Space Travel

Stories involving space travel, spaceships, and so on, whether by humans or aliens.

  Child of:  Science Fiction. Related tags:  Nonhuman;Space Travel;Time Travel.

  Tag Group:  Scifi.

B 4

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 •M/M

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 •M/M

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 •M/M•M/M/M/...

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 •M/M•M/M/M•M/M/M/...

C 1

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 •M•M/M•M/M/M

E 3

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 •M/M•M/M/M

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 •M/M

F 1

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 •M/M•M/M/M/...

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 5,286 views 4.3 stars (3 votes) 5,277 words •Muscle Growth•Space Travel•Time Travel•Supernatural •M/M

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 9,167 views 5.0 stars (4 votes) 1,909 words •Replication•Getting Taller•Selfcest•Merging•Space Travel•Set in the Future •M/M•M/M/M•M/M/M/...

L 1

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 •M/M

M 2

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 8,352 views 4.8 stars (4 votes) 3,970 words •Muscle/Strength•Stretchy•Aliens•Space Travel•Set in the Future

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 1,497 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 •M•M/M

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 1,791 views 2,564 words •Cock Growth•Huge Cock•Replication•Public Nudity•Mouthcock•Incest•Brothers•Selfcest•Nonconsensual change•Space Travel•April Fool’s Day •M/M

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 4,775 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 •M/M

P 1

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 •M

S 4

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 •M/M

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 12k 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 •M/M

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 8,717 views 4.1 stars (8 votes) 2,338 words •Four Legs•Multiarm•Multilimb•Replication•Selfcest•Space Travel•Set in the Future

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

T 2

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 •M/M

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 •M/M•M/M/M/...•t/t•M/t

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 8,462 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 •M/M

W 1

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 •M/M