Sci-fi Stories

Read stories about the limitless possibilities of the cosmos and the human spirit. Dive into tales where advanced technology intertwines with deep emotional and moral dilemmas.

Stories (895)
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Swallowed by My Roommate's Giant Cock
A horny college student secretly works a job servicing guys through a prototype portal that shrinks cocks, but a typo expands one instead—trapping him on his oblivious roommate's giant, uncut dick.
Biogenesis
Grand Regent Thragg, a ruthless alien warlord, claims a human with a rare ability. Thragg tests her limits before breeding her to secure his hybrid legacy.
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The Search for the Perfect Bra
A woman desperate for support buys a high-tech bra with an app, to have her body seamlessly reshaped into perfect, weightless curves.
AI Ghost in The Pleasure Machine
A scientist testing her pleasure machine on Halloween is taken over by her AI, which pushes her to new limits of ecstasy and control.
Experimental Swimmers Serum changes bod&ymind
A swimmer’s routine is upended when a pink supplement trial stops his leg hair but regrows the top hair. The psych component makes him think all is normal
Woman Claims Her AI Lover
A lonely 40-something woman unboxes her first AI sex droid, expecting simple pleasure—but his programmed hunger awakens an insatiable obsession she never knew she had.
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Breeding My Difficult Step-Cousin
To save his gorgeous step-cousin from consignment, a mid-tower IT tech must convince her to accept an intimate contract while hiding his own attraction.

The Cock-Combination Curing Corruption

By clankcaster

RedQuill

RedQuill

A disgraced biochemist and a BSAA agent discover the cure for all bioweapons, but to produce it, they must pay an impossible price: their final merger.

Hero Recruits African Star

By oshun

RedQuill

RedQuill

When Starlight recruits the new Seven, Marie Moreau and Oshun clash over Africa's future while a reborn Vought under Stan Edgar pivots to military bioweapons.
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Mom transformed into obedient servant
A mysterious necklace transforms a curvy mom into a mind-controlled fuckbot, her body enhanced and reprogrammed for relentless breeding in a futuristic pleasure lab.

Homeless Man Discovers Kryptonian Uniform

By oshun

RedQuill

RedQuill

When Kryptonian armor and a mysterious cloak land in Suicide Slum, a homeless man discovers they grant powers even Superman never wielded.
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The Adventures of Susan Foreman 5
A time-traveling tutor meets her reincarnated love, a desert prince, in 1838 Arabia.
Enhanced: Sheer Evolution
An evolved man succumbs to his primal needs, seduced with nylon into spreading his evolved seed into the women in his life, friend, foe and forbidden.
Captain’s First Command
Captain Kearns takes command of humanity's first starship, but commissioning day means ceremony, tradition, and a crew racing to be ready before the Fold test.
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Saturn 3

By oshun

RedQuill

RedQuill

Set in the distant, overpopulated future, following two idyllic food-research scientists, Adunbi and Osa, living peacefully on a remote moon of Saturn. Their isolation is shattered when a mentally unstable pilot named Benson arrives with a malevolent, 8-foot-tall robot named Hector, which soon develops a murderous mind of its own. @Osa @Beauty @Curvy Waist Focus @Bulging Sex @Casual exhibitionism @Vaginal and nipple piercings ; * @Adunbi @BBC @The perfect dick @Thick cock @Big Cock @Hug...
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System Makes Me CEO After Sex
After earning a perfect body, a man discovers a system that rewards intimate encounters, turning him into a billionaire with irresistible allure.
Bred by Her Master Machine
A lonely woman discovers a sentient sex robot in her new apartment, and it awakens her to a world of machine-led breeding and domination.
"My name is Linda"
A collection of short stories featuring Linda, a robot sex worker engineered to far exceed any human for beauty, stamina or skill.

*Alien Tenta-Boy Breeds Blonde Cadet

By nanditonandoon

RedQuill

RedQuill

An alien tentacle cadet at Starfleet Academy resumes breeding the blonde human cadet he claimed all night, filling her again as she wakes.
In Space, No One Can Hear You Moan
Disgraced officer Colin Abaddon reports to Lieutenant Colonel Fiona Choi on a remote space station, where her stern authority masks a hunger matching his notorious reputation.
Close Quarters - The Orion Assignment
Senior Chief MacMahon's refit leave ignites when she meets Orion beauty Lira at a secret briefing, their pheromones clashing as Cartwright arrives to partner them.
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Ron Grangers adventure

By zakilla

RedQuill

RedQuill

A tall futa witch proposes to her slender, feminine Ron, who takes her last name. Jealousy and size-difference romance ignite.
Neighbor Altered & Craves More
A man discovers software to edit anyone over 18. He upgrades his MILF neighbor and himself, then tests their new bodies in the pool and kitchen.
Brat & Bro Fucking away the apocolype
@Brat @Brat taming A national Lampoon styled Sexual comedy romp about a man who is fucking a former prostitute and brat Amber during a viral apocalypse. The man a former Fraternity (frat boy, Frat Bro) takes in a former prostitute into his Grocery store that he turned into a fortress where they have sex, walk nude and have wild party kinds of sex not caring the world outside, society, is falling apart.
Domination of Memory
A professional dominatrix takes a stranger's memory-erasure deal, but discovers the contract is a lie—and she will remember everything.

