Gay Sci-Fi Stories

GayDemon's Stories: On this page you can find erotic fiction where you can read about futuristic gay sex and sci-fi.

The Milky Way

By AstroGuy42 27 Sep 2025

I'd heard the rumors: places to get body mods. If true, they would be WAY too expensive for me. Then my best friend and roommate came home: They were true. But what price would I pay to get the body of my dreams?

8.3 (22) 3617 8 Min Comments

Beyond the Stars

By Jaradon 21 Sep 2025

Two men encounter a cosmic force in deep space which affects their sexual desires

7.1 (13) 711 8 Min Comments

End of an Empire

By Grant 14 Sep 2025

Oliver was backpacking with two of his friends when they realized things had gone from bad to worst.

9.5 (52) 2068 51 Min Comments

Star Date (ch. 3)

By Jaybradman 9 Sep 2025

Research begins as the commander and Dati make their way through space.

9.4 (12) 281 10 Min Comments

Star Date (ch. 2)

By Jaybradman 6 Sep 2025

Commander Gib plots a course to his new shipmates home planet.

8.6 (8) 247 2 Min Comments

Life Under the Order

By Bill Drake 3 Sep 2025

Under the new Order, a conscript learn his place in the military hierarchy.

8.5 (42) 1902 10 Min Comments

Amongst Us (ch. 2)

By Grant 25 Aug 2025

We pick up Noah's story eighteen months later.

9.3 (35) 1232 52 Min Comments

Endless (ch. 20)

By Sam Stefanik 21 Aug 2025

Epilogue - Here we are after the end. There's no more story to tell, but there are some thank yous to say and some behind the scenes to expose. I hope you'll enjoy the epilogue. Thanks for reading.

9.8 (7) 234 6 Min Comments

Amongst Us

By Grant 20 Aug 2025

He came to study the people, to see if they were ready. To do so, he needed to integrate himself within one of their cultures. Little did he realize how much he would do so.

9.8 (42) 2007 75 Min Comments

Endless (ch. 19)

By Sam Stefanik 20 Aug 2025

LAST CHAPTER! Tune in tomorrow for the epilogue. I will discuss the characters and the story development as well as what i learned along the way. I hope you enjoyed the story. I hope you'll like the ending as well.

9.8 (7) 260 17 Min Comments

Endless (ch. 18)

By Sam Stefanik 19 Aug 2025

Did you see that coming? Jim says he didn't. I hope you didn't. We're reaching the end now. Just two more story chapters and an epilogue. Thanks for reading!!

9.7 (7) 146 19 Min Comments

Endless (ch. 17)

By Sam Stefanik 18 Aug 2025

Jack says someone must go inside and kill the sentience. That someone must be Marvin. I'm sure you have questions. The answers are in the chapter. Enjoy!

9.7 (7) 101 13 Min Comments

Endless (ch. 16)

By Sam Stefanik 17 Aug 2025

There's not much to say about this chapter that wouldn't be a spoiler. We're approaching the end now. There are 19 chapters total and this is 16. In this one, the pair reach the destination within the tunnels. Marvin is about to show Lac the memory from the day he died. If you're still reading, you have my thanks.

9.8 (6) 146 15 Min Comments

Tropical Incursions Into Fifi

By Edwin Exeter 17 Aug 2025

Watch Fifi perform in a live-streamed sex show!

9.3 (3) 676 11 Min Comments

Endless (ch. 15)

By Sam Stefanik 16 Aug 2025

If a man does bad things, does that make him a bad person? What if he does the bad things to help others? Are you a moral absolutist, or a moral relativist? Lac and Marvin are in Washington to answer those questions and more. Let's see how they do.

9.7 (7) 145 25 Min Comments

Morning Sickness

By Boy Mercury X 16 Aug 2025

Cody is breeding stock in a world without women—an athletic youn semen catcher, his purpose reduced to clinical rutting with brooding scientist Brian. But in this brutal future, seeding the next generation takes more than science: only raw, messy sex can spark new life, and only the strongest boys get knocked up.

9.6 (51) 4915 20 Min Comments

Endless (ch. 14)

By Sam Stefanik 15 Aug 2025

I hope you enjoyed the interlude. Lac and Marvin certainly did. This time, the pair goes on a short trip. They travel through space instead of time. Where will they go and who will they meet along the way? You'll have to read to find out. ENJOY!

9.7 (7) 430 16 Min Comments

Endless (ch. 13)

By Sam Stefanik 14 Aug 2025

Marvin talked about Tom like some talk about Christ. In many ways, Tom was a Christ like figure for Marvin. Definitely a savior. Marvin still puts Tom's ashtray on the table every night even though he's been dead for centuries. Marvin stopped the story because it's gotten too difficult to tell. Seems like its time for an intermission. Enjoy!

9.5 (6) 491 18 Min Comments

The Order (ch. 29)

By Brad A Townsend 14 Aug 2025

The Order is a long story (30 Chapters) with a continuation entitled The Gifts (20 Chapters). It's an Epic Adult Gay Contemporary Fantasy about ten men, five couples, who become one soul. Former military, they find themselves caught up in an epic battle of good vs evil, and must discover unconditional love for themselves and each other to survive.

