cool thing is that all this is really happening; it's not some digitally generated special effect. Added Sep 1997 1,611 words 9,977 views 5.0 stars (6 votes)
• Summer breeze by Dave  CockUp Cock Tf Alien  Swim hunk Mike is asked to employ his recently improved body and unstoppable libido in the service of intergalactic peace. Added Jun 2012 5,170 words 10,824 views 5.0 stars (6 votes)
• Transform by Also Known As  CockUp Cock Prehen XCock MuscUp Musc Worship DeeperVoice HyPher Infect Fly Series  Containing a secret is a hard thing to do. And the bigger the secret is, the harder it is to keep. No one was finding the truth of this more than those few men in charge at the Institute for Genetic Enhancement where the way has been found to transcend ordinary masculinity. The sequel to Supermen. Added Oct 2002 35 parts 131,918 words 43,771 views 5.0 stars (6 votes)
• Twinmaster by BRK  CockUp Cock XCock Rep MuscUp Musc  You can get lots of strange stuff on eBay—even a Twinner 3000. And if you’re obsessed with twins, you might just buy it even if there’s no chance in hell it could possibly work. Added Mar 2004 4 parts 3,500 words 7,907 views 5.0 stars (6 votes)
• All your feet on the table by James Fourlegs  Btaur 4Legs XLeg XLimb WFoot  The whole thing with wristfeet is really quite involved. Added May 2002 735 words 7,934 views 5.0 stars (5 votes)
• A blessing in disguise by Jo Psmythe  CockUp Cock HyCock XDig XAbs XHead XArms XLimb XPec Stack Str PSD SizeDn SizeUp Sugg Vore  Colin, an over-stressed college student, meets the man of his dreams in Chris. But Chris has a secret that might drive them apart—or bring them even closer together. Added Sep 2019 5,422 words 7,659 views 5.0 stars (5 votes)
• Centaur professor by James Fourlegs  4Legs XArms XLeg XLimb Rep Str Det Cent  This learned descendant of the famous teaching centaur Chiron passes on more than just wisdom. Added Mar 1998 2 parts 4,113 words 17,046 views 5.0 stars (5 votes)
• Changeday by Alakazam1988  CockUp Cock MuscUp Musc BellyUp Taller SizeUp Hairier Fatter  Now that all of the changes to your body take place all at once on the same day every year, Andrew and his two college buddies are doing everything they can to make their Changedays as dramatic as possible. Added May 2020 5,212 words 5,503 views 5.0 stars (5 votes)
• The cock-off by Armie Lingo  CockUp Cock   Added Oct 2005 3 parts 5,295 words 20,600 views 5.0 stars (5 votes)
• Crotchhead town by Cockatrice  Crotchhead Tf  When the only affordable roomshare he can find is in Crotchhead Town, Chris finds he’s more intrigued than he expected. Added Mar 2020 4,344 words 2,486 views 5.0 stars (5 votes)
• Double dream feat by Ziel  CockUp Balls Cock HyCock Rep  Aidan awakes from a surprisingly realistic dream to find things aren't quite how he remembered them. For starters, his dingy dorm room has been replaced with a reasonably sized apartment… an apartment he seems to share with his best friend. But stranger things are in store for Aidan as the morning unfurls. Added Jun 2018 4,723 words 6,532 views 5.0 stars (5 votes)
• Feet of magic by Brad Mercury  XCock XLimb  A one-on-one with this handsome magician becomes many on many. Added May 2002 1,474 words 7,729 views 5.0 stars (5 votes)
• The fugitive by Cris Kane  Cock Mental 2Gay Tf AgeDn Dom Slave Mind  One dark and stormy night, a desperate man pays a visit to a shop which he heard can do amazing things. Added Oct 2019 7,458 words 4,786 views 5.0 stars (5 votes)
• Gamble Labs by Moi Auci  CockUp Cock 2Cock HyCock Tf Series  A college guy goes looking for his missing special friend, a journey that takes him to an odd sperm donation lab and an unexpected transformation. Added Mar 2020 2,715 words 4,854 views 5.0 stars (5 votes)
• The jeans by Jefftaur  XCock 4Legs XLeg XLimb  Josh gets his hands on a pair of trick jeans and decides they’ll work better on someone half-asleep—like his buddy, Ty, who’d look really hot with extra feet. Added Aug 2013 579 words 7,675 views 5.0 stars (5 votes)
• My bodyguard by Richard Jasper  CockUp Cock HyStr MuscUp Musc Grad  “Worthless” Worthington High School sophomores Roger Jensen and Nick Delios bond when the latter saves the former’s scrawny ass from the class bully, Ralphie Peters. Their burgeoning affection and academic accomplishments are only exceeded by their ridiculous muscle growth. Added Aug 2020 4 parts 10,166 words 2,893 views 5.0 stars (5 votes)
• My friend Jon by Martin Boyar  4Legs XLeg XLimb 6Legs  Ever had one of those friends who can do anything? Added Sep 2004 1,427 words 6,940 views 5.0 stars (5 votes)
• My high school god by Peterbilt  Musc  Real life story about the author and another student when we were in high school. Added Feb 2017 2 parts 11,014 words 8,625 views 5.0 stars (5 votes)
• The other side by BRK  CockUp Cock HyCock Wings Musc PSD Space Cent Merm Future  Avery, a randy cargohauler, is piloting his navship through the dimensions between the point A and point B when an unexpected breach sends him into a surreal expanse… where a well-built, winged figure takes a less-than-angelic interest in him. Added Mar 2021 6,407 words 1,829 views 5.0 stars (5 votes)
• Ramón the developer by BRK  CockUp Cock NipC HyCum NipCum XCock XArms XLimb XPec Rep Stack 2Gay MuscUp Musc Taller SizeUp Series M/M M/M/M  Ramón is used to having lusty, eyes-only encounters with the hot and hunky guys in his office, but today everything seems so much more intense, and a little eye-fucking isn’t going to be enough. Added Aug 2018 4,544 words 7,131 views 5.0 stars (5 votes)
• Rapeenzel by Ziel  CockUp Cvore HyCock Prehen  Ziel got to thinking about old fairy tales and thought, “You know what these stories need? More gay sex and macro-dongs!” So he threw in a touch of cutesy fluff and some soft CV elements. Lots of sappy romance and monstrous dongs ensued. Added Sep 2015 6,583 words 18,988 views 5.0 stars (5 votes)
• Rubber suit surprise! by Peter Johns  CockUp Rubber  A yearning for a bit more rubber in his life is whispered in the ear of someone who can do something about it. Added Jan 2018 1,935 words 16,984 views 5.0 stars (5 votes)
• Side effects by Braun1  AlwHard CockUp Cock MuscUp Musc SizeUp   Added Feb 1997 7 parts 55,668 words 47,662 views 5.0 stars (5 votes)
• Small problems by The Obsessive-Compulsive  CockUp Balls Cock HyCock   Added Sep 2009 7 parts 9,668 words 31,646 views 5.0 stars (5 votes)
• Stanley’s cup by Ziel  CockUp Balls Cock HyCock MuscUp SizeUp  Jason has always wanted to play on the hockey team. It’s been his dream ever since he was a little kid. Unfortunately, his size and stature didn’t lend themselves to athletic endeavors. It seems he’s destined to live out his days helping the team from the sideline… not that that isn’t without its own perks. Added Oct 2020 5,959 words 4,811 views 5.0 stars (5 votes)
• Stretch by Josh Dugan  Str  OMG can this guy stretch. Added Jun 1997 986 words 10,710 views 5.0 stars (5 votes)
• Sugar packets by RdyRoger  CockUp Cock MuscUp Musc   Added Jul 2002 4 parts 11,543 words 20,813 views 5.0 stars (5 votes)
• Tim’s obsession by GulliverWB  SizeDn  Tim is a lot taller than his boyfriend Jeff, but that’s about to change. Added Jun 2002 5,084 words 15,354 views 5.0 stars (5 votes)
• Transform: Phone sex by Also Known As  CockUp Cock XCock MuscUp Musc SizeUp Infect Series Series   Added Jan 2014 5,573 words 8,372 views 5.0 stars (5 votes)
• Trying on my first rubber suit by James Rubberman  CockUp Balls Cock HyCum Rubber  A young man who just wanted to feel rubber against his skin from the waist down tries out a very nice-feeling suit, only to get more of an experience than he bargained for. Added Dec 2018 1,897 words 8,022 views 5.0 stars (5 votes)
• Under his wing by Richard Jasper  MuscUp Musc Taller  Frank Jones, 40, is a (gay) widower, recently out of the landscaping business and taking on a new career as a personal trainer. He’s delighted with his new neighbors, a divorcee and her 14-year-old son. The relationship that develops among the three of them is not one any of them would have expected! Just FYI: This one has a lot of muscle growth but is (unlike the author’s usual fare) a sad one. Added Jan 2021 10 parts 9,913 words 1,903 views 5.0 stars (5 votes)
• Vlogger by Sithspawn  Grad Tf Super Fly X-Ray Dialog  An anonymous guy begins to notice strange changes in his body and starts a video blog to document what’s happening. Added Mar 2021 12 parts 21,599 words 3,162 views 5.0 stars (5 votes)
• What I learned on my vacation by BRK  XCock XLimb Str  (Hint: it involves extra limbs and stuff.) Added Jan 2006 2 parts 2,038 words 10,411 views 5.0 stars (5 votes)
• A whole new world by MarcusB00  CockUp Cock HyCum HyStr MuscUp Musc Viol Alien  Two siblings, looking for a profit, break into an abandoned facility for potential treasure. Along the way they accidentally open a portal and get sucked in, and one of them get woken up by young dude with muscle powers in a new world. Added Nov 2020 Updated Jun 2021 3 parts 10,278 words 6,027 views 5.0 stars (5 votes)
• X-Dream Makeover by Cris Kane  Dumber Mental MuscUp Tf AgeUp Series  Rich from selling his tech stocks, David hopes to improve his love life with a makeover from a mysterious shop in Chinatown. Added Sep 2018 4 parts 15,543 words 7,715 views 5.0 stars (5 votes)

• Mutant by Marquis de Rent  CockUp Cock HyCock 2Gay Immob MuscUp Musc Giant SizeUp Super  Tom discovers that he is a mutant with the power to grow men that have sex with him. College jock Chris decides to take advantage of it. Added Oct 2016 4,202 words 39,566 views 5.0 stars (24 votes)
• Reality Pack by Thorn  CockUp Cock MusBr MuscUp Musc AssUp BellyUp Grad Taller PSD Hairier App AgeDiff Virgin Inc Bro Dad  What happens when the program you’re working on for school has a downloadable mod? You investigate it of course! Added Nov 2020 Updated Feb 2021 15 parts 79,094 words 23,628 views 5.0 stars (24 votes)
• A real man by DoubleCream  CockDn Addict 2Gay Musc Worship Scent Mpreg PSD SizeDn HairDecr Virgin Cage Dom HyPher  A douchey gym bro wakes up in another world, in another body. Added Jan 2021 Updated Jul 2021 5 parts 21,958 words 12,055 views 5.0 stars (23 votes)
• Resolutions by BRK  CockUp Balls Cock Self Mental MuscUp Libido TongueGr Retcon Nonc New Years  Ray intercepts a seemingly magical book of fill-in-the-blank New Year’s resolutions his boss, Danny, had ordered, and starts making plans for improving Danny’s too-boring sex life. Added Jan 2021 Updated Jul 2021 5 parts 28,472 words 10,238 views 5.0 stars (22 votes)
• Acclimating by Dream Big  CockUp Cock Musc PointyEars Tf PSD Demons Fant Shift  Dealing with finding yourself unwillingly summoned into a fantasy-themed world as a fearsome, horned, and hung demon is, it turns out, mostly a matter of adjusting yourself to your new situation. Added Mar 2020 Updated May 2021 39 parts 38,773 words 16,338 views 5.0 stars (21 votes)
• Spice up your life by Musclesaber  CockUp Cock MuscUp AssUp BellyUp Taller 4th of Jul Pandem  Roommates Sam and Collin try to return to a life of normalcy after the pandemic. Trying to have a get together with friends, Sam buys a new spice pack at the store that has some surprises in store for the pair. Added Feb 2021 Updated Jun 2021 7 parts 20,934 words 15,143 views 4.9 stars (19 votes)
• Tying the knot by DracumSum  CockUp CumInf MuscUp Tf Hairier Fur Were  Mike got lost in the woods, during the night of a full moon. He heard a twig snap behind him. And now he’s got a new boyfriend. Added Jan 2021 Updated May 2021 4 parts 19,702 words 9,141 views 4.9 stars (18 votes)
• Mutation by BRK  CockUp Cock HyCock XCock 4Legs XArms XLeg XLimb 3Legs XPec Rep Stack  Everyone in Portia, Alaska has been grown thicker and stronger and made irresistibly beautiful, but none more than the teens in the high school. Geek genius Mr. Lewis tries to roll back the most extreme changes in Mr. Casey’s class as a test case, but the trial doesn’t go anywhere near as planned. Added Jun 2010 Updated Jul 2018 4 parts 9,583 words 66,118 views 4.9 stars (17 votes)
• Werequeer by Anonymous  CockUp Balls HyCock HyCum Tf AgeDiff Inc Dad  A dad helps his son through his first transformation into a WereQueer. Added Apr 2004 2,426 words 25,980 views 4.9 stars (16 votes)
