Butt Growth

Stories in which the growth of someone’s ass (or arse) is significant.

  Child of:  Other Physical Changes. Related tags:  Belly Growth;Breast Expansion;Butt Growth;Detachable;Feeding;Foot Growth;Getting Handsomer;Gradual Change;Increased Libido;Male Pregnancy;Transformation;Voice Deepening.

  Tag Group:  Growth.

A 4

Above average by Ziel 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. 28 parts Added Apr 2013 272k views 4.6 stars (104 votes) 130k words (#10) •Cock Growth•Ball Growth•Huge Cock•Hyper Cock•Hyper Cum•Public Orgasm•Hyper Muscle•Muscle Growth•Muscle/Strength•Public Nudity•Butt Growth•Retcon •M/M•M/M/M•M/M/M/...

An airplane parasite by SomeMuscleGuy After bumping into the wrong person at the airport, Michael is infected with a parasite that was on its way to be destroyed. This parasite only has one goal in mind: Growth. Massive Growth. Added Oct 2022 22k views 4.7 stars (27 votes) 4,977 words •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Hyper Cum•Multi-abs•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Butt Growth•Foot Growth•Transformation•Voice Deepening•Getting Taller•Giants•Size Increase•Destruction/Violence•Nonconsensual change•Infectious•Aliens•Symbiotes •M

The alpha touch by Caliburn Young engineer Max has a good deed rewarded with a mysterious rune now tattooed to his wrist. Bestowed with the power to change the body of the men he touches, Max’s life and his friends’ change quite a bit. 12 parts Added Jan 2022 71k views 4.9 stars (178 votes) 50k words (#65) •Cock Growth•Huge Balls•Huge Cock•Straight to Gay•Muscle Growth•Butt Growth•Increased Libido•Gradual Change•Voice Deepening•Getting Taller•Size Increase•Getting Hairy•Suggestion•Hetero Sex•Dom/Sub•Nonconsensual change •M/M•M/F

Ascension Escape Games by SomeMuscleGuy Welcome to Ascension Escape Games where you have two hours to escape the largest Escape Room in the world—alone! But be careful, if you aren’t quick enough, you may just grow too large before you can find a way out. Added Oct 2022 11k views 4.8 stars (16 votes) 6,147 words •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Hyper Cum•Multi-abs•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Butt Growth•Foot Growth•Transformation•Voice Deepening•Getting Taller•Giants•Size Increase•Destruction/Violence•Nonconsensual change •M

B 5

Beefcake by Zero They say you are what you eat—especially true for magical foodstuffs with growth-inducing powers—and wimpy freshman Bradley is about to take a bite. Added Feb 2021 17k views 4.6 stars (12 votes) 1,591 words •Cock Growth•Huge Cock•Pec Fucking•Muscle Growth•Muscle/Strength•Butt Growth•Getting Handsomer•Getting Taller•Size Increase

The book of desires by SomeMuscleGuy After stealing a corrupted book at the gym, Michael is left growing uncontrollably by a Symbiotic Demon that only wants to swell its victims with the most size possible. But even the demon underestimates just how gigantic Michael wants to become. Added Dec 2022 16k views 4.9 stars (8 votes) 7,676 words •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Hyper Cum•Public Orgasm•Multi-abs•Addiction•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Muscle Worship•Public Nudity•Butt Growth•Foot Growth•Transformation•Voice Deepening•Getting Taller•Giants•Size Increase•Destruction/Violence•Nonconsensual change•Infectious•Aliens•Symbiotes•Complete•Stories with Images •M

The breakthrough by Gigantic Mr.B One lapse in concentration sets off an unstoppable chain of events for an 18-year-old lab intern, Ben. 5 parts Added Apr 2022 28k views 4.8 stars (38 votes) 18k words •Cock Growth•Huge Balls•Huge Cock•Hyper Cum•Hyper Muscle•Hyper Strength•Muscle Growth•Butt Growth•Gradual Change•Getting Taller•Size Increase•Infectious •M/M

The bubblebutt curse by Gato-Cat Picky Luke, who prefers bottom-heavy men, gets cursed so that every man he finds attractive grows a massive, sensitive bubble butt. Added Sep 2022 6,934 views 4.9 stars (28 votes) 3,407 words •Butt Growth•Inflation•Nonconsensual change •M/M

