Incest

• Adam’s first growth spurt by MDS  [  ]  Adam comes home from a day of being bullied at school to find he definitely won't have to worry about anything like that after today.  •Huge Cock •Muscle Growth •Muscle/Strength •Giants •Size Increase •Incest •Brothers  Added Nov 2016 2,350 words 46,592 views 4.3 stars (15 votes)
• Adventures of an Ivy League himbo by iHeywood  [  ]  This is a story all about how Liam Montgomery became the best himbo ever while a student at an Ivy League university.  •Huge Cock •Hyper Cock •Nipcocks •Hyper Cum •Nipple Emissions •Multicock •Hyper Anus •Male Pregnancy •Incest •Father/Son •Set in the Future •M/M •M/M/M  Added Jun 2022 2 parts 5,749 words 4,858 views 5.0 stars (18 votes)
• Alex’s gift by Will Bowden  [  ]  A teen discovers his shapeshifting ability, which seems to be tied to the horniness of other guys.  •Incest •Brothers •Shapeshifting •t/t  Added Apr 2003 3 parts 4,345 words 38,221 views 4.7 stars (15 votes)
• All good things by Anon Amon  [  ]  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.  •Cock Growth •Cockfucking •Huge Balls •Huge Cock •Hyper Cock •Cum inflation •Hyper Cum •Nipple Emissions •Straight to Gay •Immobility •Muscle Growth •Muscle/Strength •Incest •Brothers •Twins •Infectious •M/M •M/M/M  Added Feb 2017 Updated Oct 2020 104 parts 119,339 words 184,606 views 4.6 stars (133 votes)
• Alpha Logan claims a beta by Eric Aaldersen  [  ]  Shortly after becoming an alpha, Brian’s younger brother Logan sites a beta of his own while working out in the local gym.  •Cock Growth •Huge Balls •Huge Cock •Hyper Cum •Hyper Strength •Muscle/Strength •Gradual Change •Incest •Brothers •Hyper Pheromones •Supernatural •Series •M/M  Added Dec 2021 4,961 words 6,572 views 5.0 stars (7 votes)
• Alpha Luke grows his circle by Eric Aaldersen  [  ]  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.  •Huge Balls •Huge Cock •Muscle Growth •Muscle/Strength •Incest •Brothers •Supernatural •Series  Added Mar 2020 8,980 words 8,756 views 5.0 stars (10 votes)
• Alpha Mike and his alpha bro by Eric Aaldersen  [  ]  Meet Alpha Mike, Luke’s older brother, on the day that he discovers that his little bro is an alpha, too!  •Cock Growth •Huge Balls •Huge Cock •Muscle Growth •Muscle/Strength •Gradual Change •Incest •Brothers •Supernatural •Series  Added Mar 2020 5,437 words 9,062 views 4.6 stars (20 votes)
• Alpha product series by Chet Boner  [  ]  19-year-old Trent accepts a free trial product series called “Alpha Product” in exchange for his feedback. He receives the first product very quickly, but doesn’t know how many people would be affected and grow as a result of this choice!  •Cock Growth •Huge Balls •Hyper Cum •Nipple Emissions •Muscle Growth •Muscle/Strength •Age Difference •Incest •Brothers •Father/Son •Stories with Images •M/M •M/M/M  Added May 2017 Updated May 2019 19 parts 23,227 words 74,992 views 4.4 stars (42 votes)
• Alt-world by BRK  [  ]  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...  •Cock Growth •Huge Cock •Hyper Cock •Multiarm •Multilimb •Replication •Muscle/Strength •Plausible Size Difference •Size Increase •Incest •Twins •M/M  Added Jul 2011 2 parts 5,265 words 27,215 views 4.9 stars (14 votes)
• Another big morning by Thatbadwriter  [  ]  It never fails. You’re sitting there on the living room floor with your cereal trying to watch some TV, when your dad comes down and decides Saturday morning is the perfect time to start growing and getting himself off. And then your horny brother comes home…  •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Hyper Cum •Muscle Growth •Muscle/Strength •Giants •Size Increase •Incest •Brothers •Father/Son •Destruction/Violence •M  Added Nov 2020 1,226 words 17,957 views
• The awakening by Johnny M  [  ]  Danny’s secret muscle-breast fantasy kink begins bleeding into the real world.  •Hyper Cum •Nipple Emissions •Muscle Breast •Muscle/Strength •Age Difference •Incest •Brothers •Father/Son •M/M •M/M/M •M/M/M/...  Added Jul 2012 10 parts 24,690 words 57,657 views 4.6 stars (17 votes)