• Don’t delete this email by NBCK99  Cock XAbs XCock XArms XLeg XLimb MuscUp  Just keep reading, and keep and open mind. Relax your mind, relax your body. Your body is far more malleable than you realize. Added Jun 2015 1,506 words 10,426 views 4.9 stars (15 votes)
• Finding Owen by BRK  Cock MuscUp Musc Taller PSD SizeUp Hairier Inc Bro Viol Wbear Were Supn Series  Owen Banks witnessed Max finding his destiny up on the mountain, then realized he was changing, too. Was he like Max, or was something else awakening within him? He decided he was going to find out. Added Aug 2019 Updated May 2021 8 parts 52,629 words 18,059 views 4.9 stars (15 votes)
• Mysterious kidnapping by Joven  CockUp Balls Cock MuscUp Musc AssUp  Jared and Derek are traveling abroad when they’re suddenly kidnapped and secreted away in an isolated room… naked. They naturally become aware of each other’s junk, though Derek isn’t too pleased by Jared’s attention. But the situation with their equipment only gets more intense… Added Feb 2018 Updated Apr 2018 13 parts 22,924 words 22,894 views 4.9 stars (15 votes)
• Repair and alteration by Keyed  CockUp Cock MuscUp Musc  Ricky wants to get bigger, but working out and eating right haven’t done the trick. That why he’s standing outside a door in the side of a dingy warehouse marked with a number and the words “Genetic Repair and Alteration.” Added Sep 2018 2,478 words 7,650 views 4.9 stars (15 votes)
• Anthony by Chronologious  CockUp MuscUp Taller Giant PSD SizeUp Viol  Jack is having vivid dreams about his friend. Pure imagination or a sign of what’s to come? Added Mar 2021 Updated Apr 2021 6 parts 16,429 words 11,278 views 4.9 stars (14 votes)
• The greed demon by Marquis de Rent  CockUp Cock HyCock MuscUp Musc PSD Demons Incub  A greed demon finds a human with immense greed and decide to have some fun with him. Added Oct 2017 2 parts 7,674 words 19,537 views 4.9 stars (14 votes)
• Old buds, new bods by CubGuySC  MuscUp Musc Fur   Added Jul 2006 5,188 words 21,473 views 4.9 stars (14 votes)
• Quarantined by MuscleNexus  MuscUp Musc Nonc Infect  Devon is excited to hear his lover is returning from his overseas deployment early, after escaping the outbreak of a strange virus that put the rest of his team in quarantine. Only, Scott doesn’t seem to be quite himself… Added Aug 2018 1,870 words 7,666 views 4.9 stars (14 votes)
• Curious cats by FanTCMan  CockUp Cock MuscUp Musc Hairier Nonc   Added Nov 2002 8,423 words 28,495 views 4.9 stars (13 votes)
• Hothorne Academy by Also Known As  Cock Musc  Toby is selected for a full scholarship to a prestigious prep school he’s never heard of, and from the moment he arrives he’s stunned by how amazing the place is, how hot the guys are, and the fact that he’s more turned on, moment by moment, than he’s ever been before. Added Sep 2018 Updated Feb 2019 3 parts 20,022 words 7,869 views 4.9 stars (13 votes)
• Kenji by Dream Big  CockUp Cock HyCock Self HyCum MuscUp Musc Taller SizeUp Race Nano  The new stock guy at work, Kenji, is Sam’s pure fantasy—cute, tall, muscled, cheeky, and packing—and Kenji seems just as appreciative. There’s a secret about how Kenji got that way, though, which Sam accidentally discovers the hard way. Added Feb 2019 Updated Mar 2019 6 parts 19,054 words 15,666 views 4.9 stars (13 votes)
• The magician by The Gecko Rose  CockUp HyCock XCock Str Det Hypno  Rich doesn’t believe in magic, until a little-known Vegas stage magician with some remarkable purple paste shows him and his two eager friends (not to mention an audience of very interested guys) exactly what magic can make possible. Added Jul 2015 Updated Apr 2018 8 parts 11,972 words 20,817 views 4.9 stars (13 votes)
• Spare by Double-U  MuscUp Musc Suit  Dan, a muscular football jock, attempts to recruit his friend, Tom, for a football tournament after his team ends up short a man. When Tom declines, pleading a lack of skill and stamina, Dan offers Tom something that he ultimately can’t refuse. Added Sep 2017 4,474 words 10,901 views 4.9 stars (13 votes)
• An app for the ages by Seth Peterson  CockUp Cock Fem Dumber 2Gay MusBr MuscUp Musc Taller Hairier App Nonc  An app that can change people on a whim? A totally ego-maniacal straight boy with a strong distaste toward his nerdy, unappreciative roommate? Well, things can only get more exciting from here, can’t they? Added Dec 2018 3,147 words 19,770 views 4.9 stars (24 votes)
• The band by BRK  Cock HyCock XArms XLimb Rep MuscUp PSD SizeUp Sugg M/M M/M/M  Eager to improve his personal appearance for the sake of the band he’s fronting, Ryan finds a solution that involves dramatically changing how he looks. Now he just has to keep the weird parts of it secret from his friends and roommate. Added May 2002 2 parts 7,461 words 16,853 views 4.9 stars (12 votes)
• School for studs by Josef Howard  HyCum 2Gay MuscUp Musc Virgin  Eldon agrees to hand himself over the so-called School for Studs for three years, knowing that the sex they’ll arrange for him with the sexy well-to-do will be worth the commitment. What he doesn’t expect is the expect the other Studs will have on him. Added Feb 2017 Updated Mar 2017 8 parts 17,252 words 18,330 views 4.9 stars (12 votes)
• Body game: Encounter 813 by BRK  AlwHard CockUp Balls Cock HyCock HyCum XDig XAbs XCock XArms XLimb XPec XTongue Rep Stack MuscUp Str FootUp Taller PSD SizeUp Hairier HyTongue TongueGr Mcock Inc Bro Series M/M M/M/M  Reggie isn’t sure why the team-building get-together for the web design firm he’s working for is being held at an abandoned mall; he just knows he can’t get his sexy boss out of his mind. Added May 2016 Updated Jun 2021 9 parts 49,133 words 31,823 views 4.9 stars (22 votes)
• Hey, buddy by Dream Big  CockUp Cock Self MuscUp Musc Grad Tf Giant PSD SizeUp  Ben’s high school crush, Charlie, resurfaces in his life after a mysterious incident at sea left him with a strange tattoo and a propensity for slow, inexplicable growth. Added Oct 2019 Updated Aug 2020 15 parts 15,491 words 16,417 views 4.9 stars (22 votes)
• The boy who cried big by Kalos Kiryu  CockUp Balls Cock HyCock HyCum MuscUp Musc  When a potential boyfriend suspects his lover of lying about his true size, he accidentally gives him more than he ever cared to have. Added Mar 2019 4,509 words 13,548 views 4.9 stars (11 votes)
• Brotherly love by TheSizeKing  CockUp Cock HyCock MuscUp Musc Taller SizeUp Inc Bro  Reece is a 20-year-old guy who has everything going for him in life: good looks, good brains, good personality, even a well-above average endowment between his legs. His younger brother, Michael, is exactly the opposite. Michael is about to turn 18, and could use a little boost before he goes out into the adult world. Added Apr 2020 5 parts 7,816 words 9,865 views 4.9 stars (11 votes)
• The Ixlutani by Lloyd Irving  CockUp CockDn CTheft Cock Musc Tf Taller PSD SizeDn SizeUp Bi Het Supn  Kyle Anderson set out with his best friend Ben Miller for one last hurrah, revisiting the woods behind their childhood homes and the mysterious cave they discovered there, before Kyle’s impending nuptials with his longtime girlfriend, Olivia. What neither man knew was that after that day neither their bodies nor their relationship would ever be the same. Added Jun 2021 Updated Jul 2021 6 parts 46,276 words 5,627 views 4.9 stars (11 votes)
• Satyr in the city by Muscle Bear Daddy  Cock MuscUp Musc Tf SizeUp Nonc Fur  A rough, unasked-for encounter into the woods leads to induction into a new life as a satyr. Added May 2017 Updated Mar 2019 3 parts 3,980 words 14,323 views 4.9 stars (11 votes)
• Self-improvement by BRK  CockUp Cock Rep MuscUp Alien  Cam needs to get the cute guy he’s dosed with a little bit of experimental physio-changing serum to say what he wants in order for the transformations to start. He’s planning to keep things small and subtle, only Aiden isn’t as bashful as he appears, and he’s also just a tiny bit drunk. Added Sep 2018 4,175 words 9,227 views 4.9 stars (11 votes)
• The application by SuperWaffle  MuscUp Musc Worship SizeUp Hairier App Fur  A powerful story in which an anthro fox named Bradley learns that a body-morphing app is a wondrous, life-changing thing for himself and for new friends as well—if it doesn’t fall into the wrong hands, that is. Added Apr 2015 8 parts 44,454 words 38,735 views 4.9 stars (20 votes)
• The Body-Jack 9000 by The Gecko Rose  CockUp Self XArms XLimb Merg  A young man discovers the most incredible jackoff device ever, and he just can’t stop playing with it! Added Feb 2018 Updated Mar 2018 6 parts 6,176 words 13,761 views 4.9 stars (20 votes)
• Christmas wish by Riu  CockUp Cock HyCock 2Gay MuscUp Musc Sugg Inc Bro Xmas  Two grown-up brothers follow their childhood tradition of waiting up for Santa. Only this time, after a few shots of special whiskey, a different kind of Christmas wish is granted. Added Dec 2016 3,925 words 20,478 views 4.9 stars (20 votes)
• Alpha Jamie and Alpha Jordan spread their seed by Eric Aaldersen  Balls Cock Musc Virgin Supn Series  Not even aware of their new status as alphas, Jamie and Jordan have loads of fun with their teammates. Added Apr 2020 5,341 words 4,102 views 4.9 stars (10 votes)
• C is for… by King Dave  CockUp Cock 2Gay MuscUp Musc Grad AgeDn  Owen decides to order some custom health supplements online. He never expected them to have these kinds of side effects. Added Feb 2021 Updated Mar 2021 4 parts 8,701 words 11,988 views 4.9 stars (10 votes)
• The challenge by BRK  CockUp Cock MuscUp Musc M/M M/M/M/...  A crop of fraternity pledges are given a unique challenge: to create the perfect man out of a set of randomly assigned abilities. Added Sep 2010 2,956 words 20,094 views 4.9 stars (10 votes)
• Choranaptyxic by Marquis de Rent  CockUp Cock MuscUp Musc PSD SizeUp  A young man uses a dating app to have some fun. Everything goes well until his date inexplicably starts to grow... Added Feb 2017 2,807 words 15,411 views 4.9 stars (10 votes)
• The guy with the dick by BRK  CockUp HyCock XCock Musc M/M M/M/M  One morning at the park, Daniel encounters an unbelievably hot guy with a very impressive dick. Added Apr 2017 3,287 words 14,735 views 4.9 stars (10 votes)
• The journal by Braun1  CockUp Balls Cock MuscUp Musc SizeUp Hairier Infect  An ordinary college guy finds himself changing after a steamy encounter with a hunk named Brad, and decides to start documenting everything that’s happening to him. Added Feb 2003 11 parts 30,474 words 19,625 views 4.9 stars (10 votes)
• Next level love by Eclipse  CockUp Cock HyCum Mental 2Gay MuscUp Musc SizeUp App Retcon Series  Dylan gets an app that claims to bring him closer to his soulmate, but he’s not prepared for the consequences. Added Aug 2020 7,202 words 3,852 views 4.9 stars (10 votes)
• Pride by NBCK99  CockUp Cock MuscUp Musc DeeperVoice Taller PSD SizeUp Hairier Pride  Jake attends his first Pride parade with his boyfriend Ross and is a bit overwhelmed, so they step into a bar—where it turns out the impressively hot and muscular patrons and staff take a shine to the new arrivals. Added Jul 2018 6,482 words 10,022 views 4.9 stars (10 votes)
• Santa’s big surprise by Silverfox Dad  MuscUp Musc SizeUp Infect Xmas Series  Jeremy has not only been obsessed with Santa, he's seen him and knows he's real. So when a friend at the gym gives him a muscle-growth supplement meant to give him confidence enough to talk to his beautiful bodybuilder crush Marco, Jeremy decides instead to give Santa a gift of his own. Added Jan 2017 3 parts 7,594 words 13,770 views 4.9 stars (10 votes)
• Tell me about my boner by BRK  CockUp Cock Self Sugg  The gag tee shirt with a provocative slogan seemed like a good idea when he’d ordered it during a late-night stroke session, but now that it’s here it seems intent on changing his life in ways he might not be ready for. Added Oct 2019 2 parts 6,709 words 9,532 views 4.9 stars (10 votes)
• You and I: The greatest fuck in the world by Also Known As  CockUp Cock Mental MuscUp Musc Sugg Series  Has the world-altering protagonist, the self-proclaimed most perfect and most powerful man in the world, met his match? Added Apr 2019 Updated Jun 2019 3 parts 17,006 words 9,102 views 4.9 stars (10 votes)
