A.I. by Corwin Tim’s homemade A.I. software decides to help him get huge. 11 parts Added Dec 2013 72k views 4.8 stars (43 votes) 31k words •Huge Cock•Cum Milking•Addiction•Hyper Muscle•Muscle Growth•Muscle/Strength•Muscle Worship•Gradual Change•Plausible Size Difference•Size Increase•A.I.-Controlled Change•Destruction/Violence•Restraints•Androids/Cyborgs•Complete •M/M
Brad’s big change by FanTCMan Brad, secretly yearning for a muscle body, is nudged into action by a posting on a bulletin board. 5 parts Added Dec 2002 72k views 4.6 stars (28 votes) 17k words •Muscle Growth•Muscle/Strength•Getting Handsomer •M/M
Frank’s gym by Writ Bro Alec finds out more about what it means to be one of Frank’s bitches—and having his growth under Frank’s control. 7 parts Added May 2014 Updated 6 Mar 2015 55k views 4.6 stars (38 votes) 22k words •Cock Growth•Huge Cock•Muscle Breast•Muscle Growth•Muscle/Strength•Dom/Sub•Sex-Slave•Dildos/Toys •M/M•M/M/M
The hulk pill by JayPat The only thing weirder than your buddy Boz offering you a “hulk pill” would be for it to actually work. 5 parts Added Oct 2012 94k views 4.7 stars (29 votes) 29k words •Cock Growth•Huge Cock•Hyper Muscle•Hyper Strength•Muscle Growth•Muscle/Strength•Size Increase•Nanotech•Destruction/Violence•Infectious•Complete •t/t
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. 8 parts Added Aug 2014 37k views 4.6 stars (41 votes) 20k words •Always Hard•Cock Growth•Huge Cock•Hyper Cock•Hyper Muscle•Muscle Growth•Muscle/Strength•Gradual Change•Size Increase•Incest•Brothers •M/M
The price by Mikeytron Anthony’s husband, Tom, has just turned 40, and is in despair that his body will never become what he wants it to be. Anthony feels powerless to help, until a mysterious entity gives him the opportunity to rewrite Tom’s past– but there is always a price. A dark but hopefully redemptive story about desperation, time travel, and love. 5 parts Added May 2022 Updated 18 Jun 2022 14k views 5.0 stars (34 votes) 19k words •Cock Growth•Other Mental Changes•Hyper Muscle•Immobility•Muscle Growth•Gradual Change•Retcon•Time Travel•Supernatural•Complete •M/M
Primal attraction by Mikeytron Two dedicated hardgainers have been noticing each other at the gym. Their paths finally cross, and they begin to change– subtly at first, but it won’t stay that way. 5 parts Added Jan 2022 Updated 19 Feb 2022 15k views 4.9 stars (58 votes) 12k words •Muscle Growth•Muscle/Strength•Muscle Worship•Gradual Change•Human to Animal/Anthro•Getting Hairy•Werewolves•Supernatural•Complete •M/M
A real man by DoubleCream A douchey gym bro wakes up in another world, in another body. 6 parts Added Jan 2021 Updated 4 Mar 2023 34k views 4.8 stars (54 votes) 30k words •Cock Shrinking•Huge Balls•Huge Cock•Addiction•Straight to Gay•Muscle/Strength•Muscle Worship•Man Scent•Increased Libido•Male Pregnancy•Plausible Size Difference•Size Decrease•Hairless•First Time/Virgin•Cock Cage•Dom/Sub•Nonconsensual change•Hyper Pheromones•Mind Control •M/M
Summer research by spacevlad Dave, an ambitious researcher at a well-known university, hires an eager-to-grow football player to test an experimental growth supplement. The experimental growth supplement works much better than anticipated and Grunt gains over 50 pounds in just a week, though with some troubling side-effects. 12 parts Added Oct 2017 Updated 22 Dec 2017 53k views 4.8 stars (29 votes) 29k words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Getting Dumber•Other Mental Changes•Straight to Gay•Hyper Muscle•Hyper Strength•Muscle Growth•Muscle Gut•Muscle/Strength•Man Scent•Belly Growth•Getting Taller•Giants•Plausible Size Difference•Size Increase•Getting Hairy•Destruction/Violence•Sex-Slave•Fourth of July •M/M
Tiger troubles by Meddler Incs 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. 2 parts Added Dec 2014 Updated 2 Sep 2016 27k views 4.8 stars (41 votes) 5,763 words •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Anthro/Furry •M/M
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