Scifi Tag Group

Stories that fall into the tag group “Scifi”.

  Subtags: Aliens;Androids/Cyborgs;Space Travel;Symbiotes;Time Travel.

A 7

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

Across the metaverse by BRK In a corner of a bustling shopping center parking lot, Joe finds something that shouldn’t be there. But… the sexy, three-legged, planet-saving hero Preter Garadin couldn’t possibly be real. Could he? 2 parts Added Jan 2023 1,141 views 4.8 stars (6 votes) 5,918 words •Multileg•Multilimb•Three Legs•Aliens

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 23k views 4.8 stars (28 votes) 4,977 words •Cock Growth•Ball Growth•Huge Balls•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

Alien implants (revised) by WordShop 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… 2 parts Added Nov 2017 23k views 3.7 stars (15 votes) 3,079 words •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Getting Hairy•Symbiotes

Alien tormentors by James Fourlegs Unseen aliens juice the daylights out of their captives. Added Dec 2004 23k views 4.3 stars (6 votes) 1,004 words •Huge Cock•Multicock•Multiarm•Multileg•Multilimb•Replication•Muscle Growth•Muscle/Strength•Selfcest•Aliens

Alone at home by BigLutris and Daenotis When a humaniform android becomes aroused during a morning reverie, he might have more options to bring himself relief than ordinary folks. Added Nov 2019 5,071 views 3.3 stars (6 votes) 1,427 words •Self-suck•Detachable•Androids/Cyborgs

Among us by BRK Nathan Yates is an ordinary boy who’s just graduated from high school and whose biggest concern in life in trying to figure out why the hottest guy in school is making passes at him. That is, until he’s thrown into a story he knows intimately from his favorite cult graphic novels, and becomes embroiled in a conflict that reaches across worlds and universes. 15 parts Added May 2017 26k views 4.4 stars (17 votes) 52k words (#62) •Huge Cock•Muscle/Strength•Amputation•Human to Animal/Anthro•Aliens•Werewolves•Mind Control

B 11

B.D.E. by Ziel While orbiting a nearby planet, the ship detects an unusual energy signature. Parker and Quill are sent down to investigate, but things take a turn for the smutty when Parker’s suit is compromised. Added Aug 2018 20k views 4.0 stars (7 votes) 3,531 words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Hyper Cum•Aliens•Space Travel•Set in the Future

Basically a god by CurlyJin What do you do when the kid you bullied in high school becomes a god? 9 parts Added Jul 2016 81k views 4.2 stars (24 votes) 31k words •Cock Growth•Huge Balls•Hyper Cock•Hyper Cum•Getting Taller•Giants•Size Increase•Bisexual•Hetero Sex•Lycra/Spandex•Space Travel•Superhero/Supervillain•Flying•X-Ray Vision

Beyond contact by BRK The trick to contacting aliens turns out to be sending only your mind. What you look like when you get there, though, isn’t quite what you’re used to. 3 parts Added Jun 2003 17k views 3.3 stars (9 votes) 1,437 words •Multi-abs•Multicock•Multiarm•Multileg•Multilimb•Three Legs•Replication•Selfcest•Aliens•Space Travel•Complete

The Black Knights by Meddler Incs Once you join the infamous college team known as the Black Knights, there are only three things that matter: lifting, fucking, and football. 4 parts Added Aug 2016 23k views 4.6 stars (27 votes) 6,479 words •Muscle Growth•Muscle/Strength•Symbiotes

The Black Knights: Brandon by Meddler Incs “So ya wanna be a jock, bro?” Baker asks. Yeah, Brandon so wants to be a jock. Added Sep 2018 11k views 4.5 stars (6 votes) 645 words •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Symbiotes

The Black Knights: Coming home by Meddler Incs When an ex-football player, now a local newspaper reporter, investigates The Black Knights, he gets more than he bargained for. 14 parts Added Oct 2018 20k views 4.9 stars (15 votes) 24k words •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Size Increase•Nonconsensual change•Aliens•Symbiotes

Blink and it’s gone by Double-U Mark is amazed he’s able to land a date with Connor, the unbelievably hot stud who approached him out of nowhere. But things get complicated when it turns out that Connor is not who he appears to be. 4 parts Added Jun 2017 12k views 4.6 stars (7 votes) 8,569 words •Muscle Growth•Muscle/Strength•Aliens

