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.

8.5
33 Votes

The Vehicle (ch. 3)

Story by BoyToy

20 Oct 2017 2978 Readers comments 4 Min Read

Immediately a bolt of electricity zapped my cock. The metal plates in the tip of the chastity cage sent a bolt through my shaft. Thanks to the catheter the bolt went deep into my body and I couldn't help but let out a gasp of surprise.

Topics: Sci-Fi

6.3
18 Votes

Balls deep thieves (ch. 3)

Story by Pen-ave haven

26 Sep 2017 1499 Readers comments 4 Min Read

The sound of an alarm buzzes from next door, it doesn't wake me cus i wasn't asleep, my mind wondered to the chief, handing me his position as he resined. Its not unherd of, but it certainly wasn't what i was expecting. Granted i have been in the department for some time, and i have the experience needed.

Topics: Sci-Fi

9.2
52 Votes

The First Dive (ch. 3)

Story by Nicky Noxville

24 Sep 2017 3332 Readers comments 10 Min Read

Terry settles into his role as a complete slut for cock.

Topics: Latin Men, Anal Sex, Slut, Sci-Fi, Oral & Blowjobs

8.4
34 Votes

Jason's Dilemma

Story by shiba8

30 Aug 2017 4727 Readers comments 4 Min Read

Jason finds himself in a situation where the human race depends on his self-control.

Topics: Milking, Sci-Fi

8.3
13 Votes

Quantum-G

Story by Bert LaVey

16 Aug 2017 2233 Readers comments 5 Min Read

Quantum-G is a time machine that morphs me into any time and place in history to meet the biggest, rugged, most hard-core men for their first gay sexual experience.

Topics: Rimming, Sci-Fi, Oral & Blowjobs

8.7
29 Votes

sex on planet Proxima b

Story by Mighty Mouth

21 Jul 2017 1851 Readers comments 9 Min Read

As a visiting astronaut to this planet, I got to suck off 200 identical clones, all late teenage boys with big dicks.

Topics: Big Dick, Sci-Fi

6.2
51 Votes

Tentacle fucking

Story by GioCub

27 May 2017 9898 Readers comments 1 Min Read

As he sits in the restroom stall, invisible tentacles from the alien in the next stall slither under the stall over to him.

Topics: Anal Sex, Bathroom, Sci-Fi, Oral & Blowjobs, Sex, Aliens

8.9
23 Votes

Generator

Story by Simon Traum

23 May 2017 2604 Readers comments 28 Min Read

Cosmo bites off more than he can chew with two aggressive, quicksilver lovers.

Topics: Anal Sex, Big Dick, Threesome, Sci-Fi

8.5
10 Votes

The Fall

Story by Kyle Falls

20 May 2017 725 Readers comments 17 Min Read

Not your usual sexual story, based around an apocalypse and one man's journey in the apocalypse. My attempt at something new and trying to write something different. Minimal sex, has very strong themes. Authors note in the story.

Topics: Anal Sex, Sci-Fi

7.7
20 Votes

The sexoids

Story by rubber collector

19 Mar 2017 4782 Readers comments 4 Min Read

Gay young man becomes sex maniac after being exposed to alien spores from seed pod

Topics: Anal Sex, Sci-Fi, Aliens

7.6
14 Votes

Invasion of the Vorlons

Story by rubber collector

6 Mar 2017 3110 Readers comments 5 Min Read

alien beings from another dimension have come to planet earth to taken over all rubberized humanoids to convert them into sexdroids

Topics: Rubber, Sci-Fi, Aliens, Robot

8.6
99 Votes

GEM: Genetically Enhanced Male

Story by Balletboy

17 Jan 2017 7325 Readers comments 15 Min Read

Twins Jake and Aiden are hired to go to a medical testing center and get infected with a disease and monitored. It does not go the way they expected it to

Topics: Doctor, Sci-Fi

7.4
21 Votes

The Rubberdroid Invasion

Story by rubber collector

25 Nov 2016 2974 Readers comments 4 Min Read

rubbery alien beings have landed on earth to collect humans for rubberdroid conversion they have taken human form so that can move among the humans on earth. As they abduct their human specimens for breeding and conversion

Topics: Rubber, Sci-Fi, Aliens, Robot

8.2
11 Votes

Opposites Attract (ch. 10)

Story by wabuck

31 Oct 2016 501 Readers comments 9 Min Read

Joe confesses to Craig about his encounter with Lawrence, but leaves out important details. Their rlationship gets deeper as Craig introduces Joe to his mother.

Topics: Spanking, Sci-Fi

7.2
12 Votes

Pandemic of men (ch. 12)

Story by Pen-ave haven

18 Aug 2016 547 Readers comments 5 Min Read

The dress, the humiliation, all of it just a sick dream. Being alone i threw my phone and whatever else was in reach in frustration and anger, by the time i was finished the room was a reck and i was coughing into a fit. I slid to the floor coughing for a while until it came under control.

Topics: Humiliation, Sci-Fi

7.2
61 Votes

The rubber invasion

Story by rubber collector

18 Aug 2016 11996 Readers comments 4 Min Read

Young man inherits his uncles home and finds a hidden room full of possessed rubber gear

Topics: Rubber, Sci-Fi

8.7
56 Votes

The New Android

Story by Cinaedus

9 Aug 2016 4066 Readers comments 6 Min Read

A Commander in the future has to train a new Android. Little does he know that the Android has emotions, and has already fallen for him.

Topics: Anal Sex, Big Dick, Sci-Fi, Robot

7.7
58 Votes

My roommate is a gay neanderthal

Story by Kevin's Path

19 Apr 2016 6279 Readers comments 37 Min Read

I discovered they were the crowning apex of gay evolution. My roommate Garin was going to rock the world of anthropology when I exhibited him at the conference!

Topics: Drugs, Roommate, Sci-Fi

8.6
8 Votes

Viral Enhancement (ch. 25)

Story by ESE

2 Mar 2016 1312 Readers comments 12 Min Read

Diego looks for new solutions. Alex deals with his new situation. Daniel copes with symptoms of EV21.

Topics: Big Dick, Cop, Sci-Fi, Oral & Blowjobs

8.5
42 Votes

Doom Guy vs Hell

Story by Doom Guy

2 Feb 2016 5072 Readers comments 8 Min Read

The protagonist from the popular PC game finds a level he wasn't expecting it the midst of brutally murdering the armies of hell. Tentacles. Satan.

Topics: Anal Sex, Big Dick, Sci-Fi, Oral & Blowjobs, Throat Fucking

8.3
28 Votes

Who are you?

Story by Tommy

11 Jan 2016 2011 Readers comments 20 Min Read

Three boys in a mysterious room together and they've all lost their identities. What could possibly happen?

Topics: Sci-Fi

8.9
47 Votes

Borg XXX

Story by Gabriel

8 Nov 2015 4123 Readers comments 16 Min Read

Two formerly assimilated friends from the Starship Enterprise suddenly find themselves un-assimilated from the Borg collective, on a damaged Borg cubed, and decide to take advantage of it

Topics: Anal Sex, Sci-Fi

8.9
70 Votes

Bored and boarded - from the terracorp chronicles

Story by Chad

28 Sep 2015 3160 Readers comments 36 Min Read

A young member of the TerraCorp Security Corps blows off a little steam, and a big cock, before shipping out, getting boarded, in multiple ways, and discovering some very interesting, and hard, cargo.

Topics: Anal Sex, Big Dick, Slut, Sci-Fi