Bulking by Proteus Sometimes, when people have a crush on their hunky roommate, they act on it by secretly trying to make the guy progressively hotter. 6 parts Added Mar 2013 52k views 4.6 stars (18 votes) 7,143 words •Muscle Growth•Muscle Gut•Muscle/Strength•Butt Growth•Gradual Change•Getting Hairy

C 11

Cave of worshippers by SomeMuscleGuy After a strange workout session with his friend Ben, Mike wakes up restrained in a cave, surrounded by cultists who want to make him their muscle god. Added Jan 2023 12k views 4.6 stars (14 votes) 8,219 words •Always Hard•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Self-suck•Hyper Cum•Multi-abs•Addiction•Hyper Muscle•Hyper Strength•Muscle Growth•Muscle Worship•Butt Growth•Increased Libido•Foot Growth•Transformation•Voice Deepening•Getting Taller•Forced Growth•Plausible Size Difference•Size Increase•Getting Hairy•Dom/Sub•Nonconsensual change•Restraints•Absorption•Complete •M/M

A close encounter by King Dave Evan is not alone in his apartment. Something that wants to study him. Is that all that it wants? 3 parts Added Dec 2021 9,502 views 4.8 stars (23 votes) 7,234 words •Cock Growth•Muscle Growth•Butt Growth•Getting Handsomer•Voice Deepening•Getting Hairy•First Time/Virgin•Aliens•Shapeshifting •M/M

Clowning around by screamingmoist A group of arrogant young men get a surprise visit, but it’s no laughing matter. Added Aug 2022 6,620 views 4.5 stars (6 votes) 3,664 words •Cock Growth•Muscle Growth•Butt Growth•Transformation•Inflation •M/M•M/M/M

The Cockmoore Chronicles: Blake by CockTFBoi Trey, Zack, and Nick have learned the truth about the book, and are resolved to help free Blake from his self-imposed prison. Trapped with a half-finished world-altering spell, the three of them need to find a way to change the spell to mitigate the worst of its effects. 2 parts Added Apr 2023 2,285 views 5.0 stars (1 vote) 9,521 words •Cock Shrinking•Cock Theft•Cockless•Human to Cock•Transgender•Muscle Worship•Man Scent•Butt Growth•Transformation•Human to Body Part•Human to Inanimate•Hairless•Nonconsensual change•Witch/Warlock/Wizard•Complete •M•M/M•M/M/M

Commercial audition by PeroPero Sometimes trying out for a commercial leads to more than 30 seconds of fame. Added Jul 2023 3,554 views 2.0 stars (9 votes) 963 words •Always Hard•Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Hyper Cum•Hyper Muscle•Immobility•Muscle Growth•Muscle/Strength•Butt Growth•Breast Expansion•Voice Deepening•Getting Taller•Size Increase•Anthro/Furry•Complete •M/M

Conner’s massive reveal by MegaMaker Isaac and Connor have been dating for years and recently graduated college. Connor wants this relationship to last for the rest of their lives. In order to do that he must reveal what he truly is to his lover. He’s afraid Isaac won’t want to be with him anymore but when Isaac finds out he falls in love with Connor all over again. Added Feb 2023 11k views 4.3 stars (8 votes) 6,540 words •Always Hard•Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Always Cumming•Hyper Cum•Public Orgasm•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Muscle/Strength•Muscle Worship•Public Nudity•Man Scent•Butt Growth•Increased Libido•Gradual Change•Voice Deepening•Getting Taller•Giants•Forced Growth•Size Increase•Shapeshifting•Complete •M/M

Containment breach by SomeMuscleGuy After Kalos experiences a suit malfunction while working with a Radioactive Material at work, he is left growing at a quickening rate to sizes that nobody ever thought was possible, and its contaminated effects are spreading too fast to be stopped. Added Mar 2023 13k views 4.7 stars (17 votes) 11k words •Always Hard•Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Self-suck•Cum Milking•Always Cumming•Hyper Cum•Nipple Emissions•Public Orgasm•Extra digits•Multi-abs•Multiarm•Addiction•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Muscle Gut•Muscle Worship•Public Nudity•Butt Growth•Belly Growth•Increased Libido•Transformation•Voice Deepening•Getting Taller•Giants•Forced Growth•Size Increase•Getting Hairy•Nonconsensual change•Rubber/Latex•Infectious•Complete •M

Corporate growth by screamingmoist Corporate growth can take on a whole new meaning if you cross the wrong people. Added Sep 2021 9,208 views 4.1 stars (7 votes) 6,574 words •Cock Growth•Getting Dumber•Straight to Gay•Muscle Growth•Butt Growth•Nonconsensual change •M/M

Crack the code by screamingmoist A man uses a super computer to write more than mere programs. Added Nov 2021 8,470 views 4.4 stars (5 votes) 4,409 words •Cock Growth•Cock Shrinking•Muscle Growth•Butt Growth•Size Decrease•Retcon •M/M•M/M/M/...