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•Ball Growth•Huge Balls•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

Boytaurs from Outer Space! by BRK Sev, the commander of a Taurian survey mission, judges Earth suitable for cultivating an aggressive alien grain, but the danger to Earth’s ecosystem drives the idealistic Elek to rebel and flee with some valuable equipment. When a conflicted Kiyy chases him, they both encounter the strange inhabitants and discover that humans and Taurians find each other mutually captivating. 6 parts Added Jun 2015 15k views 4.4 stars (16 votes) 13k words •Huge Cock•Multicock•Boytaur•Four Legs•Multiarm•Multileg•Multilimb•Muscle Growth•Muscle/Strength•Incest•Twins•Aliens•Space Travel

Building a species by ArdanWolfe When his homeworld faces annihilation, the sole survivor must find a new species capable of helping him preserve his race. Will he find what he needs on a tiny blue and green planet called Earth? 3 parts Added Jun 2021 6,339 views 5.0 stars (4 votes) 2,562 words •Cock Growth•Male Pregnancy•Transformation•Nonconsensual change•Aliens

Burst by BRK In a sealed-off underground bunker, exposure to a tear in the fabric of space-time created by an illegal energy experiment is producing some interesting changes in the men trapped inside. And on top of everything else, it’s Christmas, and there’s no way they’ll ever see home again… 3 parts Added Dec 2020 11k views 4.6 stars (13 votes) 11k words •Cock Growth•Huge Cock•Multicock•Replication•Other Mental Changes•Hyper Strength•Muscle Growth•Muscle/Strength•Always Shirtless•Stretchy•Getting Handsomer•Transformation•Getting Taller•Size Increase•Selfcest•Aliens•Christmas•Complete

C 5

Cave on the Moon by brazboy First contact? A large cave is identified on the Moon. It is apparently ancient, but also not at all natural. Humans, curious as ever, sent a team of astronauts to investigate it. What they find changes everything, and everyone, forever… 3 parts Added Nov 2021 12k views 4.4 stars (13 votes) 9,726 words •Always Hard•Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Self-suck•Hyper Cum•Public Orgasm•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Muscle/Strength•Increased Libido•Getting Taller•Giants•Plausible Size Difference•Size Decrease•Destruction/Violence•Nonconsensual change•Aliens•Androids/Cyborgs•Space Travel

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 9,517 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

Cockportal by BRK After a Halloween night ambulance ride ends up at the wrong hospital, Ronnie wakes up to find discover that his removed appendix isn’t the only thing that’s different about him. Added Nov 2018 10k views 4.0 stars (5 votes) 4,660 words •Cock Growth•Huge Cock•Aliens•Halloween

Colt chronicles: A form for any occasion by Neltharion5 Added Feb 2010 17k views 3.6 stars (8 votes) 5,218 words •Huge Cock•Multilimb•Muscle Growth•Muscle/Strength•Transformation•Time Travel•Centaurs•Shapeshifting

Cursed compression top by Rurik A cursed compression top will transform its wearer beyond his wildest dreams. 3 parts Added May 2020 13k views 4.5 stars (15 votes) 3,136 words •Muscle Growth•Transformation•Body Suit•Symbiotes

D 1

Double by Natty Soltesz Trying out a friend’s new sex robot. Added Jul 2021 2,795 views 5.0 stars (2 votes) 3,637 words •Bisexual•Androids/Cyborgs

E 4

Empire by LenZelig A massive consolidation of the entire “Bill’s Education” universe, incorporating the previously separately posted “The Surfer”, “The Rescue”, “Spring Break”, “Pickup Trouble”, and “School Days”, “Empire” is the wide-ranging tale of easy transformation and even easier sex across all boundaries—friends, family members, genders, even species—as a fortunate crop of humans stumble into a wider universe of size, muscle, double-digit-length cocks and much, much more and discover the true meaning of shared, radical, uninhibited pleasure. 40 parts Added Apr 2019 133k views 3.7 stars (6 votes) 366k words (#1) •Cock Growth•Huge Cock•Self-suck•Straight to Gay•Muscle Growth•Muscle/Strength•Getting Taller•Size Increase•Age Difference•Bestiality•First Time/Virgin•Incest•Brothers•Father/Son•Twins•Bisexual•Hetero Sex•Nonconsensual change•Sex-Slave•Shared Body•Aliens•Space Travel•Witch/Warlock/Wizard•Thanksgiving•Mind Control•Complete

