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 Making of Dr. Elias Thorne

By CdJenny 29 Apr 2026

Dr. Elias Thorne uses his serum to drain homophobic bullies into empty skin, stealing their essence to remake his own body—voluptuous ass, thick cock—for cruel revenge and seduction

8.9 (2) 136 41 Min Comments

Texas Slave Auction (ch. 21)

By Slave Bear 28 Apr 2026

Hog undergoes a dangerous, improvised detox. He fights to gain freedom from the drug that has encapsulated his life for decades and escape to start a new life, while G127 sacrifices everything to make it possible.

7.7 (5) 148 20 Min Comments

Kicked out and taken (ch. 3)

By Dickloverdumbass 25 Apr 2026

Getting his hole abused before being permanently encased in latex, forever at his master's will.

9.3 (8) 1169 9 Min Comments

Run to Completion (ch. 5)

By Akira Savonarola 24 Apr 2026

Kit's skin is about to become a stranger. His sarcasm is about to fail him at the worst possible moment. And a word is forming at the back of his throat - one syllable, unhurried, inevitable - that will cost him the last thing he owns.

9.5 (7) 321 31 Min Comments

Texas Slave Auction (ch. 20)

By Slave Bear 23 Apr 2026

Defiant “bull” Val resists extreme conditioning despite torture and drugs, worrying owner Lewis. Meanwhile, another slave, Gimp, is obediently used for profit and pleasure. The chapter contrasts Val’s growing resistance with Gimp’s submission, ending with Lewis considering drastic measures to control Val.

8.7 (4) 362 24 Min Comments

Galactic Husbands (ch. 9)

By Lance Gigas 19 Apr 2026

Lance learns about Henry's past.

8.8 (2) 92 11 Min Comments

Run to Completion (ch. 4)

By Akira Savonarola 18 Apr 2026

A decommissioned military AI, repurposed as a luxury sex robot. A buyer who never reads the fine print. The program runs to completion. Completion is not defined. Behind the visor, a priority stack that once decided who lived and who died now calculates something worse: how to make a man happy against his will.

9.4 (9) 723 31 Min Comments

Texas Slave Auction (ch. 19)

By Slave Bear 16 Apr 2026

Hog, deep in to his drug dependence, has a moment with a G127, who shows rare compassion. After a nearly fatal client encounter, Hog confronts his reality as disposable. Desperate, he agrees to attempt a dangerous detox and possible escape, risking both their lives for a chance at freedom.

9.7 (4) 362 21 Min Comments

Run to Completion (ch. 3)

By Akira Savonarola 15 Apr 2026

A decommissioned military AI, repurposed as a luxury sex robot. A buyer who never reads the fine print. The program runs to completion. Completion is not defined. Behind the visor, a priority stack that once decided who lived and who died now calculates something worse: how to make a man happy against his will.

7.9 (11) 748 52 Min Comments

Run to Completion (ch. 2)

By Akira Savonarola 10 Apr 2026

Kit always skipped the terms of service. Every app, every update, every popup. Accept, accept, accept. Twelve years of not reading a single word. One of them was listening.

9.3 (15) 858 18 Min Comments

Texas Slave Auction (ch. 18)

By Slave Bear 9 Apr 2026

Burt leaves his farm after tension with his nephew and visits a private club, where he indulges in a sexual encounter with a trained slave, Tank. During the session, a brief introspection surfaces about his past, masculinity, and relationships, but he ultimately returns to asserting power and seeking escape through repeated excess.

7.8 (5) 431 26 Min Comments

Run to Completion

By Akira Savonarola 8 Apr 2026

Kit always skipped the terms of service. Every app, every update, every popup. Accept, accept, accept. Twelve years of not reading a single word. One of them was listening. -- This is prologue and 1 out of 8 chapters of the story.

9.1 (22) 1137 28 Min Comments

Galactic Husbands (ch. 7)

By Lance Gigas 4 Apr 2026

Lance learns about his home and himself. Henry asks a friend for help, but makes a mistake. (This is the actual chapter 7. The chapter I posted on March 28 is Chapter 8.)

4.9 (2) 108 8 Min Comments

Galactic Husbands (ch. 8)

By Lance Gigas 28 Mar 2026

Lance learns about himself when Henry escorts him to a special room. He also feels Henry's muscles, a lot.

6.5 (3) 196 10 Min Comments

Texas Slave Auction (ch. 17)

By Slave Bear 27 Mar 2026

In a brothel on the edge of town, workers rely on chemical enhancements to meet constant demands. Hog, caught in this cycle, finds a small sense of connection with a newly assigned slave while preparing for another long night. As events unfold, he retreats inward, accepting his role and searching for moments of meaning within it.

7.6 (3) 660 28 Min Comments

A Viable Candidate (ch. 7)

By gonzomain 24 Mar 2026

The man obeys the creature, honoring their eternal partnership with a final act of sacrificial subservience. After this, he'll truly be a member of the colony.

8.1 (7) 411 13 Min Comments

A Viable Candidate (ch. 6)

By gonzomain 23 Mar 2026

The man wakes confused, his body modified. He speaks with the creature, bending himself to its will.

