Addiction

Stories where the character becomes physically addicted to muscle, muscle growth, or the like, as with a drug. Not used for stories involving actual drug addiction to conventional drugs like cocaine, heroin, etc.

  Child of:  Mental Changes. Related tags:  Addiction;Butch-to-Fem;Dom to Sub;Gay to Straight;Getting Dumber;Other Mental Changes;Straight to Gay.

  Tag Group:  Mental Change.

A 1

A.I. by Corwin Tim’s homemade A.I. software decides to help him get huge. 11 parts Added Dec 2013 73k views 4.8 stars (44 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

B 4

Big cat by Growlboys There’s a special substance on the market that’s driving people wild. In need of a fix after ten days without, Sam is told of a brothel where he get it. There he finds Doug, a werecat who’s not having a great life right now. Added Jul 2019 6,260 views 4.0 stars (1 vote) 3,371 words •Cock Growth•Huge Cock•Addiction•Transformation•Destruction/Violence•Anthro/Furry

Blowing up in Hollywood by Aphon Matt eagerly accepted a movie studio executive’s offer to bulk him up for a movie role. What he wasn’t expecting, however, were the dramatic changes his special hormone milk would cause. 3 parts Added Dec 2018 20k views 4.5 stars (24 votes) 2,118 words •Cock Growth•Huge Cock•Hyper Cock•Addiction•Muscle Growth•Muscle/Strength•Getting Hairy•Dom/Sub •M/M

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 18k views 4.9 stars (9 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 brothers by FanTCMan Cory Callahan and his three sibs participate in a secret program, resulting in more muscles, body hair, cock size, and horniness. 8 parts Added Mar 2003 113k views 4.8 stars (94 votes) 23k words •Always Hard•Cock Growth•Huge Cock•Addiction•Straight to Gay•Muscle Growth•Muscle/Strength•Gradual Change•Getting Hairy•Incest•Brothers •t/t•M/t

C 7

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 13k 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

Coach’s big surprise (Revised) by SomeMuscleGuy and MuscleMike Josh is struggling to keep up with the rest of his college wrestling team, and he’s afraid he will not make the cut. Luckily, a former student of his teacher, Coach Smith, is sent a package that’ll make them both become the men they’ve always dreamed of becoming—and more. 5 parts Added May 2023 Updated 29 Jul 2023 49k views 4.8 stars (30 votes) 18k words •Always Hard•Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Self-suck•Public Orgasm•Addiction•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Muscle/Strength•Muscle Worship•Public Nudity•Increased Libido•Transformation•Voice Deepening•Getting Taller•Giants•Size Increase•Getting Hairy•Destruction/Violence•Infectious•Complete •M/M•M/M/M

The company of wolves by Houndfiend When an uncanny man enters the costume shop you’re working at for Halloween and asks if you might be able to help him find what he needs, the last thing you expected was that he’d be able to help you with the same problem. A second-person POV story for the Halloween season. Added Oct 2023 1,703 views 4,102 words •Always Hard•Cum inflation•Cum Milking•Always Cumming•Hyper Cum•Public Orgasm•Addiction•Public Nudity•Man Scent•Dom/Sub•Sex-Slave•Hyper Pheromones•Anthro/Furry•Satyrs•Werewolves•Supernatural•Halloween•Hypnosis•Mind Control•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 15k 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

Cursed cocks by CockTFBoi Marcus is having a horny night in the dorm when an inadvertent wish by his roommate sends him on a path to a new life. 8 parts Added Aug 2020 24k views 4.3 stars (7 votes) 25k words •Cock Growth•Cock Shrinking•Cum inflation•Hyper Cum•Public Orgasm•Female to Male•Addiction•Straight to Gay•Muscle Growth•Man Scent•Increased Libido•Gradual Change•Getting Hairy•Hairless•Nonconsensual change•Hyper Pheromones •M•M/M•M/M/M/...•M/F

