Metabods - Stories tagged Muscle Growth - Metabods Erotic Story Archive

Latest update (19 September): • “Return of the cocksucking fleshsock” • “Jocktaur pledge” • “Remodel”, Part 2 • plus lots more!
Next update: 3 October. Submissions welcome.

Muscle Growth

When your muscles are growing bigger. Especially relevant if the character doesn’t have much musculature to start with. This can involve muscles being grown conventionally (i.e., hard work at the gym), but usually there’s something more going on that gives the growth a push.

Compare Muscle, which can be just about having big muscles, and Size Growth, which involves getting bigger overall.

Kinds of “Muscle Growth” stories include:

Immobility

Other tags that also fall under the category “Muscle/Strength”: Hyper Strength, Muscle Breast, Muscle Theft, Muscles.

Stories found: 857.

Something missing? We’re always looking to improve the way our stories are tagged. If you know of a story that should be added to this page, please go to the story page and use the tag suggestion feature—the link is directly under the list of tags.

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Newest Chapters: Muscle Growthtap bar to showtap bar to hide

1. Tit hype, Part 1 by Writ Bro CGrow Cock MusBr MGrow Between jobs? How about £5000 in three weeks to take part in medical trials? Who knows, you might even like the side effects.

2020-09-19

2. Neighbor kids, Part 1 by Richard Jasper Grad MGrow Musc The continuing adventures of Jamie and Stevie, now living on their own. Jamie’s spectacular growth never slows down! 2020-09-19

3. Resolution, Parts 1-8 by Richard Jasper CGrow Taller Grad Cock HyCock Strong MGrow Musc New Years Grow Skimpy young Ben, stuck for Christmas in a bumfuck town on the high plains, is astounded that Max, the bartender keeping him company, is a total musclebear stud! He resolves to come back in a year a bigger and better man and with Max’s encouragement does just that.

2020-09-19

4. Retrospective, Parts 1-3 by Richard Jasper CGrow Taller Cock HyCock HMusc MGrow Musc Grow Roger Harris has an unusual condition—every year, year in and year out, he is a little bit taller, a little bit more muscular, and quite a bit stronger. What’s not to love? But try it for 20+ years! It makes for a lonely existence until he meets a young man, David, with the same condition!

2020-09-19

5. The rider, Part 1 by Richard Jasper Swap Strong MGrow Musc In the near future, Immersive Reality allows you to directly connect to another person’s sensorium, experiencing all of their senses. At the end of his life, Roger Jessup decides it’s time to go out with a bang. It’s one helluva ride!

2020-09-19

6. Next level love: Location enabled, Part 1 by Eclipse CGrow Cock Mental MGrow Series Mateo’s been feeling small lately, but his new app is all he needs for a boost. 2020-09-19

7. Finding Owen, Part 5 by BRK Bro Hair Taller Cock MGrow Musc Grow Wbear Were Series Owen and the brothers return to the forest to find that things have changed while they were away on the neverwhere beach. Specifically, they have changed.

2020-09-05

8. My quarantine get in shape plan, Part 10 by Dream Big CGrow Grad Scent MGrow Musc Terry and Sebastian grow more attracted to each other. Terry is also growing period, all over, and when he tries to rein in what’s happening to him he’s alarmed to discover it might not be possible.

2020-09-05

9. My quarantine get in shape plan, Parts 11-21 by Dream Big CGrow Grad Scent MGrow Musc Terry and Sebastian grow more attracted to each other. Terry is also growing period, all over, and when he tried to rein in what’s happening to him he’s alarmed to discover it might not be possible.

2020-09-05

10. Web cam abuse, Part 1 by Tereshky Belly CGrow Taller Cock Infl MusBr MGrow Musc NipCum PSD Grow Two enterprising college jocks think they can pay their way through school by showing off their ripped bods as part of a web cam business. When a company comes along offering them a ton of money for an hour’s work, they learn that when an opportunity sounds too good to be true, you should always read the fine print. Stretch Studios isn’t kidding when they say they’re not responsible for any “alterations” to their employees.

2020-09-05

11. Side effects, Part 1 by TheSizeKing CGrow Cock HyCock Cum MGrow Musc Stephen went to the doctor for typical flu symptoms, but the medication he was given began to give him some unexpected side effects.

2020-09-05

12. The ride, Part 1 by Cris Kane CGrow Mental MGrow Nonc Shift Tf A benevolent shapeshifter hitches a ride with a redneck in need of a change. 2020-09-05

13. The new model, Parts 1-4 by Richard Jasper CGrow Grad Cock Strong MGrow Musc Sixty-year-old Roger Jespersen no longer believes his lifelong bodybuilding goals are achievable. On the other hand, his new therapist, Dr. Haddad, possesses unusual talents. Thanks to his efforts Roger’s inner Mass Monster is unleashed.

2020-09-05

14. The Nubian prince, Parts 1-5 by Richard Jasper AgeDiff Grad Cock MGrow Musc 25-year-old Rob is 5’10” and 160 pounds of Drop Dead Gorgeous. They don’t call him “The Nubian Prince” for nothing! So why’s he hiring a personal trainer at Solstice, the hottest gay gym in town? Because he’s bored. His only requirement: He doesn’t want to get any bigger!

2020-09-05

15. The porn star, Parts 1-3 by Richard Jasper CGrow Grad Cock MGrow Musc What do you do with a gigantic dick and the ability to slab on hundreds of pounds of muscle? Make movies, of course!

2020-09-05

16. Power couple, Parts 1-5 by Richard Jasper Grad Cock MGrow Musc Roger and Bruce have been best friends since age 13. They go off to different high schools and Roger gets into lifting, thereby sealing their destinies.

2020-09-05

17. Be careful what you wish for, Part 6 by Tereshky AgeDown CGrow Balls Cock Immob MGrow Musc Nonc 2Gay Jack relives a memory from a time before the wishes began, when he showed a young GI that young throbbing bodies were meant to be changed and invented a new meaning to the phrase “go fuck yourself”. Meanwhile his plans continue to take shape. Who is his mysterious counterpart who seems every bit his match and why is he obsessed with a young stud that he’s powerless to change.