• Baby brother by Shawn D. Stewart  [  ]  "Kev, did you see a glass here?” “Whoa, man, was that yours? Sorry… I was really thirsty…” “You drank it!?” Aaaaand off we go!  •Cock Growth •Muscle Growth •Muscle/Strength •Getting Taller •Incest •Brothers  Added Mar 2003 2,879 words 115,272 views 4.3 stars (34 votes)
• Bad suggestion by pkak2k12  [  ]  I’ve learned what I say about others happens. However, I’m still figuring out how to use it, and my best friend and little brother kind of ended up being test subjects for it.  •Cock Growth •Muscle Growth •Muscle/Strength •Getting Taller •Plausible Size Difference •Size Increase •Retcon •Suggestion •Incest •Brothers •M/M •M/t  Added Sep 2022 1,619 words 5,320 views 4.6 stars (19 votes)
• Bali encounter by LenZelig  [  ]  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.  •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Getting Taller •Size Increase •First Time/Virgin •Incest •Brothers •Twins •Bisexual •Hetero Sex •Dom/Sub •M/F •M/M •M/M/F •M/M/M  Added Nov 2017 Updated Dec 2017 2 parts 29,433 words 12,782 views 5.0 stars (10 votes)
• Bending the straight boys by iciss  [  ]  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.  •Cock Growth •Huge Cock •Public Orgasm •Straight to Gay •Muscle Growth •Muscle/Strength •Getting Handsomer •First Time/Virgin •Incest •Brothers •Twins •Nonconsensual change •Infectious •M/M •M/M/M  Added Jan 2008 2 parts 11,063 words 64,216 views 4.7 stars (38 votes)
• Ben’s escapades by Kaelan  [  ]  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?  •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Self-suck •Hyper Cum •Nipple Emissions •Muscle Growth •Muscle/Strength •Gradual Change •Incest •Brothers •M/M •M/M/M  Added Feb 2018 Updated Jun 2018 9 parts 33,606 words 52,492 views 4.7 stars (37 votes)
• Beta Logan and his big brother by Eric Aaldersen  [  ]  Logan has difficulty controlling himself as his older brother Brian becomes a bigger and bigger stud.  •Cock Growth •Cut to Uncut •Huge Balls •Huge Cock •Hyper Cum •Hyper Strength •Muscle Growth •Muscle/Strength •Gradual Change •Incest •Brothers •Hyper Pheromones •Supernatural •Series  Added Jun 2020 6,499 words 16,656 views 5.0 stars (14 votes)
• Big changes by Ziel  [  ]  Troy’s rapidly growing hypercock is getting kind of embarrassing, especially as it’s caught the attention of a pair of obsessive and very uninhibited twins.  •Cock Growth •Huge Balls •Ball Growth •Hyper Cock •Hyper Cum •Incest •Twins •Christmas •Easter •Gay Pride •Halloween •Valentine's Day •Stories with Images •M/M •M/M/M  Added Dec 2013 Updated Aug 2022 12 parts 72,439 words 84,723 views 4.6 stars (25 votes)
• Blood lust by muscl4life  [  ]  The vampire Drago plots his revenge against his twin brother, Draco, and Kevin, Danny, and Greg get caught in the middle.  •Cock Growth •Huge Cock •Hyper Cock •Muscle Growth •Muscle/Strength •Size Increase •Incest •Twins •Nonconsensual change •Vampires •Werewolves •Halloween •M/M  Added Nov 2013 Updated Dec 2013 3 parts 9,393 words 26,220 views 4.4 stars (8 votes)
• The blue pumpkin by BRK  [  ]  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…  •Always Hard •Cock Growth •Huge Cock •Hyper Cock •Hyper Cum •Multiarm •Multilimb •Multitongue •Replication •Muscle Growth •Muscle/Strength •Stretchy •Getting Taller •Mouthcock •Incest •Twins •Merging •Supernatural •Halloween •Series  Added Oct 2020 6 parts 8,774 words 7,812 views 4.9 stars (15 votes)
• Body game: Encounter 813 by BRK  [  ]  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.  •Always Hard •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Hyper Cum •Extra digits •Multi-abs •Multicock •Multiarm •Multilimb •Multipec •Multitongue •Replication •Stacking •Muscle Growth •Stretchy •Foot Growth •Getting Taller •Plausible Size Difference •Size Increase •Getting Hairy •Hyper Tongue •Tongue Growth •Mouthcock •Incest •Brothers •Series •M/M •M/M/M  Added May 2016 Updated Jun 2021 9 parts 49,133 words 37,005 views 4.9 stars (26 votes)
• The bodyguards by Alakazam1988  [  ]  Two already huge and beautiful brothers apply for a job guarding a man who might be able to help them get even bigger.  •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Nipcocks •Hyper Cum •Nipple Emissions •Multicock •Hyper Muscle •Muscle Growth •Muscle Gut •Muscle/Strength •Belly Growth •Gradual Change •Plausible Size Difference •Size Increase •Inflation •Incest •Brothers •Twins •M/M •M/M/M  Added Apr 2021 Updated Aug 2021 9 parts 22,376 words 36,521 views 4.8 stars (43 votes)
• Boosted by West  [  ]  Phil has a clumsy moment, and suddenly the school’s Augmented Reality room ends up being so much more.  •Cock Growth •Huge Cock •Hyper Cock •Hyper Cum •Multi-abs •Hyper Muscle •Muscle Growth •Muscle/Strength •Getting Taller •Plausible Size Difference •Size Increase •Tongue Growth •App •Incest •Brothers  Added Aug 2021 Updated Sep 2021 3 parts 5,436 words 12,340 views 4.6 stars (19 votes)
• The box by BRK  [  ]  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.  •Cock Growth •Huge Cock •Public Orgasm •Extra digits •Multicock •Multihead •Four Legs •Multiarm •Multileg •Multilimb •Replication •Muscle Growth •Stretchy •Getting Handsomer •Getting Taller •First Time/Virgin •Incest •Brothers •Witch/Warlock/Wizard •Series •M/M •M/M/M •M/M/M/...  Added Dec 2002 Updated Sep 2019 8 parts 29,657 words 25,370 views 5.0 stars (13 votes)
• Boytaurs from Outer Space! by BRK  [  ]  Sev, the commander of a Taurian survey mission, judges Earth suitable for cultivating an aggressive alien grain, but the danger to Earth’s ecosystem drives the idealistic Elek to rebel and flee with some valuable equipment. When a conflicted Kiyy chases him, they both encounter the strange inhabitants and discover that humans and Taurians find each other mutually captivating.  •Huge Cock •Multicock •Boytaur •Four Legs •Multiarm •Multileg •Multilimb •Muscle Growth •Muscle/Strength •Incest •Twins •Aliens •Space Travel •M/M •M/M/M •M/M/M/...  Added Jun 2015 Updated Oct 2016 6 parts 13,050 words 14,326 views 4.4 stars (16 votes)
• The boytaurs of Bel-Air by BRK  [  ]  When Steve’s attempts at bringing boytaurs into popular awareness through CGI ends up being a disaster, his only recourse is to use the real thing.  •Multicock •Boytaur •Multiarm •Multileg •Multilimb •Muscle Growth •Incest •Twins •M/M •M/M/M  Added Mar 2004 3,080 words 8,441 views
• Brandon’s bro by FanTCMan  [  ]  Brandon initiates his brother onto a secret society of guys who are being made more and more muscular, hung, and sexy.  •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Getting Hairy •Incest •Brothers  Added Jan 2017 4 parts 8,692 words 24,188 views 4.5 stars (22 votes)
• Brother dear by MsclGuy  [  ]    •Muscle/Strength •Incest •Brothers  Added Jul 2002 766 words 26,579 views 3.9 stars (8 votes)
• Brotherly love by Seth Peterson  [  ]  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.  •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Muscle Growth •Muscle Gut •Muscle/Strength •Getting Taller •Size Increase •Incest •Brothers •Merging  Added Dec 2015 7,666 words 41,869 views 4.8 stars (16 votes)
• Brotherly love by TheSizeKing  [  ]  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.  •Cock Growth •Huge Cock •Hyper Cock •Muscle Growth •Muscle/Strength •Getting Taller •Size Increase •Incest •Brothers  Added Apr 2020 5 parts 7,816 words 14,324 views 4.9 stars (14 votes)
• The brothers by FanTCMan  [  ]  Cory Callahan and his three sibs participate in a secret program, resulting in more muscles, body hair, cock size, and horniness.  •Always Hard •Cock Growth •Huge Cock •Addiction •Straight to Gay •Muscle Growth •Muscle/Strength •Gradual Change •Getting Hairy •Incest •Brothers  Added Mar 2003 8 parts 22,620 words 102,478 views 4.8 stars (89 votes)
• Brother’s closet by Josh Dugan  [  ]  A handsome athletic older brother offers somewhat more than expected.  •Lots of Legs •Multileg •Multilimb •Replication •Detachable •Incest •Brothers •t/t  Added May 2002 962 words 20,996 views 4.0 stars (5 votes)
• Bull brothers by brazboy  [  ]  Caio and André live together in their family farm, burdened by the loans inherited from their parents. Caio supports both of them selling his milk, but his younger brother still wants to contribute, even if he has to do it behind his elder’s back.  •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Cum Milking •Hyper Cum •Nipple Emissions •Hyper Muscle •Muscle Breast •Muscle Growth •Incest •Brothers •M/M  Added Nov 2021 3 parts 11,985 words 11,455 views 4.7 stars (7 votes)
• Bull’s strength by muscl4life  [  ]  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.  •Always Hard •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Multi-abs •Multicock •Muscle Growth •Muscle/Strength •Muscle Worship •Transformation •Getting Taller •Plausible Size Difference •Size Increase •Age Difference •Bestiality •Incest •Father/Son •Destruction/Violence •Infectious •Flying •M/M •M/M/M •M/M/M/...  Added Jul 2018 Updated Oct 2018 28 parts 88,398 words 75,533 views 4.8 stars (37 votes)

• Canticle of the Fair King by brazboy  [  ]  A fable showing the immense wisdom of the Fair King, as he is challenged by a vile noble with a riddle which apparently has no right answers.   •Hyper Cock •Hyper Cum •Nipple Emissions •Hyper Muscle •Muscle Breast •Incest •Brothers •Twins •Restraints •Fantasy Realm •M/M •M/M/M  Added Sep 2022 6,693 words 1,319 views
• Centurion of light by Ravine Mountain  [  ]  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.  •Cock Growth •Huge Cock •Hyper Cock •Nipcocks •Hyper Cum •Nipple Emissions •Multi-abs •Muscle Growth •Muscle/Strength •Voice Deepening •Size Increase •Incest •Twins •Demons •Ancient Era •M/M •M/M/M •M/M/M/...  Added May 2014 Updated Jan 2019 12 parts 38,226 words 52,912 views 4.9 stars (48 votes)
• The chameleon kid by smitch69  [  ]  It was simple and I had been doing it for years. It was always a rush when I took the shape of someone new.  •Replication •Incest •Twins •Bisexual  Added Jan 2006 8 parts 3,678 words 13,888 views 4.7 stars (6 votes)
• Chris olympus by FanTCMan  [  ]    •Cock Growth •Straight to Gay •Muscle Growth •Muscle/Strength •Getting Hairy •Age Difference •Incest •Father/Son  Added Dec 2002 3 parts 9,167 words 35,739 views 4.5 stars (21 votes)
• Christmas wish by Riu  [  ]  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.  •Cock Growth •Huge Cock •Hyper Cock •Straight to Gay •Muscle Growth •Muscle/Strength •Suggestion •Incest •Brothers •Christmas •M/M  Added Dec 2016 3,925 words 24,728 views 4.8 stars (28 votes)
• The chronicles of Besar Otot by OneLuckyGuy89  [  ]  On a distant unknown island near Indonesia called Besar Otot, Kenny Masters returns home a new man and intends to change his family as well.  •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Hyper Cum •Multicock •Gender Swap •Straight to Gay •Muscle Growth •Muscle/Strength •Transformation •Getting Taller •Plausible Size Difference •Size Increase •Age Progression •Getting Hairy •Age Difference •Incest •Brothers •Father/Son •Nonconsensual change •Hyper Pheromones  Added Jan 2020 Updated May 2021 8 parts 25,601 words 16,388 views
• Cock tongue fun by lock444  [  ]  Charlie’s mischievous friend Mike discovers Charlie’s brother has a magical device that turns tongues into cocks.  •Mouthcock •Incest •Brothers  Added Jun 2013 2,412 words 14,121 views 4.5 stars (6 votes)
• College town by James Fourlegs  [  ]  A randy warlock remains circumspect about having turned the whole town into a herd of boytaurs.  •Multicock •Boytaur •Multilimb •Replication •Wristfeet •Incest •Twins  Added May 2002 945 words 11,705 views 4.2 stars (6 votes)
• Coming of age by Also Known As  [  ]  Jerry’s teenaged nephew comes to visit him in San Francisco, and turns out to be very huge, very beautiful and very uninhibited.  •Cock Growth •Huge Balls •Huge Cock •Self-suck •Hyper Cum •Muscle Growth •Muscle/Strength •Getting Taller •Size Increase •Hairless •Incest  Added Feb 2019 4 parts 12,660 words 21,261 views 5.0 stars (15 votes)
• Company guys by FanTCMan  [  ]  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.  •Cock Growth •Huge Cock •Other Mental Changes •Straight to Gay •Muscle Growth •Muscle/Strength •Increased Libido •Getting Hairy •Age Difference •Incest •Father/Son  Added Dec 2002 2 parts 7,919 words 32,742 views 4.6 stars (11 votes)
• The construction worker by Peterbilt  [  ]  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.  •Cock Growth •Huge Cock •Muscle/Strength •Age Difference •First Time/Virgin •Incest •Father/Son  Added Sep 2015 22,148 words 24,338 views 4.8 stars (12 votes)
• Cool bracelet, bro by BRK  [  ]  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.  •Always Hard •Cock Growth •Huge Cock •Hyper Cock •Self-suck •Multicock •Multihead •Multiarm •Multileg •Multilimb •Three Legs •Multipec •Stacking •Muscle Growth •Muscle/Strength •Retcon •Suggestion •Incest •Brothers •t/t •t/t/t  Added Feb 2014 Updated Mar 2018 5 parts 16,745 words 64,215 views 4.5 stars (50 votes)
• The cowboy by Chance Riverwind  [  ]    •Cock Growth •Huge Cock •Muscle/Strength •Giants •Age Difference •Incest •Father/Son  Added Jul 2002 1,967 words 17,572 views 2.0 stars (5 votes)

