Gay Science Fiction Stories

GayDemon's gay porn library: in this story category you can find erotic Sci-Fi stories involving sex in futuristic settings.

9.8
17 Votes

An unplanned life (ch. 23)

Story by PCLatex

29 Mar 2023 646 Readers comments 9 Min Read

The final Chapter in this story. Poal, Alexei, Mede and Condoin are reminded that while they are not aging as rapidly as their unmodified contemporaries, there will come a time when they have outlived those that know, love and support them ...

Topics: Anal Sex, Bondage, Sci-Fi, Oral & Blowjobs, Body Modification

5.0
23 Votes

Turned into a muscle jock

Story by Oxin

14 Mar 2023 4190 Readers comments 4 Min Read

A normal straight guy turned into a muscle jock, receiving a price for his obedience.

Topics: Muscle, Straight Men, Hypnotized, Transformation, Dumb Jock

8.7
15 Votes

Male Pregnancy Tales (ch. 9)

Story by Gazzaq

26 Feb 2023 1752 Readers comments 11 Min Read

Nathan and Sergeant Chance are pregnant again. But will they get back together?

Topics: Relationship, Sci-Fi, Male Pregnancy

9.1
4 Votes

The Agent 99 Project

Story by Phaggotry

23 Feb 2023 1526 Readers comments 16 Min Read

Agent Diego P. Fidel is exposed to double-crossing agent and a time travel supervillain.

Topics: Latin Men, Forced, Armpits, Mystery & Crime, Sci-Fi, Superhero, Co-worker, Twink, Age Difference, Rape

9.6
7 Votes

The Super Jock Sluts (ch. 4)

Story by Sky Larkin

23 Feb 2023 2984 Readers comments 31 Min Read

Duke transforms into Apex to fight crime and fuck guys, but stumbles across a drug deal.

Topics: Muscle, Public Sex, Big Dick, Interracial, Jock, Drugs, Superhero, Transformation, Big Balls, Bubble Butt, Spit Roasting, Cum Denial

9.2
54 Votes

Timestopper

Story by Vano's Stories

8 Feb 2023 2259 Readers comments 24 Min Read

College freshman Zach stumbles across a strange store in his local mall.

Topics: College, Cum, Fantasy, Bareback, Sci-Fi, Magic

9.3
63 Votes

Nate's Transformation

Story by DickDork

24 Dec 2022 8546 Readers comments 28 Min Read

Nate finally succumbs to the temptations of visiting a local rubber store...but ends up getting much more personal and hands on treatment than he was expecting, leading to a far more permanent solution.

Topics: Poppers, Forced, Rubber, Sci-Fi, Transformation, Mind Control, Master & Slave, Submission

9.6
28 Votes

The Cycle of Endless Pleasure

Story by Thomas Hardt

19 Oct 2022 3632 Readers comments 29 Min Read

All Eric wanted was a romantic getaway with his husband, but he gets stuck in a time loop, forced to repeat the same sex over and over again. He tries to escape his reality and quickly realizes that things are much weirder than he initially thought.

Topics: Breeding, Milking, Bareback, Sci-Fi, Rape, Jockstraps, Horror

9.1
4 Votes

Swopped Bodies

Story by PCLatex

18 Oct 2022 497 Readers comments 90 Min Read

Len, a would be Transwoman, gets his wish thanks to some alien technology when he and his lesbian girlfriend Liz, a would be Transman, get to swop bodies. The only problem is they are now 'tied' to each other, yet still both Gay and Lesbian -- unless together. As others also swop, things get complicated ...

Topics: Anal Sex, Bondage, Transgender, Rubber, Sci-Fi, MTF, FTM, Latex

9.2
51 Votes

Halloween Series 2022 (ch. 3)

Story by Grant

4 Oct 2022 1154 Readers comments 20 Min Read

The Cave - Charles staggered to his feet and winced at the pain in his side. He pulled his hand away seeing it covered in his blood. He needed medical attention and soon, otherwise he would be like his fellow soldiers, another statistic to this horrible war.

Topics: Fiction, Sci-Fi, Sex, Halloween

9.0
38 Votes

Orbital Love

Story by Hunknown

30 Sep 2022 1827 Readers comments 18 Min Read

After an emergency evacuation, Andros is the only man left at Sky, the first and only orbital station ever built by the mankind. 'Sky is falling', the orbital station is doomed, and Andros with it, but he doesn't care, as no one will miss him. But... is it so?

Topics: Anal Sex, Romance, First Time, Sci-Fi, Virgin, Oral & Blowjobs, Illustrated

9.4
25 Votes

The Silicon Commando

Story by PCLatex

29 Aug 2022 1888 Readers comments 56 Min Read

When Captain Niall Coventry's life partner is captured by the Danog and transformed into a latex sex slave, their lives are changed forever. But the Danog have made a fatal mistake, Niall has himself transformed and leads a special task force of the rescued sex slaves to sabotage the Danog's home bases and bring to an end their ravages of human colonies ...

Topics: Bondage, Rubber, Sci-Fi, Transformation, Sex, Aliens, Fucking, Latex

8.3
48 Votes

Gay Encounters of The Third Kind

Story by Bert LaVey

26 Aug 2022 2911 Readers comments 7 Min Read

He was at the busstop. He was so hot my dick started getting hard in my pants and he was flagging me down! This black guy had everything! And everything I WANTED when I saw how big his crotch was! But he couldn't be gay, could he? He had missed his bus out of town and needed a place for the night and was willing to pay a few bucks! Maye we could work out a deal! I told him 'no problem-bo!'

