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.
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.
Pheromone 28
By Jules the Dragonfly 25 Feb 2026
A lab mistake puts a young medic in a situation with a squad of soldiers
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.
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.”
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?
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.
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.
The Experiment (ch. 3)
By GodE 19 Jan 2026
Phase Three: The Mind's Surrender
Kicked out and taken (ch. 2)
By Dickloverdumbass 5 Jan 2026
Our main boy gets his cock locked away, and the process of becoming a slave starts here.
The Prisoner
By BlackPanthor069 2 Jan 2026
Simon wakes up naked and disoriented in a sterile, surveilled environment, subjected to electric shocks and forced to comply with commands from an unseen authority. A panel of spectators observes his humiliation with detached amusement or clinical interest, reinforcing his status as an unwilling test subject
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New World Rush (ch. 2)
By BullBreaker 24 Dec 2025
Sweat-soaked mohawks pierce the haze, nipple rings glint like chains binding your will. Rake's heavy cock swings low, demanding your mouth—salty, throbbing, inescapable. Collar snaps cold on your neck, lockcage crushes your ache, Rush burns obedience into veins. Vulnerability throbs raw, power owns every gasp. No turning back—step into his stride.
Serum 3379 (ch. 7)
By ShawnTVWrites 17 Dec 2025
Julian and Monty discover the sex of their baby and then...go on a picnic and a picnic only. Nothing else happens ;)
The Prince
By Damon Rozen 28 Nov 2025
In Avalon’s Grand Palace, Prince Johnnie and activist Harry prepare for a wedding that symbolizes love, equality, and progress. Amid dazzling holograms and futuristic traditions, tragedy strikes when Queen Sharon suffers a fatal heart attack. Grief reshapes celebration into mourning, yet Harry’s unexpected pregnancy offers hope—promising renewal, c
Cursed (ch. 11)
By Jesse Christian 24 Nov 2025
Jackson discovers a whole new side of the curse that threatens to change his life forever.
A Boy's Anal Cybertronic Affair (ch. 5)
By Mr.X 6 Nov 2025
Well, the Twinks are in the Slings in the Lab, Ready for Xavier and Daddy Fisting. An incredible genetic and sexual ability is discovered in Hot Femboy Bobby! After it is revealed, the next step is to take Xavier home with them to the Six-Floor- Boy- Bonding Dungeon (SFBBD)
The Milky Way (ch. 3)
By astrolub 2 Oct 2025
After all the cum Jay drank, what happened to him?
Beyond the Stars
By Jaradon 21 Sep 2025
Two men encounter a cosmic force in deep space which affects their sexual desires
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.
Star Date (ch. 3)
By Jaybradman 9 Sep 2025
Research begins as the commander and Dati make their way through space.
Life Under the Order
By Bill Drake 3 Sep 2025
Under the new Order, a conscript learn his place in the military hierarchy.
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Amongst Us (ch. 2)
By Grant 25 Aug 2025
We pick up Noah's story eighteen months later.
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.
Tropical Incursions Into Fifi
By Edwin Exeter 17 Aug 2025
Watch Fifi perform in a live-streamed sex show!
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.
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.
Loose Yourself to Become Yourself
By Steel Dragon 5 Aug 2025
A short story I wrote a few days ago, Reflections of a rubber drone - one of the many hunters of the night roaming The Cities abandoned industrial districts. (for anyone not interested - there's women described in passing, but staying in the background)
Digital Slave
By Raphael 2 Aug 2025
Eric has uploaded his consciousness to the Nexus. Two years in, he suddenly finds himself trapped in the world of a gay porn production AI.
Elias
By Metullus 23 Jul 2025
At nineteen, Elias awakens in a sterile, unfamiliar facility. His memories are scattered, his body subdued by medication. Faceless staff, restrained wrists to ankles, he question the purpose of his confinement. As unsettling routines unfold, Elias must search for the truth of his existence and the forces shaping.
Polarity
By KinklyStar456 16 Jul 2025
In a future where desire is programmable, straight men test “Polarity Bands” to monitor arousal. But one volunteer—confident, athletic, and strictly straight—gets a glitched device. With every involuntary moan, his settings shift. He still thinks he’s in control… until his body betrays him, his thoughts twist, and his legs spread.
Jungle Lust: Ethan's Tentacle Surrender
By teenhungtop 10 Jul 2025
Ethan Kane, a 21-year-old rugby god, stirred in the tangled sheets of his king-sized bed, his body sprawled across the mattress like a sculpted monument to masculine perfection.
Sperm donor
By Metullus 10 Jul 2025
Brad is a freshman at Saint Blasius' College. He's abducted by an alien who is collecting sperm. Brad is the alien's latest project.
Debt Camp (ch. 3)
By Local 5 Jul 2025
Debt Camp Finale: Re-programmed by the NeuroLoop and paraded as free-market proof, debt-camp rebel icon John Magee must flex, obey, and sell his own pulse, or watch the billionaires tighten the collar until muscle turns to profit’s last breath.
Alien Unknown
By Wyatt 4 Jul 2025
Wyatt, a senior in highschool, has his life flipped upside down one day after soccer practice. Will he be able to fight the unknown? To fight the urge to give an alien what it desires most from him?
My AI Boss Sold My Ass to Asteroid Miners
By Del Crane 4 Jul 2025
AI and robots does most jobs Ai’s run most corporations. World wide, young people live in huge single sex dorms. Gay Lenny, to get out of his dorm, gets sold for 5 yrs., as a sex slave, to miners in Asteroid Belt.
The Human Bearer (ch. 17)
By Daemon D. Hart 2 Jul 2025
A pregnant Riordan needs to serve as stimulation for seth - and cum - production in front of Lewis's many snakemen husbands.
About our gay science fiction stories
As an online source of gay erotica since 1999, GayDemon Story Library is your ultimate destination for the best adult science fiction with sexy gay guys and aliens you can enjoy for free. The vast collection of gay sex stories we host here has something for everyone who likes reading about a future where humans and species from other galaxies experience different types of sex. Download for free any short story or porn novel you like. Authors upload their stories in this section, so we ask you to respect their copyright. If it happens that you want to post a story you don't own the copyright for, do so only if you have the permission given by the author. To show your appreciation for writers and their hard work, don't forget to leave a vote and comment.