• First big date by Peterbilt  CockUp Cock Musc AgeDiff Virgin Inc Dad  Football star Jason comes home from his first big date and ends up having a heart-to-heart with his dad. Added Dec 2007 3 parts 36,548 words 29,179 views 4.9 stars (19 votes)
• The good freak by Also Known As  AlwHard CockUp Balls Cock HyCum MuscUp Musc Grad Taller SizeUp Infect  Kevin Peters is a cheerful, very fit young man who happens to be getting bigger and hotter in every way, much to the bemusement (and secret arousal) of his doctor. Soon the guys around him are growing too, and Dr. Donaldson discovers even he’s not immune... Added Nov 2002 33 parts 33,508 words 37,452 views 4.9 stars (19 votes)
• Bear’s den by Pfefferooney  CockUp Cockfuck Balls Cock HyCock NipCum MuscUp Musc BellyUp SizeUp Hairier Infect  David is a small university student and he wants nothing more than to be, and be with, an enormous man. On a fateful day, he stumbles upon someone who can make his dream come true. Added Mar 2019 Updated May 2019 3 parts 9,022 words 21,996 views 4.9 stars (9 votes)
• The legend of Ben by TreborNawoc  CockUp Cock HyCock Self XCock XHead Rep Str Mcock  When Ben found out the things he could do with his body, he became very popular with all of his randy dormmates. Added Jul 2021 2 parts 2,867 words 2,502 views 4.9 stars (9 votes)
• Lunch of champions by Cris Kane  CockUp Cock 2Gay MuscUp Musc  Skinny nerd Tyler is befriended by a high-school football star and slipped some of the team's special training diet. Added Dec 2018 7,493 words 8,753 views 4.9 stars (9 votes)
• The six pack by Cris Kane  CockUp CockDn MFSwap Fem Dumber 2Gay MuscUp BellyUp Tf Taller SizeDn SizeUp Race Hairier Series  Returning from a Mexican vacation, a gay couple bring back a mysterious drink for their friends to try, bringing on some changes for the group of friends that require a great deal of getting used to. Added Sep 2018 9 parts 38,564 words 17,520 views 4.9 stars (9 votes)
• The swimming hole by JayPat  MuscUp Musc Viol  When Matt laments the sadly unmuscled state of his young body, all he hears is that he has to put in the work. Only, his swimming buddy Jimmy seems to be getting muscles all on his own, and he’s not even hitting the gym… Added Sep 2018 8 parts 42,632 words 18,238 views 4.9 stars (9 votes)
• Onion Hill Manor by William Allen  CockUp Cock HyCock XArms XLeg XLimb 2Gay Immob MuscUp Musc Handsomer Tf Giant SizeDn SizeUp  Unremarkable twenty-something gets a new job working at a strange mansion alongside a team of beefy, muscle hunks. Added Oct 2017 Updated Dec 2017 5 parts 25,642 words 20,328 views 4.9 stars (17 votes)
• The pinball machine by Thorn  CockUp Cock MuscUp  Tyler works at an arcade with a secret pinball machine that unveils itself for customers when it wants to be played with. Added Jan 2021 Updated Feb 2021 2 parts 11,764 words 5,948 views 4.9 stars (17 votes)
• Software upgrades by King Dave  CockUp Cock MuscUp Grad Taller SizeUp Retcon Sugg Xmas Hanukkah Pandem  Like many people, Jacob has been working from home since Covid-19 hit in March. Now in late December, an update to the video chat software gives him and his hunky coworker a pleasant surprise. Good think he didn’t take the day off! Added Dec 2020 Updated Jan 2021 3 parts 7,945 words 6,911 views 4.9 stars (17 votes)
• The four jocks: College buddies by NBCK99  AlwHard CockUp Cock Self XCock XLimb MuscUp Musc Retcon Inc Bro Series  NBCK99 tries his hand at a "Four Jocks" story, involving four insanely hot jocks growing and changing each other as they feed each others’ attraction and arousal. Added Aug 2015 4,873 words 17,358 views 4.9 stars (16 votes)
• Hollyville by Tereshky  CockUp Balls Cock Prehen HyCum XAbs XArms XLimb XPec Rep Stack Wings MuscUp Musc Tf SizeUp Tent Horror  The sleepy town of Hollyville, Alabama finds that strange things are happening to some of its people. It’s one man’s job to find out, but is he prepared for the mystery, suspense, and life-altering changes to come? Are you? Added Nov 2019 Updated Feb 2020 9 parts 43,978 words 14,703 views 4.9 stars (16 votes)
• The Arsenal of Secrets by BRK  CockUp Cock XAbs XArms XLimb MuscUp Tf Taller SizeUp Fant Series  Griffin, tired of being smaller than his farm-brute brothers, stumbles backwards into a way to make himself more like what he wants to be: big and strong enough to catch the eye of a beautiful, bashful, broad-shouldered apprentice blacksmith named Wass. Added Aug 2020 10 parts 25,798 words 4,557 views 4.9 stars (8 votes)
• DeadGuy by BRK  CockUp Cock MuscUp Grad Taller App Sugg Merg Ghost Supn  Wyatt downloads an app called DeadGuy, which is supposed to be the app responding randomly to your questions in the voice of a fake cartoon ghost. What Wyatt doesn’t know is, the ghost isn’t fake at all. Added Feb 2021 3,502 words 3,830 views 4.9 stars (8 votes)
• Drink by Also Known As  Cock Self MuscUp Musc  A certain bar offers drinks with a secret and special kind of potency… just ask for “Rex”. Added Jan 2014 3 parts 18,838 words 18,078 views 4.9 stars (8 votes)
• Esgrow by Ziel  CockUp Cock MuscUp Musc Taller SizeUp  Gil is the quintessential dweeb. Just a short, scrawny, number-crunching nerd… until he decides to make some modifications to a certain legal document. Added Jun 2021 3,194 words 3,614 views 4.9 stars (8 votes)
• Fun with math by Josef Howard  CockUp Balls Cock MuscUp Musc SizeDn SizeUp   Added Mar 2003 2,294 words 13,605 views 4.9 stars (8 votes)
• Honey and cum by Ro_burrr  CockUp Cock MuscUp Musc Taller SizeUp Hairier Virgin Het  Anna helps her husband with his “small problem”, with (un)foreseeable consequences. Added Jan 2021 5,649 words 4,752 views 4.9 stars (8 votes)
• Mindfuck by BRK  CockUp Cock Self  A budding wizard’s search for hands-free j/o leads him unexpectedly into a life of constant stimulation. Added Dec 2013 3,143 words 13,984 views 4.9 stars (8 votes)
• My man by hyperboi  Cock 2Gay Musc Mind  Straight jock Brian is okay with his muscle queen roommate, Kevin, affably resisting Kevin’s playful advances. Kevin, however, has some ideas about how to give Brian a change of attitude. Added Mar 2016 6,077 words 17,660 views 4.9 stars (8 votes)
• The people you find on the internet by Miguel Burgos  Cock HyCum XDig XCock Taller PSD  Enrique tried dating on the internet and started to encounter some really, really different people. Added Dec 2015 Updated Oct 2016 3 parts 4,540 words 13,185 views 4.9 stars (8 votes)
• Practical FX by MuscleMonkeh  CockUp MuscUp Gut Tf SizeUp 2Animal AgeDiff Nonc Fur Fant Mind  A special effects movie mogul, used to getting his own way, tries to muscle an especially gifted young producer into working for his production company. Added Jun 2018 5,070 words 9,402 views 4.9 stars (8 votes)
• Size matters: A cautionary tale by borednhony  CockUp Balls Cock HyCum  Jack’s sex life had ground to a halt. His regulars up and gone, Grindr providing no relief. If only he were a bit bigger down there, this would all be so much easier. Stuck with just his hand and his trusty porn playlist, a message pops up… Added Feb 2021 Updated Apr 2021 2 parts 4,649 words 6,300 views 4.9 stars (8 votes)
• The watchman by Jefftaur  XCock XArms XLimb   Added Mar 2005 4,495 words 7,247 views 4.9 stars (8 votes)
• Anomalous Materials Research Facility 3‑DL by Mad Dog  CockUp Cock HyCock XCock XHead XLimb Mpreg Tf SizeUp Fur Cent Demons Orcs  Working with exotic materials on a distant research space station is all in a day’s work for Carter, a theoretical physicist and the sole mundane human in a crew of sexy (and sex-loving) creatures straight out of a very dirty fantasy novel. But when you work with stuff that scoffs at the laws of physics, normality can’t remain unbent forever. Added Sep 2019 Updated Mar 2020 6 parts 32,475 words 15,308 views 4.9 stars (23 votes)
• The bodyguards by Alakazam1988  CockUp Balls Cock MuscUp Musc PSD SizeUp Infl Inc Bro Twins  Two already huge and beautiful brothers apply for a job guarding a man who might be able to help them get even bigger. Added Apr 2021 Updated May 2021 4 parts 7,528 words 12,593 views 4.9 stars (23 votes)
• Centaur mania by Josh Dugan  Cock XCock Llegs XLeg XLimb Cent  How come it's the mad geniuses who get to have all the fun? Added Jun 1997 1,887 words 14,634 views 4.9 stars (15 votes)
• The Christmas ghost of FitzHardinge Manor by BRK  CockUp Cock MuscUp Musc Tf SizeUp Viol Merm Ghost Incub Supn Xmas Immort Invis 19th Cent M/M M/M/M  A sometimes dark tale of a young man consigned to the guardianship of witches, only to be turned by a sex-starved, secrecy-obsessed sorcerer-suitor into a being unheard and unseen, capable of sharing the pleasure of touch, but bound to a single day of the year; and how from these ashes he rises to find what he can become in this new life that has been forced upon him. Added Dec 2017 Updated Dec 2018 3 parts 22,408 words 11,071 views 4.9 stars (15 votes)
• The double room by Tyler Wilson  Cock XCock XHead XArms XLimb XTorso Inc Twins Merg  Tyler is confused to find two roommates listed for his double room at the university, but quickly finds that this new arrangement will work very well. Added Jul 2017 Updated Feb 2019 3 parts 7,922 words 11,211 views 4.9 stars (15 votes)
• Coach Barker by Argenti  CockUp Cock HyCock HyCum 2Gay MuscUp Musc Taller Giant PSD SizeUp Infect  Coach Travis Barker has a special gift, and when he shares this gift with Adam, change begins to unfold around them. Added May 2019 Updated Jun 2019 9 parts 18,987 words 26,345 views 4.9 stars (22 votes)
• Alt-world by BRK  CockUp Cock HyCock XArms XLimb Rep Musc PSD SizeUp Inc Twins M/M  The alternate reality was constructed so the guys fell within broad parameters. Except they were a little skewed toward the exceptional. And something in the software seemed to like outliers... Added Jul 2011 2 parts 5,265 words 25,311 views 4.9 stars (14 votes)
• A most unusual curse by BeefyBullGuy  Cock 2Cock Tf Nonc Absorb  Jackson’s misadventures in a Asian shrine to cock lead to an unexpected curse. Added Mar 2018 3 parts 6,032 words 15,538 views 4.9 stars (14 votes)
• The adventures of Corey Harddwick by BRK  XArms XLimb M/M  A screen actor’s try at a big stage role was already weird, before the moment where he discovered he was exceptionally well armed for the role. Added Mar 2013 Updated Mar 2018 3 parts 8,008 words 11,916 views 4.9 stars (7 votes)
• The bonding by NBCK99  CockUp Cock MuscUp Musc Taller SizeUp AgeDn Retcon Sugg  Roy is reluctant to meet up with Cody, the hottie he’d met online—even more so because they’re meeting up at a dance club, and Roy didn’t do clubs. But Cody manages to get Roy to see things his way, though not without some surprises for Cody, too. Added Apr 2016 7,120 words 14,383 views 4.9 stars (7 votes)
• The boost by Cris Kane  Dumber 2Gay MuscUp Musc  The mysterious boost in a health club’s smoothies causes fast and dramatic changes. Added Jul 2015 2 parts 12,889 words 19,869 views 4.9 stars (7 votes)
• Casey’s machine by FanTCMan  MuscUp Musc   Added Aug 2002 4,566 words 19,836 views 4.9 stars (7 votes)
• Cody. Ryan. Leo. by Johan Johnson  CockUp Cock Rep  With cloning perfected, it may be an easy matter to have three identical boyfriends, each genetically engineered with special gifts all their own… but experiencing it is something else again. Added Sep 2012 3 parts 5,016 words 12,730 views 4.9 stars (7 votes)
• Demigod chronicles I: Herakles by aquila  CockUp Cock HyCock MuscUp Musc Taller PSD SizeUp  A powerlifter finally hits his goals with his trainer, only to realize that there’s something big he should know about him. It isn’t all shakes and good form that gets you to top shape… sometimes, you gotta pray. Added Dec 2018 2 parts 3,646 words 7,117 views 4.9 stars (7 votes)
• Disappearance on the Overland Limited by Eclipse  CockUp Cock MuscUp Scent Hallow  A train of luxury, a missing husband, and a mysterious monster on the Nevada sands await a detective and his assistant, but neither man can foresee the culprit’s intentions. Added Oct 2020 4 parts 6,609 words 2,197 views 4.9 stars (7 votes)