• Daddy’s little boy by TonnyGiant  [  ]  Jimmie returns home from college for the summer to rediscover just how drawn he is to his massive, muscle bear stepfather.  •Huge Cock •Muscle Gut •Muscle/Strength •Plausible Size Difference •Age Difference •Incest •Father/Son •Dom/Sub •M/M  Added Sep 2018 Updated May 2019 2 parts 4,961 words 26,820 views 4.7 stars (11 votes)
• Dad’s gift by John Y.  [  ]  For Jeff’s 18th birthday, his dad decides to give him something special and close to his heart—a donkey dick.  •Cock Growth •Huge Cock •Age Difference •Incest •Father/Son  Added Mar 2004 4,994 words 47,333 views 4.7 stars (27 votes)
• Daemos island by Charles Westfall  [  ]  A Polish scientist and explorer, Ferdinand Rolcek, discovers a hidden island where the lost secrets of the Daemos, alien pioneers of masculine beauty and sexuality far beyond anything known to humanity, are finally revealed to him; and what he learns makes him never want to leave again. Don’t worry, he won’t be lonely.  •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Increased Libido •Size Increase •Age Difference •Incest •Father/Son •Twins •Destruction/Violence •M/t  Added Feb 2003 6 parts 14,639 words 28,522 views 3.2 stars (20 votes)
• Damian and the three muscleteens by hyperboi  [  ]    •Cock Growth •Huge Cock •Hyper Cock •Straight to Gay •Muscle Growth •Muscle/Strength •Age Difference •Incest •Brothers •Father/Son •Twins •Infectious  Added Dec 2012 5 parts 8,169 words 53,235 views 4.3 stars (27 votes)
• Dana gets wired by FanTCMan  [  ]    •Muscle Growth •Muscle/Strength •Voice Deepening •Incest •Father/Son  Added Jul 2002 3 parts 11,472 words 20,805 views 4.3 stars (8 votes)
• A day at the beach by Thatbadwriter  [  ]  You watch in dismay and amazement as your father, who’s gained the ability to grow himself to giant size in a freak medical accident, takes a trip to the beach with you and decides to make himself bigger than he’s ever tried to become before.  •Huge Cock •Hyper Cock •Giants •Size Increase •Age Difference •Incest •Father/Son •Destruction/Violence  Added Aug 2019 1,624 words 10,828 views 4.1 stars (16 votes)
• A day in the life of a pregnant gay couple by JKL  [  ]  A glimpse into the pleasurable life of a couple of extraordinary men who’ve impregnated each other with their seed.  •Always Hard •Huge Cock •Muscle Breast •Muscle/Strength •Male Pregnancy •Incest •Twins  Added May 2021 839 words 5,581 views 4.3 stars (6 votes)
• Days & Knights by iHeywood  [  ]  Bash wants to surprise his family by coming home from college for Thanksgiving early. But he gets a surprise himself. His dad is sucking his own massive cock.  •Cock Growth •Huge Cock •Hyper Cock •Self-suck •Hyper Cum •Muscle Growth •Age Difference •Incest •Father/Son •Thanksgiving •M/M •M/M/M  Added Apr 2022 Updated May 2022 3 parts 9,852 words 6,868 views 4.9 stars (34 votes)
• Demon brand jeans by alwaysmyway  [  ]  Shopping for creepy Halloween costumes at the last minute is probably not a good idea.  •Wings •Muscle Growth •Muscle/Strength •Incest •Brothers •Halloween •Flying •M/M  Added Aug 2012 6,033 words 27,766 views 4.5 stars (26 votes)
• Desire baubles by Writ Bro  [  ]  Jack finds some super-gay Christmas ornaments that are all muscle, cock, and ass, so of course he brings a bunch home, just in time for the party with his closest friends.  •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Incest •Twins •Christmas  Added Dec 2019 3,034 words 5,106 views 4.4 stars (5 votes)
• Dickville by OneLuckyGuy89  [  ]  Rodney Finnegan and his four boys arrive in a Florida marshland town named Dickville. And it doesn’t take them long to figure out how it got that name.  •Cock Growth •Huge Cock •Straight to Gay •Muscle Growth •Man Scent •Butt Growth •Increased Libido •Getting Handsomer •Voice Deepening •Getting Taller •Size Increase •Getting Hairy •Incest •Brothers •Father/Son •M/M •t/t  Added Apr 2022 2 parts 5,446 words 9,034 views 4.5 stars (11 votes)
• Dig’s island by BRK  [  ]  Shipwrecked on a remote island, four brothers grow up to be incredibly close—and that’s before they encounter a secret power on the island that transforms them each in different ways.  •Cock Growth •Huge Cock •Multiarm •Wings •Muscle Growth •Muscle/Strength •Getting Taller •Size Increase •Incest •Brothers •Flying •19th Century •M/M/M/...  Added Mar 2005 4 parts 3,757 words 24,056 views 4.3 stars (7 votes)
• The djinn by hyperboi  [  ]    •Cock Growth •Huge Cock •Hyper Cock •Muscle Growth •Muscle/Strength •Incest •Brothers •Twins •Djin/Jinn/Genie  Added Dec 2012 8 parts 14,201 words 36,154 views 4.8 stars (18 votes)
• Don’t talk about me! by jewelbee  [  ]  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?  •Public Orgasm •Straight to Gay •Belly Growth •Getting Fatter •Retcon •Suggestion •Incest •Father/Son •Nonconsensual change  Added Aug 2020 Updated Jul 2021 3 parts 4,348 words 13,111 views 4.9 stars (46 votes)
• The double room by Tyler Wilson  [  ]  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.  •Huge Cock •Multicock •Multihead •Multiarm •Multilimb •Multitorso •Incest •Twins •Triplets •Merging •M/M •M/M/M  Added Jul 2017 Updated Feb 2019 3 parts 7,922 words 13,928 views 4.9 stars (17 votes)
• Double trouble by NBCK99  [  ]  Caleb is really into how hot identical twins are. His roommate decides to help him out a little.  •Incest •Twins •M/M  Added May 2015 4,088 words 12,665 views 4.7 stars (30 votes)
• Doubling up by BRK  [  ]  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.  •Always Hard •Multi-abs •Multicock •Multihead •Multiarm •Multilimb •Multipec •Multitorso •Stacking •Incest •Twins •Merging •M/M •M/M/M •M/M/M/...  Added Jun 2013 Updated May 2015 3 parts 7,007 words 24,504 views 4.8 stars (16 votes)

• The e-journal by hyperboi  [  ]  Tyler’s birthday is not going well: no one can come, not even his parents, and his big brother is being an obnoxious bully as usual. Plus he’s horny as heck. At least his best friend gave him a gift: an e-journal. He decides to write in it not about the way things are, but the way he wants things to be.  •Cock Growth •Huge Balls •Huge Cock •Multi-balls •Multicock •Muscle Growth •Muscle/Strength •Retcon •Incest •Brothers •Nonconsensual change  Added Jul 2018 3,597 words 15,885 views 4.7 stars (22 votes)
• Empire by LenZelig  [  ]  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.  •Cock Growth •Huge Cock •Self-suck •Straight to Gay •Muscle Growth •Muscle/Strength •Getting Taller •Size Increase •Age Difference •Bestiality •First Time/Virgin •Incest •Brothers •Father/Son •Twins •Bisexual •Hetero Sex •Nonconsensual change •Sex-Slave •Shared Body •Aliens •Space Travel •Witch/Warlock/Wizard •Thanksgiving •Mind Control •Series  Added Apr 2019 Updated May 2021 40 parts 365,561 words 125,149 views 3.4 stars (5 votes)
• Endmyths by Taur Reg  [  ]  Transformations spread through an entire town—but why?  •Multilimb •Age Difference •Incest •Father/Son •Centaurs •Naga •Satyrs •Shapeshifting  Added Aug 2013 12 parts 18,537 words 16,745 views 4.8 stars (6 votes)
• The escape by hyperboi  [  ]  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...  •Cock Growth •Huge Cock •Hyper Cock •Self-suck •Straight to Gay •Muscle Growth •Muscle/Strength •Incest •Brothers •Twins •Nonconsensual change •Aliens  Added Dec 2014 3,492 words 24,290 views 4.7 stars (21 votes)