Topics: Black Men, Arab, Anal Sex, Muscle, Straight Men, Big Dick, Interracial, Sci-Fi, Oral & Blowjobs, Ass to Mouth, Turkish

8.8
8 Votes

Inside His Head (ch. 3)

Story by Ryan Jones

12 Aug 2022 397 Readers comments 38 Min Read

After that last message (see chapter 2) we were a little bit in shock. What now? Our relationship is getting stronger and stronger as the days go by but the outside influences, mainly coming from who knows where, are a bit of a disruption! This all comes to a unique ending with our triad finding out the true purpose!

Topics: Romance, First Time, Sci-Fi, Age Difference, Love

6.5
10 Votes

Probed in Space

Story by GreatBallzNCock

9 Aug 2022 632 Readers comments 2 Min Read

In a far off galaxy in the present, a UFO makes it’s way along many planets and stars. It’s occupants on the other hand do not care for stars or planets. No, these unearthly beggars just want to plant their seed in as many times as they can in any form of crevice they can get their hands on. With a little probing they can’t go wrong.

Topics: Bondage, Sci-Fi

8.2
37 Votes

Becoming Wesker's Experiment

Story by Layla

5 Aug 2022 4410 Readers comments 7 Min Read

Chris Redfield is the subject of Wesker's debauched experiment where he was reduced to nothing but a muscle meat for his pleasure

Topics: Muscle, Cop, Sci-Fi, Master & Slave, Submission, Nipple Play

8.8
71 Votes

Experiments Straight Guys (ch. 2)

Story by Jacksonville

3 Aug 2022 9505 Readers comments 10 Min Read

After Nolan and his friend return home from the Alien ship there seem not to be able to return to normal life.

Topics: Straight Men, Breeding, Rape, Male Pregnancy, Aliens, Horror, Footballer

8.7
36 Votes

Drone, Inc

Story by P.J.

29 Jul 2022 1880 Readers comments 14 Min Read

Let Fastos the alien take you behind the scenes at DRONE, INC., the galaxy’s hottest manufacturer of realistic sex drones

Topics: Abduction, Sci-Fi, Transformation, Horror

9.8
37 Votes

The Differing (ch. 3)

Story by Grant

25 Jul 2022 937 Readers comments 86 Min Read

A continuation of the story about Corbett and Duncan and their search for the meaning behind the relics.

Topics: Anal Sex, Fiction, Sci-Fi, Oral & Blowjobs

7.2
15 Votes

The Throb-Warehouse

Story by GreatBallzNCock

20 Jul 2022 1536 Readers comments 3 Min Read

When a new global product causes chaos amongst human kind.

Topics: Anal Sex, Muscle, Sci-Fi, Oral & Blowjobs, Body Modification

9.1
41 Votes

Life Changer

Story by PCLatex

14 Jul 2022 3761 Readers comments 13 Min Read

Jim and Dennis have bought an old house which they plan to renovate. In the process they discover it has a very well equipped 'fetish dungeon' beneath it and, being into latex and bondage themselves, invite their friends -- The Gang -- round to explore it with them. The discovery of a very strange device leads to an unexpected and permanent change for both of them ...

Topics: Anal Sex, Bondage, Dildo, Rubber, Sci-Fi, Oral & Blowjobs, Body Modification, Latex

9.3
34 Votes

An Experiment In Control

Story by PCLatex

10 Jul 2022 5921 Readers comments 31 Min Read

Joe's fantasies become real when he has to leave home and moves in with his mentor at university. Short of money, he takes a job in a research lab focussed on mind control ...

Topics: Anal Sex, Bondage, Rubber, Sci-Fi, Mind Control, Oral & Blowjobs, Fucking, Latex

9.3
32 Votes

A treatment for my ADHD

Story by PCLatex

8 Jul 2022 3539 Readers comments 70 Min Read

Suffering from ADHD sucks, especially if you are above average intelligence, so when Jason is finally offered a way to beat it, and realise his potential, he opens a door into a whole new life ...

Topics: Bondage, Rubber, Sci-Fi, Sex, Fucking

9.2
9 Votes

The Hidden Chateau (ch. 15)

Story by PCLatex

23 Jun 2022 507 Readers comments 17 Min Read

The Sardar reminds Jack of an anniversary, and a celebration is arranged. Jack and Rod find themselves at the centre of a bondage orgy. With the community now fully integrated, settled and happy, they can look forward to a very happy future.

Topics: Anal Sex, Bondage, Rubber, Sci-Fi, Oral & Blowjobs, Aliens, Fucking, Latex

9.6
10 Votes

In the Neon Mist (ch. 2)

Story by Caleb

26 May 2022 861 Readers comments 12 Min Read

As Will searches for answers, a deadly conspiracy makes itself known: an intensely erotic encounter years in the making, murder, mayhem, and a little ABBA. Surrender yourself, at your own risk, to the Neon Mist.

Topics: Romance, Coercion, Sci-Fi, Mind Control, Sex, Fucking

9.6
83 Votes

When the World Changed (ch. 3)

Story by slave mark

12 Apr 2022 1777 Readers comments 12 Min Read

CHAPTER 3 - It is the year 2070 and it is a whole different world. A drug that cures every disease has now caused my lover and me to be enslaved to the top jock on campus. The slaves are now split up while the Master takes slave paul to a sex shop.

Topics: Bondage, Punishment, Alpha Male, Sci-Fi, Master & Slave, Domination, BDSM