Crack the code: Employee of the month by screamingmoist A burnt-out young man with eyes on his boss hopes to have his code rewritten. Added Aug 2022 5,515 views 5.0 stars (4 votes) 5,761 words •Cock Growth•Getting Dumber•Muscle Growth•Butt Growth•Retcon •M/M

The crew by Aftercalen The captain of the Ikenmore University rowing club helps his teammates reach their full potential. Added May 2023 5,277 views 3.3 stars (6 votes) 1,899 words •Cock Growth•Muscle Growth•Muscle Worship•Butt Growth•Getting Hairy•Nonconsensual change•Lycra/Spandex •M/M

D 2

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. 2 parts Added Apr 2022 13k views 4.4 stars (17 votes) 5,446 words •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

Doubling device by Musclesaber Max is in for a surprise when Luke gets ahold of a device that can double anything about a person. 2 parts Added May 2022 13k views 4.7 stars (20 votes) 5,481 words •Cock Growth•Huge Cock•Hyper Cock•Hyper Muscle•Immobility•Muscle Growth•Public Nudity•Butt Growth•Getting Taller•Giants•Size Increase •M/M

E 1

EH for short by MegaMaker In a world where certain men become enhanced through a genetic mutation, Corey one day decides to try to meet one at a local beach known for being a hotspot for enhanced humans. When he stumbles on Cliff, a connection develops that’s stronger than he’d expected. Added Feb 2023 7,291 views 4.1 stars (10 votes) 11k words •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Hyper Cum•Public Orgasm•Straight to Gay•Hyper Muscle•Hyper Strength•Muscle Growth•Muscle/Strength•Muscle Worship•Public Nudity•Butt Growth•Increased Libido•Gradual Change•Transformation•Voice Deepening•Getting Taller•Giants•Size Increase•Race/Ethnicity Change•Nonconsensual change•Complete •M/M

F 2

Frank N. Stein’s monster by Musclesaber Dr. Franklin Nelson Stein has finally done it. He’s perfected a muscle growth formula that he plans on using on his husband Luke. Little do they know how Luke’s body will react to the formula after Luke ingests more than he intended. Added Oct 2021 8,843 views 4.8 stars (12 votes) 2,826 words •Cock Growth•Huge Cock•Muscle Growth•Muscle Theft•Butt Growth•Getting Taller•Supernatural •M/M

Freshman, fresh men by West Your best friend and secret crush is now your roommate during your freshman year of college. Both of your comfort levels with each other change when he emerges from the shower smelling fresher than ever, and also bigger each time. 2 parts Added Sep 2023 5,444 views 4.8 stars (14 votes) 3,720 words •Cock Growth•Huge Cock•Muscle Growth•Butt Growth•Getting Taller•Size Increase•Retcon •M/M

G 2

The great pumpkin by screamingmoist Four young vandals learn that it’s bad luck to destroy jack-o’-lanterns on Halloween. Added Oct 2021 6,660 views 4.7 stars (6 votes) 8,028 words •Public Orgasm•Getting Dumber•Other Mental Changes•Straight to Gay•Butt Growth•Increased Libido•Transformation•Size Decrease•Hairless•Nonconsensual change•Horror•Supernatural•Halloween •M/M/M/...

The growth race by SomeMuscleGuy John is left growing uncontrollably as he races to be the first person to finish the race, but he may be too large before he reaches the finish. Added Aug 2022 11k views 4.8 stars (11 votes) 3,701 words •Cock Growth•Huge Cock•Hyper Cock•Hyper Cum•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Muscle/Strength•Public Nudity•Butt Growth•Transformation•Voice Deepening•Getting Taller•Giants•Size Increase•Nonconsensual change •M

H 4

Hashtag by screamingmoist Troy downloads the Facets app and opens up a world of possibilities. 4 parts Added Feb 2023 7,797 views 4.6 stars (5 votes) 14k words •Cock Growth•Cock Shrinking•Butch-to-Fem•Getting Dumber•Other Mental Changes•Straight to Gay•Muscle Growth•Butt Growth•Transformation•Size Decrease•App•Retcon •M/M•M/M/M