The cursed ride by SomeMuscleGuy When Kalos is overcome with a sudden surge of growth on his motorcycle ride with Epsilon, he must get to the city before he becomes too big. Added Feb 2023 8,941 views 4.2 stars (9 votes) 8,330 words •Always Hard•Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Self-suck•Hyper Cum•Multi-abs•Addiction•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Muscle/Strength•Muscle Worship•Public Nudity•Getting Handsomer•Gradual Change•Transformation•Voice Deepening•Getting Taller•Forced Growth•Size Increase•Destruction/Violence•Dom/Sub•Nonconsensual change•Complete •M/M

Curses and consequences by BRK Reading this story is a bad idea, but you can’t resist now that you know it’s cursed. Added Sep 2021 12k views 4.7 stars (24 votes) 1,456 words •Always Hard•Cock Growth•Huge Cock•Self-suck•Always Cumming•Hyper Cum•Multi-abs•Multiarm•Multilimb•Addiction•Increased Libido•Gradual Change•Getting Taller•Retcon•Social Media•Supernatural•Complete

D 1

Drug test by Also Known As 8 parts Added May 2011 52k views 4.8 stars (19 votes) 16k words •Cock Growth•Huge Cock•Cum inflation•Addiction•Muscle Growth•Muscle/Strength•Size Increase

F 2

FertiliGro by BeastCZ FertiliGro, a new fertility supplement, promises improved virility and sexual experience in men—though people don’t realize just how much the little capsules will change their life. 2 parts Added Feb 2020 14k views 4.3 stars (9 votes) 1,729 words •Always Hard•Cock Growth•Huge Cock•Addiction•Straight to Gay•Muscle Growth•Muscle/Strength•Getting Hairy•Bisexual•Hetero Sex

Finding destiny by FanTCMan Kyle and Derek embark on their quest for muscle, aided by gym owner Mike. Added Apr 2005 16k views 4.5 stars (10 votes) 6,537 words •Addiction•Muscle Growth•Muscle/Strength•Gradual Change•Getting Hairy•Nonconsensual change •M/M

G 1

Grow gravity by Unknown A recipient of wish-granted morphing abilities decides to see how far he can go changing his buddy Dave. Added Aug 2003 31k views 4.2 stars (15 votes) 3,249 words •Cock Growth•Hyper Cock•Addiction•Hyper Muscle•Muscle Growth•Muscle/Strength•Giants•Size Increase•Immortality •M/M

H 1

Hank and Greyson by Greggrth Two hikers get lost in the woods and stumble upon a kindly man in his house who offers them a place to rest and some of his homemade treats. What could go wrong? 3 parts Added Apr 2023 Updated 24 Jun 2023 14k views 5.0 stars (8 votes) 14k words •Cock Growth•Addiction•Hyper Muscle•Muscle Growth•Muscle Gut•Belly Growth•Getting Taller•Giants•Size Increase•Mind Control •M/M

I 2

Irresistible immobility by SomeMuscleGuy and BawlzyS James awakens to find himself strapped to a table in an ominous room with a masked, muscular man who has more than enough candy to share. This candy has some massive side effects, whether James wants it or not. Added Oct 2022 16k views 4.8 stars (16 votes) 7,662 words •Always Hard•Cock Growth•Huge Cock•Hyper Cock•Hyper Cum•Multi-abs•Addiction•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Muscle Worship•Transformation•Voice Deepening•Getting Taller•Giants•Forced Growth•Size Increase•Destruction/Violence•Nonconsensual change•Restraints•Halloween•Complete•Stories with Images •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 Updated 11 Mar 2023 22k 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

L 1

Lumberjacked by Krisiar 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. 4 parts Added Aug 2011 Updated 6 Oct 2011 96k views 4.6 stars (29 votes) 12k words •Cock Growth•Huge Cock•Hyper Cock•Prehensile Cock•Self-suck•Nipple Emissions•Multi-abs•Addiction•Muscle Growth•Muscle/Strength•Getting Handsomer•Getting Hairy •M/M

M 1

Meat by Mikeytron You are what you eat. A horror story for Halloween. Added Oct 2021 12k views 4.9 stars (46 votes) 5,527 words •Cock Growth•Hyper Cock•Addiction•Hyper Strength•Immobility•Muscle Growth•Muscle/Strength•Gradual Change•Halloween•Complete •NS