8.8 (1) 104 207 Min Comments

Endless (ch. 12)

By Sam Stefanik 13 Aug 2025

There certainly were a lot of ghosts in Tom's old house. Jim, the only commenter so far on this story, observed that Tom must be made of 'sterner stuff.' I suppose he is. He managed to come through that brutal upbringing to be a functional adult, albeit with some obvious scars. Marvin loves him though. That counts for something.

9.8 (6) 179 17 Min Comments

The Order (ch. 28)

By Brad A Townsend 13 Aug 2025

The Order is a long story (30 Chapters) with a continuation entitled The Gifts (20 Chapters). It's an Epic Adult Gay Contemporary Fantasy about ten men, five couples, who become one soul. Former military, they find themselves caught up in an epic battle of good vs evil, and must discover unconditional love for themselves and each other to survive.

8.9 (1) 96 210 Min Comments

Endless (ch. 11)

By Sam Stefanik 12 Aug 2025

Who is Saint Lawrence and why did he need a seaway? What does that have to do with Tom and Marvin? Very little. It seems like the pair are about to tour Tom's childhood home. I wonder what secrets await them. You'll have to read to find out. ENJOY!

9.8 (6) 180 20 Min Comments

The Order (ch. 27)

By Brad A Townsend 12 Aug 2025

The Order is a long story (30 Chapters) with a continuation entitled The Gifts (20 Chapters). It's an Epic Adult Gay Contemporary Fantasy about ten men, five couples, who become one soul. Former military, they find themselves caught up in an epic battle of good vs evil, and must discover unconditional love for themselves and each other to survive.

8.8 (1) 99 219 Min Comments

A Jurassic Affair

By Jaradon 11 Aug 2025

Two men bond over the passion for dinosaurs

7.4 (9) 827 5 Min Comments

Endless (ch. 10)

By Sam Stefanik 11 Aug 2025

Where did you grow up? Can you still go back there and recognize it? Would you even want to? In this chapter, Tom and Marvin look at the city where Tom spent his youth. WHat do you think they'll find? Have a look and see! Enjoy!

9.5 (8) 150 18 Min Comments

The Order (ch. 26)

By Brad A Townsend 11 Aug 2025

The Order is a long story (30 Chapters) with a continuation entitled The Gifts (20 Chapters). It's an Epic Adult Gay Contemporary Fantasy about ten men, five couples, who become one soul. Former military, they find themselves caught up in an epic battle of good vs evil, and must discover unconditional love for themselves and each other to survive.

8.8 (1) 85 185 Min Comments

Endless (ch. 9)

By Sam Stefanik 10 Aug 2025

Tom is going to die. In the meantime, he and Marvin are supposed to save the world. Life can be pretty complicated sometimes. For some reason, the pair has to go to Detroit. That's the city Tom is from. I wonder who they'll meet when they get there. You'll have to read to find out! Enjoy!

9.8 (6) 192 22 Min Comments

The Order (ch. 25)

By Brad A Townsend 10 Aug 2025

The Order is a long story (30 Chapters) with a continuation entitled The Gifts (20 Chapters). It's an Epic Adult Gay Contemporary Fantasy about ten men, five couples, who become one soul. Former military, they find themselves caught up in an epic battle of good vs evil, and must discover unconditional love for themselves and each other to survive.

9.4 (2) 107 166 Min Comments

Cave of Painful Pleasure (ch. 2)

By Staffido 9 Aug 2025

Monsters use their muscular victims and carry them to their lair

9.1 (34) 3723 7 Min Comments

Endless (ch. 8)

By Sam Stefanik 9 Aug 2025

At the end of the last chapter, Marvin thinks, 'no problem.' I suspect there will be a problem. What could it be? You'll have to read to find out. Enjoy!

9.3 (5) 248 13 Min Comments

The Order (ch. 24)

By Brad A Townsend 9 Aug 2025

The Order is a long story (30 Chapters) with a continuation entitled The Gifts (20 Chapters). It's an Epic Adult Gay Contemporary Fantasy about ten men, five couples, who become one soul. Former military, they find themselves caught up in an epic battle of good vs evil, and must discover unconditional love for themselves and each other to survive.

9.4 (2) 83 190 Min Comments

Endless (ch. 7)

By Sam Stefanik 8 Aug 2025

Well, we've seen The System and the digital version of Marvin. Poor Lacas seems overwhelmed by the whole situation. I get it. Marvin's situation is a lot to take in. It seems the couple is going to dream of the past together. Should be interesting. Let's see!

9.0 (7) 267 14 Min Comments

The Order (ch. 23)

By Brad A Townsend 8 Aug 2025

The Order is a long story (30 Chapters) with a continuation entitled The Gifts (20 Chapters). It's an Epic Adult Gay Contemporary Fantasy about ten men, five couples, who become one soul. Former military, they find themselves caught up in an epic battle of good vs evil, and must discover unconditional love for themselves and each other to survive.

8.9 (1) 93 200 Min Comments

Thru the Veil: The Collective

By Steel Dragon 8 Aug 2025

Nobody really knows who or what 'The Collective' is. Hunters of the Night roaming the abandoned industrial districts in search for innocent wanderers to 'harvest' their lust. I didn't believe those urban legends. Until last Friday.

9.2 (21) 1787 13 Min Comments

Endless (ch. 6)

By Sam Stefanik 7 Aug 2025

In this chapter, Marvin shows Lac The System. What do you think it will be like? HHHmmmmmm...interesting. Maybe you're right. You'll have to read to find out. Enjoy!

9.8 (6) 341 9 Min Comments