Hidden passages by screamingmoist A magical book finds its way to a new author. Added Apr 2022 8,805 views 4.6 stars (7 votes) 5,254 words •Cock Growth•Huge Cock•Other Mental Changes•Straight to Gay•Muscle Growth•Always Shirtless•Butt Growth•Increased Libido•Getting Handsomer•Transformation•Retcon•Mind Control •M/M

Himbo pussy serum by BaraBootyEater Josh and Jason are a pair of horny bio-engineering students who’ve created a serum that can cause some muscly changes to those they give it to. Added May 2021 12k views 3.9 stars (14 votes) 1,126 words •Cock Growth•Huge Balls•Huge Cock•Muscle Growth•Butt Growth•Hairless

The hunger by JustSam A young scientist decides to try a muscle-growth serum on himself, but it does not have the intended effect. Added Feb 2023 2,883 views 4.3 stars (4 votes) 856 words •Butt Growth•Increased Libido•Dildos/Toys •M

I 2

Incubus encounter by Demonized The sauna in the rental house you have for the weekend isn’t as private as you thought... Added Aug 2023 2,751 views 5.0 stars (9 votes) 3,607 words •Cock Growth•Ball Growth•Muscle Growth•Butt Growth•Transformation•Getting Taller•Demons•Incubus/Succubus•Supernatural•Complete •M/M

It’s never enough by K. Theeunknown All Trent wants is companionship, until his inner size queen takes him down a deep rabbit hole. Will he ever be able to clean up the nearly uncontrollable mess he’s made? 3 parts Added Jan 2023 21k views 4.8 stars (33 votes) 6,734 words •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Cum inflation•Hyper Cum•Nipple Emissions•Addiction•Straight to Gay•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Muscle Gut•Butt Growth•Getting Taller•Forced Growth•Size Decrease•Size Increase•Hyper Anus •M/M

K 1

Kyle’s himbo transformation by Joven Kyle goes on vacation with some friends, then starts to experience a few sudden and unexplained changes. 14 parts Added Nov 2021 30k views 4.8 stars (25 votes) 19k words •Cock Growth•Huge Balls•Huge Cock•Self-suck•Straight to Gay•Pec Fucking•Muscle Growth•Butt Growth•Gradual Change•Dom/Sub•Nonconsensual change •M/M•M/M/M

L 1

A little somethin’ by MegaMaker After two longtime friends spend the day at the beach, Davey can't help but notice how muscular his buddy Sam has gotten. When Davey asks about it, Sam’s reactions are more than a little unexpected.  2 parts Added Jan 2023 9,733 views 4.3 stars (7 votes) 6,908 words •Always Hard•Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Always Cumming•Hyper Cum•Public Orgasm•Multi-abs•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Muscle/Strength•Muscle Worship•Public Nudity•Butt Growth•Increased Libido•Gradual Change•Size Increase•Complete •M/M

M 10

Mariposa honeymoon: A six-pack story by Cris Kane Their flamboyant best-man Pierce gives strait-laced newlyweds Derek and Charles a mysterious six-pack to liven up their Cancun honeymoon. 19 parts Added Dec 2018 20k views 4.6 stars (12 votes) 106k words (#22) •Cock Growth•Cock Shrinking•Huge Cock•Getting Dumber•Other Mental Changes•Muscle Growth•Muscle/Strength•Butt Growth•Belly Growth•Increased Libido•Size Decrease•Size Increase•Age Regression•Race/Ethnicity Change•Getting Hairy•Witch/Warlock/Wizard •M/M•M/M/M/...

MaXXXed out by Now Voyager A cocky guy named Max visits a spa on the edge of town run by gorgeous women. But when he finds himself strapped into a transformative massage chair, he pays for his disrespectful flirting with his body.  Added Mar 2023 3,882 views 3.5 stars (2 votes) 6,629 words •Cock Pumping•Cock Shrinking•Other Mental Changes•Butt Growth•Belly Growth•Breast Expansion•Transformation•Human to Animal/Anthro•Getting Fatter•Misogyny•Nonconsensual change•Aliens•Complete •M/F/F

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? 3 parts Added Nov 2021 12k views 5.0 stars (15 votes) 15k words •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•Selfcest•Dom/Sub•Pagan gods •M/M

