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 listed by date.

9.2
17 Votes

The New Terrans

Story by PCLatex

21 Mar 2024 954 Readers comments 13 Min Read

The isolated Earth Colony of New Terra is an unusual world. The vegetation is more fungal than vegetable, the animals few and far between and the human population is mutating ... Though the population is stable increasing numbers of male births are Gay and have genitals unlike a normal man ...

Topics: Anal Sex, Bondage, Rubber, Sci-Fi, Oral & Blowjobs

9.8
7 Votes

The Block (ch. 4)

Story by Adam

12 Mar 2024 493 Readers comments 10 Min Read

Cracks began to show more clearly though, at first it was little things. Diego took me to the cafe he took me to that first day, where he’d lay me back on the table and fucked me not caring who saw. The look on the girl’s face told me that wasn’t the last time he’d done that in the cafe, and that I wasn’t the only one. She knew as well as I did that survival meant doing things we ...

Topics: Fiction, Romance, Sci-Fi, Dystopian, Love

9.2
38 Votes

New bull (ch. 3)

Story by Staffido

22 Feb 2024 5583 Readers comments 11 Min Read

The jock finally understood what he was born for. His only value in this life is to produce sperm and be a milking bull....

Topics: Muscle, Bondage, Forced, Edging, Milking, Sci-Fi, Master & Slave, Cum Control

9.6
15 Votes

Into Another World (ch. 13)

Story by Cloudboy91

13 Feb 2024 1843 Readers comments 10 Min Read

Jeremy is invited back to a party hosted by Trent and Nico.

Topics: Anal Sex, Muscle, Rough Sex, Big Dick, Group Sex, Alpha Male, Sci-Fi, Power Bottom, Big Ass

9.2
62 Votes

New bull (ch. 2)

Story by Staffido

7 Feb 2024 6600 Readers comments 7 Min Read

The boss took one of his cum-producing bodybuilders as the main course. His body was no longer his.

Topics: Muscle, Bondage, Forced, Milking, Sci-Fi, Master & Slave, Rape, Boss, Bodybuilder

9.8
8 Votes

Secrets Among the Stars (ch. 2)

Story by Ottie Otter

7 Feb 2024 226 Readers comments 14 Min Read

Jayson awakes to a klaxon alarm ringing through out the station. An evacuation order has been called, but what's happening?

Topics: Fiction, Sci-Fi, No Sex

7.6
27 Votes

Alien abduction

Story by sweetcum

5 Feb 2024 2128 Readers comments 6 Min Read

Bruce is on his way home. Suddenly he gets kidnapped by aliens and is put in a cage in the middle of the town. He is exposed to do all the embarrassing things in public.

Topics: Public Sex, Dildo, Sci-Fi, Master & Slave, Aliens

9.2
14 Votes

Texas Slave Auction (ch. 13)

Story by Slave Bear

5 Feb 2024 1959 Readers comments 21 Min Read

An exploration of what happens to one slave after the end of his service and his attempt to reenter society.

Topics: Chastity, Big Dick, Sci-Fi, Master & Slave, Submission, Control

8.7
51 Votes

Milking factory

Story by Staffido

3 Feb 2024 5358 Readers comments 4 Min Read

Matthew gives a tour of the milking factory where kidnapped and bound muscle men are milked.

Topics: Muscle, Bondage, Forced, Milking, Sci-Fi, Master & Slave

9.5
11 Votes

Secrets Among the Stars

Story by Ottie Otter

3 Feb 2024 319 Readers comments 19 Min Read

This story follows Alexander Riggs and his boyfriend, Jayson Kramer, two soldiers in the Aggregate Earthen Forces as they take on an alien race bent on destroying humanity while trying to keep their relationship intact.

Topics: Romance, Sci-Fi, Sex, Love

9.2
120 Votes

Fruit of the Tree

Story by Local

1 Feb 2024 4008 Readers comments 14 Min Read

An FBI agent investigates an abandoned farm, on federal property, of a modified plant, that is suspected of being used to grow marijuana, and possibly linked to the disappearance of several young me.

Topics: Muscle, Abduction, Military, Milking, Sci-Fi, Transformation, Power Bottom, Amputee, Submission, Body Worship, Supernatural, Dubcon

9.0
79 Votes

New bull

Story by Staffido

31 Jan 2024 7864 Readers comments 8 Min Read

Scientists have discovered that the semen of bodybuilders contains a substance that can be used in many ways. The black market has found a way to extract sperm.