• First costume by Cockatrice  NoCock XHead WFoot Crotchhead Det Tf Suit 2Inan Mcock Rubber Merg Andr Cent Hallow  Luke is invited to a special Halloween party, though he does not know yet just how special that party is going to be. Added Oct 2020 6,359 words 3,207 views 4.9 stars (7 votes)
• Free upgrade by BRK  XCock XArms XLeg XLimb 3Legs Rep MuscUp Musc Handsomer Taller Nonc  A harried traveler on a multi-leg international trip starts getting free upgrades every time he tries to get his seat assignment, and they aren’t just to his cabin class. Added Jun 2019 1,746 words 4,179 views 4.9 stars (7 votes)
• Glitch by BRK  AlwHard CockUp Cock XDig XCock XArms XLeg XLimb 3Legs XPec Rep Stack NoShirts HyTongue TongueGr Retcon Inc Twins  Undercover as a university student inside a thriving, all-gay digital community, Torin starts experiencing unexplained, universe-wide glitches that progressively and seamlessly change Torin and everyone around him. Added Dec 2020 Updated Mar 2021 4 parts 13,963 words 3,923 views 4.9 stars (7 votes)
• Huge changes: Book two by RdyRoger  CockUp Balls Cock MuscUp Musc PSD SizeUp Hairier Nonc Infect Series  Jason and Todd decide to help Mason, not suspecting that Mason will get an extra helping of wishes, or that Mason’s fantasies of love and growth will start affecting more than just his partners. Added Dec 2017 2 parts 9,859 words 14,536 views 4.9 stars (7 votes)
• Hugecock diary by Anonymous  CockUp Cock Self HyCum Virgin   Added Dec 2003 13 parts 10,948 words 25,645 views 4.9 stars (7 votes)
• Hung by the fireside with care by AndroSun  XDig XAbs XCock Btaur 4Legs XArms XLeg XLimb Xmas  A visit from Saint Nick can lead to your wishes coming true—even the ones you didn’t actually mail to the North Pole. Added Aug 2013 2,777 words 7,326 views 4.9 stars (7 votes)
• I accidentally shrunk my cock! by Steve McMoon  CockUp CockDn Cock  Steve finds a website where some transactional changes in cock size are going on. He's already hung, but decides to try getting even bigger. Added Oct 2020 999 words 3,862 views 4.9 stars (7 votes)
• The locker room thief by CockTFBoi  CockUp CockDn CTheft MuscUp MuscDn Taller SizeDn SizeUp  Riley, a personal trainer, heads into the gym to get ready for his first client of the day. Things take a strange turn when his client, Ethan, suggests a new exercise regimen. Added Jan 2021 3,234 words 6,436 views 4.9 stars (7 votes)
• Manscapes by FanTCMan  MuscUp Musc Hairier   Added Jul 2002 7 parts 14,338 words 19,672 views 4.9 stars (7 votes)
• More than advertised by LookinToGrow  CockUp Cock MuscUp Musc PSD SizeUp  Two men meet at the gym one day, and both hope to become even bigger and stronger then they once were. Added Jan 2017 Updated Nov 2018 4 parts 4,732 words 18,410 views 4.9 stars (7 votes)
• Return of the cocksucking fleshsock by BRK  CockUp Cock XAbs XArms XLimb Fant Series  Kurn, a mountain warrior with an unruly, mouth-craving cock, has been sent to offer a boon to the great Huuman, Lord Griffin, Defender of Kossh, for his help in expunging the scimitar-raiders. To his shock, however, Lord Griffin instead offers the valiant Kurn a gift that answers his most compelling need. Added Sep 2020 Updated Nov 2020 3 parts 10,076 words 4,244 views 4.9 stars (7 votes)
• Titan video by Anonymous  CockUp Balls Cock HyCock HyMusc Immob MuscUp Musc Taller Giant   Added Jul 2002 2 parts 7,735 words 19,831 views 4.9 stars (7 votes)
• Weho adventure by FanTCMan  MuscUp Musc Handsomer AgeDiff Inc Dad  The only thing hotter than seeing the amazing bodybuilder Steve Reilly was the possibility of catching his eye. Added Feb 2003 10,627 words 12,187 views 4.9 stars (7 votes)
• Wishing star by EcstaticS  CockUp Cock Retcon Bi Supn  Chris sees a guy with a really massive dick and wishes on a star for a dick that was even bigger. What he doesn't know is that sometimes the stars are listening. Added Jun 2020 7,594 words 5,141 views 4.9 stars (7 votes)
• No reason boner by Egi  CockUp Self Grad  While slogging through high school, Quinn becomes inconvenienced by something that happens to every teenager. However, this problem is much more serious for him, and maybe isn’t actually a problem at all. Added Jun 2017 Updated Mar 2018 8 parts 13,863 words 20,865 views 4.9 stars (20 votes)
• They came from outer space by WordShop  CockUp Balls Cock MuscUp Musc Hairier Plants Inc Bro  Playing with meteors can have strange side effects. Two young brothers living near a military base find themselves changing from exposure to meteorite dust. Added Oct 2017 Updated Nov 2017 4 parts 12,642 words 18,610 views 4.9 stars (20 votes)
• Buck by BRK  2Gay MuscUp Musc Sugg M/M  Davis is taken aback when a cocky new partner he’s never met before climbs unexpectedly into his car during a stake-out. But it’s what Buck has to say that really takes him by surprise. Added Aug 2017 5,289 words 12,449 views 4.8 stars (13 votes)
• Bulking by Proteus  MuscUp Gut Musc AssUp Grad Hairier  Sometimes, when people have a crush on their hunky roommate, they act on it by secretly trying to make the guy progressively hotter. Added Mar 2013 6 parts 7,143 words 39,401 views 4.8 stars (13 votes)
• Games by BRK  CockUp Cock XDig XCock XLimb SizeUp M/M M/M/M M/M/M/...  Dave totally forgot that when he got his new powers, and started granting all his buds three wishes, he let me keep the third one secret. And that secret wish just happens to be the ability to fuck around with Dave’s wishes. There was so much fun to be had with that particular capability. Added Sep 2003 2 parts 3,389 words 25,717 views 4.8 stars (13 votes)
• Real daydreams by NBCK99  CockUp Cock MuscUp Musc  The power of imagination works its magic on a beautiful jogger. Added Jul 2015 3,366 words 16,862 views 4.8 stars (13 votes)
• Support line by BRK  AlwHard CockUp Cock HyCock Self XCock XArms XLimb XTorso Rep Det App Infect Dialog  Customers interacting with the reps at the Metabods Support Line tend not to get the service they’re expecting—though it is always above and beyond. Added Feb 2012 Updated Mar 2021 4 parts 12,557 words 25,844 views 4.8 stars (13 votes)
• The commute by BRK  MuscUp Musc Taller SizeUp M/M  David's twenty-fifth birthday was supposed to be the start of new life, with a promotion and a live-in boyfriend. When all that suddenly goes up in smoke, all he can do is distract himself on the train into the city with imaginings of the lithe, well-muscled body of the fellow commuter sitting across from him. Added Feb 2017 4,293 words 10,532 views 4.8 stars (12 votes)
• Letters flew across the room by MainAttraction  CockUp Balls Cock HyCum Rep MuscUp Musc Taller SizeUp  A tale of a man suffering the heat and eagerly awaiting a nice breeze. Added Aug 2018 2 parts 3,571 words 8,312 views 4.8 stars (12 votes)
• Pollination by Absman420  CockUp Balls Cock MuscUp Musc Alien  The beginning of the most erotic alien invasion/muscle growth story… ever! Added Oct 2020 5,867 words 4,522 views 4.8 stars (12 votes)
• Second sight by BRK  Cock XCock MuscUp Musc SizeUp  Danny passes the time reimagining the guys that pass through his life, including the increasingly hot and hung delivery boys for the local take-out place. Added Nov 2003 3 parts 5,079 words 15,906 views 4.8 stars (12 votes)
• The beast with a billion boners by Ziel  Rep SizeDn Tent  Occult book store employees Lee and Gavin discover a comic book called "Beast with a Billion Boners." They figure they’ve both seen enough hentai to know where this is going. They were wrong. Some tentacle fun, raunchy gay smut, and even some shrinking and macro/micro sizeplay ensue. Added Dec 2015 9,663 words 10,139 views 4.8 stars (6 votes)
• A Christmas miracle by Unknown  MuscUp Musc Xmas  What’s Santa packing as a Christmas gift for scrawny Tim? In Tim’s dreams, it’s muscle, for starters. Added Jun 2002 2 parts 2,160 words 21,359 views 4.8 stars (6 votes)
• Coffee date by BRK  CockUp Cock XDig XCock XHead 4Legs XArms XLeg XLimb 3Legs XPec XTorso Rep Stack Retcon  Jeremy gets dragged to a blind date at a coffeehouse that seems to have an inexplicable effect on Jeremy’s body. Added Aug 2020 2,014 words 2,773 views 4.8 stars (6 votes)
• Cut and paste by Josh Dugan  Cock XCock XLimb Det  This altered computer can Photoshop John's big, beautiful body in real life. Added Sep 2004 1,608 words 10,935 views 4.8 stars (6 votes)
• The dildo of the demigods by SuperWaffle  CockUp Cock HyCock NipC NipCum MuscUp Musc PSD SizeUp  Craving a size-giving artifact, the Dildo of the Demigods, a gym teacher steals it from one of his students, little realizing he’s just as susceptible to its insane growth-lust as the one he’d taken it from. Added Aug 2020 2 parts 18,865 words 6,873 views 4.8 stars (6 votes)
• Endmyths by Taur Reg  XLimb AgeDiff Inc Dad Cent Naga Shift  Transformations spread through an entire town—but why? Added Aug 2013 12 parts 18,537 words 14,221 views 4.8 stars (6 votes)
• The filling by UberPump  CockUp Pumping Cvore Balls HyCock HyCum Hallow  Jason has a knack for pumping his cock and balls up with air or water, reveling in the increased size before cumming it out of him. When he attends a Halloween costume party, his drunken behavior leads him to explore his personal limits at the pool. However, once he begins he can’t stop, only attracting the attention of the muscleheads around him. Added Oct 2020 4,045 words 6,041 views 4.8 stars (6 votes)
• The four jocks: Horny teens by hyperboi  CockUp Balls Cock HyCock NipCum XCock Btaur 4Legs XArms Rep MuscUp Musc Taller SizeUp Inc Bro Series   Added Apr 2014 3 parts 7,484 words 28,509 views 4.8 stars (6 votes)
• Friends indeed by FanTCMan  MuscUp Musc   Added Jul 2002 4,791 words 14,010 views 4.8 stars (6 votes)
• Hall of mirrors by John  CockUp Cock HyCock MuscUp Musc  Funhouse mirrors in a run-down carnival unexpectedly rebuild Bob’s body into a 500-pound, densely packed muscle fantasy. This seems like a godsend for his now-routine fifteen-year relationship—if only he can lure Dan into the Hall of Mirrors too. Added Jun 2017 2 parts 12,475 words 10,084 views 4.8 stars (6 votes)
• The hydrean dagger by Dakon  XDig XCock XHead XArms XLeg XLimb XPec XTongue  Jake finds a special knife that triples what it cuts off, and his boyfriend Todd becomes excited by the possibilities. Added Jun 2005 2,573 words 9,054 views 4.8 stars (6 votes)
• Jake: hand-drawn giant by spacevlad  Gut Musc SizeUp Infect  Drawing massive, muscle-hunk football stars seems like a safe enough hobby—but what if your drawing takes on a life of its own? Added Sep 2009 7 parts 11,792 words 27,241 views 4.8 stars (6 votes)
• Josh’s genie by Anarchy A  Cock MuscUp Musc SizeUp Genie  Bullied teen swimmer Josh uses the unexpected acquisition of a genie to try improving things at school, one daily wish at a time. Added Oct 2015 Updated Jan 2016 4 parts 8,133 words 38,864 views 4.8 stars (6 votes)
• Just take one by LoverBoy  CockUp Cock MuscUp Musc SizeUp  Andy is a brilliant, young academic who wishes to make his physical appearance match his intellectual acumen. But when he uses an “experimental” supplement from a dubious source, he may get more than he bargains for! Added Jan 2018 3,227 words 11,791 views 4.8 stars (6 votes)
• Next level love: Location enabled by Eclipse  CockUp Cock Mental MuscUp App Series  Mateo’s been feeling small lately, but his new app is all he needs for a boost. Added Sep 2020 6,731 words 3,452 views 4.8 stars (6 votes)
• Nightmare at the Pump House Gym by UberPump  CockUp Balls Cock HyCock HyCum HyMusc Immob MuscUp Musc Hallow  A bodybuilder encounters a strange man at the local gym who forces him to experience his deepest desires first-hand. The growth is intoxicating, but there’s a price to pay he doesn’t see coming. Added Oct 2020 3 parts 9,485 words 7,361 views 4.8 stars (6 votes)
• Professor Magnus’s transformation class by BRK  CockUp Cock XCock XArms XLeg XLimb 3Legs MuscUp Musc Taller SizeUp Series  The hot students in Professor Magnus's transformation class know that working with him will be life-changing—not to mention body-changing. Added Dec 2010 Updated Jun 2018 2 parts 7,180 words 19,865 views 4.8 stars (6 votes)