Meteor shower by Tym Greene A couple heads out to a costume party to celebrate a big meteor shower. Little do they know that the party’s host has other plans. Added Sep 2021 6,927 views 3.0 stars (2 votes) 10k words •Female to Male•Male to Female•Gender Swap•Gay to Straight•Other Mental Changes•Butt Growth•Belly Growth•Breast Expansion•Gradual Change•Transformation•Getting Taller•Size Increase•Human to Animal/Anthro•Getting Fatter•Retcon•Bisexual•Hetero Sex•Nonconsensual change•Anthro/Furry•Mermen •M/M•M/F•M/M/F

MissinGRO by Ziel Javier discovers to his delight that encountering the infamous Pokémon glitch Missingno can have unanticipated real-world effects. Added Mar 2017 12k views 4.8 stars (10 votes) 5,534 words •Huge Cock•Multi-balls•Multicock•Multiarm•Multilimb•Butt Growth•Plausible Size Difference•Size Increase

Modern rites by red_king Matt’s life changes forever when he receives divine investiture from an old fertility god, fallen from the pantheon, in exchange for his devotion and cooperation in finding more followers. At first it sounded like work, but soon he’s having too much fun to care. 16 parts Added Dec 2018 36k views 4.7 stars (38 votes) 47k words (#74) •Cock Growth•Huge Cock•Hyper Cock•Cum inflation•Hyper Cum•Pec Fucking•Muscle Breast•Muscle Growth•Butt Growth•Getting Handsomer•Transformation•Plausible Size Difference•Size Increase•Destruction/Violence•Restraints•Pagan gods•Supernatural•Immortality•Hyper Anus •M/M•M/M/M

My big dummy by MegaMaker After years of no contact from his old friend Mylo, Arlo gets a random text from him asking if he can come over. It seems Mylo has recently come across these pills that enhance your body. At first Arlo doesn't believe him, but he stops by anyway to make sure everything is okay. Added Feb 2023 9,218 views 4.0 stars (6 votes) 6,057 words •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Hyper Cum•Public Orgasm•Getting Dumber•Hyper Muscle•Hyper Strength•Muscle Growth•Muscle/Strength•Muscle Worship•Public Nudity•Man Scent•Butt Growth•Gradual Change•Getting Taller•Giants•Size Increase•Complete •M/M

My new favorite app, Cockr by Clearlyhere John is out of money and finds out about new app where his huge endowment could make him some serious cash. 5 parts Added Jun 2017 37k views 4.7 stars (32 votes) 14k words •Cock Shrinking•Cockless•Huge Cock•Muscle/Strength•Butt Growth•Detachable•App•Dom/Sub•Body Swap

Mysterious kidnapping by Joven Jared and Derek are traveling abroad when they’re suddenly kidnapped and secreted away in an isolated room… naked. They naturally become aware of each other’s junk, though Derek isn’t too pleased by Jared’s attention. But the situation with their equipment only gets more intense… 13 parts Added Feb 2018 29k views 5.0 stars (20 votes) 23k words •Cock Growth•Huge Balls•Huge Cock•Muscle Growth•Muscle/Strength•Butt Growth •M/M

Mystery lot by screamingmoist Things don’t go as planned when a young man buys a box of old porn tapes at an estate sale, taking him and his roommate from spectators to performers. Added Mar 2023 4,046 views 4.8 stars (8 votes) 3,533 words •Cock Growth•Cock Shrinking•Muscle Growth•Butt Growth•Nonconsensual change •M/M

N 1

The need to obey by Musiker An enormously large, muscular man has only one thing he wants out of life: to be a good boy for his master. He is searching for a new master to take him in when he finds someone who is willing to give him a try-out, and who is not turned off by his enormous balls and knee-length caged cock. 10 parts Added May 2019 35k views 4.8 stars (24 votes) 56k words (#54) •Cock Shrinking•Huge Balls•Huge Cock•Nipcocks•Nosecock•Multicock•Multiarm•Multilimb•Gender Swap•Other Mental Changes•Straight to Gay•Muscle/Strength•Crotchhead•Body Parts in Strange Places•Stretchy•Butt Growth•Belly Growth•Foot Growth•Getting Taller•Giants•Plausible Size Difference•Size Decrease•Size Increase•Getting Hairy•Hyper Tongue•Suggestion•Bisexual•Hetero Sex•Cock Cage•Dom/Sub•Sex-Slave•Rubber/Latex•Immortality •M/M•M/M/M

