Amongst Us (ch. 2)
By Grant 25 Aug 2025
We pick up Noah's story eighteen months later.
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.
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)
Cursed (ch. 10)
By Jesse Christian 2 Aug 2025
Jackson gets some advice from an unlikely source as he attempts to make things right with Tyler after the football fuckfest
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.
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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.
Body take
By shifterfic 28 Jun 2025
Jock's body get's taken over by his neighbour and fucks his flatmate.
Heat, Memory and Riley
By Blue moon 27 Jun 2025
It is the start of a new life of Kai, he *was* a normal men but future will bring great changes to him, literally.
Becoming Wesker's Experiment (ch. 2)
By Layla 24 Jun 2025
The inside of the torn building where Alpha was bringing Chris to was as horrific as the hunk remembered it to be during his failed first mission.
A Long Way Home
By Grant 17 Jun 2025
They were finished with their mission into deep space and heading back, when something went wrong.
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Trapped
By trappedinthecl0set 16 Jun 2025
In future dystopia, gay man is forced to suck straight dick.
The Last Neighbors (ch. 4)
By DaddyDom 13 Jun 2025
He began to rub my skin, his fingers tracing the lines of my muscles. His touch was light, almost feather-like, but it sent shivers down my spine. I watched as his hand moved higher, his fingers brushing against the sensitive skin of my inner thigh. My breath hitched in anticipation, my body arching into his touch.
The Stereotype Ray
By astrolub 10 Jun 2025
A cat burglar steals the fabled Stereotype Ray and tests it on an unsuspecting townsman.
Serum 3379 (ch. 3)
By ShawnTVWrites 27 May 2025
Julian learns the effects of the drug trial and how ther was a mix up that has changed him potentially forever.
Bill and Me and the Heliopause
By Petr-Johan 24 May 2025
Two gay men find that the rest of their lives will be spent together in space.
Haven P. 1 (ch. 3)
By ShawnTVWrites 20 May 2025
The team from Haven meet the survivors of the Earths Cataclysm, learn and prepare for war.
Submission at the Oasis
By Zander Saldana 2nd 12 May 2025
Space Marine Jareth is lost after a battle wipes out his platoon. He learns to submit and how he's going to serve in a new life. This is campy smut with space marines, tentacles, and twist I hope you like.
The Academy (ch. 3)
By Rochin 26 Apr 2025
Akeem introduces Eron to a new friend and they have a gay old time. Eron loses his anal virginity.
In Seclusion
By Grant 14 Apr 2025
Gustave wanted to a place he could live as he choose. A place he didn't have to worry about what others thought. No one could guess to what lengths he would go to get it.
A Soldier's Duty (ch. 2)
By B David Ethan 8 Apr 2025
Dan cruises the base's gym for a pump and finds way more than he bargained for.
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.