• Sharing cocks by CockTFBoi  CockUp CockDn NoCock Det Merg  Cameron, Dakota, and Zack head out for a sex-filled weekend at a remote cabin. Once there, things take a bit of a turn for the weird as the trio experience some unexpected transformations. Added Aug 2020 Updated Oct 2020 5 parts 12,968 words 5,245 views 4.8 stars (6 votes)
• Still bros, right? by Cockatrice  Tf 2Inan Nonc  Andy’s roommate wakes up to quite a surprise when he finds himself changed one day. Andy meanwhile wastes no time trying out his dick’s new best friend. Added Sep 2020 1,603 words 3,371 views 4.8 stars (6 votes)
• You and I: At the Bar by Also Known As  AlwHard CockUp Cock HyCock MuscUp Musc Sugg Series  I don’t always wish to cause a commotion. Sometimes it’s more fun—more…satisfying—to make my changes without anyone even noticing my presence. Added Jun 2017 5,359 words 11,230 views 4.8 stars (6 votes)
• The Black Knights: Coming home by Meddler Incs  CockUp Cock MuscUp Musc SizeUp Nonc Alien Symb Series  When an ex-football player, now a local newspaper reporter, investigates The Black Knights, he gets more than he bargained for. Added Oct 2018 Updated Dec 2019 14 parts 23,531 words 15,675 views 4.8 stars (11 votes)
• HUSH by The Gecko Rose  CockUp HyCock Self XBalls Str Det Tf HyTongue Merg Goo  A young man, an Acolyte of cHurch of Universal Scientific Hedonism (HUSH), finally becomes a full Brother, and learns all the secrets of the Brotherhood. Including all their special transforming abilities... Added Dec 2018 4 parts 9,806 words 6,066 views 4.8 stars (11 votes)
• The life changing discovery by MuscleAndBulge  CockUp Cock HyCock MuscUp Musc SizeUp Genie  Stew is a short and scrawny teenager. But after he discovers a magical artifact, his life becomes bigger and better. Added Jul 2019 Updated Jun 2021 2 parts 6,218 words 10,295 views 4.8 stars (11 votes)
• Little plant of horrors by PiggiestJ  HyCum Tf Plants Nonc Supn Hallow  Morris’s life was rather dull until he came across a small plant to take care of. Little did he know the shenanigans the little thing would bring. Added Sep 2020 Updated Oct 2020 2 parts 5,330 words 4,041 views 4.8 stars (11 votes)
• New normal by brazboy  CockUp Cockfuck Cock HyCock HyCum NipCum MusBr MuscUp Taller PSD SizeUp Infect Pandem  Pedro is a Brazilian university student who returned to live with his roommates after one and a half years living with his family during the pandemics, but everything is not the same. His roommates Carlos and Henrique will not tell him what exactly has changed, wanting him to see it with his own two eyes. Added Jun 2021 5,662 words 4,712 views 4.8 stars (11 votes)
• Seth’s life changing adventure by Navy Alpha Pup  CockUp CockDn Balls Cock 2Gay MuscUp Musc Scent DeeperVoice Viol Dom Hum Slave Fluids Alcohol  Seth has settled into his post-corps life, or thinks he has—until he meets a fellow ex-Marine who offers him everything he didn’t know he wanted. Added May 2019 Updated Jul 2021 8 parts 30,810 words 13,515 views 4.8 stars (11 votes)
• You and I by BRK  AlwHard CockUp Cock NipC NipCum XAbs XCock XHead XArms XLimb XPec XTorso Rep Stack MuscUp Musc Handsomer TongueGr Mcock Infect Merg  When two lovers with the power to transform each other reunite after a separation, the results can be explosive. Added Oct 2011 Updated Feb 2019 4 parts 11,942 words 36,196 views 4.8 stars (11 votes)
• The blue smoothie by BRK  CockUp Balls Mental HyStr MuscUp Musc Sugg Super Fly Series  Yuri, a personal trainer, is already having a rushed and stressful day when he meets his first client, a young nurse who looks like he’s never lifted so much as a paper clip. On top of that, the banana he grabbed from the stash at the gym’s juice bar to make his morning protein shake was blue for some reason. Added Jun 2020 3,238 words 8,070 views 4.8 stars (16 votes)
• Brotherly love by Seth Peterson  CockUp Balls Cock HyCock MuscUp Gut Musc Taller SizeUp Inc Bro Merg  Two brothers get the best weekend they can imagine through the use of some very special, very wonderful powers. Rest assured, the results are BIG. Added Dec 2015 7,666 words 36,419 views 4.8 stars (16 votes)
• Doubling up by BRK  AlwHard XAbs XCock XHead XArms XLimb XPec XTorso Stack Inc Twins Merg M/M M/M/M M/M/M/...  All the dorm rooms in Bryce’s building are being combined with another, and everyone’s doubling up. What isn’t immediately apparent is that it isn’t the rooms that are being merged—it’s the roommates. Added Jun 2013 Updated May 2015 3 parts 7,007 words 22,589 views 4.8 stars (16 votes)
• The magic jockstrap by Ziel  CockUp Cock  Something short and simple this time around: A guy tries on a special jockstrap with interesting results. Added Jul 2016 1,385 words 13,548 views 4.8 stars (16 votes)
• Metaboi by BRK  AlwHard Cock HyCum XAbs XCock XHead XArms XLimb XPec XTongue Rep Stack MuscUp Taller PSD Retcon Swap Merg Tksg Series  There’s a special clothing store that caters especially to the meta boi. If you’re their kind of customer you already know it—or you’ll soon find out. Added Jun 2010 Updated Nov 2017 8 parts 31,338 words 56,067 views 4.8 stars (16 votes)
• The need to obey by Musiker  CockDn Balls Cock XArms XLimb MFSwap Mental 2Gay Musc BellyUp Taller Giant PSD SizeDn SizeUp Hairier Sugg Bi Het Cage Dom Slave Immort  An enormously large, muscular man has only one thing he wants out of life: to be a good boy for his master. He is searching for a new master to take him in when he finds someone who is willing to give him a try-out, and who is not turned off by his enormous balls and knee-length caged cock. Added May 2019 Updated Nov 2019 8 parts 44,462 words 19,154 views 4.8 stars (16 votes)
• The pills by LordTronimator  AlwHard CockUp Balls Cock HyCock HyCum  An 18-year-old college student, Thomas, orders some pills online that promise to help him with his small problem. When they don't work fast enough for him, he decides to down the whole bottle—and gets more than he bargained for. Added Apr 2020 Updated May 2020 12 parts 16,260 words 14,593 views 4.8 stars (16 votes)
• Be careful what you wish for by Tereshky  CockUp Balls Cock 2Gay Immob MuscUp Musc AgeDn Nonc  “I can give you anything you wish for. Just don’t blame me if you weren’t specific enough.” A mystical man shows up to people in despair to offer the desires of their hearts, but he has a tendency to give them more than they wanted. So if a man in a gray suit comes up to you offering to give you anything you want, be careful what you wish for. Added Feb 2020 Updated Jun 2021 9 parts 42,479 words 38,262 views 4.8 stars (15 votes)
• The djinn by hyperboi  CockUp Cock HyCock MuscUp Musc Inc Bro Twins Genie   Added Dec 2012 8 parts 14,201 words 32,290 views 4.8 stars (15 votes)
• Freshman dreams by BRK  Cock XAbs XHead XArms XLimb Rep Wings MuscUp Musc SizeUp Fly t/t t/t/t  Even when he’s home sick, Stefan’s ability to dream up new transformations on his schoolmates is a big pain. Make that, especially when he’s home sick. Added Mar 2009 4 parts 3,089 words 40,483 views 4.8 stars (15 votes)
• Insta-hotties by BRK  Cock XHead Musc  An admirer gives webcam muscle hunk Tim a magical sponsoring gift of more of what his fans love most about him—which turns out to be his gorgeous face. Added Jul 2014 2,176 words 11,881 views 4.8 stars (15 votes)
• The construction worker by Peterbilt  CockUp Cock Musc AgeDiff Virgin Inc Dad  A troubled young hardhat named Jordan is helped through a series of self-discoveries by Joe, a father-figure who comes to mean more and more to Jordan. Added Sep 2015 22,148 words 21,101 views 4.8 stars (10 votes)
• The cyclist by Corwin  CockUp Cock MuscUp Musc  That jogger Scott started noticing on his bike runs has been getting hotter and more muscled. After getting to know each another on the trail Mark decides to share his secret. Added Dec 2013 11 parts 29,802 words 23,317 views 4.8 stars (10 votes)
• The four jocks by BRK  CockUp Cock XLimb Rep MuscUp Musc Tf Series M/M M/M/M/...  A game than asks really peculiar questions leads a group of four young jocks through a series of progressively more exciting transformations. Added Sep 2009 4,470 words 27,887 views 4.8 stars (10 votes)
• High quality replacement parts (free with trade‑in) by Keyed  CockUp MuscUp Musc Tf Swap  Have you always wanted, say, a smaller nose? Somewhere, if you're lucky, in some other world, there might be a version of you who has one, or who has gotten a nose-job. If so, a swapper can help you out. Watch one help an unlucky man in a big way. Added Jan 2018 3,669 words 7,383 views 4.8 stars (10 votes)
• Banned clones by Josh Dugan  Rep  How might a man and his clone get to really know each other? Added Mar 1997 1,283 words 8,731 views 4.8 stars (5 votes)
• The cam show by LordTronimator  CockUp Balls Cock HyCock HyCum SocMed Fur  A furry streamer decides to host a very special show as he decides to showcase a lotion that he found, that promises to increase the size of one’s penis. Things start out well enough before taking a very messy turn. Added May 2020 2,552 words 4,132 views 4.8 stars (5 votes)
• Costumed by Tym Greene  Tf 2Animal Merg Cent  Two buddies get one of those two-man costumes for a party, and find themselves growing…closer. Added Mar 2021 4,977 words 2,000 views 4.8 stars (5 votes)
• Destructive boys: Dennis’s Christmas present by MarcusB00  CockUp Cock HyCock HyCum MuscUp Musc Worship Viol Xmas Series  Christmas has come around, and Mason has plans for his #1 fan to make his Christmas even better. Added Dec 2020 3 parts 3,523 words 2,857 views 4.8 stars (5 votes)
• The franchise by BRK  Cock XCock Btaur 4Legs XArms XLeg XLimb M/M  It turns out there’s a secret direct-sales network of individually owned franchises for the sale of extra arms, legs, and the like. And the franchise in Branigan County, SD is for sale, to the right kind of buyer. Added Sep 2012 3,858 words 8,750 views 4.8 stars (5 votes)
• I, Bro-bot by Cris Kane  AlwHard 2Gay Dom Mind  A formerly homophobic preppie describes how he came under the control of his computer geek roommate. Added Mar 2019 3,877 words 6,203 views 4.8 stars (5 votes)
• The lamp by Neltharion5  CockUp Balls Cock MuscUp Musc Genie  An archaeologist, an oil lamp (with requisite genie), and three wishes. Added Apr 2003 6,399 words 19,657 views 4.8 stars (5 votes)
• Lather, rinse, repeat by Cris Kane  Mental 2Gay MuscDn Musc SizeDn HairDecr  Jack accidentally grabs his missing roommate's Twink-brand shampoo in the shower and feels like a new man. Added Sep 2020 Updated Oct 2020 2 parts 9,938 words 5,145 views 4.8 stars (5 votes)
• The machine by Silvio Censall  MuscUp Musc   Added Jul 2002 3 parts 5,098 words 11,621 views 4.8 stars (5 votes)
• Many Man, the self-twin by S.E.  Rep Twins  Hello! Welcome to my blog! Many Man Blog is a blog where I share the happenings of myself and my boyfriend, who has a rare, almost magical, medical condition. Added May 2020 1,767 words 1,584 views 4.8 stars (5 votes)
• Muscle bots by Meddler Incs  Musc Andr Future  Have a problem with your device? The Department of Cybernetic Deviations is here to help! Added Jan 2018 2 parts 1,955 words 6,225 views 4.8 stars (5 votes)
• Muscle spring break by Giun  2Gay Musc  A bunch of straight college guys plan an exciting spring break in Cancun. When their bodies start to change, so do their feelings for each other. Added Apr 2003 4,087 words 8,175 views 4.8 stars (5 votes)
• My brother was a teenage muscle freak! by Pump Culture  MuscUp Musc Inc Bro  This is a story of how my muscle fetish first got started and how my brother turned himself into a true muscle freak. Added Nov 2020 3,084 words 5,015 views 4.8 stars (5 votes)
• The new cook by Tym Greene  XHead Tf SizeUp 2Animal Merg Fur Supn  A potions student decides to use his part time job to test out some of his homework. Hilarity ensues. Added Feb 2021 6,529 words 1,343 views 4.8 stars (5 votes)
• The recruit by Cris Kane  CockUp MuscUp Musc  A twink hooks up with a Marine and begs to know if the rumors about a secret military muscle-building formula are true. Added Nov 2018 3,279 words 7,171 views 4.8 stars (5 votes)