N 1

The new guy by Also Known As A new employee causes pleasant though potentially cum-plicated problems. 8 parts Added Jun 2019 Updated 24 Jun 2023 39k views 4.8 stars (44 votes) 39k words •Always Hard•Cock Growth•Huge Cock•Hyper Cum•Addiction•Muscle Growth•Muscle/Strength•Getting Handsomer•Nonconsensual change•Infectious •M/M•M/M/M

O 3

Omega cursed: An alpha touch side story by Caliburn Best friends Ryan and Sam finally get to enjoy a much-anticipated camping trip. However, Sam has being acting odd ever since they crossed paths with that man in the gas station. Maybe the weird tattoo that suddenly appeared on Sam’s buttcheek has something to do with it. Added Jun 2022 12k views 4.7 stars (22 votes) 8,604 words •Cock Growth•Huge Balls•Huge Cock•Addiction•Straight to Gay•Muscle Growth•Muscle/Strength•Man Scent•Increased Libido•Foot Growth•Getting Handsomer•Gradual Change•Voice Deepening•Getting Taller•Size Increase•Getting Hairy•Nonconsensual change•Nonconsensual sex•Hyper Pheromones•Infectious •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 Updated 20 May 2023 56k views 4.9 stars (60 votes) 48k words (#73) •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

An overwhelming Friday by Houndfiend Pecos has had a difficult few days as he struggles to come to terms with an overwhelming and very surprising new addition.  Added Oct 2023 2,658 views 4.4 stars (10 votes) 2,343 words •Cock Growth•Huge Balls•Ball Growth•Self-suck•Cum inflation•Cum Milking•Hyper Cum•Addiction•Transformation•Human to Animal/Anthro•Getting Hairy•Werewolves •M

P 2

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 Updated 3 Dec 2022 24k 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 pump by UberPump A young man and his wife find themselves at the mercy of a cock pump.  He's already quite big at 9 inches long, but how much bigger can he go and will they find a limit to his size? 2 parts Added Jan 2023 Updated 1 Apr 2023 12k views 4.6 stars (17 votes) 7,269 words •Cock Growth•Cock Pumping•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Cum inflation•Cum Milking•Hyper Cum•Addiction•Increased Libido•Forced Growth•Inflation•Bisexual•Hetero Sex •M/F•M/F/F

R 3

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 36k views 4.8 stars (57 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

Red pills by MaxMorphs A struggling college student and part-time stripper is introduced to Red Pills, which are supposed to be the one dick-growth pills that actually work. He’s skeptical—at first. (Chapters 1-7 revised as of summer 2019.) 19 parts Added Jan 2017 Updated 27 Mar 2021 58k views 4.7 stars (21 votes) 54k words (#62) •Cock Growth•Huge Cock•Hyper Cock•Addiction•Hyper Muscle•Immobility•Muscle Growth•Muscle Gut•Muscle/Strength•Getting Taller•Plausible Size Difference•Size Increase•Getting Hairy •M/M•M/M/M

The risk by Marc Adrien Godin Admonished by his now ex-girlfriend to “take a risk”, Sam enrolls in a drug trial. Added Jul 2006 14k views 4.8 stars (4 votes) 6,728 words •Cock Growth•Huge Cock•Addiction•Other Mental Changes•Straight to Gay•Muscle Growth•Muscle/Strength•Increased Libido•Nonconsensual sex

S 2

Silicone addiction by Lionel E. Linklander Mark loves to masturbate to guys with siliconed cocks but he decides to take it one step further and inject himself with silicone. He eventually takes his addiction a lot to far. How will his friend feel about his increase in size? Added Jul 2023 3,717 views 4.6 stars (9 votes) 2,920 words •Cock Growth•Cock Pumping•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Addiction•Immobility •M/M