• Family trouble by HandsomeLitleBoy  [  ]  Max starts to notice some strange behavior from his big brother Brad—behavior that involves ungodly amounts of cum.  •Cock Growth •Huge Balls •Huge Cock •Hyper Cum •Muscle Growth •Getting Taller •Incest •Brothers •Twins  Added Oct 2020 2 parts 2,454 words 9,316 views 4.8 stars (9 votes)
• Family values by FanTCMan  [  ]  Visiting his brothers in California leads to surprise after surprise, starting with their being much bigger than they had been before...  •Huge Cock •Straight to Gay •Muscle Growth •Muscle/Strength •Getting Hairy •Incest •Brothers  Added Jul 2014 1,448 words 28,705 views 4.0 stars (32 votes)
• Field agent by BRK  [  ]  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.  •Cock Growth •Huge Cock •Hyper Cock •Hyper Cum •Multicock •Boytaur •Four Legs •Multiarm •Multileg •Multilimb •Replication •Muscle Growth •Public Nudity •Size Increase •Incest •Twins •Infectious •Centaurs  Added Apr 2020 Updated Nov 2020 2 parts 5,236 words 8,795 views 4.8 stars (17 votes)
• Finding Owen by BRK  [  ]  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.  •Huge Cock •Muscle Growth •Muscle/Strength •Getting Taller •Plausible Size Difference •Size Increase •Getting Hairy •Incest •Brothers •Destruction/Violence •Werebears •Werewolves •Supernatural •Series •M/M •M/M/M  Added Aug 2019 Updated Sep 2021 12 parts 73,076 words 24,408 views 4.9 stars (18 votes)
• The formula by hyperboi  [  ]  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.  •Cock Growth •Huge Cock •Hyper Cock •Self-suck •Muscle Growth •Muscle/Strength •Age Difference •Incest •Brothers •Father/Son •Twins  Added Jan 2021 Updated Feb 2021 4 parts 14,631 words 21,919 views 4.9 stars (30 votes)
• Four for the game by Clearlyhere  [  ]  Four jocks play a body changing game.  •Cock Growth •Cock Shrinking •Huge Cock •Muscle Growth •Muscle/Strength •Getting Handsomer •Size Increase •Incest •Brothers •Body Swap  Added Feb 2017 2,962 words 19,345 views 4.5 stars (19 votes)
• The four jocks book 2 by BRK  [  ]  The game has been passed on to a bunch of swim team hotties, who elect to play immersed in a hot tub.  •Cock Growth •Huge Cock •Multilimb •Replication •Muscle Growth •Muscle/Strength •Incest •Twins •Series •M/M •M/M/M/...  Added Sep 2009 2 parts 3,968 words 18,351 views 4.7 stars (6 votes)
• The four jocks: College buddies by NBCK99  [  ]  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.  •Always Hard •Cock Growth •Huge Cock •Self-suck •Multicock •Multilimb •Muscle Growth •Muscle/Strength •Retcon •Incest •Brothers •Series  Added Aug 2015 4,873 words 19,344 views 4.9 stars (17 votes)
• The four jocks: Horny teens by hyperboi  [  ]    •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Nipple Emissions •Multicock •Boytaur •Four Legs •Multiarm •Replication •Muscle Growth •Muscle/Strength •Getting Taller •Size Increase •Incest •Brothers •Series  Added Apr 2014 3 parts 7,484 words 31,746 views 4.7 stars (7 votes)
• The four jocks: Online edition by BRK  [  ]  A futuristic all-virtual version of the game leads to transformations in their already-tweaked full-body avatars, which they’re able to experience in the VR space as if they were their real bodies.  •Always Hard •Cock Growth •Huge Cock •Multicock •Multilimb •Multitorso •Replication •Muscle Growth •Muscle/Strength •Mouthcock •Incest •Brothers •Series •M/M •M/M/M/...  Added Jul 2012 3 parts 7,578 words 17,795 views 4.6 stars (7 votes)
• The four jocks: At the lake by BRK  [  ]  When Dane and his brother Sean go on a celebratory road trip after finishing college, Sean's best friends, the Fernandez twins, naturally tag along. But their trip takes a strange turn right out of the gate, not least thanks to a game the guys find in their room at the lakeside bed and breakfast.  •Always Hard •Cock Growth •Huge Cock •Multicock •Multiarm •Multilimb •Muscle Growth •Muscle/Strength •Suggestion •Incest •Brothers •Twins •Series •M/M •M/M/M/...  Added Jul 2017 5,950 words 11,861 views 4.4 stars (12 votes)
• Frank’s boyss by Multiple Authors  [  ]    •Huge Cock •Multicock •Multilimb •Incest •Brothers  Added Mar 2009 2 parts 5,815 words 17,312 views
• Frat hunting by hyperboi  [  ]  A pair of twins with the ability to alter themselves and the world around them have some fun tailoring one of the frats to meet their needs.  •Cock Growth •Hyper Cock •Muscle Growth •Muscle/Strength •Suggestion •Incest •Brothers •Twins  Added Jul 2013 Updated Aug 2013 1,543 words 28,626 views 4.5 stars (20 votes)
• From the files of the Magic Misuse Office by BRK  [  ]  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.  •Cock Growth •Huge Cock •Multicock •Multihead •Multiarm •Multilimb •Multitorso •Replication •Straight to Gay •Muscle Growth •Increased Libido •Transformation •Social Media •Incest •Twins •Merging •Witch/Warlock/Wizard •M/M •M/M/M  Added Sep 2017 Updated Sep 2021 6 parts 20,306 words 16,727 views 4.9 stars (34 votes)
• A fucking god by Jerkoffcentral  [  ]  A teenager is both exasperated and incredibly turned on by how his body and everything about it seems to be getting freakier and freakier.  •Cock Growth •Huge Balls •Huge Cock •Hyper Cum •Hyper Muscle •Muscle Growth •Muscle/Strength •Incest •Brothers  Added Mar 2019 Updated Jun 2020 2 parts 5,278 words 32,393 views 4.5 stars (18 votes)

• Glitch by BRK  [  ]  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.  •Always Hard •Cock Growth •Huge Cock •Extra digits •Multi-abs •Multicock •Multiarm •Multileg •Multilimb •Three Legs •Multipec •Replication •Stacking •Always Shirtless •Hyper Tongue •Tongue Growth •Retcon •Incest •Twins •M/M •M/M/M  Added Dec 2020 Updated Mar 2021 4 parts 13,963 words 5,801 views 4.9 stars (7 votes)
• Growing closer by Chance Micheals  [  ]  Spying on Luke, the object of his lust, young Gareth discovers that Luke is even more special than he thought—and then Luke’s brother shows up.  •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Incest •Brothers •M/M  Added Jun 2015 1,018 words 16,372 views 4.2 stars (20 votes)

• The Halloween costume by frooooooo  [  ]  A Halloween costume you share with your brother? Might be fun. What's the worst that could happen?  •Incest •Brothers •Merging •Halloween  Added Oct 2012 2,220 words 17,838 views 4.0 stars (7 votes)
• Have yourself a megalithic Christmas by Ziel  [  ]  A sort of sequel/follow up/spin off to “A Miracle on 69th Street”. This time the story focuses on Calvin, a down on his luck dude who has long suffered under his overbearing and outright mean-spirited older brother, but all that’s about to change. It’s Calvin’s turn to be the “big” brother in every sense of the word.  •Cock Growth •Huge Cock •Hyper Cock •Giants •Size Increase •Incest •Brothers •Christmas •Series  Added Dec 2016 8,115 words 11,749 views 3.6 stars (7 votes)
• His brother drains his manhood by Ballmeat  [  ]  A younger brother drains his big, strong, overconfident older brother of his cock, balls and muscle.  •Cock Growth •Cock Shrinking •Cock Theft •Dom to Sub •Straight to Gay •Muscle Growth •Muscle Theft •Muscle/Strength •Incest •Brothers •Dom/Sub •Humiliation •Nonconsensual change •M/M  Added Jan 2018 2,593 words 53,127 views 4.3 stars (35 votes)
• His last hypnosis show by EdIam  [  ]  Paul has decided to put his long career as a hypnotist to bed… along with many of the new local men he’s meeting.  •Straight to Gay •Public Nudity •Suggestion •Age Difference •Incest •Father/Son •Sex-Slave •Hypnosis •Mind Control •M/M  Added Mar 2022 3 parts 10,928 words 1,826 views 4.2 stars (6 votes)
• Home for the holidays by Richard Jasper  [  ]  Chris Kirkpatrick, an 18-year-old high school Big Man on Campus, is eager to see his slightly older brother Roger back “home for the holidays” after his first semester as a freshman at State. Boy, is he in for a surprise!  •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Getting Taller •Incest •Brothers •Christmas  Added Dec 2020 3,149 words 6,783 views 5.0 stars (5 votes)
• How it’s done by phallicphan  [  ]  College centaur shows his younger brother how to breed.  •Muscle/Strength •First Time/Virgin •Incest •Brothers •Centaurs •M/M  Added Oct 2017 4,189 words 9,142 views 5.0 stars (9 votes)