2020-08-22

18. The perfect fit, Part 4 by TheSizeKing CGrow Taller Cock HyCock Cum MGrow Musc The final two chapters of Kostas’ control over Taylor’s exceptional growth. 2020-08-22

Most Viewed: Muscle Growthtap bar to showtap bar to hide

1. Justin (the bigger the better) by Giant Worshipper (15 parts) CGrow Giant Cock HyCock Strong MGrow Musc Grow 2Gay A young man starts growing, and growing. He finds he likes it a lot. Added Nov 2009 • 99.1K words

296,637 views

2. Max’s wish by Bulge101 (11 parts) CGrow Cock Infect MGrow Musc Grow 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 • 24.6K words

245,483 views

3. Above average by Ziel (28 parts) CGrow Cock HyCock Cum HMusc MGrow Musc 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 • 130.4K words

199,158 views

4. Spice by Mr. X and Mad Dog (50 parts) AgeDiff CGrow Dad Hair Grad Cock Scent MGrow Musc Grow In this epic story, the transformative powers of a certain substance are tested by a couple of very horny guys. Added Oct 2009 • Updated Nov 2019 • 221.0K words

166,736 views

5. Jason’s big problem by Joven (49 parts) Bro CGrow Taller Balls Cock HyCock Cum MGrow Musc Grow 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. Added Oct 2013 • Updated Nov 2017 • 114.7K words

144,005 views

6. All good things by Anon Amon (100 parts) Bro CGrow CumInf Balls Cock HyCock Cum Immob Infect MGrow Musc NipCum 2Gay Twins 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 Aug 2019 • 115.4K words

137,412 views

7. Puberty is a bitch by Lover Boy 2 (11 parts) CGrow Grad Cock HyCock MGrow Grow Added Sep 2009 • 14.6K words
128,712 views

8. Mind and body by BRK (16 parts) Hard Bro CGrow Taller Cock Hypno Mind XCock MGrow Musc Grow 2Gay Sugg 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 • 66.2K words

120,801 views

9. Bigger issues by muscl4life (6 parts) Hard CGrow Cock HyCock XAbs MGrow Musc Grow 2Gay Series Thanks to Kyle, Sean discovered his serum works better than he expected… And now his freaking muscular lover each time is more intoxicated with his newly found POWER, and can such difference of muscular capacity make the couple apart? Added Dec 2013 • 47.0K words

109,047 views

10. Empire by LenZelig (38 parts) AgeDiff Alien Beast Bi Bro CGrow Dad Virgin Taller Het Cock Mind MGrow Musc Nonc Self Slave Share Grow Space 2Gay Tksg Twins 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 • 347.2K words

106,445 views

11. My son, the superstud by Max Mann AgeDiff Dad MGrow Musc 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. Added Oct 2003 • 3.8K words

99,848 views

12. Huge changes: Book one by RdyRoger CGrow Hallow Cock MGrow Musc Grow 2Gay Series Todd’s love for his straight best friend turns them both into their fantasies of each other—with a little help from an old lady at a Halloween costume shop. Added Apr 2012 • Updated Dec 2017 • 5.9K words

99,471 views

13. My roommate by LenZelig (9 parts) AgeDiff Bi Bro CGrow Dom Dad Virgin Het Cock Mind MGrow Musc Series Bill’s hot adventures with his irresistible sex-god of a roommate, Andy Wang. Added Jul 2002 • Updated Oct 2019 • 113.0K words

95,941 views

14. The dudes by BRK (7 parts) Hard CGrow Cock MGrow Musc Retcon Self Grow Sugg 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 • 15.9K words

95,631 views

15. Baby brother by Shawn D. Stewart Bro CGrow Taller MGrow Musc "Kev, did you see a glass here?” “Whoa, man, was that yours? Sorry… I was really thirsty…” “You drank it!?” Aaaaand off we go! Added Mar 2003 • 2.9K words

93,996 views

16. Teen growth by Chamelion123 MGrow Musc Added Jul 2002 • 7.4K words
93,832 views
17. Morphed muscle tit freaks by TitMorpher (3 parts) MusBr MGrow Musc NipCum Added Jan 2011 • Updated Jan 2012 • 7.9K words
90,958 views
18. Muscle milk tit freaks by TitMorpher (9 parts) MusBr MGrow Musc NipCum Images Added Sep 2011 • Updated Jun 2012 • 27.1K words
90,487 views
19. Forced growth by hyperboi (5 parts) CGrow Cock HyCock MGrow Musc Nonc Added Oct 2013 • 6.4K words
87,126 views

20. Changing Nick by BRK (16 parts) Hard Cock Merg XAbs XArm XCock XHead XLeg XLimb XPec MGrow Musc Nonc Rep Retcon Grow Stack 2Gay 3Legs 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 • 59.1K words

86,985 views

21. The brothers by FanTCMan (8 parts) Addict Hard Bro CGrow Hair Grad Cock MGrow Musc 2Gay Cory Callahan and his three sibs participate in a secret program, resulting in more muscles, body hair, cock size, and horniness. Added Mar 2003 • 22.6K words

83,642 views

22. Lumberjacked by Krisiar (4 parts) Addict CGrow Hair Cock HyCock XAbs MGrow Musc NipCum Self 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 • 12.1K words

76,669 views

23. More than expected by LennoxBear (5 parts) CGrow Virgin Hair Balls Cock Infect MusBr MGrow Musc NipCum Nonc Added Jul 2002 • 20.4K words
73,784 views

24. True muscle god by mf81 (3 parts) CGrow Viol Balls Cock MGrow Musc An encounter with a strange artifact from the ancient Aegean leads Richard to a divine encounter. Added Mar 2006 • Updated Feb 2011 • 7.7K words

70,702 views

25. Becoming the ultimate man by musclestory Hair MGrow Musc Added Aug 2003 • 4.6K words
70,141 views

26. Oh man by BRK (5 parts) CGrow Cock XArm XCock XLimb MGrow Musc Rep Retcon Self A simple website called your-body-like-that dot com lets you imagine how you’d look with a whole new body. Only it doesn’t stop at imagination. Added Jul 2010 • Updated Nov 2017 • 13.3K words

67,114 views

27. Supermen by Also Known As (9 parts) CGrow Virgin Fly HyCock Pher XCock MGrow Musc Series Todd agrees to be the first human subject for a muscle growth serum, little knowing how massive the effects would be, for himself and everyone else. Added Oct 2002 • Updated Sep 2018 • 76.8K words

66,993 views

28. The salt by RdyRoger (9 parts) Bro CGrow Taller Grad Cock MGrow Musc Grow 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 • 35.8K words

65,331 views

29. The hulk pill by JayPat (5 parts) Cock Infect MGrow Musc Nano Grow The only thing weirder than your buddy Boz offering you a “hulk pill” would be for it to actually work. Added Oct 2012 • 29.5K words

64,586 views

30. Brad’s big change by FanTCMan (5 parts) MGrow Musc Added Dec 2002 • 16.5K words
61,873 views

Most Viewed Last 7 Days: Muscle Growthtap bar to showtap bar to hide

1. Tit hype by Writ Bro CGrow Cock MusBr MGrow Between jobs? How about £5000 in three weeks to take part in medical trials? Who knows, you might even like the side effects. Added Sep 2020 • 6.4K words