Enhanced muscle and futuristic porn by Marquis de Rent In a futuristic space convoy, a young doctor builds his career on groundbreaking male enhancements. 5 parts Added Sep 2016 33k views 4.4 stars (28 votes) 25k words •Cock Growth•Huge Cock•Hyper Cock•Female to Male•Immobility•Muscle Growth•Muscle/Strength•Transformation•Plausible Size Difference•Size Increase•Nanotech•Space Travel•Set in the Future

The escape by hyperboi Sam and his brother find themselves taken in their sleep and trapped in some strange warehouse-like space, along with all the other teens in their community. Not only is there no way out, but something is happening to them all... Added Dec 2014 26k views 4.7 stars (21 votes) 3,492 words •Cock Growth•Huge Cock•Hyper Cock•Self-suck•Straight to Gay•Muscle Growth•Muscle/Strength•Incest•Brothers•Twins•Nonconsensual change•Aliens

Exploring Glen’s inner spaces by Just Gay Sex After escaping Belinda’s ray gun blasts by leaping aboard the nearest starship Glen had found himself a stowaway on the famous Phallic Explorer. Whether or not landing on the ultimate male sexual cruise was going to work out for him he had no idea, but as always he enjoyed the initial take off and exit from the system. 2 parts Added Oct 2010 12k views 4.5 stars (2 votes) 2,329 words •Multicock•Mouthcock•Space Travel

F 3

First costume by Cockatrice Luke is invited to a special Halloween party, though he does not know yet just how special that party is going to be. Added Oct 2020 9,347 views 4.9 stars (16 votes) 6,359 words •Cockless•Multihead•Wristfeet•Crotchhead•Detachable•Transformation•Body Suit•Human to Inanimate•Mouthcock•Rubber/Latex•Merging•Androids/Cyborgs•Centaurs•Halloween

Fortitude by BRK 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. 4 parts Added Aug 2009 37k views 4.8 stars (52 votes) 15k words •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Size Increase•Space Travel

Future perfection by Unknown Added May 2003 14k views 4.0 stars (1 vote) 3,416 words •Body Swap•Time Travel

G 1

Gym of 1000 studs by LorneLyon Somewhere there is a special gym, a gym that will allow you to overcome your problems and give you something in return. One day Tobias is on the run for his bullies when he discovers the Gym of 1000 studs. He decides to go in and ends up changing his life. 2 parts Added Mar 2020 5,293 views 4.3 stars (3 votes) 5,277 words •Muscle Growth•Space Travel•Time Travel•Supernatural

H 1

Homeward by BRK Getting home by teleport is tough enough, but it's even more of a hassle when the teleporter is malfunctioning and doesn’t register that you’ve already been reconstructed on the other side. Added Dec 2002 9,179 views 5.0 stars (4 votes) 1,909 words •Replication•Getting Taller•Selfcest•Merging•Space Travel•Set in the Future

L 2

The landing by C.W.P. Mulling the pointlessness of his life on a vacation to Alaska, Chris is thrilled to encounter a pair of extremely well endowed aliens. 3 parts Added Jul 2014 13k views 4.4 stars (12 votes) 7,254 words •Cock Growth•Huge Cock•Aliens•Space Travel

Dragon’s Horde: Lowered into the drink by STrRedWolf Be careful what you drink, because you may become the monster of your dreams before paying the price... your bar tab. Added Oct 2017 10k views 4.0 stars (1 vote) 1,605 words •Huge Cock•Hyper Cock•Multihead•Multiarm•Multilimb•Multipec•Replication•Stacking•Muscle Growth•Muscle/Strength•Giants•Selfcest•Symbiotes•Anthro/Furry•Alcohol

M 8

Matt and his dad by Meddler Incs When Matt comes home to visit his dad, he is forced into being part of The Crew. Added Jun 2020 14k views 4.4 stars (7 votes) 3,343 words •Huge Cock•Straight to Gay•Muscle Growth•Muscle/Strength•Incest•Father/Son•Nonconsensual change•Symbiotes•Hypnosis