• I think... by EdIam  [  ]  Larry wants to think for Zack.  •Other Mental Changes •Straight to Gay •Muscle/Strength •Age Difference •Incest •Brothers •Twins •Dom/Sub •Humiliation •Hypnosis •Mind Control •M/M •M/M/M  Added Apr 2021 Updated Aug 2022 12 parts 151,254 words 15,421 views 4.1 stars (10 votes)
• I wanna get huge by JayPat  [  ]  “I wanna get huge,” he said.  •Muscle Growth •Muscle/Strength •Size Increase •Incest •Brothers •Christmas •Valentine's Day •Series  Added Oct 2012 2 parts 21,281 words 55,126 views 4.4 stars (23 votes)
• Illusions by Cockatrice  [  ]  Jacob is a huge fan of the famous magician Wondrous Will. One day he is invited backstage and is let in on the show’s biggest secret.  •Detachable •Incest •Twins  Added Dec 2019 3,670 words 2,769 views
• Induced transformation: a brief history by BRK  [  ]  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.  •Cock Growth •Huge Cock •Hyper Cock •Hyper Cum •Replication •Muscle Growth •Age Regression •App •Retcon •Age Difference •Incest •Brothers •Father/Son •Nonconsensual change •Infectious •All Dialog •M/M •M/M/M/...  Added Jun 2020 2,248 words 9,455 views 4.9 stars (16 votes)

• Jason’s big problem by Joven  [  ]  Teen athlete Jason unwittingly becomes part of a shady experiment to produce progressively larger cocks and balls that generate way too much cum. His playful and curious friends get drawn in, and when his cranky brother is roped in as well, having massive equipment becomes even more difficult.  •Cock Growth •Ball Growth •Huge Balls •Huge Cock •Hyper Cock •Hyper Cum •Muscle Growth •Muscle/Strength •Getting Taller •Size Increase •Incest •Brothers •t/t •t/t/t  Added Oct 2013 Updated Nov 2017 49 parts 114,700 words 187,265 views 4.5 stars (76 votes)
• Jocktaur pledge by BRK  [  ]  High school track superstar Tommy finds he isn’t king of the world anymore now that he’s left his small town for the huge, sprawling State U. His hopes of getting into a big frat end up crushed, and his last hope is a house where the brothers keep to themselves and hardly let anyone in at all.  •Cock Growth •Huge Cock •Boytaur •Four Legs •Multileg •Multilimb •Incest •Twins •M/M •M/M/M  Added Sep 2020 4,791 words 3,244 views 5.0 stars (5 votes)

• The Latin twins by RdyRoger  [  ]  A man is gifted by "the watchers" to make changes to himself and others that will last for 24 hours. Two of his escapades are detailed in this story.  •Cock Growth •Cock Shrinking •Huge Balls •Huge Cock •Straight to Gay •Muscle Growth •Muscle/Strength •Gradual Change •Getting Taller •Size Decrease •Size Increase •Race/Ethnicity Change •Suggestion •Incest •Brothers •Dom/Sub  Added Apr 2012 2 parts 7,238 words 37,972 views 4.7 stars (9 votes)
• Little bro by Ziel  [  ]  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.  •Cock Growth •Huge Cock •Hyper Cock •Muscle Growth •Muscle/Strength •Giants •Size Increase •Incest •Brothers  Added Apr 2017 5,382 words 39,545 views 4.7 stars (15 votes)
• Little brother gets big by pkak2k12  [  ]  You (a muscle stud) are home alone with your 20-year-old younger brother (Joey). After a good fap in the shower you hear a crash coming from downstairs. What is he doing?  •Cock Growth •Huge Cock •Muscle Growth •Getting Taller •Plausible Size Difference •Size Increase •Incest •Brothers •M/M  Added Jul 2022 1,596 words 8,461 views 5.0 stars (8 votes)
• Lockdown gym by BRK  [  ]  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.  •Always Hard •Cock Growth •Huge Cock •Replication •Straight to Gay •Muscle Growth •Muscle/Strength •Muscle Worship •Always Shirtless •Getting Handsomer •Gradual Change •Getting Taller •Age Difference •Incest •Brothers •Twins •Set during the Pandemic •M/M •M/M/M/...  Added Apr 2021 3,110 words 10,043 views 4.7 stars (16 votes)
• Look what thinking can get you by Louis C. DePasquale  [  ]  After an accident on the field playing baseball, a young man gains the ability to hear thoughts—and maybe more.  •Muscle/Strength •Incest •Brothers •Mind Control •t/t  Added Jun 2012 1,628 words 18,988 views 4.5 stars (13 votes)
• The lost temple of Shar’hradar by Charvolth  [  ]  I recently discovered that there was more to this D&D-inspired, enhanced-player fantasy adventure than I originally posted back when it was first submitted for the 2005 story contest. Here, very belatedly, is the rest of it.  •Huge Cock •Muscle Growth •Muscle/Strength •Pointy Ears •Size Increase •Incest •Twins •Witch/Warlock/Wizard •Fantasy Realm  Added Jun 2005 Updated Aug 2016 4 parts 11,568 words 11,296 views
• Love/shift by BRK  [  ]  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.  •Muscle Growth •Muscle/Strength •Always Shirtless •Man Scent •Gradual Change •Transformation •Size Increase •Getting Hairy •Age Difference •Incest •Father/Son •Werebears •Supernatural •Series •M/M  Added Dec 2017 Updated Apr 2019 11 parts 68,079 words 39,396 views 4.8 stars (35 votes)
• Lust & consequences by BRK  [  ]  Hayden manages to gain an ability that turns beliefs into truth, but the knack for making things turn out the way he wants them to is a lot more elusive.  •Cock Growth •Huge Balls •Huge Cock •Wings •Hyper Strength •Getting Handsomer •Retcon •Suggestion •Age Difference •Incest •Father/Son •Flying •Medieval(ish) •M/M  Added Feb 2022 2 parts 6,212 words 5,921 views 4.9 stars (12 votes)