1,985 views

2. Retrospective by Richard Jasper (3 parts) CGrow Taller Cock HyCock HMusc MGrow Musc Grow Roger Harris has an unusual condition—every year, year in and year out, he is a little bit taller, a little bit more muscular, and quite a bit stronger. What’s not to love? But try it for 20+ years! It makes for a lonely existence until he meets a young man, David, with the same condition! Added Sep 2020 • 2.9K words

1,520 views

3. Resolution by Richard Jasper (8 parts) CGrow Taller Grad Cock HyCock Strong MGrow Musc New Years Grow Skimpy young Ben, stuck for Christmas in a bumfuck town on the high plains, is astounded that Max, the bartender keeping him company, is a total musclebear stud! He resolves to come back in a year a bigger and better man and with Max’s encouragement does just that. Added Sep 2020 • 6.6K words

1,436 views

4. Next level love: Location enabled by Eclipse CGrow Cock Mental MGrow Series Mateo’s been feeling small lately, but his new app is all he needs for a boost. Added Sep 2020 • 6.7K words

1,389 views

5. Neighbor kids by Richard Jasper Grad MGrow Musc The continuing adventures of Jamie and Stevie, now living on their own. Jamie’s spectacular growth never slows down! Added Sep 2020 • 3.1K words

1,347 views

6. Finding Mark by nightwolf285 (11 parts) CGrow Cock MGrow Musc Grow 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 • 28.6K words

924 views

7. Freshman dorm by OMGhi2U (4 parts) CGrow Cock MGrow Musc Alex’s roommate seems hot enough to start with. And then his pecs start getting bigger. Added Sep 2010 • Updated Sep 2020 • 12.4K words

669 views

8. Spice by Mr. X and Mad Dog (50 parts) AgeDiff CGrow Dad Hair Grad Cock Scent MGrow Musc Grow In this epic story, the transformative powers of a certain substance are tested by a couple of very horny guys. Added Oct 2009 • Updated Nov 2019 • 221.0K words

597 views

9. The rider by Richard Jasper Swap Strong MGrow Musc In the near future, Immersive Reality allows you to directly connect to another person’s sensorium, experiencing all of their senses. At the end of his life, Roger Jessup decides it’s time to go out with a bang. It’s one helluva ride! Added Sep 2020 • 6.5K words

523 views

10. Justin (the bigger the better) by Giant Worshipper (15 parts) CGrow Giant Cock HyCock Strong MGrow Musc Grow 2Gay A young man starts growing, and growing. He finds he likes it a lot. Added Nov 2009 • 99.1K words

517 views

11. Side effects by TheSizeKing CGrow Cock HyCock Cum MGrow 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 • 2.9K words

456 views

12. Changes in stages by Writ Bro (3 parts) CGrow Cock Lycra MGrow Musc That box of clothes in the attic of your new rental house? Don’t pass them off to Goodwill just yet. Added Oct 2010 • Updated Jun 2011 • 14.3K words

439 views

13. Transform: Muscle City by Also Known As (21 parts) Hard CGrow Cock Infect XCock MGrow Musc Grow 2Gay Series Series Emotionally, the Muscle Club has become a community of transformed men who are farm beyond normal. Now is the time to make it a literal community all its own—a city of transformed muscle. Added Jan 2014 • 120.0K words

416 views

14. Web cam abuse by Tereshky Belly CGrow Taller Cock Infl MusBr MGrow Musc NipCum PSD Grow Two enterprising college jocks think they can pay their way through school by showing off their ripped bods as part of a web cam business. When a company comes along offering them a ton of money for an hour’s work, they learn that when an opportunity sounds too good to be true, you should always read the fine print. Stretch Studios isn’t kidding when they say they’re not responsible for any “alterations” to their employees. Added Sep 2020 • 4.3K words

362 views

15. The challenge by BRK CGrow Cock MGrow Musc 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 • 3.0K words

361 views

16. All good things by Anon Amon (100 parts) Bro CGrow CumInf Balls Cock HyCock Cum Immob Infect MGrow Musc NipCum 2Gay Twins 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 Aug 2019 • 115.4K words

354 views

17. My quarantine get in shape plan by Dream Big (21 parts) CGrow Grad Scent MGrow Musc 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 Sep 2020 • 15.5K words

289 views

18. Above average by Ziel (28 parts) CGrow Cock HyCock Cum HMusc MGrow Musc 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 • 130.4K words

269 views

19. Jason’s big problem by Joven (49 parts) Bro CGrow Taller Balls Cock HyCock Cum MGrow Musc Grow 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. Added Oct 2013 • Updated Nov 2017 • 114.7K words

244 views

20. Chuck, the size thief by spacevlad (16 parts) Absorb Viol Fat Giant MGrow Gut MTheft Musc Nonc PSD Grow Chuck, a middling-sized construction worker who wishes he were bigger, finds a way to grow huge. Added Jun 2017 • Updated Dec 2017 • 42.1K words

226 views

21. Max’s wish by Bulge101 (11 parts) CGrow Cock Infect MGrow Musc Grow 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 • 24.6K words

224 views

22. The porn star by Richard Jasper (3 parts) CGrow Grad Cock MGrow Musc What do you do with a gigantic dick and the ability to slab on hundreds of pounds of muscle? Make movies, of course! Added Sep 2020 • 3.1K words

218 views

23. The perfect fit by TheSizeKing (5 parts) CGrow Taller Cock HyCock Cum MGrow Musc When someone can grow you to whatever size you want, make sure they know how big you want to be. Otherwise things can go a little overboard. Added Jun 2020 • Updated Aug 2020 • 14.4K words

210 views

24. The ride by Cris Kane CGrow Mental MGrow Nonc Shift Tf A benevolent shapeshifter hitches a ride with a redneck in need of a change. Added Sep 2020 • 8.5K words
203 views

25. The brothers by FanTCMan (8 parts) Addict Hard Bro CGrow Hair Grad Cock MGrow Musc 2Gay Cory Callahan and his three sibs participate in a secret program, resulting in more muscles, body hair, cock size, and horniness. Added Mar 2003 • 22.6K words

202 views

26. Finding Owen by BRK (5 parts) Bro Hair Taller Cock MGrow Musc Grow Wbear Were 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 Sep 2020 • 36.3K words

196 views

27. Damien by bulkscribe (3 parts) Belly Fat Taller MGrow PSD Grow 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 • 11.4K words

194 views

28. My roommate by LenZelig (9 parts) AgeDiff Bi Bro CGrow Dom Dad Virgin Het Cock Mind MGrow Musc Series Bill’s hot adventures with his irresistible sex-god of a roommate, Andy Wang. Added Jul 2002 • Updated Oct 2019 • 113.0K words

188 views

29. His brother drains his manhood by Ballmeat Bro CGrow CShr MGrow MTheft Musc Nonc A younger brother drains his big, strong, overconfident older brother of his cock, balls and muscle. Added Jan 2018 • 2.6K words