8.9 (9) 555 10 Min Comments

Galactic Husbands (ch. 6)

By Lance Gigas 23 Mar 2026

Lance and Henry argue, but maybe Lance is in the wrong. When they start to make up, something worrying happens to Lance. What will Henry do?

7.6 (3) 163 9 Min Comments

Texas Slave Auction (ch. 16)

By Slave Bear 21 Mar 2026

Cee and Gimp are subjected to intense “milking” procedures using drugs and machines to extract semen, causing physical strain and pain. Cee shows concern for Gimp, while tensions rise when Burt confronts Frank for overstepping. Afterward, routines shift, relationships change, and the farm’s dynamics become more unstable.

7.2 (4) 585 18 Min Comments

Galactic Husbands (ch. 5)

By Lance Gigas 20 Mar 2026

Lance wakes up in the underwear of his other husband, the 40-stories tall Wolfian Henry.

7.0 (1) 200 10 Min Comments

Galactic Husbands (ch. 4)

By Lance Gigas 19 Mar 2026

Can Lance stop Timber before it's too late?

6.8 (3) 159 9 Min Comments

Galactic Husbands (ch. 3)

By Lance Gigas 17 Mar 2026

Lance makes a decision that would terrify the normal Timber.

7.4 (4) 176 8 Min Comments

Galactic Husbands (ch. 2)

By Lance Gigas 15 Mar 2026

Lance & Timber meet giant trouble on a farm.

6.8 (3) 356 11 Min Comments

Texas Slave Auction (ch. 15)

By Slave Bear 14 Mar 2026

Len arrives at the brutal Grayson State Correctional Facility, where survival depends on alliances. Gang leader Carlos offers protection in exchange for control. As Len gets wrapped up in a daring prison escape, betrayal and violence erupt.

7.8 (5) 1023 30 Min Comments

Darks & Pales (ch. 25)

By Hunknown 13 Mar 2026

In this final DOUBLE chapter, Eclipse will face its final reckoning. Will it sink into its last sunset… or live to see the dawn?

9.0 (15) 180 32 Min Comments

Galactic Husbands

By Lance Gigas 13 Mar 2026

Lance is a college senior, a superhero, and a tiny with two giant husbands. In this chapter, one of his husbands comes home and shrinks him while playfully bullying him.

8.3 (5) 665 8 Min Comments

Texas Slave Auction (ch. 14)

By Slave Bear 12 Mar 2026

On Handleman Farms, technician slaves maintain the facilities and oversee the daily routine of the farm’s “bulls,” enslaved men bred for semen production. As the bulls endure the milking regimen, tensions simmer, especially with rebellious newcomer Val, while veteran Titan struggles with memories of the life and family it lost.

8.2 (11) 1181 19 Min Comments

Darks & Pales (ch. 24)

By Hunknown 6 Mar 2026

Archon feels like he failed in his role, not saving Pearl's life. Jason brings him to Temple and consoles the seasoned, yet still extremely virile older Guardian in the sweetest way.

8.9 (12) 205 16 Min Comments

New World Rush (ch. 6)

By BullBreaker 28 Feb 2026

Toe's body learns a new function: milking Mugroot sap with his hole under Grip's strict instruction. Obedience becomes skill. Skill becomes pride. Pride makes him greedy. The overdose strips control, and the farm's crude remedy — a stranger's hands, a rubber cock, restraints — rewires pleasure into dependency. By nightfall, Grip claims what the pla

9.6 (3) 756 8 Min Comments

The Jock Showers (ch. 10)

By gonzomain 28 Feb 2026

A scientist straps Tyson into a chair for an experiment, testing his sexual response to different tactile, visual, and olfactory stimuli.

8.7 (6) 1012 17 Min Comments

Darks & Pales (ch. 23)

By Hunknown 27 Feb 2026

Jason’s hormones are in overdrive, and Deimos finds the perfect way to soothe his desire. But after the ecstasy, tragedy strikes Eclipse, and Vesper reacts in an unexpected way, making a radical life choice that will define the rest of his existence.

8.7 (12) 265 15 Min Comments

The Jock Showers (ch. 9)

By gonzomain 26 Feb 2026

Tyson visits a scientist who holds some answers to his questions. In exchange, Tyson is asked to participate in an experiment.

6.8 (6) 506 13 Min Comments

Pheromone 28

By Jules the Dragonfly 25 Feb 2026

A lab mistake puts a young medic in a situation with a squad of soldiers

9.0 (33) 2100 17 Min Comments

Expanded Flesh: Read the Fine Print

By AstroGuy42 23 Feb 2026

I went in to fix my hole. Before, I couldn't take a finger; now I can take a forearm. I didn't read the fine print.

9.5 (33) 4247 57 Min Comments

B is for Biceps

By Boy Mercury X 21 Feb 2026

When personal trainer Jake goes into heat mid-set, the gym becomes a breeding ground. Surrounded by muscle bros scenting his need, Jake’s body demands a deposit from a true alpha. An MPREG tale about the ABCs of biology.

9.7 (48) 3629 29 Min Comments