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.

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.

9.6 (33) 1253 84 Min Comments

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.

9.5 (46) 2273 9 Min Comments

Alex, Hive Mother

By Alex Aims 7 Apr 2025

Alex thought John was just a hot new coworker—until a steamy stockroom encounter revealed John’s alien secret. Now trapped in a pulsating hive, Alex births a monstrous brood, his body no longer his own.

9.3 (23) 2849 28 Min Comments

James the Space Diplomat

By Oliver V. Cub 7 Apr 2025

It is thousands of years after Earth discovers space-travel. Sex has become an important tool for an intergalactic diplomat. This story follows our stocky space cadet, James, on his visit to an alien planet. When the planet's leader takes a liking to him, will his can-do attitude leave a good impression for Earth?

9.6 (44) 1187 8 Min Comments

Serum 3379

By ShawnTVWrites 2 Apr 2025

Julian Hayes enrolls in an experimental weight loss drug trial, hoping for a fresh start and a boost of confidence. After a heated morning with Monty—his insufferably charming, would-be boyfriend—Julian heads to the clinic for his first injection.

8.5 (40) 6201 16 Min Comments

The Academy (ch. 2)

By Rochin 30 Mar 2025

As the start of term draws closer and more students arrive, Eron has his first sexual experience with another guy.

9.3 (16) 941 14 Min Comments

Slavery in Albion

By Mattspank 26 Mar 2025

A fantasy about a Great Britain which has legalised slavery for men

8.5 (31) 2404 18 Min Comments

Haven P. 1

By ShawnTVWrites 25 Mar 2025

A team from Haven embark on a mission to reclaim earth and rebuild society.

9.2 (23) 1027 19 Min Comments

The Driftwalker

By Torsten 24 Mar 2025

The spaceship’s tiny cabin forces intimacy.

7.0 (21) 1000 11 Min Comments

Parasite Edging Arena

By PhilipLane 19 Mar 2025

In this TV show, human beings volunteer as a battleground for two unique parasites. One inhabits the testicles, avoiding the host's ejaculation at all costs. The other attaches to the host's penis, trying to enforce orgasm. These parasites engage in a struggle using their human hosts, with only one able to emerge victorious.

9.2 (38) 5947 29 Min Comments

The Academy

By Rochin 18 Mar 2025

A few students arrive early to the Civil Academy and begin settling in.

8.5 (18) 1708 20 Min Comments

Chosen by Aliens

By Staffido 15 Mar 2025

Muscular men were captured by aliens just to be dairy cows

8.7 (71) 8720 14 Min Comments

New Eden

By G550 15 Mar 2025

In 2150 the Feminox Syndrome had eliminated the entire female population of Heredon, the new Earth. Four tribes remained: The Monoliths, Selynith, Mechnoctus and Grubmash.

8.9 (12) 940 9 Min Comments

The Beast Dines Out (ch. 32)

By Kyle Michel Sullivan 6 Mar 2025

Dirc and Irin establish their business...

8.4 (13) 540 11 Min Comments

The Beast Dines Out (ch. 31)

By Kyle Michel Sullivan 5 Mar 2025

Dirc handles Barnes and establishes his pack...

8.9 (8) 536 16 Min Comments

The Beast Dines Out (ch. 30)

By Kyle Michel Sullivan 3 Mar 2025

Dirc makes a deal with the power that be...

8.6 (8) 300 10 Min Comments

A Soldier's Duty

By B David Ethan 2 Mar 2025

Far in the future, an elite fighting force orbiting Tau Ceti has developed a unique culture centered around masculinity and sodomy. A hung corporal visiting from Earth gets to experience this unique culture first hand--and gets his massive balls drained in some best-in-the-galaxy hole.

9.1 (66) 2720 7 Min Comments

The Beast Dines Out (ch. 29)

By Kyle Michel Sullivan 2 Mar 2025

Dirc makes a convert to his group...maybe two of them...or even three...