187 views

30. Mind and body by BRK (16 parts) Hard Bro CGrow Taller Cock Hypno Mind XCock MGrow Musc Grow 2Gay Sugg 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 • 66.2K words

173 views

Highest Rated: Muscle Growthtap bar to showtap bar to hide

1. grUV by quickquezzed CGrow Cock HyCock MGrow Musc Self Grow 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 • 5.9K words

30,958 views

2. Mind and body by BRK (16 parts) Hard Bro CGrow Taller Cock Hypno Mind XCock MGrow Musc Grow 2Gay Sugg 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 • 66.2K words

120,801 views

3. The brothers by FanTCMan (8 parts) Addict Hard Bro CGrow Hair Grad Cock MGrow Musc 2Gay Cory Callahan and his three sibs participate in a secret program, resulting in more muscles, body hair, cock size, and horniness. Added Mar 2003 • 22.6K words

83,642 views

4. Alpha House by NBCK99 (3 parts) CGrow Cock Pher MGrow Musc 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 • 11.9K words

47,705 views

5. All good things by Anon Amon (100 parts) Bro CGrow CumInf Balls Cock HyCock Cum Immob Infect MGrow Musc NipCum 2Gay Twins 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 Aug 2019 • 115.4K words

137,412 views

6. Above average by Ziel (28 parts) CGrow Cock HyCock Cum HMusc MGrow Musc 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 • 130.4K words

199,158 views

7. My roommate by LenZelig (9 parts) AgeDiff Bi Bro CGrow Dom Dad Virgin Het Cock Mind MGrow Musc Series Bill’s hot adventures with his irresistible sex-god of a roommate, Andy Wang. Added Jul 2002 • Updated Oct 2019 • 113.0K words

95,941 views

8. Centurion of light by Ravine Mountain (12 parts) CGrow Demons Cock HyCock Cum XAbs MGrow Musc NipC NipCum Grow Twins 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 • 38.2K words

46,815 views

9. Toy story by LenZelig (2 parts) AgeDiff Andr Dad MGrow Musc Space Twins 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 • 6.9K words

22,327 views

10. Shift by NBCK99 (5 parts) CGrow Cock HyCock XArm MGrow 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 • 13.6K words

34,594 views

11. Bottom mega-alfa by Jerkoffcentral (8 parts) CGrow Dom Hair Cock MGrow Musc Nonc Grow 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 • 21.5K words

56,743 views

12. Magnetic magic by Squidy (6 parts) CGrow Cock MGrow Musc Josh discovers his new roommate, Jack, has a powerful effect on him—especially his cock. Added Dec 2014 • Updated Sep 2016 • 13.2K words

41,844 views

13. Justin (the bigger the better) by Giant Worshipper (15 parts) CGrow Giant Cock HyCock Strong MGrow Musc Grow 2Gay A young man starts growing, and growing. He finds he likes it a lot. Added Nov 2009 • 99.1K words

296,637 views

14. True muscle god by mf81 (3 parts) CGrow Viol Balls Cock MGrow Musc An encounter with a strange artifact from the ancient Aegean leads Richard to a divine encounter. Added Mar 2006 • Updated Feb 2011 • 7.7K words

70,702 views

15. The revisualizer by BRK (3 parts) Hard CGrow Hair Cock HyCock MGrow Musc NipC NipCum Nonc Self Grow 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 • 10.5K words

31,317 views

16. Spice by Mr. X and Mad Dog (50 parts) AgeDiff CGrow Dad Hair Grad Cock Scent MGrow Musc Grow In this epic story, the transformative powers of a certain substance are tested by a couple of very horny guys. Added Oct 2009 • Updated Nov 2019 • 221.0K words

166,736 views

17. Tiger troubles by Meddler Incs (2 parts) Fur CGrow Cock MGrow Musc 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 • 5.8K words

21,685 views

18. Musclove, Texas by Max Mann (9 parts) AgeDiff Bro CGrow Dad Virgin HyCock MGrow Musc Bond Twins 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 • 26.1K words

52,466 views

19. Empire by LenZelig (38 parts) AgeDiff Alien Beast Bi Bro CGrow Dad Virgin Taller Het Cock Mind MGrow Musc Nonc Self Slave Share Grow Space 2Gay Tksg Twins 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 • 347.2K words

106,445 views

20. At the cafeteria by BRK (3 parts) CGrow Cock Immort Infect XCock MGrow Musc Sugg 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 • 8.4K words

22,546 views

21. Public relations by Maximilian (18 parts) CGrow Viol Hair Taller Giant Cock HyCock Cum MGrow Gut Musc PSD Bond Shr Grow 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 • 125.0K words

49,958 views

22. Drawn together by Johnny29 (7 parts) Cock MGrow 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 • 13.9K words

20,946 views

23. Not just imagination by DarkDjin (2 parts) AgeDiff CGrow Dad Cock MGrow Musc Sugg 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 • 10.9K words

30,575 views

24. Fortitude by BRK (3 parts) CGrow Cock MGrow Musc Grow Space 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 • 9.0K words

31,249 views

25. Mutant by Marquis de Rent CGrow Giant Cock HyCock Immob MGrow Musc Grow 2Gay 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 • 4.2K words

31,398 views

26. Under control by Alakazam1988 (5 parts) CGrow Taller Grad Balls Cock MGrow Musc Grow 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 • 22.1K words

15,316 views

27. From the files of the Magic Misuse Office by BRK (4 parts) CGrow Cock Merg XArm XCock XHead XLimb XTorso MGrow Rep SocMed 2Gay Tf Twins 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 • 13.9K words

10,855 views

28. The power of suggestion by BRK Bro CGrow Cock XCock MGrow Musc Rep Grow Sugg 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 • 1.9K words

37,155 views

29. Second puberty by JayPat (15 parts) Bi CGrow Viol Cock Pher MGrow Musc Grow 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 • 91.5K words

53,940 views

30. Hollyville by Tereshky (9 parts) CGrow Horror Balls Cock Cum XAbs XArm XLimb XPec MGrow Musc Rep Grow Stack Tent Tf Wings 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 • 44.0K words

12,362 views

Longest: Muscle Growthtap bar to showtap bar to hide

1. Empire by LenZelig (38 parts) AgeDiff Alien Beast Bi Bro CGrow Dad Virgin Taller Het Cock Mind MGrow Musc Nonc Self Slave Share Grow Space 2Gay Tksg Twins 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 • 347.2K words

106,445 views

2. Spice by Mr. X and Mad Dog (50 parts) AgeDiff CGrow Dad Hair Grad Cock Scent MGrow Musc Grow In this epic story, the transformative powers of a certain substance are tested by a couple of very horny guys. Added Oct 2009 • Updated Nov 2019 • 221.0K words