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 3,906 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

Means of escape by BRK Even for a randy space marine, life as a sex slave is not your first choice. But it looks like a distinct possibility after days of incarceration on the wrong planet. So when an offer of help arrives, it’s not something you ignore—even if the offer is telepathic and the help involves certain side-effects. Added May 2017 8,365 views 4.8 stars (4 votes) 3,970 words •Muscle/Strength•Stretchy•Aliens•Space Travel•Set in the Future

Megabot, Pinto Roxo, and the Inventor’s superweapon by brazboy Megabot faces the muscle-serum-crazed Inventor—but the real challenge is figuring out how to deal with the villain’s secret superweapon. Added Aug 2022 3,026 views 5.0 stars (3 votes) 3,175 words •Huge Cock•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Size Increase•Nanotech•Androids/Cyborgs•Superhero/Supervillain

MooMilk by Meddler Incs The secrets of the newest workout supplement are about to be revealed. Added Aug 2020 8,272 views 4.6 stars (5 votes) 1,760 words •Nipple Emissions•Muscle Breast•Muscle/Strength•Aliens•Anthro/Furry

MultiGeoff by BRK New recruit Geoff reports for duty on a gigantic space station and learns that his first task is to reshape himself—and not in a figurative sense. Added Aug 2023 1,527 views 5.0 stars (2 votes) 2,556 words •Cock Growth•Huge Balls•Huge Cock•Public Orgasm•Multi-balls•Multicock•Boytaur•Four Legs•Lots of Legs•Multileg•Multilimb•Multitongue•Public Nudity•Merging•Space Travel•Complete•Stories with Images•Set in the Future

Muscle bots by Meddler Incs Have a problem with your device? The Department of Cybernetic Deviations is here to help! 2 parts Added Jan 2018 8,153 views 4.8 stars (5 votes) 1,955 words •Muscle/Strength•Androids/Cyborgs•Set in the Future

Muscle Mice From Mars by Mr. Mouse This is the story of a certain group of anthro alien biker mice and how they went from sexy, strong, and buff to hyper masculine and super strong with a little unintentional help from some old enemies. 2 parts Added Oct 2019 6,189 views 5.0 stars (3 votes) 3,260 words •Cock Growth•Huge Balls•Huge Cock•Hyper Cum•Hyper Muscle•Muscle Growth•Muscle/Strength•Size Increase•Destruction/Violence•Restraints•Aliens•Anthro/Furry

N 1

The night he came by Charles Westfall Thomas encounters alien visitors with equipment even bigger than his. Added Jul 2002 23k views 4.8 stars (5 votes) 7,839 words •Cock Growth•Hyper Cock•Self-suck•Hyper Cum•Muscle Growth•Muscle/Strength•Size Increase•Nanotech•Aliens

O 2

Opportunities and escalations by BRK Brothers Coren and Pranam are diverted from their usual slightly roguish pursuits by an accidental teleport to a highly secure space station. Facing potentially dire accusations, Coren’s pilfering skills put them in possession of a device that might just alter the balance of things—and give Coren a chance to indulge in a bit of mischief aimed at his attention-loving brother. Added Apr 2023 1,804 views 2,564 words •Cock Growth•Huge Cock•Replication•Public Nudity•Mouthcock•Incest•Brothers•Selfcest•Nonconsensual change•Space Travel•April Fool’s Day

The other side by BRK Avery, a randy cargohauler, is piloting his navship through the dimensions between the point A and point B when an unexpected breach sends him into a surreal expanse… where a well-built, winged figure takes a less-than-angelic interest in him. Added Mar 2021 4,789 views 4.9 stars (7 votes) 6,407 words •Cock Growth•Huge Cock•Hyper Cock•Wings•Muscle/Strength•Plausible Size Difference•Space Travel•Centaurs•Mermen•Complete•Set in the Future