It was a dark night by InflatedMuscle Gym rat Dane has an encounter with an alien symbiote, complicating not only his own life but his friends’ as well. 5 parts Added Oct 2022 Updated 15 Oct 2022 13k views 4.8 stars (16 votes) 34k words •Addiction•Straight to Gay•Hyper Muscle•Muscle Growth•Muscle/Strength•Nonconsensual change•Aliens•Symbiotes •M/M

T 2

The training program by BRK Recruited to take part in an intense and highly selective three-week LEO training program, Texas Ranger Dusty thinks he and his fellow trainees are in for a lot of hard work and conditioning. What he doesn’t know is what exactly these elite law-enforcement men are being trained for. 5 parts Added Aug 2021 13k views 4.4 stars (9 votes) 8,850 words •Always Hard•Cock Growth•Self-suck•Hyper Cum•Addiction•Other Mental Changes•Straight to Gay•Muscle Growth•Muscle/Strength•Always Shirtless•Increased Libido•Getting Handsomer•Gradual Change•Transformation•Getting Taller•Plausible Size Difference•Size Increase•Getting Hairy•Dom/Sub•Nonconsensual change•Sex-Slave•Aliens•Complete •M/M•M/M/M•M/M/M/...

Twelve steps back by FanTCMan Ian pursued working out as a way of chasing off his inner demons. Then he heard about a serum that seemed to make you not just bigger, but enhanced everything about you that was masculine and sexy. And if it made you horny too, well, that was fine by him. 9 parts Added Nov 2003 Updated 30 Mar 2018 33k views 4.8 stars (19 votes) 33k words •Cock Growth•Huge Balls•Huge Cock•Addiction•Other Mental Changes•Straight to Gay•Muscle Growth•Muscle/Strength•Muscle Worship•Increased Libido•Getting Handsomer •M/M

U 1

An unexpected inflation by UberPump A college athlete named Keith and his friends discover what it feels like to enlarge their cock and balls with the mysterious device Keith ordered off the dark web. When things go awry, however, their packages get huge. Keith and his friends go on a massive journey of cock growth, bloated balls, and near exploding junk as they inflate their man parts to their absolute limit. 41 parts Added Apr 2020 Updated 10 Jun 2023 123k views 4.9 stars (60 votes) 99k words (#24) •Cock Growth•Cock Pumping•Cockfucking•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Cum inflation•Cum Milking•Hyper Cum•Public Orgasm•Addiction•Straight to Gay•Hyper Muscle•Pec Fucking•Immobility•Muscle Growth•Muscle/Strength•Public Nudity•Increased Libido•Breast Expansion•Getting Handsomer•Voice Deepening•Getting Taller•Forced Growth•Size Increase•Inflation•App•Nanotech•Incest•Brothers•Bisexual•Hetero Sex•Nonconsensual change•Bodily Fluids•Dildos/Toys•Infectious •M/M•M/M/M•M/M/F

V 1

Vice (Sometimes drugs offer more than a high) by Tereshky Jack was a drug kingpin of sorts. Like any potent drug, people craved it, they came to him, offered him their life’s treasures and he gave them their fix. In a world where usually only the strongest survive and only the smartest staid on top, he was doing quite well for himself and living an easy life. There were no rival drug lords because what he had to offer nobody else could give. His drug came from within. 5 parts Added Jun 2018 Updated 23 Nov 2019 44k views 4.6 stars (37 votes) 12k words •Cock Growth•Huge Balls•Hyper Cock•Self-suck•Cum inflation•Cum Milking•Hyper Cum•Addiction•Immobility•Muscle Growth•Muscle/Strength•Belly Growth•Size Increase•First Time/Virgin•Nonconsensual change •M/M

Y 1

Year of the ox by Marceau Little Wolf Two brothers’ ailing dairy farm experiences a sudden change after they try an unconventional feeding method. Added Jul 2021 9,838 views 4.0 stars (11 votes) 1,801 words •Cock Growth•Huge Cock•Hyper Cock•Nipple Emissions•Multicock•Addiction•Muscle Breast•Muscle Growth•Muscle/Strength•Belly Growth•Transformation•Giants•Size Increase•Human to Animal/Anthro•Nonconsensual change