166,736 views

3. Transform: New Blood by Also Known As (47 parts) Hard CGrow Virgin Fly Cock Infect Scent XCock MGrow Musc Self Grow Series The formula Carlos developed, Transform, has made him and his friends into veritable gods. Soon their numbers will be growing, thanks in part to a video featuring a guy known only as Self-Suck Sam. Added Jan 2014 • 188.4K words

29,317 views

4. Transform by Also Known As (35 parts) CGrow Fly Cock Pher Infect XCock MGrow Musc 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 • Updated Sep 2018 • 131.9K words

39,768 views

5. Above average by Ziel (28 parts) CGrow Cock HyCock Cum HMusc MGrow Musc 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 • 130.4K words

199,158 views

6. Side effects 2000 by Braun1 and Z (31 parts) Hard CGrow Cock HyCock Infect MGrow Musc Self Grow Mike and Jan begin an odyssey of muscle, growth, transformation, sex, and love. Added Jul 2002 • Updated Sep 2018 • 126.7K words

27,024 views

7. Public relations by Maximilian (18 parts) CGrow Viol Hair Taller Giant Cock HyCock Cum MGrow Gut Musc PSD Bond Shr Grow 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 • 125.0K words

49,958 views

8. Transform: Muscle City by Also Known As (21 parts) Hard CGrow Cock Infect XCock MGrow Musc Grow 2Gay Series Series Emotionally, the Muscle Club has become a community of transformed men who are farm beyond normal. Now is the time to make it a literal community all its own—a city of transformed muscle. Added Jan 2014 • 120.0K words

20,528 views

9. All good things by Anon Amon (100 parts) Bro CGrow CumInf Balls Cock HyCock Cum Immob Infect MGrow Musc NipCum 2Gay Twins 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 Aug 2019 • 115.4K words

137,412 views

10. Jason’s big problem by Joven (49 parts) Bro CGrow Taller Balls Cock HyCock Cum MGrow Musc Grow 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. Added Oct 2013 • Updated Nov 2017 • 114.7K words

144,005 views

11. My roommate by LenZelig (9 parts) AgeDiff Bi Bro CGrow Dom Dad Virgin Het Cock Mind MGrow Musc Series Bill’s hot adventures with his irresistible sex-god of a roommate, Andy Wang. Added Jul 2002 • Updated Oct 2019 • 113.0K words

95,941 views

12. Big is better by XH4M (32 parts) Demons Virgin Cock Hypno MGrow Musc NipC Pete and Sam experience epic growth, unexpected adventures, and sweet romance. Added Oct 2003 • 111.5K words

60,328 views

13. Seducers by Also Known As (31 parts) CGrow Fly Cock HyCock Pher XCock MGrow Musc Series The sequel to Supermen and Transform. Added Aug 2003 • Updated Sep 2018 • 108.0K words

36,997 views

14. Mariposa honeymoon: A six-pack story by Cris Kane (19 parts) Belly CGrow CShr Dumb Hair Cock Mental MGrow Musc Race Series Their flamboyant best-man Pierce gives strait-laced newlyweds Derek and Charles a mysterious six-pack to liven up their Cancun honeymoon. Added Dec 2018 • Updated Feb 2019 • 105.8K words

10,287 views

15. Justin (the bigger the better) by Giant Worshipper (15 parts) CGrow Giant Cock HyCock Strong MGrow Musc Grow 2Gay A young man starts growing, and growing. He finds he likes it a lot. Added Nov 2009 • 99.1K words

296,637 views

16. Augmentations by Also Known As (18 parts) CGrow Cock Scent MGrow Musc Grow Series Pursuing a fantasy, a successful man hires an erotic partner who’s been augmented, but the kinds of pleasures his new lover can share with him are far beyond anything he’d imagined. Added Jan 2014 • 98.8K words

31,497 views

17. Second puberty by JayPat (15 parts) Bi CGrow Viol Cock Pher MGrow Musc Grow 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 • 91.5K words

53,940 views

18. Bull’s strength by muscl4life (28 parts) AgeDiff Hard Beast CGrow Viol Dad Fly Taller Balls Cock HyCock Infect XAbs XCock MGrow Musc PSD Grow Tf 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 • 88.4K words

47,013 views

19. Transform: The college years by Also Known As (12 parts) CGrow Fly Cock Infect Scent XCock MGrow Musc Grow Series Series The sexy teens affected by the Transform ability wreak even more havoc at college with their amazing and irresistible growth-at-will double-hung dream bods. Added Jan 2014 • 80.1K words

14,316 views

20. The orphanage by JayPat (12 parts) Viol Cock Strong MGrow Musc Grow 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 • 78.2K words

26,301 views

21. Supermen by Also Known As (9 parts) CGrow Virgin Fly HyCock Pher XCock MGrow Musc Series Todd agrees to be the first human subject for a muscle growth serum, little knowing how massive the effects would be, for himself and everyone else. Added Oct 2002 • Updated Sep 2018 • 76.8K words

66,993 views

22. Hard body by Also Known As (14 parts) CGrow Dom Balls Cock MGrow Musc Grow Tf Uncannily attractive and hunky teenager John is sent to the latest in a string of health professionals over his unusual condition: he’s always horny, and it affects his body in a very unusual and highly provocative manner. Added Oct 2016 • Updated Oct 2019 • 75.3K words

58,368 views

23. My roommate: The next generation by LenZelig (5 parts) AgeDiff Bi Bro CGrow Dad Het Cock MGrow Musc Series The folks from My Roommate are raising a new crop of offspring. They are not Andy Wang or his son, but they are not your normal youngsters either. Bill Foster Junior tells the story of how they grew into manhood. Added Nov 2019 • Updated Apr 2020 • 74.0K words

7,540 views

24. Love/shift by BRK (11 parts) AgeDiff Dad Hair Grad Scent MGrow Musc Grow Supn Tf Wbear Series 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 • 68.1K words

29,821 views

25. Mind and body by BRK (16 parts) Hard Bro CGrow Taller Cock Hypno Mind XCock MGrow Musc Grow 2Gay Sugg 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 • 66.2K words

120,801 views

26. Project William by Also Known As (20 parts) MGrow Musc Horny teen Jackson encounters a guy who seems like he’s the god of sweet, muscular, carnal masculine hotness, and that means big changes for Jackson and his friends. Added Oct 2002 • 64.6K words

23,259 views

27. Changing Nick by BRK (16 parts) Hard Cock Merg XAbs XArm XCock XHead XLeg XLimb XPec MGrow Musc Nonc Rep Retcon Grow Stack 2Gay 3Legs 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 • 59.1K words

86,985 views

28. Growth school by Writ Bro (12 parts) CGrow Dom Cock Lycra MusBr MGrow Musc Bond Slave Kit’s rebellion against his rich, inattentive father ends him up in a school for delinquents. Only, it’s not at all what Kit expects. Added Jun 2018 • Updated May 2019 • 55.8K words