Topics: Muscle, Bondage, Abduction, Forced, Milking, Sci-Fi, Master & Slave, Bodybuilder

9.4
37 Votes

The Block

Story by Adam

27 Jan 2024 2505 Readers comments 7 Min Read

Mike lived in a world where the sky was always gray and the air was thick with pollution. Society had retreated from the sprawling cities of the past, now the tens of billions of people that populated the earth were distributed among massive building blocks. Governments were corrupt, blocks were ruled by de facto militias and gangs. Life wasn’t easy.

Topics: Public Sex, Forced, Relationship, Bareback, Sci-Fi, Dystopian

8.3
15 Votes

Attahachee County (ch. 2)

Story by Double Dee

1 Jan 2024 1869 Readers comments 7 Min Read

Noa's brothers are counting on him, but will he rise to the occasion? (This chapter is a quick setting setter before we reenter Cornell properly in the next one. Check back for it tomorrow.)

Topics: Fiction, Chastity, Abduction, Sci-Fi, No Sex

9.6
14 Votes

Texas Slave Auction (ch. 12)

Story by Slave Bear

29 Dec 2023 1675 Readers comments 23 Min Read

The slave's morning routine is altered as Frank has some new ideas in store for slaves L024 and C865. L024 continues to serve the sexual needs of its Lord and its Master and slave F385 begins to adapt to its new life.

Topics: Alpha Male, Sci-Fi, Master & Slave, Submission, Control

9.5
17 Votes

The Human Bearer (ch. 2)

Story by Daemon D. Hart

28 Dec 2023 1723 Readers comments 16 Min Read

Riordan goes to a party where his owner humiliates him and makes him cum while others watch.

Topics: Public Sex, Humiliation, Sci-Fi, Aliens

8.9
9 Votes

Cumspiracy (ch. 2)

Story by Mr B Queer

10 Dec 2023 758 Readers comments 5 Min Read

Chris's boss invited him him to go see some cum hungry aliens at his house... at midnight. But is it just a ploy to get some one on one bouncy bouncy time with him?

Topics: Cum, Sci-Fi, Aliens

7.4
6 Votes

A Hero in the making

Story by Prenum

8 Dec 2023 1011 Readers comments 13 Min Read

A long running story which will be following Alister, a soon to be developed superhuman, in a new world of powers.

Topics: Interracial, Military, Sci-Fi, Superhero

9.6
22 Votes

Keeping Secrets (ch. 4)

Story by Grant

26 Nov 2023 920 Readers comments 122 Min Read

Another comes along, one who seeks those rumored to have come before him.

Topics: Anal Sex, Fiction, Sci-Fi, Oral & Blowjobs

9.1
36 Votes

Alien Abduction by Beast Men

Story by MontanaBiGuy

25 Nov 2023 2559 Readers comments 21 Min Read

Story of a recently divorced man getting reintroduced to sex with men. And aliens!

Topics: Anal Sex, Group Sex, Sci-Fi, Oral & Blowjobs, Aliens, Furry

9.4
29 Votes

Texas Slave Auction (ch. 11)

Story by Slave Bear

22 Nov 2023 2611 Readers comments 28 Min Read

Louis Handleman says good bye to one breeding slave and prepares to welcome its replacement, E754.

Topics: Bondage, Abduction, Alpha Male, Sci-Fi, Master & Slave, Submission, Control

9.4
28 Votes

Texas Slave Auction (ch. 10)

Story by Slave Bear

17 Nov 2023 2148 Readers comments 21 Min Read

Slave E754 enters the Texas Slave Market where it is processed, sold, and modified for its new owner.

Topics: Bondage, Abduction, Alpha Male, Sci-Fi, Master & Slave, Submission, Control

8.8
11 Votes

The Hole

Story by WantonOne247

6 Nov 2023 2682 Readers comments 7 Min Read

Sam and Dean go to a furry convention in Vegas

Topics: Anal Sex, Dildo, Transgender, Sci-Fi, Pegging, MTF, Body Modification, Furry

7.7
46 Votes

Alien Re-erection

Story by Baryon

4 Nov 2023 4584 Readers comments 4 Min Read

Three Americans taken captive aboard an alien vessel. Kyle and Jackson prove easy enough to milk for their seed. But, the aliens encounter a problem with Ben.....

Topics: Milking, Sci-Fi, Aliens, BDSM, Straight to Gay