• Subject 91 by Tict  MuscUp Musc Nonc   Added Feb 2014 2 parts 2,602 words 16,146 views 4.8 stars (5 votes)
• Superhero license by Neltharion5  CockUp Cock MuscUp Gut Musc SizeDn SizeUp Dom Nonc Super  Gunner, a powerful superhero, is brought down by a delinquent hero license renewal. He has to be a sidekick for three randy heroes in order to regain his superhero status. Added Nov 2017 5,101 words 8,800 views 4.8 stars (5 votes)
• This is Sean by Cockatrice  2Cock Tf Cocktaur  Michael is nervous because he is bringing his boyfriend Sean to his parents’ place for the first time. Even more, Sean is a werecock and does not understand why that has to be kept a secret from Michael’s parents... Added Mar 2020 5,480 words 2,337 views 4.8 stars (5 votes)
• Three-legged bros by BRK  XAbs XCock XLeg XLimb 3Legs Inc Bro  Matteo’s stream-of-consciousness account of how, basically, the only thing hotter than having three legs is having an insanely hot brother with three legs. Added May 2020 3,562 words 2,212 views 4.8 stars (5 votes)
• Trick of memory by James Fourlegs  XCock XArms XLeg XLimb Rep  Ed's forgetfulness leads to a lot of extra pleasure. Added May 2002 781 words 6,130 views 4.8 stars (5 votes)
• You dreamer by Josh Dugan  4Legs Llegs XLeg XLimb WFoot  Dream, and it might come true. Added Sep 2004 4 parts 6,986 words 6,955 views 4.8 stars (5 votes)
• Summer research by spacevlad  CockUp Balls Cock HyCock Dumber Mental 2Gay HyMusc HyStr MuscUp Gut Musc Scent BellyUp Taller Giant PSD SizeUp Hairier Viol Slave 4th of Jul  Dave, an ambitious researcher at a well-known university, hires an eager-to-grow football player to test an experimental growth supplement. The experimental growth supplement works much better than anticipated and Grunt gains over 50 pounds in just a week, though with some troubling side-effects. Added Oct 2017 Updated Dec 2017 12 parts 28,541 words 31,771 views 4.8 stars (24 votes)
• The Champion by Mikeytron  HyMusc MuscUp Musc  A twist on the “be careful what you wish for” formula, regarding the history of an implausibly huge Mr. Olympia champion. Added May 2021 2 parts 10,261 words 5,896 views 4.8 stars (14 votes)
• Daddy’s boy by Seth Peterson  CockUp Cock NipCum Dumber 2Gay MusBr MuscUp Musc Hairier Dom Hum  What happens when a cocky, overly narcissistic businessman oversteps courtesy? Why, muscle-growing, mind-altering, submission-inducing karma, of course! Added Jun 2018 2,534 words 22,385 views 4.8 stars (14 votes)
• Extremes by BRK  AlwHard HyCum NipCum XDig XAbs XCock XHead Llegs XArms XLeg XLimb XPec Stack Det M/M  Imagining yourself as being hotter, more hung, and possessed of extras sometimes is just a phase, but other times it can spiral to extremes. Added Feb 2012 Updated Oct 2018 2 parts 10,844 words 22,156 views 4.8 stars (14 votes)
• Magic eye by RdyRoger  CockUp CockDn Balls Cock HyCock MuscUp Musc Taller SizeDn SizeUp Lycra  Once he found out the secret of magic growing things suddenly seemed really easy for Al, until the day he was startled by Turner while he was staring deep into his hot friend, Tony. Added Aug 2019 Updated Sep 2019 7 parts 20,700 words 13,434 views 4.8 stars (14 votes)
• No reason by Alakazam1988  Cock NipC NipCum MusBr MuscUp Gut Musc SizeUp Xmas  At the gym, Pascal notices that not only is are his pecs getting huge, but his nips are showing under his hoodie more than they should. Added Jan 2017 3,736 words 27,007 views 4.8 stars (14 votes)
• Worshipping Allan by BeefFan  Cock MuscUp Musc  Allan found out that worship makes him grow—so he’s sought out his biggest fan. Added May 2014 5,648 words 32,532 views 4.8 stars (14 votes)
• Walker by BRK  CockUp Cock XCock XArms XLimb MuscUp Musc NoShirts  When you have a student who’s cursed with being irresistibly sexy and literally can’t wear shirts (because they evaporate off of him), you should probably just ignore him. Assuming that’s possible. Which? It isn’t. Added Nov 2013 2,831 words 12,707 views 4.8 stars (18 votes)
• The CVN link by BRK  CockUp Cock XAbs MuscUp Musc Taller SizeUp App Retcon  Mike is applying for a new job. Everything’s going great, his potential new boss is a dreamboat, he’s perfect for the position. There’s just one hitch: they need his CVNs. His confusion turns to shock when he finds out from a friend just what the “N” stands for… Added Jun 2020 2 parts 9,839 words 6,207 views 4.8 stars (9 votes)
• Cycle one by Absman420  Cock Musc Lycra  Sam is a writer whose hobby is bodybuilding. His new gym is owned by a guy named Coach, who goes the extra mile to make sure “his boys” get the gains they need. Added Jan 2013 8 parts 8,889 words 21,050 views 4.8 stars (9 votes)
• Daddy’s little boy by TonnyGiant  Cock Gut Musc PSD AgeDiff Inc Dad Dom  Jimmie returns home from college for the summer to rediscover just how drawn he is to his massive, muscle bear stepfather. Added Sep 2018 Updated May 2019 2 parts 4,961 words 19,922 views 4.8 stars (9 votes)
• The hike by JayPat  MuscUp Musc SizeUp  When a bunch of teens go out into the woods by the lake for a long hiking trip, it becomes a growth experience for them (and not in the figurative sense). Added Sep 2012 6 parts 19,182 words 18,695 views 4.8 stars (9 votes)
• Joey’s genie by RdyRoger  CockUp Cock MuscUp Musc PointyEars Genie  Now that he has a genie at his command, Joey is going to go enjoy the world, decides to give his friend Rob a few gifts before he leaves. Added Feb 2009 Updated Apr 2012 5,218 words 38,179 views 4.8 stars (9 votes)
• The madagascar charm by Reuben  CockUp Cock MuscUp Musc SizeDn   Added Dec 2002 5 parts 10,797 words 18,118 views 4.8 stars (9 votes)
• Search and rescue by BRK  XAbs XArms XLimb XPec Stack Tf Scaly Naga  Roger treks deep into the rainforest to find his lost fiancé, Luke, unaware that Luke no longer needs to be rescued. Added Apr 2021 3,552 words 1,355 views 4.8 stars (9 votes)
• Metatation by BRK  XCock XArms XLeg XLimb Rep Taller Weed  Unexpectedly given the afternoon off, Connor goes exploring a botanical garden on a whim and discovers a secret meditation circle sharing some unusually potent weed. Added Dec 2018 Updated Apr 2019 2 parts 9,998 words 5,669 views 4.8 stars (22 votes)
• Field agent by BRK  CockUp Cock HyCock HyCum XCock Btaur 4Legs XArms XLeg XLimb Rep MuscUp Nude SizeUp Inc Twins Infect Cent  Special agents Adkins and Barber interview a rancher in relation to their current case. There’s something odd about the handsome Latino, though—starting with the fact that he won’t get down off his horse. Added Apr 2020 Updated Nov 2020 2 parts 5,236 words 5,641 views 4.8 stars (13 votes)
• Hard to hide by BRK  CockUp Cock HyCock MuscUp Musc Grad Taller SizeDn SizeUp Merg Share M/M  Jooyong is working his uncle’s demolition site when he encounters a man in need of protection, but it’s more complicated than your average plea for help. For one thing, the man who needs help is not an ordinary man. And the kind of help he needs is something Jooyong isn’t even a little prepared for. Added Jun 2017 Updated Jul 2019 7 parts 20,225 words 17,906 views 4.8 stars (13 votes)
• Raiders basketball by VanderAnder  CockUp Cock Self Bi Het  Trying out for the school basketball team involves more than being really good at basketball. Added Apr 2013 24 parts 27,394 words 27,606 views 4.8 stars (13 votes)
• Joined by BRK  CockUp Cock XDig XCock XHead XTongue XTorso Rep MuscUp Musc Taller SizeUp Nonc Merg  Dylan wakes up kissing an incredibly beautiful man he’s never met before, and finds that he’s more connected to this man than any lover he’s ever had. Added Sep 2017 Updated Feb 2021 5 parts 22,816 words 11,895 views 4.8 stars (17 votes)
• Coffee coffee by NBCK99  AlwHard CockUp Cock 2Gay MuscUp Musc SizeUp  The employees at the campus’s hottest coffee shop seem to be getting sexier… and so are the customers. Added Dec 2010 2 parts 5,251 words 29,416 views 4.8 stars (21 votes)
• Visiting home by Wicked  Cock MuscUp Musc SizeUp AgeDiff Inc Dad Infect  Asher spent his entire first semester working out and gaining some serious muscle, but when he returns home for winter break, he doesn’t realize that he’ll be the one amazed by how much someone can change. Added Jan 2016 Updated May 2016 2 parts 6,753 words 31,228 views 4.8 stars (21 votes)
• The Benefactor by Proteus  AlwHard CockUp Balls Cock Immob MuscUp Gut Musc Taller PSD SizeUp Nonc Supn  The Benefactor bestows favor on those he deems worthy, whether they like it or not. Added Jan 2020 Updated Apr 2021 14 parts 15,351 words 23,873 views 4.8 stars (16 votes)
• A Christmas wish by Buck Reams  CockUp Balls Cock NipC HyCum NipCum MuscUp Musc Tf SizeUp Hairier Nonc Infect Xmas  Writing out your fantasies can have practical consequences, if you do it on a scrap of paper you forgot came from a magical tome. Added Dec 2019 1,975 words 10,624 views 4.8 stars (16 votes)
• Cock medication by Jocktaur Kyle  CockUp Cock HyCock Self   Added Jun 2006 2,097 words 40,315 views 4.8 stars (12 votes)
• Custom tailoring by BRK  MuscUp Musc SizeUp M/M  Danny takes on a modeling gig that involves a little custom tailoring, and not just of the clothes he’ll be wearing for the shoot. Added Sep 2016 2 parts 6,680 words 14,260 views 4.8 stars (12 votes)
• Drug test by Also Known As  CockUp Cock MuscUp Musc SizeUp   Added May 2011 8 parts 16,269 words 44,706 views 4.8 stars (12 votes)
• The perils of fair trade by Dream Big  CockUp Cock HyCock SizeDn Series  It seemed like a good deal: a little height for a little more cock, especially if you have too much of one and not enough of the other. But even a fair trade can go wrong if you’re not careful. Added Jun 2019 2,976 words 5,485 views 4.8 stars (12 votes)
• Thoros by Ziel  CockUp Cock HyCock HyCum MuscUp Musc BellyUp Tent Images  In the mystic ruins of a secret, forbidden library, Thoros uncovers an exciting find—a small jade box, sealed with a binding rune Thoros knows he can unlock. The rewards inside, however, are not what he expects, and the tendrils unleashed will not stop until Thoros has been given more pleasure than he can handle. Added Jan 2018 4,756 words 23,258 views 4.8 stars (12 votes)
• Alpha Mike finds a beta by Eric Aaldersen  Balls Cock HyCum 2Gay Musc HyPher Supn Series  Inspired by Luke’s recent conquests, older brother Mike goes on the hunt to find a beta of his own to breed into alphahood and gets more than he bargained for. Added Jun 2020 7,244 words 4,015 views 4.8 stars (8 votes)
• Bet you can’t have just one by Ziel  CockUp Balls Cock HyCock MuscUp Musc Giant SizeUp  Vincent was given pretty clear instructions with the new growth supplement his pal invented: “Only take one pill.” Added May 2017 5,605 words 26,188 views 4.8 stars (8 votes)
• A fine bromance by Richard Jasper  CockUp Cock 2Gay MuscUp Musc Hairier  Once Roger finds a young straight boy lifting buddy, the growth (muscles and cock) really takes off—for both of them! Added Jan 2020 3 parts 6,603 words 7,022 views 4.8 stars (8 votes)
• Getting your goat on by Meddler Incs  Musc Absorb Fur  That costume feels really good when you put it on, and the orgasms are mind-blowing. It might be a little ... possessed, though? Added Jul 2016 2,502 words 11,167 views 4.8 stars (8 votes)
• Guycanthropy by Ziel  CockUp Cock HyCock MuscUp Musc Taller Giant PSD SizeUp Hallow  Jaimie was planning on spending Halloween at home gaming it up, but a text from his pal prompts him to go check up on their mutual friend. What Jaimie finds surpassed his largest and wildest dreams. Added Nov 2019 5,804 words 10,915 views 4.8 stars (8 votes)
• Hot as fire by Double-U  CockUp MuscUp Musc  Jackson is fed up with his volunteer firefighter dad spending so much time at the firehouse, seeing as how there were never any fires in Pinefield. Finally he psychs himself up to go down there and see for himself what’s really going on. Added Oct 2017 5,154 words 8,168 views 4.8 stars (8 votes)
• Jacob of the mists by Dace  Cock Wings HyPher Scaly Fant  Long after the mists fell, the Night Guard, warped by its influence, watches over the tiny remnants of humanity left in Citadel. When Jacob undergoes changes he doesn’t understand, there’s only one person he can trust: Lyle, the Night Guard who rescued him from the mists one night. Added Jun 2021 6,306 words 858 views 4.8 stars (8 votes)