39,834 views

29. Side effects by Braun1 (7 parts) Hard CGrow Cock MGrow Musc Grow Added Feb 1997 • Updated Sep 2018 • 55.6K words
45,511 views

30. Project Cerulean MX by The Pecman (17 parts) Cock MGrow Musc Shr Grow Tf After Michael and Joey discover a secret base in the desert, they start to undergo some changes that are both unsetting and exciting. Added Jun 2010 • Updated May 2017 • 54.1K words

31,442 views

Complete story list for Muscle Growth:

1

10th anniversary by Richard Jasper CGrow Cock MGrow Musc George and Joseph reflect on when they met and what it was like growing into horse-cocked super studs. Added Jan 2020 • 1.3K words

7,161 views

1313 Raven Lane (revised) by WordShop (4 parts) CGrow Hair Ghost Hallow Cock MGrow Musc Nonc Grow Two young guys find themselves in trouble on Halloween night after a party. They hide in an old house with the reputation of being haunted. We don't believe in haunted houses, now do we? Added Sep 2017 • 11.0K words

21,014 views

1313 raven lane (a halloween story) by WordShop (4 parts) MGrow Musc Supn Added Nov 2002 • 11.1K words
18,335 views

A

A.I. by Corwin (11 parts) AI Andr Cock Mind MGrow Musc Bond Tim’s homemade A.I. software decides to help him get huge. Added Dec 2013 • 30.6K words
33,833 views

Above average by Ziel (28 parts) CGrow Cock HyCock Cum HMusc MGrow Musc 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 • 130.4K words

199,158 views

The accidental wizard by nolanspice (2 parts) AgeDown MGrow Musc PSD Rep Grow Tf Added Jan 2006 • 2.9K words
16,557 views

The acolytes by Richard Jasper (7 parts) CGrow Hair Taller Cock HyCock HMusc Strong MGrow Musc Grow It all started with an arm-wrestling contest. Blond surfer god Mike Schnelling, 5’10”, 175 lbs., wanted to take me on. Which was fine but I had 50 lbs. on him, all muscle. We never could have imagined how it would all turn out! Added Aug 2020 • 8.1K words

3,574 views

Acting out by Cris Kane (3 parts) CGrow Cock MGrow Musc A straight actor preparing to audition for a gay role receives help getting into character from his gay friend and a couple of magic rings, but their mind-altering effects lead to unexpected outcomes for Quinn and Damon alike. Added Aug 2014 • 24.6K words

23,822 views

Ad man by FanTCMan CGrow Hair Cock HyCock Cum Infect MGrow Musc Nonc 2Gay Added Dec 2003 • 8.6K words
56,396 views

Adam’s first growth spurt by MDS Bro Giant Cock MGrow Musc Grow 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. Added Nov 2016 • 2.4K words

31,506 views

Addiction by Hatman Cock MGrow PSD Added May 2010 • 1.9K words
20,891 views
Administrator by FanTCMan CGrow Dumb Cock MGrow Musc Added Apr 2003 • 1.8K words
20,435 views

Admiring the changes by Josh Barrett MGrow Musc After months of hardly any progress at the gym, Alex finds a strange stone that makes him into what he’s always wanted to be. Added Jun 2014 • 2.0K words

21,545 views

The adventures of Rex by Richard Jasper (6 parts) CGrow Demons Fant Cock MGrow Musc Ogres Race Grow Tf Series MLB Player Rex Chastain is dragooned into the service of a wizard but a magical transformation goes somewhat awry. Added Feb 2020 • 3.9K words

3,963 views

Aftermath by Richard Jasper MGrow Musc Recently widowed, Roger decides to join the gym and get big. Added Jan 2020 • Updated Feb 2020 • 3.9K words
3,557 views

Against protocol by BRK CGrow Dig Cock Cum XArm XLimb MGrow The mods they give to MetaMorph’s in-house scientists to beta-test are supposed to wear off after two weeks, but Jackson’s mods are inexplicably persistent… and they’re starting to pile up. Added Nov 2019 • 2.4K words

3,761 views

Ah! my god by Josh Arima Infl MGrow Musc Added Jun 2005 • 4.3K words
25,625 views

Airport muscle by Richard Jasper (5 parts) CGrow Cock MGrow Musc Shift Tf When you have a really long layover, having a sleeping cube comes in handy! Added Jan 2020 • Updated Feb 2020 • 5.9K words

4,845 views

Aisle 13 by Richard Jasper (7 parts) MGrow Musc A random encounter at the grocery store prompts big Jake to recruit a passel of wannabe muscleboys. Added Jan 2020 • Updated Feb 2020 • 8.3K words

3,179 views

Alex by Jcry123 Cock MGrow Musc A young guy decides to try out a gift from a random stranger that might making him bigger. Added Nov 2011 • 1.5K words
29,074 views

Alex in Wonderland by Anarchy A (3 parts) CGrow Balls Cock HyCock Cum HMusc MGrow Musc Shr Grow Alex follows mysterious man into a forest, and quickly finds himself in a strange new world, deep below the ground. Added Jan 2016 • Updated Apr 2017 • 6.2K words

34,027 views

Alien implants (revised) by WordShop (2 parts) CGrow Hair Cock MGrow Musc Symb Three twenty-year-old military brats have a close encounter that leaves behind unexpected surprises for them all. How do three young guys deal with something that they cannot even begin to explain or understand? Not to mention the very strange dreams… Added Nov 2017 • 3.1K words

15,590 views

Alien tormentors by James Fourlegs Alien Cock XArm XCock XLeg XLimb MGrow Musc Rep Unseen aliens juice the daylights out of their captives. Added Dec 2004 • 1.0K words

17,299 views

All good things by Anon Amon (100 parts) Bro CGrow CumInf Balls Cock HyCock Cum Immob Infect MGrow Musc NipCum 2Gay Twins 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 Aug 2019 • 115.4K words

137,412 views

All or nothing by Double-U MGrow Musc Grow Take a step into Allan Rader’s thoughts and explore a strange new casino that hasn’t opened up to the public yet. Will Allan get some BIG returns? Added Sep 2016 • 2.2K words

10,065 views

All your wildest dreams by FloralSpaded (2 parts) CGrow Cock Infect MGrow Musc When Walker has his hot friend Joe over for the night, things get out of hand and all of Walker’s wildest dreams come true. Added Jun 2018 • 1.5K words

11,038 views

Alpha by CharitysSongbird Fur CGrow Dom Taller Balls Cock HyCock MGrow Musc Self Grow Tf Were Used to being smaller than his office mates, especially his crush Tavy, Ritzy is stunned when he suddenly starts getting bigger and furrier, even as the impulse to dominate seeps into his personality. Added Aug 2018 • 14.3K words

