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.

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.

7.5 (2) 264 10 Min Comments

Galactic Husbands (ch. 4)

By Lance Gigas 19 Mar 2026

Can Lance stop Timber before it's too late?

8.1 (5) 205 9 Min Comments

Galactic Husbands (ch. 3)

By Lance Gigas 17 Mar 2026

Lance makes a decision that would terrify the normal Timber.

7.9 (5) 223 8 Min Comments

Galactic Husbands (ch. 2)

By Lance Gigas 15 Mar 2026

Lance & Timber meet giant trouble on a farm.

8.1 (5) 449 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 (6) 1298 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) 204 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.

8.6 (6) 899 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.

8.5 (13) 1502 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) 213 16 Min Comments

New World Rush (ch. 6)

By Bull Breaker 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

9.7 (4) 882 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) 1259 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) 281 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) 600 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 (35) 2417 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 (34) 5298 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 (52) 4384 29 Min Comments

Darks & Pales (ch. 22)

By Hunknown 20 Feb 2026

Jason is tense as he faces a decision about Vesper’s fate, but when they talk, their conversation turns out to be unexpectedly illuminating. Later, the Shepherd Rylan receives an unprecedented request from Vesper, and grants it… only to give him something else as well: what he truly needs.

8.8 (12) 178 13 Min Comments

Sex Agent Saves the World

By Zachary Zane 16 Feb 2026

"CAM intends to turn the world into one big, nonstop, pansexual orgy and will kill every human being who refuses to join.”

5.4 (3) 362 14 Min Comments

Darks & Pales (ch. 21)

By Hunknown 13 Feb 2026

Deimos asks Stellan, the apprentice Shepherd, to give him lessons in man-love, and proves to be a quick learner. Laudon, in the effort to save Jason, performs an unprecedented medical routine. Deimos, at long last, is revealed the true nature of Laudon and Boba-Maiii.

8.8 (13) 190 18 Min Comments

James the Space Diplomat (ch. 2)

By Oliver V. Cub 12 Feb 2026

While his ship resupplies, Diplomat James is on a domestic mission of his own. This sequel follows our chunky space envoy to a nearby planet and back. When a hot alien daddy seeks refuge on his ship, will our plucky hero give him a free ride or turn him out in space?

9.4 (19) 364 13 Min Comments

New World Rush (ch. 5)

By Bull Breaker 12 Feb 2026

Scorching Dustlands farm. Wiry thrall labors under hulking gaze. Heat gnaws sweat-slick skin. Chain clinks cold. Cage grinds groin raw. Muscles quiver exposed, dust cakes every flex. Presence looms dense, crushes air. Pressure coils in shallow breaths. Isolation throbs. Obedience aches inevitable. Fate grips tighter, pulse by unseen pulse.

9.8 (6) 512 4 Min Comments

Darks & Pales (ch. 20)

By Hunknown 6 Feb 2026

Vesper’s confession sparks a desperate race to save Jason. As Deimos faces fear and uncertainty at the Temple, tension builds beyond endurance. It is Stellan, the clever apprentice Shepherd, who draws on ancient techniques to ease that strain, offering relief when Deimos can bear no more...

9.0 (15) 200 20 Min Comments

A Viable Candidate (ch. 5)

By gonzomain 4 Feb 2026

The man reenters the creature's ether, prepared for another conversation. Instead, he finds himself in a mysterious sex ritual within his own dreamscape.

9.2 (16) 1500 13 Min Comments

Musktopia (ch. 5)

By Tate Laws 31 Jan 2026

Decades of lust forge an empire: marriages seal unbreakable bonds, a thriving supplement business hides erotic secrets, and superhuman sons are born from cum-fueled pregnancies, perpetuating a dynasty of muscle, breeding, and forbidden family rituals.

9.1 (14) 1806 6 Min Comments

Darks & Pales (ch. 19)

By Hunknown 30 Jan 2026

Jason cannot let Deimos believe he is some kind of demigod tied to Boba-Maiii, and wants to reveal the truth. Knowing how hard it will be for Deimos to grasp in minutes what took him months to understand, he softens it in the sweetest way. But behind the scenes, Vesper is plotting a deadly trap for Jason...

9.1 (11) 190 21 Min Comments

Musktopia (ch. 3)

By Tate Laws 30 Jan 2026

Tyler’s secret biotech trial explodes into view, transforming cum into a miraculous elixir—drunk, bathed in, shampooed with, and cooked into meals—as the trio indulges in filthy, addictive rituals that supercharge their bodies and desires.

8.4 (12) 1037 7 Min Comments

New World Rush (ch. 4)

By Bull Breaker 29 Jan 2026

Sweat-slick cages throb, leaking shame down chained thighs. Rough palms brand flesh, boots grind holes open. Power surges thick—your twitch betrays, vulnerability exposed. No flight, no mercy. Musk traps breath. Farm chains tighten forever.

9.7 (4) 1154 6 Min Comments

Chem Yield (ch. 2)

By Bull Breaker 27 Jan 2026

Air thickens, chest compressing, breath snagging shallow. Heat pools low, slick and insistent, posture locking open before thought resists. Skin prickles under unseen gaze, shame bleeding into throb, craving coiling tight. Density closes, warm and final, body surrendered.

8.8 (15) 935 19 Min Comments

Chosen

By MaXXX_no 25 Jan 2026

The story about "The Chosen". Each with a feature, and each form different origin.

7.5 (22) 1359 4 Min Comments

The Jock Showers (ch. 6)

By gonzomain 25 Jan 2026

Tyson investigates his mysterious employer in preparation for his next shift. He's surprised by what he discovers.

8.4 (6) 801 9 Min Comments

The Jock Showers (ch. 5)

By gonzomain 24 Jan 2026

Tyson learns more about his new coworker as they service gym jocks together.

8.5 (12) 1880 16 Min Comments

Darks & Pales (ch. 18)

By Hunknown 23 Jan 2026

Jason's display of 'religious' power makes proud Rufus accept the rightful punishment for having abused young Jael, but the punishment unexpectedly makes Rufus discover what being loved and respected means. And yet, the rough janitor Aric is determined to make Rufus pay for his guilt...

9.2 (11) 303 20 Min Comments

Until the End

By Alex Ryder 23 Jan 2026

Miles and Ryder were an unlikely couple. Miles was a quiet, skinny, nerdy red head, and Ryder was a toned, rough, tattooed bad boy. They looked like the most mismatched couple ever. But, they were in love, really in love. Miles planned the perfect first anniversary celebration. What Miles didn't count on was the start of World War III.

9.1 (12) 328 16 Min Comments

The Experiment (ch. 3)

By GodE 19 Jan 2026

Phase Three: The Mind's Surrender

6.0 (14) 5394 2 Min Comments

The Experiment (ch. 2)

By GodE 18 Jan 2026

Phase 2: The Reversal

7.7 (14) 3401 3 Min Comments