• Making the rules by EdIam  [  ]  Frank likes structure and rules in his home. Desmond likes corrupting families. Whatever could happen when the two meet?  •Other Mental Changes •Straight to Gay •Man Scent •Incest •Brothers •Father/Son •Humiliation •Nonconsensual change •Sex-Slave •Hyper Pheromones •Hypnosis •Mind Control •M/M •M/M/M  Added Sep 2021 2 parts 22,700 words 5,540 views
• Male scent by Frank Easky  [  ]  Apprentice magician Sean’s potion exceeds his expectations, causing his personal musk to spread muscle growth to those who smell it.  •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Hyper Cum •Hyper Muscle •Muscle Growth •Muscle/Strength •Man Scent •Getting Taller •Giants •Size Increase •Age Regression •Getting Hairy •Incest •Brothers •Twins •Hyper Pheromones •Infectious  Added Jul 2002 2 parts 13,564 words 55,226 views 4.0 stars (15 votes)
• Mass X by Max Mann  [  ]  Five short stories of men getting bigger and sexier, through the use of “Mass X”.  •Cock Growth •Huge Cock •Straight to Gay •Muscle Growth •Muscle/Strength •Increased Libido •Getting Handsomer •Getting Hairy •Age Difference •Incest •Father/Son •Christmas •New Year's Eve  Added Feb 2005 5 parts 19,019 words 41,929 views 4.7 stars (16 votes)
• Massive by Alex Rif  [  ]  James finds the superhero costume his stepson had ordered from a strange website for Halloween, and decides to try it on.  •Size Increase •Body Suit •Age Difference •Incest •Father/Son •Lycra/Spandex •Halloween •Superhero/Supervillain •Stories with Images  Added Feb 2016 2 parts 2,851 words 32,114 views 3.4 stars (14 votes)
• Matched pairs by Jerkoffcentral  [  ]  Peter becomes infected, not just with growth, but with a need for more strength and size.  •Cock Growth •Huge Cock •Self-suck •Muscle Growth •Muscle/Strength •First Time/Virgin •Incest •Brothers •Bisexual •Hetero Sex •M/M •M/M/F  Added Oct 2013 Updated Jun 2016 14 parts 42,000 words 57,566 views 4.7 stars (30 votes)
• Matt and his dad by Meddler Incs  [  ]  When Matt comes home to visit his dad, he is forced into being part of The Crew.  •Huge Cock •Straight to Gay •Muscle Growth •Muscle/Strength •Incest •Father/Son •Nonconsensual change •Symbiotes •Hypnosis •Series  Added Jun 2020 3,343 words 10,884 views 4.7 stars (6 votes)
• Max and Chris by Drillur  [  ]  Two very hung brothers get tired of solo sex.  •Huge Cock •Hyper Cum •Incest •Brothers  Added Jul 2014 1,502 words 18,675 views 4.6 stars (26 votes)
• Me and my big brother by Elliott Corbett  [  ]  Kameron experiences a magical summer with his big brother, Kyle.  •Incest •Brothers •M/M  Added Dec 2021 2,799 words 3,252 views 4.7 stars (6 votes)
• Me two by BRK  [  ]  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.  •Multicock •Multihead •Multileg •Multilimb •Three Legs •Multipec •Replication •Incest •Twins •Merging •M/M  Added Jan 2021 2,725 words 3,429 views 5.0 stars (10 votes)
• Meta massage therapy by M.M.69  [  ]  A mysterious new massage parlor opened in town, and brothers Jared and Jason have VIP passes. What makes this place so special?  •Always Hard •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Multicock •Multihead •Boytaur •Four Legs •Multiarm •Multileg •Multilimb •Multipec •Multitorso •Replication •Straight to Gay •Hyper Muscle •Hyper Strength •Muscle Growth •Butt Growth •Getting Handsomer •Getting Taller •Plausible Size Difference •Size Increase •Retcon •Suggestion •Age Difference •Incest •Brothers •Father/Son •Dom/Sub •M/M  Added Nov 2021 Updated Jan 2022 3 parts 14,933 words 8,998 views 5.0 stars (14 votes)
• Metachange by LordTronimator  [  ]  Bullied 18-year old high school student Nathan just wants to spend his time in class doodling. But he’s always mocked for what he does. So what happens when a mysterious app suddenly shows up on his phone and promises to change things?  •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Hyper Cum •Four Legs •Multiarm •Multileg •Multilimb •App •Incest •Brothers •Humiliation •Nonconsensual change  Added May 2020 Updated Jun 2020 5 parts 8,689 words 8,393 views 4.6 stars (11 votes)
• The meteor shower by AGammer  [  ]  When the meteor shower hits his farm, it has an unexpected effect on the teenaged, and very horny, William: a gift of changing himself and, as it turns out, his equally horny brother.  •Cock Growth •Huge Cock •Multicock •Multihead •Incest •Brothers  Added Jan 2013 2 parts 2,738 words 13,064 views 3.8 stars (6 votes)
• Michael and jim by Your Name Here  [  ]    •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Getting Hairy •Incest •Brothers  Added Jul 2006 1,317 words 22,176 views 2.9 stars (7 votes)
• Mind and body by BRK  [  ]  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.  •Always Hard •Cock Growth •Huge Cock •Multicock •Straight to Gay •Muscle Growth •Muscle/Strength •Always Shirtless •Getting Taller •Size Increase •App •Suggestion •Incest •Brothers •Hypnosis •Mind Control •t/t •t/t/t •t/t/t...  Added Jun 2012 Updated Jul 2017 16 parts 66,227 words 145,083 views 4.7 stars (99 votes)
• Misdirected by BRK  [  ]  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.  •Always Hard •Cock Growth •Huge Cock •Self-suck •Size Increase •Incest •Brothers  Added Oct 2009 6 parts 5,664 words 34,181 views 4.8 stars (20 votes)
• Mr. Rainbow Hair by iHeywood  [  ]  In this one-shot story, the lead singer of a gay pop/punk band meets a twink at a concert. They end up fucking.  •Huge Balls •Huge Cock •Hyper Cock •Nipple Emissions •Incest •Brothers •Twins •M/M •M/M/M  Added Sep 2022 3,220 words 1,450 views 4.4 stars (10 votes)
• Musclove, Texas by Max Mann  [  ]  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).  •Cock Growth •Hyper Cock •Hyper Cum •Muscle Growth •Muscle/Strength •Age Difference •First Time/Virgin •Incest •Brothers •Father/Son •Twins •Restraints  Added Sep 2004 9 parts 26,085 words 64,658 views 4.8 stars (48 votes)
• My brother was a teenage muscle freak! by Pump Culture  [  ]  This is a story of how my muscle fetish first got started and how my brother turned himself into a true muscle freak.  •Muscle Growth •Muscle/Strength •Incest •Brothers  Added Nov 2020 3,084 words 9,386 views 4.8 stars (5 votes)
• My brother’s boyfriend by Richard Jasper  [  ]  Hunky, straight Marine Kyle is gobsmacked to find out that his bigger, hotter baby brother has an even bigger, hotter boyfriend!  •Huge Balls •Straight to Gay •Hyper Muscle •Hyper Strength •Muscle Growth •Muscle/Strength •Getting Taller •Size Increase •Incest •Brothers •Hyper Pheromones  Added Feb 2020 5 parts 8,843 words 15,552 views 4.2 stars (10 votes)
• My growth journal by Kaelan  [  ]  It's my 30th birthday... and all of a sudden my body keeps changing. And it's awesome.  •Cock Growth •Huge Cock •Self-suck •Muscle Growth •Muscle/Strength •Gradual Change •Incest  Added Jul 2017 3,692 words 16,959 views 4.8 stars (12 votes)
• My roommate (complete) by LenZelig  [  ]  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.”)  •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Age Difference •First Time/Virgin •Incest •Brothers •Father/Son •Bisexual •Hetero Sex •Dom/Sub •Witch/Warlock/Wizard •Gay Pride •Mind Control •M/F •M/M •M/M/F •M/M/M •M/M/M/... •M/t •t/t  Added Jul 2002 Updated Jun 2021 29 parts 222,742 words 138,683 views 4.6 stars (23 votes)
• My roommate’s soft spot by brazboy  [  ]  Guilherme’s tall, handsome, and muscular roommate seems like the perfect guy, but he has a big secret that not everyone can really accept—not even himself.  •Huge Cock •Multicock •Mouthcock •Incest •Brothers  Added Jul 2021 5 parts 14,413 words 5,794 views 4.9 stars (7 votes)
• My son home on leave by Peterbilt  [  ]  A story of sex between a man and his adult Marine son when he is home on leave.  •Huge Cock •Muscle/Strength •Age Difference •Incest •Father/Son  Added Feb 2017 2 parts 18,403 words 15,452 views 4.7 stars (10 votes)
• My son is worried about his big cock by UnknownGentrifier  [  ]  Andy seeks his father’s advice about whether his cock really is too big, like his friends say it is.  •Huge Cock •Age Difference •Incest •Father/Son  Added Oct 2020 2,194 words 7,134 views 3.5 stars (11 votes)
• My son, the superstud by Max Mann  [  ]  Thom is shocked to hear that his son Rusty has enrolled in a muscle-growth transformation experiment—and it’s already too late to stop him.  •Cock Growth •Huge Cock •Straight to Gay •Muscle Growth •Muscle/Strength •Age Difference •Incest •Father/Son •M  Added Oct 2003 3,842 words 109,705 views 3.9 stars (32 votes)

• Naked morph for ps2 by Male Enhancer  [  ]  Three brothers play a video game that has a direct effect on the people playing it.  •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Size Increase •Incest •Brothers  Added Jun 2013 4 parts 3,180 words 32,539 views 4.5 stars (26 votes)
• Necklace brothers by Levitate  [  ]  A pair of undersized twins use a magical necklace to grow themselves—not realizing that the growth came with a price.  •Muscle Growth •Muscle/Strength •Size Decrease •Size Increase •Incest •Brothers •Twins  Added May 2015 1,423 words 19,476 views 3.0 stars (5 votes)
• The new job by hyperboi  [  ]  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.  •Always Hard •Cock Growth •Huge Cock •Hyper Cock •Hyper Muscle •Muscle Growth •Muscle/Strength •Gradual Change •Size Increase •Incest •Brothers •M/M  Added Aug 2014 8 parts 20,447 words 35,488 views 4.6 stars (40 votes)
• New neighbors by BRK  [  ]  Jimmy is starting to enjoy his first summer with his newly acquired wishpower when a very sexy couple moves in next door. The only trouble is, Jimmy doesn’t immediately recognize the true nature of their relationship, and by the time he does, it’s already too late.  •Huge Cock •Multicock •Age Difference •Incest •Father/Son  Added Jan 2016 Updated Nov 2019 2 parts 11,319 words 17,808 views 4.5 stars (11 votes)
• The new simulation game by hyperboi  [  ]  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.  •Cock Growth •Cockfucking •Huge Cock •Hyper Cock •Straight to Gay •Muscle Growth •Muscle/Strength •Incest •Brothers  Added Mar 2016 5 parts 10,449 words 25,700 views 4.8 stars (20 votes)
• Nick by Anonymous  [  ]    •Huge Cock •Incest •Brothers  Added Apr 2003 1,846 words 21,579 views
• The night shift by Dreamtransformer  [  ]    •Muscle/Strength •Age Difference •Incest •Father/Son  Added Dec 2013 1,239 words 12,433 views
• No strings attached by muscl4life  [  ]  Donny walks in on his roommate, Sebastian, in the midst of his efforts to make himself bigger.  •Cock Growth •Huge Cock •Hyper Cock •Cum inflation •Muscle Growth •Muscle/Strength •Size Increase •Incest •Brothers •Twins •Hypnosis  Added May 2014 3 parts 39,280 words 47,147 views 4.5 stars (23 votes)
• Not just imagination by DarkDjin  [  ]  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.  •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Suggestion •Age Difference •Incest •Father/Son  Added Jun 2014 Updated Jul 2014 2 parts 10,894 words 37,694 views 4.6 stars (36 votes)