• The lucky accident by Alakazam1988  CockUp Balls Cock HyCock HyCum HyMusc MuscUp Musc Giant SizeUp Hairier  An accident at the skate park leads to a treatment for Luke’s balls that not only heals them but starts them growing, and pretty soon it’s not just his balls that are bigger. Added Sep 2019 7,269 words 22,343 views 4.8 stars (8 votes)
• A miracle on 69th Street by Ziel  CockUp Cock HyCock Xmas Series  Christmas just doesn’t feel like Christmas this year for Nick, but a midnight visitor changes that. Santa Claus might not be coming this year, but Nick and his new friend sure are. Added Jan 2016 8,172 words 11,256 views 4.8 stars (8 votes)
• Morphling by Apollo's Meat  CockUp HyCock HyCum MuscUp Musc Tf  A freshman college student takes home hot, freaky Seth, and later puzzles over what Seth called him: "morphling". Added Feb 2014 Updated Mar 2014 2 parts 3,693 words 22,387 views 4.8 stars (8 votes)
• Read aloud by BRK  CockUp Balls Cock XDig XAbs XCock XArms XLeg XLimb 3Legs XPec Stack MuscUp Musc Taller Series  Timothy decides to use his favorite website’s new read aloud feature so he can concentrate on his jerkoff session and really get into the story. Instead, the story gets into him. Added May 2020 3,068 words 2,930 views 4.8 stars (8 votes)
• 21 dollar footlong by Ziel  CockUp Balls Cock HyCock App SocMed  Angus receives a new app from his buddy which claims to allow him to host his very own growth drive! Angus could use the money, and it’s not like the app can really grow his cock. It’s just trick photography and photo manipulation, right? Added Oct 2019 8,683 words 13,909 views 4.8 stars (8 votes)
• You and I: The beginning by Also Known As  CockUp Cock MuscUp Musc Nude PSD SizeUp Sugg Series  In the beginning, there was growth, and muscle, and … well, there was a little trial and error along the way. Added Aug 2016 9,251 words 12,320 views 4.8 stars (8 votes)
• The minotaur equation by LeatherGryphon  CockUp Cock MuscUp Musc 2Animal Infect Fur Series  After Dale rewrites his DNA to become a hugely muscled, hugely hung minotaur, he discovers he hadn’t thought through his transformation. Added Jul 2014 7 parts 16,439 words 25,403 views 4.7 stars (23 votes)
• Misdirected by BRK  AlwHard CockUp Cock Self SizeUp Inc Bro  Ben doesn’t realize at first exactly why his annoying older brother’s secret rituals to make himself bigger and stronger are going wrong, only that he feels pretty strange himself lately. Added Oct 2009 6 parts 5,664 words 32,160 views 4.7 stars (19 votes)
• Crisis in Carraido by BRK  Cock XLimb Rep Det M/M M/M/M  When a strange institution comes to town in a remote valley community in the Rockies, the locals are put off by the newcomers’ aloofness. But when things go wrong in the strangers’ compound, rancher Kevin and his sheriff’s deputy best buddy Pauly find out just how weird things are up there. Added Apr 2016 Updated Dec 2016 4 parts 11,190 words 6,575 views 4.7 stars (15 votes)
• I think, therefore I am by LeatherGryphon  Cock MuscUp Musc TongueGr Series  Lance’s telepathic DNA-rewriting equipment opens up incredible new possibilities, but he and Dale need to test it patiently. Only, who could be that patient? Added Jul 2014 6 parts 12,242 words 15,219 views 4.7 stars (15 votes)
• Red pills by Alakazam1988  CockUp Cock HyCock Addict MuscUp Gut Musc Taller PSD SizeUp Hairier  A struggling college student and part-time stripper is introduced to Red Pills, which are supposed to be the one dick-growth pills that actually work. He’s skeptical—at first. (Chapters 1-7 revised as of summer 2019.) Added Jan 2017 Updated Mar 2021 19 parts 53,990 words 37,920 views 4.7 stars (15 votes)
• You and I: The hotel room by Also Known As  CockUp Cock MuscUp Musc SizeUp Sugg Series  In this tale of dual perspectives, when you seek out a man with godlike powers and a yearning to transform others (having already made himself the strongest and most beautiful man alive), you should expect your own agenda to be quickly forgotten. The only question is: will you become your fantasies—or his? Added Jul 2016 2 parts 10,766 words 12,785 views 4.7 stars (15 votes)
• Alpha Luke releases the beast by Eric Aaldersen  Cock HyCum HyStr Musc Virgin HyPher Supn Series  Luke thinks back to his first sexual encounter with a beta—in the back of a school bus! Added May 2020 4,905 words 3,930 views 4.7 stars (11 votes)
• David devolving by FanTCMan  Dumber MuscUp Musc Nonc   Added Sep 2003 2 parts 9,538 words 36,226 views 4.7 stars (11 votes)
• My growth journal by Kaelan  CockUp Cock Self MuscUp Musc Inc  It's my 30th birthday... and all of a sudden my body keeps changing. And it's awesome. Added Jul 2017 3,692 words 15,120 views 4.7 stars (11 votes)
• The orphanage by JayPat  Cock HyStr MuscUp Musc DeeperVoice SizeUp Viol  They told the orphans they were getting “vitamin shots”. What happened instead was a group of abandoned teens experiencing wild, sudden growth, one by one, and no one knew what would happen next. Added Sep 2012 12 parts 78,194 words 29,022 views 4.7 stars (11 votes)
• Wrap your arms around me by NBCK99  Cock XArms XLimb XPec Rep Stack  Bruce loves being touched so much that his lover’s hands just aren’t quite enough—until they meet a cocky stranger named Jackson. Added Oct 2014 3,961 words 8,830 views 4.7 stars (11 votes)
• Nu-you by Cris Kane  2Gay Musc Swap  A bored tech-conference attendee is given a demo of a life-changing new gizmo to try out. Added Aug 2014 4,176 words 14,113 views 4.7 stars (18 votes)
• The salt by RdyRoger  CockUp Cock MuscUp Musc Worship Libido Grad Taller SizeUp TongueGr Inc Bro Series  Trav gets his hands on some salts that cause all kinds of sexy growth and transformation. Using them on himself is great, but growing other people without their realizing it is even more fun. Added Jun 2010 9 parts 35,754 words 71,165 views 4.7 stars (18 votes)
• Ten ways to get big and strong by BRK  CockUp Cock MuscUp Musc SizeUp Inc Bro  Cam and his band-geek buddies have a good laugh at a silly new poster in the gym listing ten ways to get big and strong, but when they sneak in after school and start writing in their own suggestions, things start to get a little weird. Added Jun 2016 Updated Sep 2016 4 parts 13,105 words 21,788 views 4.7 stars (18 votes)
• Graham by Giant Worshipper  SizeUp   Added Nov 2009 Updated Dec 2010 10 parts 55,178 words 83,921 views 4.7 stars (21 votes)
• BodyReverence by BRK  Cock XCock MuscUp Musc App M/M M/M/M/...  Kevin finds out about an app that allows its subscribers to touch its handsome, muscular models with a new kind of virtual technology. His buddies are psyched to get in on the touching… but Kevin, who’s been getting more and more admiration for his looks and the body he’s sculpted for himself, realizes he wants to be appreciated with more than just yearning gazes and salacious comments. He wants to be touched. Added Sep 2017 4,670 words 6,797 views 4.7 stars (14 votes)
• BYBF: Build Your Boyfriend by eyematerror  Musc Cent  Desperate for love, Tim uses a magical new service to create his ideal boyfriend. In the process, however, he finds himself saddled with responsibility… Added May 2021 7,104 words 1,923 views 4.7 stars (7 votes)
• The fake boyfriend by BRK  CockUp Cock XDig MuscUp Musc Grad Taller PSD SizeUp HyTongue  Zeke must travel back to his hometown, Woody Hole, in a last-ditch effort to prove he’s gay and end the eternal matchmaking with his high-school girlfriend, Stacy. A fake boyfriend is the only way—but Zeke’s closest relationship is with a customized character from an open-sandbox simulation game, a cocky personal trainer named Troy. Added Aug 2020 4 parts 13,706 words 4,721 views 4.7 stars (7 votes)
• Genetics by joushy123  CockUp Balls Cock HyCock MuscUp Musc   Added Dec 2012 2,066 words 21,420 views 4.7 stars (7 votes)
• Growing together by YungFrancis  CockUp Cock HyCock HyMusc Immob MusBr MuscUp Musc PSD SizeUp  Sammy’s one of a whole group of massive muscle freaks who spend all their time working out and dealing with being huge. He’s already too big for doorways, his husband, Tommy, is even bigger, and they want to keep growing. Added Dec 2018 2 parts 6,563 words 11,870 views 4.7 stars (7 votes)
• New slave by MonsterMash62  CockUp Cock Musc Retcon Slave Mind  If you had a magic rock that granted wishes that came true retroactively, would anyone even believe you if you told them? Added Jan 2013 4 parts 3,251 words 21,993 views 4.7 stars (7 votes)
• OmniGro by Whatinsomnia  CockUp Cock HyCock NipCum MuscUp Musc AssUp SizeUp  Dissatisfied with the speed at which the current OTC dick growing serum works, Eli, a brilliant scientist in his own right, sets out to make his own super-powered serum. Eli wastes no time in breaking in the new concoction on himself and his boyfriend. The results speak for themselves and their new product revolutionizes the world as they know it. Added Mar 2016 3 parts 45,143 words 20,078 views 4.7 stars (7 votes)
• The orange jewel by Charley  CockUp Cock  Sometimes jewelry isn’t there just to look pretty. Added May 2014 2,220 words 10,997 views 4.7 stars (7 votes)
• The Reflex by Cris Kane  MuscUp Musc Grad AI  James receives an unexpected gift from an old friend: the trendy new home gym called the Reflex System. Added Mar 2020 Updated Apr 2020 5 parts 24,756 words 7,487 views 4.7 stars (7 votes)
• Stop staring at me by BRK  AlwHard CockUp Cock HyCum XDig XCock XPec MuscUp Musc Tf SizeUp  Those glasses with the funny settings on the side are a lot of fun and very addicting. Added Jul 2006 1,991 words 38,128 views 4.7 stars (7 votes)
• Switchers by Tommyhawk  Swap   Added Apr 2003 5,557 words 14,075 views 4.7 stars (7 votes)
• To wish for cock by CockTFBoi  CockUp CockDn CTheft NoCock Cock 2Gay Tf Cage Dom Pandem  A chance encounter while hiking starts a series of events that will change Calvin and the world around him forever. Added Dec 2020 Updated Feb 2021 5 parts 13,965 words 11,155 views 4.7 stars (7 votes)
• Waiting by TreborNawoc  Cock HyCock Prehen XFace XCock XArms XLimb XTongue  When your boyfriend has been held up in traffic, what’s a guy to do but have some fun… Added Jun 2021 Updated Jul 2021 2 parts 1,648 words 1,539 views 4.7 stars (7 votes)
• Workout buds by Wicked  MuscUp Musc  Alex finds a new workout buddy that really helps with his workout results. Added Feb 2017 3,126 words 8,466 views 4.7 stars (7 votes)
• The elevator ride by BRK  CockUp Cock Self XDig XCock XArms XLimb MuscUp Musc Handsomer Taller TongueGr Retcon Sugg Bi Pride X-Ray Dialog  Another long, boring elevator ride… and you’ve resisted messing with your coworkers for so long. Added Feb 2020 Updated Jun 2021 2 parts 3,731 words 7,757 views 4.7 stars (17 votes)
• Juggernaut by ghostwriter  CockUp Cock MuscUp Musc PSD SizeUp Het Viol  On a study abroad excavation, a black college student and former jock finds a mysterious red crystal belonging to the god Cytorak…what could happen? Added Jun 2018 Updated Jul 2018 4 parts 5,856 words 14,919 views 4.7 stars (17 votes)
• The power of suggestion: The coffee shop by NBCK99  CockUp Cock HyCock XCock XArms XLimb Taller SizeUp Mcock Sugg X-Ray Series  Having the power of suggestion leads you into a lot of temptation, but nothing compared to meeting Clay in line at the coffee shop. Added Aug 2016 3,055 words 12,217 views 4.7 stars (17 votes)
• Skeeter’s cleaners by Ziel  CockUp HyCock HyCum Giant SizeUp  Journalism majors and best buds, Trey and Davis decide to do an expose on the new cum cleaning business. Little did they know they’d be making the news themselves. Added Mar 2015 9,753 words 16,815 views 4.7 stars (17 votes)
• The escape by hyperboi  CockUp Cock HyCock Self 2Gay MuscUp Musc Inc Bro Twins Nonc Alien  Sam and his brother find themselves taken in their sleep and trapped in some strange warehouse-like space, along with all the other teens in their community. Not only is there no way out, but something is happening to them all... Added Dec 2014 3,492 words 20,469 views 4.7 stars (20 votes)