P 4

Pan-Galactic Human Fan Club by bluesuedewho Super-straight dude Charley gets abducted by a bunch of human-loving alien hunks. The beefy space bros keep telling him that humans are all naturally obsessed with sculpted muscles and huge dicks, but that’s crazy talk. So what if Charley occasionally slips away to jerk off to the thought of servicing giant alien dicks? That’s totally normal, right? Added Jul 2021 3,403 views 4.6 stars (5 votes) 5,323 words •Huge Cock•Other Mental Changes•Straight to Gay•Muscle/Strength•Plausible Size Difference•Aliens•Androids/Cyborgs

Pollination by Absman420 The beginning of the most erotic alien invasion/muscle growth story… ever! Added Oct 2020 11k views 4.9 stars (17 votes) 5,867 words •Cock Growth•Huge Balls•Huge Cock•Muscle Growth•Muscle/Strength•Plants•Aliens

Pre-trip conditioning by WordShop As humans expand into space in the 22nd century, Gerry takes a job on a mining colony, little anticipating how much the experiience will change him. Added May 2003 12k views 4.8 stars (4 votes) 4,059 words •Muscle/Strength•Getting Hairy•Space Travel•Set in the Future

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 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

Q 1

The queen by Dylan Utah As a big muscle alpha on campus, Peter had been used to admiration and envy. What he didn’t expect was to be captured and used for his growing muscles and cock. Added Aug 2020 12k views 4.3 stars (7 votes) 880 words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Hyper Cum•Immobility•Muscle Growth•Muscle/Strength•Nonconsensual change•Symbiotes

R 3

Recover and repair by jaysize14 Sex in the future is subject to technological advances, but bugs and upgrades will never go away. Added Aug 2015 11k views 5.0 stars (1 vote) 1,574 words •Huge Cock•Androids/Cyborgs•Set in the Future

Retroactive by BRK On the tenth anniversary of his best friend’s unsolved disappearance, a mysterious man offers Geoff the opportunity to see for himself what happened. He knows he shouldn’t trust the stranger, but can he really pass up the chance to learn the truth first-hand? 2 parts Added Jun 2023 1,546 views 5.0 stars (4 votes) 6,723 words •Selfcest•Time Travel

Robopocalypse by Johan Johnson Set in a future where people can purchase a wide range of useful robots commercially, this story is an account of a young man’s first sexual encounter with his, and as an escape into the wild possibilities our future may bring. Added Sep 2012 11k views 3.5 stars (2 votes) 1,373 words •Androids/Cyborgs•Set in the Future

S 15

The Scrotoman by TlaloctheWeirdo A university student’s life is about to change when his best friend, one of the university’s top athletes, stashes a human-like alien in his room. 2 parts Added Apr 2021 5,825 views 4,766 words •Huge Balls•Huge Cock•Muscle/Strength•Aliens

Self-improvement by BRK Cam needs to get the cute guy he’s dosed with a little bit of experimental physio-changing serum to say what he wants in order for the transformations to start. He’s planning to keep things small and subtle, only Aiden isn’t as bashful as he appears, and he’s also just a tiny bit drunk. Added Sep 2018 13k views 4.9 stars (12 votes) 4,175 words •Cock Growth•Huge Cock•Replication•Muscle Growth•Gradual Change•Suggestion•Selfcest•Aliens•Complete

The Servonyx exclusion by BRK Uncovering some corporate skulduggery leads to dire consequences for Beck. Nearly killed in a suspicious crash, he soon finds himself halfway around the world trapped in a physically enhanced pleasure humaniform… in the keeping of a handsome Russian plutocrat. Pleasure is easy to unlock in this new existence, but escape and revenge will be a lot harder to manage. 3 parts Added Jul 2018 10k views 5.0 stars (10 votes) 14k words •Cock Growth•Multiarm•Multilimb•Muscle Growth•Size Increase•Age Difference•Nonconsensual change•Androids/Cyborgs

Shaming the boastful centaur by DracumSum Bill makes a joke, and a Greek goddess makes it real. 4 parts Added Oct 2022 6,874 views 5.0 stars (11 votes) 26k words •Cock Growth•Huge Cock•Self-suck•Hyper Cum•Four Legs•Public Nudity•Gradual Change•Transformation•Human to Animal/Anthro•Getting Hairy•Hairless•Retcon•Time Travel•Centaurs•Pagan gods•Supernatural