• One hot summer by BRK  [  ]  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.  •Always Hard •Cock Growth •Huge Cock •Self-suck •Replication •Other Mental Changes •Muscle Growth •Muscle/Strength •Always Shirtless •Increased Libido •Gradual Change •Voice Deepening •Getting Taller •Giants •Plausible Size Difference •Size Decrease •Size Increase •Getting Hairy •Incest •Brothers •Twins •Nonconsensual change •Body Swap •Shared Body •Fourth of July •Gay Pride •Cannabis •M •M/M •M/M/M •M/M/M/...  Added Jun 2019 Updated Jun 2022 54 parts 118,619 words 57,962 views 4.9 stars (52 votes)
• Overshadowed by Cris Kane  [  ]  Jealous of his jock older brother, gay misfit Lance gets a magical chance to change things.  •Other Mental Changes •Straight to Gay •Transformation •Incest •Brothers  Added Apr 2019 2,658 words 6,903 views 2.6 stars (7 votes)

• Perfectly normal by EdIam  [  ]  John is working on reality-bending science… but perhaps he should vet his employees a little more carefully.  •Always Hard •Other Mental Changes •Straight to Gay •Always Shirtless •Retcon •Incest •Brothers •Father/Son •Nonconsensual change  Added Jan 2021 8,364 words 5,642 views 4.0 stars (7 votes)
• Pool party by FanTCMan  [  ]  Two young men are nervous but excited. They’re about to show off their muscle transformation in front of all the guys at the pool!  •Muscle Growth •Muscle/Strength •Getting Handsomer •Age Difference •Incest •Father/Son •M/M/M/... •M/t •t/t  Added Dec 2002 1,575 words 18,677 views 4.7 stars (6 votes)
• The power of suggestion by BRK  [  ]  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.  •Cock Growth •Huge Cock •Multicock •Replication •Muscle Growth •Muscle/Strength •Size Increase •Retcon •Suggestion •Incest •Brothers •Twins •Series  Added Feb 2009 1,878 words 42,698 views 4.8 stars (36 votes)

• Reality Pack by Thorn  [  ]  What happens when the program you’re working on for school has a downloadable mod? You investigate it of course!  •Cock Growth •Huge Cock •Pec Fucking •Muscle Breast •Muscle Growth •Muscle/Strength •Butt Growth •Belly Growth •Gradual Change •Getting Taller •Plausible Size Difference •Getting Hairy •App •Age Difference •First Time/Virgin •Incest •Brothers •Father/Son •M/M •M/M/M  Added Nov 2020 Updated Feb 2021 15 parts 79,094 words 40,075 views 4.9 stars (31 votes)
• The runner by LenZelig  [  ]  Jake is out for a morning run when he meets up with someone who is more than a man and looking for a different kind of exercise.  •Huge Cock •Straight to Gay •Muscle/Strength •Suggestion •Age Difference •Incest •Brothers •Father/Son •Bisexual •Hetero Sex •Dom/Sub •Series  Added Jun 2020 8,270 words 7,187 views

• The salt by RdyRoger  [  ]  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.  •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Muscle Worship •Increased Libido •Gradual Change •Getting Taller •Size Increase •Tongue Growth •Incest •Brothers •Series  Added Jun 2010 9 parts 35,754 words 79,406 views 4.7 stars (19 votes)
• Sam and Bolt by Alakazam1988  [  ]  Sam’s father, Bolt, shares with his size-hungry son the secrets of becoming truly huge.  •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Nipcocks •Self-suck •Cum inflation •Hyper Cum •Nipple Emissions •Getting Taller •Size Increase •Getting Hairy •Age Difference •Incest •Father/Son •Infectious •M •M/M •M/M/M/...  Added Sep 2016 Updated Dec 2016 11 parts 48,242 words 72,134 views 3.8 stars (52 votes)
• Say cheese and grow by hyperboi  [  ]  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.  •Cock Growth •Huge Cock •Self-suck •Muscle Growth •Muscle/Strength •Gradual Change •Incest •Brothers •t/t •t/t/t  Added Nov 2013 13 parts 29,433 words 37,090 views 4.7 stars (24 votes)
• Scratch-and-win by BRK  [  ]  Sometimes the lottery scratch-off isn’t about money at all.  •Cock Growth •Huge Cock •Multicock •Incest •Twins  Added Nov 2003 2 parts 2,759 words 12,229 views 4.3 stars (6 votes)
• Secret Santa by BRK  [  ]  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.  •Cock Growth •Huge Cock •Multi-abs •Multiarm •Multileg •Multilimb •Three Legs •Replication •Muscle Growth •Muscle/Strength •Always Shirtless •Incest •Brothers •Christmas •Series •M/M •M/M/M/...  Added Dec 2016 3 parts 15,182 words 14,374 views 5.0 stars (12 votes)
• Seeing stars by OneLuckyGuy89  [  ]  12 young, muscular and beautiful men have begun protecting Starlight City. Adam Berry has been having weird dreams lately and has a feeling that his life is about to change.  •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Gay to Straight •Muscle Growth •Muscle Gut •Getting Taller •Size Increase •Getting Hairy •Incest •Twins •Nonconsensual change •Infectious •Merging •Superhero/Supervillain  Added Mar 2020 Updated May 2020 2 parts 8,520 words 8,934 views 4.2 stars (6 votes)
• Sensational summer growth by OneLuckyGuy89  [  ]  Todd and Aaron return home to their hometown of Portland as changed men. Now it’s time for them to change the rest of the town.  •Cock Growth •Multicock •Straight to Gay •Muscle Growth •Man Scent •Butt Growth •Getting Handsomer •Voice Deepening •Getting Taller •Getting Hairy •Age Difference •Incest •Brothers •Father/Son •M/M •M/M/M  Added Apr 2022 Updated May 2022 3 parts 8,409 words 10,634 views
• 17 inches by Unknown  [  ]    •Huge Cock •First Time/Virgin •Incest •Brothers  Added Mar 2009 3,639 words 83,851 views 4.4 stars (20 votes)
• Shirtbusters by TFWizard  [  ]  Jared, Lance, and Lance’s father Ben discover a way to bust out of their shirts, and they can’t get enough of it.  •Muscle Growth •Muscle/Strength •Size Increase •Age Difference •Incest •Father/Son  Added Oct 2005 2 parts 6,769 words 45,698 views 4.1 stars (14 votes)
• The shirtless club by BRK  [  ]  A cute, well-built teenager and his twin friends make a pact to keep their shirts off at all costs.  •Huge Cock •Muscle/Strength •Always Shirtless •Incest •Brothers •Twins  Added Jul 1997 Updated Jul 2010 2 parts 7,620 words 35,767 views 4.6 stars (13 votes)
• Sizemorph by ChangeRedhawk  [  ]    •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Incest •Brothers •Rape  Added Mar 2003 1,235 words 17,981 views
• The ski trip by Allan Cedar  [  ]  A group of multilimb guys get to know each other better in a secluded ski cabin.  •Multicock •Multiarm •Multilimb •Incest •Twins  Added Mar 2013 2 parts 4,768 words 10,460 views
• The smuggler by BRK  [  ]  Ardin is one of the best smugglers in the Seven Realms, and the heist he has planned to steal a valuable heirloom from the unsuspecting (and impossibly handsome) Prince of Kossh should be a piece of cake. What he’s not counting on is finding something else in the Prince’s treasure-room: an artifact evoking a mythical cock-themed beast that brings with it a sexual need so intense Ardin is unsure it can ever be quenched.  •Huge Cock •Hyper Cum •Man Scent •Incest •Brothers •Twins •Fantasy Realm •Series  Added Apr 2021 2 parts 6,395 words 3,002 views 4.6 stars (5 votes)
• The spectacular growing saga by West  [  ]  A collection of brief stories about guys discovering their dream bodies in various ways.  •Cock Growth •Cock Shrinking •Huge Cock •Hyper Cock •Hyper Cum •Multi-abs •Multicock •Multiarm •Multipec •Hyper Strength •Muscle Growth •Muscle Theft •Getting Taller •Size Decrease •Incest •Brothers •Triplets •Infectious •Androids/Cyborgs •M/M •M/M/M  Added Mar 2022 Updated Apr 2022 6 parts 7,557 words 8,514 views 4.5 stars (13 votes)
• Spice by Mr. X and Mad Dog  [  ]  In this epic story, the transformative powers of a certain substance are tested by a couple of very horny guys.  •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Muscle Worship •Man Scent •Gradual Change •Voice Deepening •Size Increase •Getting Hairy •Age Difference •Incest •Father/Son •Gay Pride  Added Oct 2009 Updated Nov 2019 50 parts 221,027 words 203,346 views 4.3 stars (58 votes)
• Spin the bottle by EdIam  [  ]  Matty lives in a pretty homophobic area with pretty homophobic friends, but maybe a magically-enhanced game of spin the bottle can help loosen them up?  •Huge Cock •Straight to Gay •Incest •Father/Son •Dom/Sub  Added Aug 2021 9,825 words 3,952 views 3.8 stars (5 votes)
• Sudden changes by BRK  [  ]  Ike woke up with a too-big hard-on that won’t quit and a constant, building need to orgasm that didn’t subside even when he came. And none of that changed the fact that he had to go to work. How the heck would he deal with this?  •Always Hard •Cock Growth •Huge Cock •Muscle Growth •Increased Libido •Voice Deepening •Getting Taller •Getting Hairy •First Time/Virgin •Incest •Twins •M/M/M  Added Dec 2021 Updated Apr 2022 2 parts 8,094 words 12,746 views 4.9 stars (17 votes)
• Suggestions by Jack the Mindbender  [  ]  Jack is surprised by how quickly his hot stepfather goes from a closed book to jerking off right in front of him…  •Huge Cock •Suggestion •Age Difference •Incest •Father/Son •Mind Control  Added Dec 2018 2,749 words 8,968 views 4.4 stars (10 votes)

