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.

The Robo-Lips Sex Machine

By Del Crane 10 Nov 2024

Best New Product-2030, the Robo-Lips Sex Machine for a Horny Cock.

7.3 (6) 510 4 Min Comments

Professor Phallus' 2040 Gay Sex tube lecture

By Del Crane 27 Oct 2024

Let's take  a closer at the Male Sex machine

8.0 (6) 707 4 Min Comments

Billy And The Sex Clones (ch. 2)

By Del Crane 26 Oct 2024

About once a week one of the Clones would wander in at night, after a piss break, and in the dark, fuck any mouth that presented  itself. Joe and Jim, one after another would get both their mouths fucked by a thick rock-hard Clone cock-and get a load of narcotic Cum

7.5 (12) 668 6 Min Comments

The Night Feeders

By rubber collector 26 Oct 2024

Alien creatures called the sucklvors land on planet earth in order to fulfill their mission they took on the form of young boys. So they can make friends with the young boys in the town. But they had a secret agenda.

5.6 (13) 937 4 Min Comments

The Harvesters

By rubber collector 25 Oct 2024

A mysterious stranger wearing black rubbery outfit convinces the mayor to create a group of young men into the Aquanauts but the mysterious stranger has an evil purpose set in place as he is not human

4.1 (6) 584 3 Min Comments

Guass and Grendel

By Demon Monster 6 Oct 2024

A warframe gay sex story between Guass and Grendel

9.5 (6) 402 26 Min Comments

Black Tiger - Hypnotrapped

By Ebonart 22 Sep 2024

Superhero Black Tiger falls under the hypnotic sway of a gang lord with greater ambitions than just our hero's hunky body.

9.6 (16) 2600 17 Min Comments

Gantu's Beach Day

By Demon Monster 9 Sep 2024

Gantu goes to the beach and has a fun time

8.8 (6) 1744 17 Min Comments

The Encounter (ch. 3)

By Jaradon 5 Sep 2024

Two men bond over an alien encounter

8.9 (10) 1061 6 Min Comments

The Mona Lisa Mystery

By Del Crane 26 Aug 2024

Aliens had come to Earth in the year 2100, having found one of our wandering space probes. These were local aliens in our  quiet,obscure corner of the Milky Way-not any of the dominant ruling alien races.

8.8 (3) 404 11 Min Comments

Dossier of Mpreg Cases

By Ganteng 18 Aug 2024

This is an opening summary of when the world was suddenly hit by a strange phenomenon where new male subspecies emerge, the Alpha (the man of the men) and Beta (the man who can get pregnant).

9.3 (64) 5574 33 Min Comments

Keeping Secrets (ch. 5)

By Grant 26 Jul 2024

Another Chapter, another conflict requiring the team to respond.

9.9 (21) 1053 113 Min Comments

Clonehood (ch. 2)

By Sukumar 22 Jul 2024

Leo is an employee of ABC company, finds himself in between police, mafia and a large level corruption, in a furiastic fucking clone society.

8.5 (7) 347 7 Min Comments

The Human Bearer (ch. 13)

By Daemon D. Hart 13 Jul 2024

Riordan learns about alien birth from Kyle and later crashes on a Xeno meeting of the highest rank.

9.7 (12) 1511 13 Min Comments

Imardull And His New Mortal

By Demon Monster 3 Jul 2024

Hello I just wanted to go ahead and start a small little thing going with this so hope you enjoy

8.8 (3) 1514 22 Min Comments

Krogans Traditional Arena

By Demon Monster 3 Jul 2024

In the heart of the bustling marketplace on the volatile planet of Tuchanka, the air grew thick with anticipation as the crowd parted to reveal a makeshift arena. Two towering krogans, their skin gleaming with a sheen of oil, stepped into the ring. The larger of the two, a seasoned warrior named Grahk, flexed his muscles.

9.1 (8) 589 14 Min Comments

2131 CE

By Grant 17 Jun 2024

The last rocket is about to leave Earth, the last for any hope of evacuation from the dying planet. (updated version)

9.3 (61) 2679 88 Min Comments

Male World Order

By Danny 5 Jun 2024

In a highly authoritarian, male dominated future America, 19 fresh high school graduates undergo a battery of mental and physical tests to learn their place in the male hierarchy and secure their futures

9.0 (16) 3283 28 Min Comments

The teddy bear which granted me my wishes (ch. 6)

By mr_crimson 2 Jun 2024

As the main character got an interesting reward he explores it and learns a lot more about the whole world.

9.6 (4) 687 6 Min Comments

Expected Result (ch. 6)

By Swallow Your Lightsaber 29 May 2024

Surprises are pleasant, especially these kinds, Stan and Jeremy finally get some reinforcements. The LT makes it back, and a US Naval Vessel can make supply drops and deliver a passenger. Jeremy discovers a couple of anomalies in their medical exams.

7.7 (4) 370 17 Min Comments

The Purple Rubber Outfits

By rubber collector 21 May 2024

A new sex club opened up at the next town over and the human males were floxing to get to the club but once you enter the club you are not the same ever again

8.2 (16) 1284 7 Min Comments

New World Order

By rasun 19 May 2024

The Rise of the Nub Virus - In the world of "Black Order," a once peaceful existence was shattered by the arrival of a mysterious meteorite carrying a devastating payload - the Nub Virus.

7.3 (16) 1418 2 Min Comments

The Skreel

By rubber collector 19 May 2024

Rubberlaxin creature shares symbotic relationships with another alien lifeform known as a SKREEL Rubberlaxin comes to planet earth to find human female breeding host for the SKREEL FEMALE

4.2 (3) 232 1 Min Comments

The Alien Enity

By rubber collector 17 May 2024

Alien finds human host to harvest the earthlings males

4.9 (12) 994 4 Min Comments

The purple rubber outfit

By rubber collector 16 May 2024

A boy finds a purple rubber outfit and falls under the control of the alien entity so the alien can feed.

8.1 (9) 684 6 Min Comments

The Only Miracle

By taitanium1988 4 May 2024

A weird pandemic swiped the world...Jimmy opened the door to a young man and didn't realize his fate will flush to a sea change.

4.4 (6) 2995 30 Min Comments

The Rut (ch. 5)

By Boy Mercury X 27 Apr 2024

In the conclusion to The Rut, all storylines collide, the mystery of Sunday Stu is revealed, the pregnant jock bros each get what they most desire, and so does everyone else.

9.7 (22) 2661 29 Min Comments

01040113

By Romo 16 Apr 2024

As he walks to the Collection chamber, he looks at the others, like him, in this immense room. Shaved. Naked. Muscular. His body, like theirs, is at its peak of specimen perfection. The machines have seen to this perfection. As each in this room share his approximate age. He is in his twentieth year of existence. And he does what he is told to do.

8.8 (46) 2450 5 Min Comments

The New Terrans (ch. 18)

By PCLatex 9 Apr 2024

With the rebellion over, the mutant-droids are at last able to live the life so long denied them. Felix and Jorge celebrate with their first lovemaking in their natural form ...

9.8 (8) 503 10 Min Comments

Pleasurable Pain

By Boldie 5 Apr 2024

Aman, Moh and Dan are three young man, who volunteered for a experiment in which they get paid highly. At first, the staff prepare them seperately in different room, where Aman get injected with a blue serum, Moh and Dan injected with red serum. After that, they enters in room and locked for 48 hrs. Soon, as minutes passes, they start feeling lust, horny and arousal feelings towards each other.

8.8 (22) 5013 21 Min Comments