The shape of things to come by Mykkhal The growing intimacy between Tom and Harry is disrupted by the revelation that Harry isn’t who—or what—he appears to be. 13 parts Added Mar 2003 18k views 4.7 stars (10 votes) 32k words •Transformation•Aliens•Goo People•Space Travel•Shapeshifting•Set in the Future

The silver alchemist by BRK Alex and Jessie are two apprentice sorcerer-alchemists playing with spells they haven’t quite mastered, when a casting takes an unexpected turn. 2 parts Added Jan 2022 3,450 views 4.8 stars (5 votes) 6,932 words •Transformation•Getting Hairy•Retcon•Time Travel•Witch/Warlock/Wizard•Metabods 25•Invisibility•Complete•19th Century

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 12k views 4.8 stars (16 votes) 34k words •Addiction•Straight to Gay•Hyper Muscle•Muscle Growth•Muscle/Strength•Nonconsensual change•Aliens•Symbiotes

The solitary flesh by Mikeytron A pair of space mercenaries are dispatched to a strange alien world to guard the manufacture of a massive quantity of the medical and cosmetic wonderdrug SynthStem, which allows humans to reshape their bodies. In part one, the stage is set and the stakes are raised. 4 parts Added Sep 2022 13k views 5.0 stars (77 votes) 24k words •Huge Cock•Other Mental Changes•Hyper Muscle•Immobility•Muscle Growth•Muscle/Strength•Gradual Change•Merging•Aliens•Space Travel•Complete•Set in the Future

Space clones by Josh Dugan A brilliant cousin, like his spaceship, is full of himself, but there's room for one more. Added Nov 1998 8,727 views 4.1 stars (8 votes) 2,338 words •Four Legs•Multiarm•Multilimb•Replication•Selfcest•Space Travel•Set in the Future

The spectacular growing saga by West A collection of brief stories about guys discovering their dream bodies in various ways. 8 parts Added Mar 2022 16k views 4.6 stars (15 votes) 12k words •Cock Growth•Cut to Uncut•Cock Shrinking•Ball Growth•Huge Balls•Huge Cock•Hyper Cock•Prehensile Cock•Cum inflation•Hyper Cum•Nipple Emissions•Multi-abs•Multi-balls•Multicock•Multiarm•Multipec•Hyper Muscle•Hyper Strength•Muscle Growth•Muscle Theft•Muscle/Strength•Increased Libido•Getting Taller•Forced Growth•Size Decrease•Size Increase•A.I.-Controlled Change•Retcon•Suggestion•Incest•Brothers•Triplets•Twins•Hyper Pheromones•Infectious•Androids/Cyborgs

Speedo transformation by bruce That castmate in your high school play with the hot cock, great body, and perfect ass has a secret: special Speedos. And he’s very willing to share. Added Feb 2009 59k views 3.9 stars (17 votes) 2,096 words •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Transformation•Symbiotes

The suit life by Sithspawn Max’s housemate Jake creates a protoplasmic suit to heal soldiers in the field and decides to try it out at home. What could possibly go wrong? Added Apr 2022 7,951 views 4.8 stars (19 votes) 5,597 words •Cock Growth•Huge Cock•Muscle Growth•Size Increase•Body Suit•Tongue Growth•Nonconsensual sex•Symbiotes•Superhero/Supervillain•Shapeshifting

Summer breeze by Dave Swim hunk Mike is asked to employ his recently improved body and unstoppable libido in the service of intergalactic peace. Added Jun 2012 13k views 5.0 stars (6 votes) 5,170 words •Cock Growth•Huge Cock•Transformation•Aliens

Super Hard Planet Champions by BRK Logan and his buddies, along with the hot guy from the bowling alley Logan has a crush on, get pulled into a fight to save the universe from the evil Skorth. If only it didn’t involve wearing color-coded Lycra. 3 parts Added Aug 2017 13k views 4.3 stars (6 votes) 19k words •Replication•Muscle Growth•Muscle/Strength•Size Increase•Selfcest•Lycra/Spandex•Aliens•Space Travel

Superstud and Macromale: The Sword of Justice by brazboy Macromale, your ordinary neighborhood hero, hears a villain called Manhunter wants to steal the Sword of Justice, except no one is aware of what exactly that is. 6 parts Added Jul 2022 9,885 views 4.9 stars (12 votes) 26k words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Self-suck•Hyper Cum•Public Orgasm•Hyper Muscle•Hyper Strength•Muscle Growth•Getting Taller•Plausible Size Difference•Size Increase•Superhero/Supervillain