• Target practice by Cris Kane  [  ]  Jake and Mark spot a pedestrian who would make a nice addition to the frat.  •Replication •Other Mental Changes •Muscle Growth •Muscle/Strength •Transformation •Incest •Twins •Nonconsensual change  Added Nov 2019 1,635 words 5,605 views
• Ten ways to get big and strong by BRK  [  ]  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.  •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Size Increase •Incest •Brothers  Added Jun 2016 Updated Sep 2016 4 parts 13,105 words 23,276 views 4.8 stars (20 votes)
• Three brothers by Wawa  [  ]  Three brothers get infected with a digital virus that grows them to their true selves.  •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Hyper Cum •Pec Fucking •Muscle Breast •Muscle Growth •Muscle Gut •Belly Growth •Giants •Size Increase •Getting Fatter •Incest •Brothers •Nonconsensual change •M/M •M/M/M  Added May 2022 1,702 words 7,748 views
• Three-legged bros by BRK  [  ]  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.  •Multi-abs •Multicock •Multileg •Multilimb •Three Legs •Incest •Brothers  Added May 2020 3,562 words 3,909 views 4.9 stars (7 votes)
• To a tee by Cris Kane  [  ]  Teddy is amazed to see how much his older brother has grown since going away to college.  •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Transformation •Getting Taller •Incest •Brothers  Added Dec 2019 2,189 words 8,769 views
• Touch by BRK  [  ]  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.  •Huge Cock •Other Mental Changes •Muscle/Strength •Always Shirtless •Incest •Brothers •M/M •M/M/M  Added Mar 2019 Updated Aug 2019 5 parts 31,177 words 20,580 views 4.8 stars (34 votes)
• Toy story by LenZelig  [  ]  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.  •Muscle Growth •Muscle/Strength •Age Difference •Incest •Father/Son •Twins •Androids/Cyborgs •Space Travel •M/M •M/M/M/... •M/t •t/t  Added Jul 2002 2 parts 6,947 words 27,763 views 5.0 stars (25 votes)
• A true Villanueva by Architect of Men  [  ]  Austin knows his adopted family of Latino hunks truly loves him, but he can’t help feeling like he doesn’t quite belong. Fortunately, Dad Miguel always knows how to make things better.  •Muscle Growth •Race/Ethnicity Change •Getting Hairy •Incest •M/M  Added Jan 2022 1,251 words 3,861 views 4.8 stars (9 votes)
• Tuesday by BRK  [  ]  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.  •Extra digits •Multi-abs •Multicock •Multiarm •Multilimb •Multipec •Replication •Stretchy •Incest •Twins •Body Swap •M/M •M/M/M/...  Added May 2003 Updated May 2021 7 parts 13,431 words 27,614 views 5.0 stars (11 votes)
• Twin studs by Anonymous  [  ]    •Huge Cock •Multicock •Multiarm •Multilimb •Age Difference •First Time/Virgin •Incest •Brothers •Father/Son •Twins  Added Jul 2014 3 parts 42,539 words 15,394 views 4.0 stars (22 votes)
• Two brothers by Richard Jasper  [  ]  Will and Chris are brothers, four years and one week apart. They’ve always been close but then Will persuades his parents to buy him a weight set and their true love—muscle—is unleashed! This story has two endings, “No, They Don’t” and “Yes, They Do” (make of that what you will!).  •Muscle Growth •Muscle/Strength •Gradual Change •Incest •Brothers  Added Oct 2020 7 parts 7,269 words 4,809 views

• Ultimate muscle by Ultra-Muscle  [  ]  Philip gets injected with what he wants most—something that will make him a big muscle man like his dad.  •Huge Cock •Muscle Growth •Muscle/Strength •Age Difference •Incest •Father/Son  Added Dec 2013 1,418 words 26,830 views 3.6 stars (7 votes)
• Uncle C by Portowulf  [  ]  Charles finds a trinket at a small store in the city that brings unexpected changes.  •Cock Growth •Straight to Gay •Muscle Growth •Increased Libido •Size Increase •Age Progression •Age Regression •Age Difference •First Time/Virgin •Incest •M/M  Added Jun 2020 3,028 words 6,358 views
• An unexpected inflation by UberPump  [  ]  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.  •Cock Growth •Cock Pumping •Cockfucking •Ball Growth •Huge Balls •Huge Cock •Hyper Cock •Cum inflation •Hyper Cum •Public Orgasm •Straight to Gay •Immobility •Muscle Growth •Public Nudity •Inflation •App •Incest •Brothers •Bisexual •Nonconsensual change •M/M •M/M/F •M/M/M  Added Apr 2020 Updated Jul 2022 35 parts 77,246 words 77,168 views 4.8 stars (43 votes)

• Visiting home by Wicked  [  ]  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.  •Huge Cock •Muscle Growth •Muscle/Strength •Size Increase •Age Difference •Incest •Father/Son •Infectious  Added Jan 2016 Updated May 2016 2 parts 6,753 words 36,555 views 4.7 stars (24 votes)

• Werequeer by Pfieffer  [  ]  A dad helps his son through his first transformation into a WereQueer.  •Cock Growth •Huge Balls •Hyper Cock •Hyper Cum •Transformation •Age Difference •Incest •Father/Son  Added Apr 2004 2,426 words 29,105 views 4.9 stars (18 votes)
• Werewolf High by BRK  [  ]  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.  •Always Hard •Cock Growth •Huge Cock •Hyper Cock •Extra digits •Multicock •Multiarm •Multilimb •Replication •Muscle Growth •Muscle/Strength •Size Increase •Incest •Twins •Triplets •Werewolves  Added Jul 2014 Updated Dec 2015 3 parts 12,574 words 33,682 views 4.5 stars (28 votes)
• What a dear deer boy by Thatbadwriter  [  ]  Eric’s undersized brother Jayden finally hits his growth spurt—then keeps hitting it.  •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Hyper Cum •Butt Growth •Giants •Plausible Size Difference •Size Increase •Human to Animal/Anthro •First Time/Virgin •Incest •Brothers •Hyper Pheromones •Anthro/Furry  Added Feb 2021 Updated Mar 2021 5 parts 12,430 words 18,505 views 5.0 stars (14 votes)
• The Wizard of Hot by hyperboi  [  ]  A young man’s difficult life on a struggling Kansas farm takes a sudden turn when a cyclone appears, taking him and his brother far from home to another place altogether.  •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Hyper Cum •Multicock •Multiarm •Multileg •Multilimb •Three Legs •Muscle/Strength •Detachable •Giants •Plausible Size Difference •Size Increase •Incest •Brothers •Anthro/Furry •Witch/Warlock/Wizard •Fantasy Realm •Supernatural  Added Apr 2021 Updated Jul 2021 10 parts 38,884 words 15,668 views 4.6 stars (14 votes)
• Woody by BRK  [  ]  Woody’s been searching for his other half, but he doesn’t realize quite what that means, or what changes will happen when they meet.  •Always Hard •Multicock •Size Increase •Incest •Brothers •Twins  Added Aug 2013 2 parts 4,705 words 13,735 views
• Wordplay by BRK  [  ]  Pavel makes a case for his fellow boarding school students that there are a lot of body-related expressions in English, though his classmates aren’t aware of exactly how Pavel is proving his point.  •Cock Growth •Huge Cock •Multi-abs •Multicock •Multiarm •Multilimb •Muscle Growth •Muscle/Strength •Incest •Twins  Added Aug 2015 6,907 words 14,806 views

• Y-M-C-Gay by M.M.69  [  ]  An ordinary guy with an extraordinary ability gets the guy of his dreams.  •Always Hard •Cock Growth •Huge Balls •Huge Cock •Public Orgasm •Extra digits •Multi-abs •Multicock •Multihead •Boytaur •Four Legs •Multiarm •Multileg •Multilimb •Three Legs •Multitongue •Multitorso •Replication •Straight to Gay •Muscle Growth •Public Nudity •Getting Handsomer •Gradual Change •Getting Taller •Retcon •Suggestion •Incest •Father/Son •M/M •M/M/M  Added Nov 2021 2,646 words 5,994 views 4.7 stars (9 votes)

• The Zeke chronicles by Sean Reid Scott  [  ]  Zeke, an 18 year-old gorgeous stud, was already big before some very special visitors seem to have given him a special ability to grow and grow, bigger and bigger, stronger and stronger.  •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Muscle Worship •Getting Taller •Age Difference •Incest •Father/Son •Dom/Sub •M/M •M/M/M  Added Jul 2013 Updated May 2017 7 parts 27,675 words 43,981 views 4.4 stars (18 votes)