O 2

OmniGro by Whatinsomnia and Ziel Dissatisfied with the speed at which the current OTC dick growing serum works, Eli, a brilliant scientist in his own right, sets out to make his own super-powered serum. Eli wastes no time in breaking in the new concoction on himself and his boyfriend. The results speak for themselves and their new product revolutionizes the world as they know it. 3 parts Added Mar 2016 28k views 4.8 stars (9 votes) 45k words (#78) •Cock Growth•Cockfucking•Huge Cock•Hyper Cock•Cum inflation•Hyper Cum•Nipple Emissions•Muscle Breast•Muscle Growth•Muscle/Strength•Butt Growth•Size Increase •M/M

One more drop by MegaMaker A college water polo player, Rain, is having trouble keeping up with expectations after a lackluster swim season. Afraid of getting cut from his team, he finds a mystery serum that improve his performance. To his surprise it works and his improved performance gets the approval of his entire team and his coach and really attracts the attention of his friend River. Will the attention go his head? Will his team and coach find out? And… will there be any side effects caused by the use of the serum? 16 parts Added Mar 2023 54k views 4.9 stars (58 votes) 48k words (#71) •Always Hard•Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Always Cumming•Hyper Cum•Public Orgasm•Multi-abs•Addiction•Straight to Gay•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Muscle/Strength•Muscle Worship•Always Shirtless•Public Nudity•Man Scent•Butt Growth•Increased Libido•Gradual Change•Voice Deepening•Getting Taller•Forced Growth•Plausible Size Difference•Size Increase•Getting Hairy•Lycra/Spandex•Complete •M/M

P 4

Patient zero by SomeMuscleGuy After exploring a crashed meteorite, Tim and Kyle are left growing uncontrollably. The hornier they get, the larger they grow. But what happens when growth itself makes them horny? 3 parts Added Nov 2022 23k views 4.7 stars (20 votes) 13k words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Always Cumming•Hyper Cum•Public Orgasm•Multi-abs•Addiction•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Public Nudity•Butt Growth•Increased Libido•Foot Growth•Transformation•Voice Deepening•Getting Taller•Giants•Plausible Size Difference•Size Increase•Nonconsensual change•Infectious•Complete •M/M

The Porter Men by Inclytos The Porters are a family of perfect men, all uniquely perfect in their own way. It’s how it’s always been, right? 3 parts Added Oct 2022 11k views 4.7 stars (21 votes) 8,809 words •Cock Growth•Cock Shrinking•Huge Cock•Dom to Sub•Getting Dumber•Pec Fucking•Hyper Strength•Muscle Breast•Muscle Growth•Muscle/Strength•Always Shirtless•Butt Growth•Increased Libido•Retcon•Incest•Brothers•Father/Son•Twins•Dom/Sub•Sex-Slave •M/M•t/t•M/t

The potion shop by Alpha Pup Templar A new potion shop has opened in the countryside of Marketh. Strangely, they don’t sell healing potions. Instead they sell transformation potions of every kind imaginable! So what happens when adventurers don’t read the directions? 3 parts Added Jan 2023 11k views 4.7 stars (7 votes) 5,540 words •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cum•Public Orgasm•Multi-abs•Multi-balls•Multicock•Boytaur•Multiarm•Multileg•Multilimb•Multipec•Getting Dumber•Other Mental Changes•Immobility•Muscle Growth•Public Nudity•Man Scent•Butt Growth•Increased Libido•Getting Handsomer•Transformation•Getting Taller•Forced Growth•Size Increase•Cocktaur•Nonconsensual change•Bodily Fluids•Hyper Pheromones•Centaurs•Dragons•Fantasy Realm•Mind Control •M•M/M

The prince, the knight, and the dragon by brazboy Years ago a curse was created, connecting the fate of the Northern Empire and that of the Southern Kingdom, but also the fates of the Empire’s first Prince, Alecrias, and that of a Dragon which appeared in the southern mountains and seems to behave in ways that benefit the Southern Kingdom. Can his loyal knight and lover, Sir Oberion, save the Prince from being sacrificed to the Dragon? Can the curse be lifted, and what is its true nature? 8 parts Added Oct 2021 6,947 views 4.5 stars (2 votes) 25k words •Huge Balls•Huge Cock•Self-suck•Hyper Cum•Multi-abs•Hyper Muscle•Immobility•Muscle Growth•Butt Growth•Getting Taller•Size Increase•Tongue Growth•Fantasy Realm•Shapeshifting •M/M