• Body game: Encounter 56 by matt1008  CockUp Balls Cock NipC XCock MuscUp Musc DeeperVoice SizeUp Mcock Series  In a prequel to BRK’s Body game, another set of six hot guys experience the dramatic and unexpected changes the Body Game can produce. Added Feb 2016 10,420 words 16,076 views 4.7 stars (10 votes)
• Burst by BRK  CockUp Cock XCock Rep Mental HyStr MuscUp Musc NoShirts Str Handsomer Tf Taller SizeUp Alien Xmas  In a sealed-off underground bunker, exposure to a tear in the fabric of space-time created by an illegal energy experiment is producing some interesting changes in the men trapped inside. And on top of everything else, it’s Christmas, and there’s no way they’ll ever see home again… Added Dec 2020 3 parts 11,494 words 5,302 views 4.7 stars (10 votes)
• Company guys by FanTCMan  CockUp Cock Mental 2Gay MuscUp Musc Libido Hairier AgeDiff Inc Dad  You can’t even imagine how excited Joey and I were, excited and scared, when Dad said he was going to give us the formula he’d been sampling. We were going to be models for what he called the Company. Added Dec 2002 2 parts 7,919 words 28,625 views 4.7 stars (10 votes)
• Muscle crush by BRK  AlwHard CockUp MuscUp Musc NoShirts  Nerdy Vince has a hopeless crush on his hunky coworker, Johnny, which only gets more painful when they have to room together on an extended business trip. Knowing Johnny only hangs with other hunks like himself, Vince unexpectedly finds a way to put on muscle and make Johnny notice him at last. Added Apr 2021 3,414 words 5,358 views 4.7 stars (10 votes)
• Sweat it out by Egi  CockUp Cock MuscUp Musc Scent Infect  Working out is hard enough when you're scrawny and shy. Sometimes you need a partner to help fill you out with some unconventional methods. Added Jun 2017 2 parts 8,184 words 11,894 views 4.7 stars (10 votes)
• Tubecock by BRK  CockUp Pumping Cock  Morty is amazed and thrilled to discover that his new job at the hardware store turns out to involve some special activities after hours—and it’s not iron they’re pumping. Added Jan 2021 2,102 words 3,264 views 4.7 stars (10 votes)
• Four-legged Ivan by Josh Dugan  CockUp Cock XCock LegWh 4Legs Llegs XArms XLeg XLimb 6Legs Rep WFoot MuscUp Det SizeUp Mcock Cent Xmas Alcohol Series Series  Let’s just say that four-legged Ivan is… multitalented. And he likes to share his experiences with his best friend (and himself). Added Jul 2016 Updated Oct 2018 12 parts 15,004 words 23,303 views 4.7 stars (23 votes)
• Say cheese and grow by hyperboi  CockUp Cock Self MuscUp Musc Grad Inc Bro  When Greg and his friends take a picture of themselves using a creepy camera, the resulting image shows them wildly transformed in different ways. They just think it’s a weird glitch, until it slowly starts becoming true. Added Nov 2013 13 parts 29,433 words 33,076 views 4.7 stars (23 votes)
• Carolina cock by Max Mann  CockUp Pumping Balls Cock HyCock  A paean to two of North Carolina's most famous sports stars. Added Nov 2003 2,779 words 28,139 views 4.7 stars (13 votes)
• Craterville by BRK  CockUp Cock XCock XLimb Rep Musc Tf SizeUp M/M M/M/M  When everyone in town has some kind of power that half the time they aren’t even aware of, the guy whose power is to tell with everyone else’s power is might feel like he’s got the short end of the stick. Sometimes, though, there are ways to make it work for you. Added Mar 2009 3,363 words 21,635 views 4.7 stars (13 votes)
• God mode by BRK  CockUp XDig XCock MuscUp PointyEars Taller App Retcon  Usually in video games, “god mode” is a way for programmers to test features and bug fixes without having to go the long way around. Sometimes, though, it’s exactly what it says on the tin. Added Apr 2021 2,269 words 3,952 views 4.7 stars (13 votes)
• Henry’s special talent by HardStallion  CockUp Cock Self  Henry has a magical ability to make things grow, and he suddenly realizes it would be a shame if his garden were the only thing benefitting from it. Added May 2014 3,383 words 14,866 views 4.7 stars (13 votes)
• Lockdown gym by BRK  AlwHard CockUp Cock Rep 2Gay MuscUp Musc Worship NoShirts Handsomer Grad Taller AgeDiff Inc Bro Twins Pandem  When Ed clears out his garage, his neighbor’s hunky college-age sons suggest converting the space to a lockdown gym for guys like them who want to maintain and can’t work out anywhere else. Despite the risk of distraction, Ed agrees, though the effect on his daily life turns out to be even greater than he expected. Added Apr 2021 3,110 words 5,231 views 4.7 stars (13 votes)
• Tyler and his new body by Daenotis  CockUp Cock Self MuscUp Musc Det Taller SizeUp  Tyler wanted to become one of the biggest muscle gym rats in the club and he took it a little too far with the magical protein powder from the sketchy jock influencer. Added May 2020 2,060 words 5,238 views 4.7 stars (13 votes)
• The clockwork dial by RdyRoger  CockUp Cock MuscUp Musc Libido Grad AgeDn Hairier  A man finds what looks like a beat-up old pocket watch, but when he gets it working again he finds its intricate dials and mechanisms are actually designed to make other guys incrementally—like his roommate Gabe, for example. Added Apr 2012 3,603 words 20,189 views 4.7 stars (16 votes)
• Happy little accidents by MainAttraction  CockUp CockDn Balls Cock Self Tf  Nils gets a special gift from a new friend in French class, but it take him a while to discover just what it can do. Added Dec 2020 Updated Jan 2021 2 parts 4,915 words 4,799 views 4.7 stars (16 votes)
• The new simulation game by hyperboi  CockUp Cockfuck Cock HyCock 2Gay MuscUp Musc Inc Bro  On a weekend home from college, while he’s waiting for his brother to come home (and avoiding his hateful dad and sneering stepmom), muscle nerd Simon screws around with a new sim game he’d lucked into beta-testing—a game that turns out to be a lot more realistic than he’d expected. Added Mar 2016 5 parts 10,449 words 19,743 views 4.7 stars (16 votes)
• The bet by JayPat  MuscUp Musc SizeUp  A simple operation can turn you into a hunk as hot as the football players you dream about. Do you even ask what the downside is? Added Oct 2012 4 parts 31,784 words 32,555 views 4.7 stars (19 votes)
• Changes in Bigby Heights by NBCK99  AlwHard CockUp Cock XCock Btaur 4Legs XArms XLimb Retcon Infect  Alex Stevens has always been shy, being the only boytaur in Bigby Heights, but Jesse helps bring him out of his shell. But after their first encounter, reality seems to shift. Added Jun 2010 Updated Sep 2010 3 parts 5,173 words 21,032 views 4.7 stars (19 votes)
• The engineer by Galpha567  NipC NipCum XCock Mcock Bond  A captive in a hidden lab is made to experience wonderful augmentations to his body by a phallically-obsessed engineer. Added Jan 2013 Updated Dec 2013 2 parts 7,147 words 23,069 views 4.7 stars (24 votes)
• Charlie by NBCK99  CockUp Cock HyCock 2Gay  Like everyone else in the dorm, Jude has gotten used to Charlie, the guy down the hall, and the way Charlie’s cock grows in his sleep—not to mention the effect it has on the everyone around him. But when he wakes up to find that Charlie’s cock has gotten not only out of hand but out of room, Jude confronts Charlie, with unexpected results. Added Nov 2014 3,891 words 16,879 views 4.7 stars (21 votes)
• Plus one by Double-U  MuscUp Musc Tf SizeUp StPat  I thought getting a new suite mate would be nothing but bad news. But that was before I learned he was a hot, muscular stud. Added Aug 2016 6,632 words 14,083 views 4.7 stars (21 votes)
• Growing boys at UMich by iciss  CockUp Cock MuscUp Musc  Those football jocks in the UMIch gym are about to get a whole lot hotter. Added Jan 2007 4 parts 7,144 words 32,927 views 4.7 stars (18 votes)
• Shadow and flame by BRK  CockUp Cock Genie Supn Ancient Earth 20th  As a jinn, I am used to being in control, master not only of all the elemental powers of the earth but of my own fate as well. And I was—until the night I was tricked and ensnared by an ambitious young nobleman too beautiful for even me to resist. Added Apr 2018 Updated Feb 2020 7 parts 24,360 words 11,689 views 4.7 stars (18 votes)
• Breaking big by Ziel  CockUp Cockfuck Balls HyCock HyCum Immob  Tim had the bright idea to craft a special serum that would boost the size of his painfully average dick in order to show off and hopefully woo one or both of his crushes, and it worked! Oh boy, did it work, but things take a turn for the extreme when Tim’s growth reaches extremes he’d never dreamed of, and then there’s the issue of Tim’s two crushes... Added Jan 2016 7,492 words 18,993 views 4.7 stars (15 votes)
• Jim’s shot by FanTCMan  CockUp Cock MuscUp Musc Hairier Nonc Dialog  Jim isn’t sure he wants to get any bigger—he’s already so muscled and so hung he attracts too much attention. But his doctor knows best. And once the shot’s in him, Jim knows being strong and hung is the only way to be. Added Dec 2002 2 parts 3,437 words 30,223 views 4.7 stars (15 votes)
• Little bro by Ziel  CockUp Cock HyCock MuscUp Musc Giant SizeUp Inc Bro  Hunky big bro Liam has always teased his puny kid brother Connell. But after his accident, Connell got some experimental treatments that are guaranteed to change who calls who the “little bro” from now on. Added Apr 2017 5,382 words 33,062 views 4.7 stars (15 votes)
• Altered by Dream Big  CockUp Cock MuscUp Musc Taller SizeUp 2Animal Hairier Nonc Bond HyPher  Chris wakes up in a strange laboratory, only to learn he’s one of a number of subjects in a mysterious program that involves alterations to the male human body. At least the guy they have looking after him seems sympathetic… and very, very sexy. Added Jan 2020 Updated Dec 2020 6 parts 10,616 words 17,529 views 4.7 stars (12 votes)
• Conservation of Matt by BRK  MuscUp Musc SizeDn Hallow M/M  Working his checkout line on Halloween, Brady, to his dismay, spots his least favorite person: Matt Lansing, the bully who’d tormented him for being short and gay in high school. If only someone would cut that jerk down to size! Added Oct 2017 3 parts 5,108 words 10,780 views 4.7 stars (12 votes)
• Hot night air by Josh Barrett  CockUp Cock MuscUp Musc Hairier   Added Feb 2014 2 parts 3,500 words 17,256 views 4.7 stars (12 votes)
• Johnny Pecs by BRK  CockUp Cock Musc Tf  Unexpectedly inheriting part of an island estate off the coast of Maine, Kent travels there to assess his options. On arriving in Glen Rush, he meets the young caretaker—a handsome stunner who’s acquired, with some justification, the nickname “Johnny Pecs”. Added Sep 2017 2 parts 7,175 words 11,165 views 4.7 stars (12 votes)
• Transformetics by Dasilva  CockUp Cock Self MuscUp Musc SizeDn SizeUp  When a hunky vendor from a well-known beauty product scam comes to his local flea market, Cody can’t help but buy into it. But what if this scam isn’t really a scam? Added Jun 2016 2,261 words 9,581 views 4.7 stars (12 votes)
• Twelve steps back by FanTCMan  CockUp Balls Cock MuscUp Musc Worship Handsomer  Ian pursued working out as a way of chasing off his inner demons. Then he heard about a serum that seemed to make you not just bigger, but enhanced everything about you that was masculine and sexy. And if it made you horny too, well, that was fine by him. Added Nov 2003 Updated Mar 2018 9 parts 33,235 words 24,138 views 4.7 stars (12 votes)
• Big Dick Energy by Ziel  CockUp Balls Cock HyCock Self HyCum  Steven needs a serious pick-me-up if he is going to survive a day of classes on next to no sleep. Fortunately, there’s a store near campus that ought to carry just what he needs—an aptly named drink known as “Big Dick Energy”. Added Mar 2020 3,309 words 9,814 views 4.7 stars (9 votes)
• The Bridge by Stumpjumper  CockUp Cock 2Gay MuscUp Musc Scent Tf Hairier AI  A safety technician is exposed to an artificial intelligence that rebuilds him and his best friend in ways they can't imagine. A decade later, the repercussions are still unfolding. Added Jun 2019 5,446 words 8,864 views 4.7 stars (9 votes)
• Fred’s odyssey by RdyRoger  CockUp Cock MuscUp Musc Worship  After saving the life of a magic-user on a tropical beach, skinny Fred suddenly finds his dreams of size and endowment coming true—not only for him but for his friends, too. Added Jul 2002 6 parts 25,375 words 28,916 views 4.7 stars (9 votes)
• Heavy quarantine by Portowulf  CockUp MuscUp BellyUp