Stories involving space travel, spaceships, and so on, whether by humans or aliens.
Related: Nonhuman; Time Travel.
Child of: Science Fiction.
Top Stories: “Empire”; “Basically a god”; “Fortitude”; “Enhanced muscle and futuristic porn”; “The shape of things to come”.
Recently Updated: “Empire”.
18 stories found. Total word count: 542,700.
- B.D.E. by Ziel Alien Balls Cock CockUp HyCock HyCum Space 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 3,531 words 13,663 views 3.8 stars (5 votes)
- Basically a god by CurlyJin Balls Bi CockUp Fly Giant Het HyCock HyCum Lycra SizeUp Space Super Taller What do you do when the kid you bullied in high school becomes a god? Added Jul 2016 Updated Jun 2019 9 parts 31,027 words 62,551 views 4.5 stars (21 votes)
- Beyond contact by BRK XAbs XArms XCock XLeg XLimb 3Legs Alien Rep Space 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. Added Jun 2003 3 parts 1,437 words 13,300 views 4.5 stars (6 votes)
- Boytaurs from Outer Space! by BRK XArms XCock XLeg XLimb 4Legs Alien Btaur Cock Musc MuscUp Space Twins 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. Added Jun 2015 Updated Oct 2016 6 parts 13,050 words 12,983 views 4.4 stars (16 votes)
- Empire by LenZelig 2Gay AgeDiff Alien Beast Bi Bro Cock CockUp Dad Het Mind Musc MuscUp Nonc Self Share SizeUp Slave Space Taller Tksg Twins Virgin Series 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. Added Apr 2019 Updated May 2021 40 parts 365,561 words 113,660 views 4.8 stars (38 votes)
- Enhanced muscle and futuristic porn by Marquis de Rent Cock CockUp HyCock Immob Musc MuscUp PSD SizeUp Space Tf In a futuristic space convoy, a young doctor builds his career on groundbreaking male enhancements. Added Sep 2016 5 parts 25,251 words 25,307 views 4.4 stars (23 votes)
- Exploring Glen’s inner spaces by Just Gay Sex XCock Mcock Space Added Oct 2010 2 parts 2,329 words 10,118 views
- Gym of 1000 studs by LorneLyon MuscUp Space Supn Time 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. Added Mar 2020 2 parts 5,277 words 2,946 views
- Means of escape by BRK Alien Musc Space Str 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 3,970 words 6,745 views
- The shape of things to come by Mykkhal Alien Goo Shift Space Tf The growing intimacy between Tom and Harry is disrupted by the revelation that Harry isn’t who—or what—he appears to be. Added Mar 2003 13 parts 31,913 words 15,591 views 4.5 stars (6 votes)
- Space clones by Josh Dugan XArms XLimb 4Legs Rep Space A brilliant cousin, like his spaceship, is full of himself, but there's room for one more. Added Nov 1998 2,338 words 6,901 views 4.1 stars (8 votes)
- Super Hard Planet Champions by BRK Alien Lycra Musc MuscUp Rep SizeUp Space Twins 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. Added Aug 2017 Updated May 2018 3 parts 18,764 words 10,825 views 4.3 stars (6 votes)
- Toy story by LenZelig AgeDiff Andr Dad Musc MuscUp Space Twins 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. Added Jul 2002 2 parts 6,947 words 23,793 views 5.0 stars (49 votes)