24,224 views

Alpha House by NBCK99 (3 parts) CGrow Cock Pher MGrow Musc 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 • 11.9K words

47,705 views

Alpha Luke and the wrestling team by Eric Aaldersen CGrow Grad Balls Cock Cum Pher Strong MGrow Musc 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 • 6.9K words

2,639 views

Alpha Luke grows his circle by Eric Aaldersen Bro Balls Cock MGrow Musc 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 • 9.0K words

4,300 views

Alpha Luke passes on the lore by Eric Aaldersen CGrow Grad Balls Cock MGrow Musc Supn Series Luke and Brian’s story finally reaches its climax and afterwards things get positively mystical. Added May 2020 • 4.9K words

2,105 views

Alpha male by Josef Howard (5 parts) MGrow 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 • 15.1K words

31,477 views

Alpha master god king by MaleHypnoDomination and Mr. GreyMan Dom Mind MGrow Musc An unassuming househusband accidentally becomes the God-King of the world. Added May 2016 • 7.6K words

17,563 views

Alpha Mike and his alpha bro by Eric Aaldersen Bro CGrow Grad Balls Cock MGrow Musc Supn Series Meet Alpha Mike, Luke’s older brother, on the day that he discovers that his little bro is an alpha, too! Added Mar 2020 • 5.4K words

4,495 views

Alpha product series by Chet Boner (18 parts) AgeDiff Bro CGrow Dad Balls Cum MGrow Musc NipCum Images 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! Added May 2017 • Updated May 2019 • 22.7K words

56,289 views

The Alpha by Ziel Fur Hair Cock 2Anim MGrow Musc Nonc Tf Harrison’s chance encounter with the creature that has been stalking the campus changes him in ways he’d never thought possible. Added Dec 2017 • 4.1K words

14,940 views

Altered by Dream Big (5 parts) CGrow Hair Taller Cock 2Anim Pher MGrow Musc Nonc Bond Grow 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 May 2020 • 9.5K words

11,590 views

Amplifications by Also Known As (5 parts) Cock MGrow Musc Grow Series Added Jan 2014 • 22.6K words
18,443 views

And then he came by Teen Hulk (2 parts) CGrow Virgin Cock Cum Infect MGrow Musc Self David's dream is interrupted … but only until his next visit to the gym. Added May 2002 • 7.4K words

33,264 views

Andy finds Cockr gives and takes away by Clearlyhere (5 parts) CGrow CShr Dom Cock MusBr MGrow Musc 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 • 14.0K words

23,597 views

Angelo and Adrian by WordShop (8 parts) CGrow Grad Pher Infect MGrow Musc Genius Angelo and sweet Adrian are both scarred by their pasts. Angelo has to accept change in his life, and accidentally, without intending it, Adrian is forced to accept a new life for which he is not at all prepared. Added Oct 2017 • Updated May 2018 • 42.9K words

19,111 views

Another nerd story by Sithspawn (2 parts) CGrow Taller Cock Strong MGrow Musc Nano Grow Ollie is your typical nerd who asks his neighbour for help dealing with the local bully. Tom offers some advice that leads to an encounter he'll never forget. Added Apr 2020 • Updated May 2020 • 9.1K words

6,487 views

Anything to grow by Big Bull Trainer Dumb Immob MGrow Musc Grow Tf There are some with an unquenchable desire to not only grow, but to grow to unnaturally large proportions, and will go to any lengths to do it. This is a story of just such a person. Added Aug 2016 • 7.8K words

30,940 views

The apartment by BRK CGrow Taller Cock Mental MGrow Retcon Sometimes what you need in a new apartment has more to do with what’s missing in your life. Added Apr 2020 • 3.4K words

4,754 views

An app for the ages by Seth Peterson Fem CGrow Dumb Hair Taller Cock MusBr MGrow Musc 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 • 3.1K words

15,553 views

The application by SuperWaffle (8 parts) Fur MGrow Musc Grow 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 • 44.5K words

35,535 views

Are you sure by Dream Big (5 parts) Bi CGrow Taller Het Balls Cock Cum MGrow Musc Race Self Grow Suddenly awash with money, Bill takes the plunge and follows the stories of secretly augmented men and women to a remote lab where they promise to fix everything he doesn’t like about his body. Added Nov 2019 • 6.2K words

6,539 views

The Arsenal of Secrets by BRK (10 parts) CGrow Fant Taller Cock XAbs XArm XLimb MGrow Grow Tf 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 • 25.8K words

2,531 views

At the cafeteria by BRK (3 parts) CGrow Cock Immort Infect XCock MGrow Musc Sugg 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 • 8.4K words

22,546 views

Attil|a|rt by LAComplex CGrow Viol Taller Giant Cock MGrow Musc Grow The 15-foot phenomenon Attila pays a visit to the world-famous Michelangelo’s David statue, having decided to offer to the world a new reference for manliness and virility. Added Mar 2019 • 7.0K words

5,827 views

Augmentations by Also Known As (18 parts) CGrow Cock Scent MGrow Musc Grow Series Pursuing a fantasy, a successful man hires an erotic partner who’s been augmented, but the kinds of pleasures his new lover can share with him are far beyond anything he’d imagined. Added Jan 2014 • 98.8K words

31,497 views

The awakening (muscl4life) by muscl4life (2 parts) CGrow Fant Cock MGrow Musc Added Nov 2013 • Updated Dec 2013 • 10.3K words
14,541 views

Away game by spacevlad (2 parts) MGrow Gut Musc PSD Grow College freshman Adam is the smallest guy on the football team. On an away game road trip, he gets paired up to room with Wyatt, the biggest offensive lineman on the team. Adam tries to control himself as they are forced to share a bed, but Wyatt’s massive body is hard to resist. Added Dec 2017 • 6.3K words

18,073 views

B

Baby brother by Shawn D. Stewart Bro CGrow Taller MGrow Musc "Kev, did you see a glass here?” “Whoa, man, was that yours? Sorry… I was really thirsty…” “You drank it!?” Aaaaand off we go! Added Mar 2003 • 2.9K words

93,996 views

Bait and tackle by Ziel CGrow CShr Hum MGrow MTheft Shr Grow Super Series Sapp continues his size-draining activities. This time against the speed and power of a hero called Linebacker. Added Apr 2020 • 5.4K words

4,377 views

The band by BRK (2 parts) Cock HyCock XArm XLimb MGrow PSD Rep Grow Sugg 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 • 7.5K words

15,603 views

Bara juice by Smokey Digsby Fur CGrow Cock MGrow Musc Baxter, a limpy junkyard poodle, starts taking supplements to enhance his body. What he gets, however, is a unexpected change during a very important date with the guy of his dreams. Added Aug 2017 • 2.6K words