T 6

The takeover by Flex Luthor An alien race employs sleek advertisement to turn Earth's top athletes into a horde of docile bodies in tubes, being pumped of their cum to create an army of supermasculine studs. 3 parts Added Aug 2017 18k views 3.1 stars (8 votes) 3,014 words •Hyper Cock•Muscle Growth•Muscle/Strength•Transformation•Size Increase•Aliens•Mind Control

A taste of aedon by Josef Howard Adams and Evans survive the accidental explosion of their military vessel and land by life pod on the verdant class M planet Aedon. Added Mar 2004 16k views 5.0 stars (6 votes) 3,383 words •Cock Growth•Huge Cock•Straight to Gay•Muscle Growth•Muscle/Strength•Plants•Nonconsensual change•Aliens•Space Travel

The tournament by AG Silver A soldier enters a wrestling competition with an alien, whose touch reveals more than he ever expected. 4 parts Added Aug 2019 9,606 views 4.4 stars (16 votes) 3,164 words •Cock Growth•Huge Balls•Huge Cock•Muscle Growth•Muscle/Strength•Aliens

Toy story by LenZelig During a storm Bob stumbles across a strange webpage offering something called “The Ultimate Sex Machine”. Intrigued, he clicks “order”, expecting maybe a sophisticated sex toy. Instead he gets Randy, a hunk-shaped machine dedicated to ensuring that Bob experiences ultimate sexual possibilities from now on and willing to reshape reality to make it happen. 2 parts Added Jul 2002 30k views 5.0 stars (27 votes) 6,947 words •Muscle Growth•Muscle/Strength•Age Difference•Incest•Father/Son•Twins•Androids/Cyborgs•Space Travel•Complete

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 (8 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

21-year-old scotch by Cris Kane On his 50th birthday, a closeted man enters a gay bar and is given a drink with an unexpected side effect. 9 parts Added Aug 2019 9,684 views 4.7 stars (6 votes) 46k words (#75) •Huge Cock•Muscle/Strength•Age Regression•Time Travel•Witch/Warlock/Wizard

U 1

An unexpected party by TheLegendOfSam Fashion model Zeke gets more than he bargained for at the agency’s annual Halloween party, this year hosted at one of the summer homes of his new billionaire colleague, and finds a whole new meaning for the phrase “sexy costume”… 2 parts Added Oct 2020 5,489 views 4.5 stars (4 votes) 4,699 words •Extra facial features•Multi-abs•Multicock•Multihead•All Legs•Multiarm•Multileg•Multilimb•Three Legs•Multitorso•Replication•Selfcest•Merging•Aliens•Centaurs•Mermen•Supernatural•Halloween

V 1

Vision space by BRK Sent to explore an unknown, derelict spaceship in search of usable technology, a young marine unexpectedly discovers three sexy inhabitants, guardians of a secret no one could have imagined. Added Jun 2021 8,475 views 5.0 stars (11 votes) 6,302 words •Cock Growth•Huge Cock•Hyper Cock•Hyper Muscle•Muscle Growth•Muscle/Strength•Transformation•Getting Taller•Giants•Size Decrease•Size Increase•Age Difference•Aliens•Space Travel•Complete•Set in the Future

W 2

What happens on Venus by Malice Slashlover Garrett has a lot of questions about the Venusians he’s living with as an exchange student, but the one he most wants an answer to is — why do Venusian guys have three cocks? 2 parts Added Jul 2014 10k views 4.8 stars (4 votes) 4,591 words •Multicock•Detachable•Aliens•Space Travel•Set in the Future

A whole new world by MarcusB00 Two siblings, looking for a profit, break into an abandoned facility for potential treasure. Along the way they accidentally open a portal and get sucked in, and one of them get woken up by young dude with muscle powers in a new world. 3 parts Added Nov 2020 9,746 views 5.0 stars (5 votes) 10k words •Cock Growth•Huge Cock•Hyper Cum•Hyper Strength•Muscle Growth•Muscle/Strength•Destruction/Violence•Aliens