9.4 (8) 266 9 Min Comments

Slavery in 3050 (ch. 2)

By Sadist Daddy 1 Mar 2025

Slave experience first day as slave and sees the same world he grew up in from different perspective.

8.2 (9) 2618 12 Min Comments

The Beast Dines Out (ch. 28)

By Kyle Michel Sullivan 1 Mar 2025

Dirc and the Beast discuss the next steps...

9.5 (8) 255 10 Min Comments

The Beast Dines Out (ch. 27)

By Kyle Michel Sullivan 26 Feb 2025

Dirc uses Griff and offers him a new way to live...

9.5 (6) 305 7 Min Comments

Alphas: School for Muscle Men (ch. 2)

By RedJulian 25 Feb 2025

Ricky meets his new master at the school for Alphas.

8.8 (44) 2871 7 Min Comments

Alphas: School for Muscle Men

By RedJulian 24 Feb 2025

Ricky's freakish muscularity and overpowering sex drive lead him to an institute for young men just like him.

8.8 (34) 2735 4 Min Comments

The Beast Dines Out (ch. 26)

By Kyle Michel Sullivan 24 Feb 2025

Dirc takes Lon and a couple of hostages to Irin's hideout.

9.3 (9) 388 14 Min Comments

Slavery in 3050

By Sadist Daddy 23 Feb 2025

It's year 3050, alot has changed, in year 2040 earth face a natural crisis, no enough food, water or clean air to breath. But man didn't wanted to stop exploiting the nature so they came up with some evil and sexy solutions.

6.7 (14) 2449 13 Min Comments

The Alien Plant

By sweetcum 22 Feb 2025

My car stopped working in the middle of a forest. After getting lost in the woods I encountered a weird plant which had an unsettling plan for me.

7.9 (40) 3081 6 Min Comments

The Beast Dines Out (ch. 25)

By Kyle Michel Sullivan 17 Feb 2025

Dirc turns the tables on his captors.

9.5 (8) 301 10 Min Comments

The Beast Dines Out (ch. 24)

By Kyle Michel Sullivan 15 Feb 2025

Dirc is arrested but may have a backup plan, using Irin and a hostage...

9.7 (6) 285 13 Min Comments

The Beast Dines Out (ch. 23)

By Kyle Michel Sullivan 9 Feb 2025

Dirc and Irin decide on a plan of action...and take a hostage...

9.6 (9) 272 11 Min Comments

The Mikhail Chronicles: Beginnings (ch. 3)

By VladPete40 8 Feb 2025

love to pay homage to previous vampire movies, tv shows and stories... here Mikhail's plans of the great awakening are revealed... let m know what you think... want more of, love hate etc

8.9 (8) 798 16 Min Comments

The Beast Dines Out (ch. 22)

By Kyle Michel Sullivan 7 Feb 2025

Dirc and Irin catch a car thief and realize they have changed.

9.5 (6) 277 11 Min Comments

The Beast Dines Out (ch. 21)

By Kyle Michel Sullivan 5 Feb 2025

Dirc and Irin are close to being found by the Feds, so have to make new plans.

9.4 (8) 274 12 Min Comments

The Beast Dines Out (ch. 20)

By Kyle Michel Sullivan 2 Feb 2025

The Beast makes a request for more of the same...

9.6 (7) 264 10 Min Comments

The Beast Dines Out (ch. 19)

By Kyle Michel Sullivan 30 Jan 2025

Irin and Dirc pay off their debts and set a new path forward.

9.5 (8) 287 12 Min Comments

Twink Assgasm Project (ch. 15)

By Mr.X 29 Jan 2025

The Finale of the 100+ 18-year-old Twinks. Most of you faithful will have anticipated the beginning of the end; A few surprises and future Fantasy Sci-fi Will be cumming. I hope you have enjoyed it! It may not be Sci-fi and Fantasy - there are 18-year-old powers in play.

9.7 (23) 1576 26 Min Comments