R 3

The radiation zone by SomeMuscleGuy After going off the beaten path to explore an abandoned military base, Alex is involved in an incident that leaves him contaminated with radioactive material, and he won’t stop growing until he escapes. Added Aug 2022 13k views 4.7 stars (26 votes) 3,606 words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Hyper Cum•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Muscle/Strength•Butt Growth•Increased Libido•Foot Growth•Gradual Change•Transformation•Voice Deepening•Getting Taller•Giants•Size Increase•Nonconsensual change•Infectious •M

The real you by MegaMaker Today is Adam’s birthday, and his longtime boyfriend Eddie doesn’t want to give him the gift he’s been asking for. Added Jan 2023 7,629 views 4.5 stars (8 votes) 3,057 words •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Hyper Cum•Hyper Muscle•Muscle Growth•Muscle/Strength•Butt Growth•Increased Libido•Getting Taller•Size Increase•Getting Hairy•Shapeshifting•Complete •M/M

Reality Pack by Thorn What happens when the program you’re working on for school has a downloadable mod? You investigate it of course! 15 parts Added Nov 2020 51k views 4.9 stars (38 votes) 79k words (#34) •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•Valentine’s Day •M/M•M/M/M

S 9

The seashell by MegaMaker Clay’s best friend TJ is trying to help him get a boyfriend at local beach known for having loads of hot guys. This task is harder that they first thought because every guy they meet is into buff guys. Clay feels he falls short of that until he finds a magic seashell that changes him to a hunk of a man. Clay becomes full of himself and takes things too far. Added Feb 2023 7,684 views 4.8 stars (6 votes) 8,336 words •Always Hard•Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Hyper Cum•Public Orgasm•Hyper Muscle•Hyper Strength•Immobility•Muscle Breast•Muscle Growth•Muscle/Strength•Public Nudity•Butt Growth•Increased Libido•Gradual Change•Voice Deepening•Getting Taller•Giants•Forced Growth•Size Increase •M/M

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. 3 parts Added Apr 2022 14k views 5.0 stars (3 votes) 8,409 words •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

The simulated universe by Thorn A group of men play a new board game that can simulate a “universe” where they play as trailblazers and are granted boons, which could lead to a few…enhancements. 6 parts Added Jul 2023 9,820 views 4.9 stars (24 votes) 26k words •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Muscle Breast•Muscle Growth•Voluptuous Men•Butt Growth•Belly Growth•Increased Libido•Foot Growth•Gradual Change•Transformation•Getting Taller•Plausible Size Difference•Size Increase•Getting Hairy•Inflation•Age Difference•Father/Son •M/M/M

The six pack by Cris Kane Returning from a Mexican vacation, a gay couple bring back a mysterious drink for their friends to try, bringing on some changes for the group of friends that require a great deal of getting used to. 9 parts Added Sep 2018 29k views 4.8 stars (13 votes) 39k words (#96) •Cock Growth•Cock Shrinking•Huge Cock•Gender Swap•Butch-to-Fem•Other Mental Changes•Straight to Gay•Muscle Growth•Muscle/Strength•Butt Growth•Belly Growth•Increased Libido•Getting Handsomer•Gradual Change•Transformation•Getting Taller•Size Decrease•Size Increase•Age Progression•Age Regression•Race/Ethnicity Change•Getting Hairy•Getting Fatter•Destruction/Violence •M/M•M/M/M

Size matters by BigManBigBelly An earnest and passionate top’s deficit leaves his bottom hook-up frustrated, but when the bottom lets slip his desire for more size, his wish comes true with ironic consequences. The word ‘grow’ becomes very triggering for him. Added Jan 2022 11k views 4.8 stars (14 votes) 3,551 words •Cock Growth•Huge Balls•Huge Cock•Muscle Growth•Butt Growth•Foot Growth•Gradual Change•Giants•Size Increase•Destruction/Violence•Humiliation•Nonconsensual change •M•M/M

Spare parts by YellowJester After being disfigured in an accident, Al learns that he doesn’t need his old body or face when he can simply copy the best features of those around him. Added Aug 2022 5,183 views 5.0 stars (10 votes) 3,378 words •Cock Growth•Straight to Gay•Muscle Growth•Butt Growth•Increased Libido•Getting Handsomer•Gradual Change•Voice Deepening•Getting Taller•Size Increase •M/M

Spice up your life by Musclesaber Roommates Sam and Collin try to return to a life of normalcy after the pandemic. Trying to have a get together with friends, Sam buys a new spice pack at the store that has some surprises in store for the pair. 8 parts Added Feb 2021 25k views 5.0 stars (21 votes) 22k words •Cock Growth•Huge Cock•Muscle Growth•Butt Growth•Belly Growth•Getting Taller•Fourth of July•Set during the Pandemic •M/M