9,821 views

Basement full of muscleboy gods by Krisiar Btaur CGrow 4Legs Cock XAbs XCock XLeg XLimb MGrow Musc NipCum Wrestler Oliver scores some pills that are supposed to bring on muscle growth, and decides to share them with his best buds after a match. Added May 2011 • 2.1K words

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Baxter prep by BRK MGrow Musc Grow A candid interview with the man who admitted dosing the stars of his reality TV show, Baxter Prep, with serums that altered their bodies—without their knowledge. Added May 2011 • 2.0K words

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Be careful what you download by Tereshky CGrow Cock HyCock MGrow Musc Nude SocMed Tim Ryan learns a lesson about using Instagram filters. Pick to the wrong one and it might change more than your pics. Added Dec 2019 • 3.4K words

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Be careful what you wish for by Tereshky (6 parts) AgeDown CGrow Balls Cock Immob MGrow Musc Nonc 2Gay “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 Aug 2020 • 25.4K words

22,106 views

Bear’s den by Pfefferooney (3 parts) Belly CGrow Hair Balls Cock HyCock Infect MGrow Musc NipCum Grow 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 • 9.0K words

16,693 views

The becoming by Musclebuff (2 parts) MGrow Musc Added Oct 2002 • 6.0K words
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Becoming a muscle god by Corwin CGrow Dom Giant Cock MGrow Musc Grow Mike discovers what it's like to become a muscle god, and how awesome it is to turn the tables on the coach who’d thought he’d get to dominate the newly-grown Muscle Mike. Added Apr 2018 • 3.1K words

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Becoming the ultimate man by musclestory Hair MGrow Musc Added Aug 2003 • 4.6K words
70,141 views

The beefening by Benjamin Skipper CGrow Dom Hair Balls Cock MGrow Gut Musc Nonc PSD Grow 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 • 2.3K words

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Being big by BigBoy Cock MGrow Musc Added Jul 2002 • 1.0K words
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The belt by Marc MGrow Musc Added Jul 2002 • 1.5K words
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Ben gets huge by spacevlad (8 parts) Giant Cum Scent MGrow Gut Musc PSD Grow Matt, a kicker on a college football team, befriends Ben, a burly, bearish, muscular offensive lineman with a desire to get bigger. Matt is … able to help him with that. Added Jun 2016 • 17.8K words

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Bending the straight boys by iciss (2 parts) Bro CGrow Virgin Cock MGrow Musc 2Gay 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 • 11.1K words

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The Benefactor by Proteus (10 parts) Hard CGrow Taller Balls Cock Immob MGrow Gut Musc Nonc PSD Grow Supn The Benefactor bestows favor on those he deems worthy, whether they like it or not. Added Jan 2020 • Updated Apr 2020 • 10.3K words

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Ben’s escapades by Kaelan (9 parts) Bro CGrow Grad Balls Cock HyCock Cum MGrow Musc NipCum Self 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 • 33.6K words

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The berries down by the creek by Krisiar CGrow HyCock XAbs MGrow Musc NipCum Grow Jack hangs out with his friend and crush, Kurt, which leads to an encounter with a bush sporting some unusual berries. Added May 2011 • 3.6K words

44,403 views

Best birthday ever by TheSizeKing (5 parts) CGrow Balls Cock HyCock MGrow Self Zac is already above average. But when his birthday comes around, he gets everything he wishes for and then some. Added Feb 2020 • 14.9K words

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Best buds by Richard Jasper (9 parts) Hair Grad Cock MGrow Musc 2Gay John and James, one straight, one gay, are freshman roommates. They bond over bodybuilding… and succeed beyond their wildest imaginings. Added Feb 2020 • 13.4K words

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Best wishes and regards by Lemur MGrow Musc Added Jul 2002 • 2.2K words
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The bet by JayPat (4 parts) MGrow Musc Grow 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 • 31.8K words

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Bet you can’t have just one by Ziel CGrow Giant Balls Cock HyCock MGrow Musc Grow Vincent was given pretty clear instructions with the new growth supplement his pal invented: “Only take one pill.” Added May 2017 • 5.6K words

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Beta Logan and his big brother by Eric Aaldersen Bro CGrow Grad Balls Cock Cum Pher Strong MGrow Musc Supn Series Logan has difficulty controlling himself as his older brother Brian becomes a bigger and bigger stud. Added Jun 2020 • 6.4K words

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Beyond Olympia by Richard Jasper HMusc MGrow Musc What happens when you're so freaking big the other Olympia competitors howl “unfair, unfair”?! Added Feb 2020 • 1.5K words

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Big by Joe Bell MGrow Musc Added Jul 2002 • 0.9K words
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Big all over by Richard Jasper (3 parts) Cock MGrow Musc What do you do when you’re blessed (cursed?) with a giant dick? Grow a giant body, of course! Added Feb 2020 • 5.5K words

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Big Frank by Unknown (4 parts) MGrow Musc Added Jul 2002 • Updated Jun 2019 • 3.5K words
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Big is better by XH4M (32 parts) Demons Virgin Cock Hypno MGrow Musc NipC Pete and Sam experience epic growth, unexpected adventures, and sweet romance. Added Oct 2003 • 111.5K words

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Big Jim: Rough going by Richard Jasper (5 parts) Cock MGrow Musc Images Inspired by the Mattel action figures of the 1970s! Strange things happen to Big Jim, Big Jack and Big Josh on their annual trip to Joshua Tree to catch the meteor shower. Added Feb 2020 • 7.1K words

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Big little rich boy by Richard Jasper (8 parts) Taller MGrow Musc Grow Sometimes family drama makes you realize what matters—and who. Added May 2003 • Updated Feb 2020 • 7.1K words

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Big men on campus by Aardvark and Cris Kane Viol HMusc MGrow Musc Grow The Alpha Alpha Alpha fraternity recruits a prospective pledge who will need a few adjustments to fit in. Added Oct 2014 • 22.4K words

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Big project by muscl4life Cock MGrow Musc Grow Added Nov 2013 • Updated Dec 2013 • 5.3K words
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A big year by Dancer CGrow Grad Cock Immob MGrow Musc PSD Grow Andy gets a big surprise when a fortune teller tells him he will have big gains this year. Added Mar 2018 • 4.3K words

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Bigger issues by muscl4life (6 parts) Hard CGrow Cock HyCock XAbs MGrow Musc Grow 2Gay Series Thanks to Kyle, Sean discovered his serum works better than he expected… And now his freaking muscular lover each time is more intoxicated with his newly found POWER, and can such difference of muscular capacity make the couple apart? Added Dec 2013 • 47.0K words

109,047 views

Bigger issues: Ultimate growth by muscl4life (6 parts) CGrow Cock HyCock Infect MGrow Musc Grow Series Added Nov 2013 • Updated Dec 2013 • 31.8K words
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Biggest by Also Known As (2 parts) Hard Cock MGrow Musc Added Jan 2014 • 9.2K words
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