Spunk and brimstone by BRK Ty is fed up and needs things to change. Then his coworker, Derek, tells him about the little game box on his bookshelf that changed his life… Added Aug 2022 7,450 views 4.6 stars (8 votes) 6,263 words •Cock Growth•Huge Balls•Huge Cock•Hyper Cum•Muscle Growth•Butt Growth•Getting Handsomer•Transformation•Voice Deepening•Tongue Growth•Demons•Incubus/Succubus•Supernatural•Complete •M/M

Stories to tell in the dark by Thorn Sean discovers a book that is filled with some surprising stories. 2 parts Added Apr 2021 16k views 4.9 stars (33 votes) 9,685 words •Cock Growth•Huge Balls•Huge Cock•Muscle Growth•Muscle Gut•Butt Growth•Belly Growth•Voice Deepening•Getting Taller•Size Increase•Getting Fatter•Inflation

T 2

A Tale of Two Brothers: Donnie & Marco by Artotter92 Two brothers end up the unwilling subjects of their father’s science experiments, with some pretty extreme results. Added Jan 2023 8,552 views 4.0 stars (12 votes) 3,937 words •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Muscle•Muscle Breast•Muscle Growth•Muscle/Strength•Butt Growth•Increased Libido•Gradual Change•Transformation•Voice Deepening•Forced Growth•Size Increase•Age Progression•Getting Hairy•Incest•Brothers•Stories with Images •M/M

Toonifying video call by Demonized When a cartoon dick pic starts turning people into hot animated furries, just imagine what a video call could do! Added Aug 2023 1,948 views 5.0 stars (1 vote) 1,296 words •Cock Growth•Ball Growth•Muscle Growth•Butt Growth•Increased Libido•Transformation•Human to Animal/Anthro•Infectious•Anthro/Furry•Complete •M/M

U 2

Under control by MaxMorphs 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. 5 parts Added Apr 2020 37k views 4.9 stars (33 votes) 22k words •Cock Growth•Huge Balls•Huge Cock•Nipple Emissions•Muscle Growth•Muscle/Strength•Butt Growth•Gradual Change•Getting Taller•Size Increase •M/M

Under the knife by screamingmoist An older man desperate for a better body gets more than he bargained for. Added Jul 2023 3,063 views 5.0 stars (1 vote) 5,139 words •Getting Dumber•Straight to Gay•Muscle Growth•Butt Growth•Nonconsensual change •M/M

V 1

The Vale by CockTFBoi When Kurt inherits a remote mansion from his uncle, he decides to spend the summer there with his friends. Andy and Oliver join him at the start of the summer to explore the house, but the place is surrounded by a huge valley located deep in the wilderness far from civilization. As strange events begin to unfold, the trio must figure out what is happening to them. 4 parts Added May 2023 6,396 views 4.9 stars (15 votes) 29k words •Always Hard•Cock Growth•Cock Shrinking•Cock Theft•Cockless•Huge Balls•Ball Growth•Cum Milking•Always Cumming•Hyper Cum•Boytaur•Four Legs•Muscle Growth•Always Shirtless•Public Nudity•Pointy Ears•Voluptuous Men•Butt Growth•Increased Libido•Gradual Change•Transformation•Size Decrease•Hairless•Cock Cage•Dom/Sub•Nonconsensual sex•Restraints•Orcs•Werewolves •M•M/M•M/M/M

W 3

What a dear deer boy by Thatbadwriter Eric’s undersized brother Jayden finally hits his growth spurt—then keeps hitting it. 5 parts Added Feb 2021 23k views 5.0 stars (16 votes) 12k words •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 •M/M

Wrong number by screamingmoist An ambitious young man starts receiving messages from a caller he can’t ignore. Added Apr 2023 6,426 views 4.0 stars (5 votes) 7,301 words •Cock Growth•Public Orgasm•Getting Dumber•Straight to Gay•Muscle Growth•Butt Growth•Humiliation•Nonconsensual change •M/M

WYRD: What You Really Desire by RDR Marco is sick of being a small guy, doing what he can to fix the issue. When hope seems lost, a pop up appears on his computer asking what he really wants as if it were going to give it to him. But what does Marco really want? Added Apr 2021 8,308 views 4.8 stars (9 votes) 1,478 words •Nipple Emissions•Muscle Breast•Muscle Growth•Voluptuous Men•Butt Growth