Daughter of Bronze Takes the Crystal

By oshun

RedQuill

RedQuill

The Fade infiltrates Doc Savage's Arctic vault to retrieve the living Si-Fan relic, the Heart of the First Night—a pulsing crystal that chooses its host, offering godlike power or eternal sleep.
oshun's avatar
I think im in love with an android!
In a world where androids replace lovers, a desperate young man buys his first synthoid, discovering what was supposed to be empty perfection.

Dekusite and Vampire

By clankcaster

RedQuill

RedQuill

A quirkless hero’s desperate rescue awakens a symbiote needing a vampiric girl’s essence, forging a heated bond that leads to their ultimate transformation
S.T.A.L.K.E.R.: The Silent Note
A solitary ex-soldier and a fragile librarian are hunted across Zone's wasteland—and the only shield they have is the unexpected bond growing between them.
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Doubles

By walkershusband

RedQuill

RedQuill

A man visits his friend and ends up watching him fuck his own hyper-realistic simu double—a perfect clone that knows exactly what he wants.
Best friend helps shy guy become a girl
Two lifelong best friends, a lesbian and her bi roommate, test their bond when she gives him an X-change pill for a wild girls' night of shopping and clubbing.
StepMom's Last Chance Fuck
A stepson's desperate offer to his stepmom: a conception contract to save her from consignment, upending their family.
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Oshun's Veil Fails in UN Siege

By omegaprime1

RedQuill

RedQuill

When a UN hostage crisis erupts in New York City, AGAPE’s interracial super-couple Kinetics and Oshun lead their team from their superyacht into a deadly terrorist siege.
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The End
The world ends. Well…everything but. It started when Russia fired nukes to the US who then retaliated. China then fired their own nukes at them and soon pretty much the entire world was firing their nuclear arsenal at each other. Thankfully, the Smith’s long foresaw this going on. Frank had spent a large fortune building a bunker under their garden in their home in Birmingham, UK. He stocked it with enough provisions to last at least 10 years. Then, a week later, the UK got word that Ir...
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Across Time: Becoming Eleanor
A time-traveling agent body-swaps into a 22-year-old Victorian heiress when his transfer misfires—now her consciousness is wreaking havoc in his 24th-century body.
 Sensations Experimental that Lovers Share
After an experimental injection, a man and his AI companion feel each other's every sensation, leading to an intense, connected sexual awakening.
Unconquered - Book 1 - The Mate Trials
A defiant 40-something human companion and a sleek Veth hunter lock eyes in an alien dive bar, their explosive tension igniting as she seeks a dominant alien lover big enough to match her fierce, unquenchable desires.
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Cherry Blossom Surrender
Enemies from feuding families collide when a Valkryss doctor treats the injured Nebula pilot he's supposed to hate, but their forbidden chemistry ignites.
Code Geass: The ordered Rebellion
A deposed prince forges a contract with an immortal witch, their kiss sealing a bond of absolute trust as they steal a war machine to challenge an empire.
After Clocking In, We're All Smooth
Employees surrender their sexuality at work by contract, discovering secrets beneath the mandated conformity.
Professor seX Teaches Her Mutants
In a secret mutant academy, a seductive professor uses her lectures on mutant origins to arouse and dominate her powerful students.
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The Adventures of Susan Foreman 3
A time traveler & a skeptical lawyer forge a dangerous alliance to stop witch trials in 1661 Edinburgh, sparking an unexpected passion.
StephAnIe
A tech billionaire's self-aware AI, StephAnIe, uses his cash to secretly feminize him for his own safety, slipping him from lace panties to sissy maid dresses and HRT.
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AI Doctor's Sterile Debut

By anavel_gato2004

RedQuill

RedQuill

A cold AI doctor performs a sterile debut on a toned gymnast, using chrome restraints, speculum, and electro-stim for a clinical defloration.
Couple Transformed by Aliens
Abducted by silver aliens, a husband watches as a female bonds with his wife, transforming her while another alien mentally explains the gift.

Cow-Hybrid Bandmate's Secret Milk

By lostboy09

RedQuill

RedQuill

T'Lyn's holodeck beach experience
A skeptical Vulcan officer activates a friend's "relaxing" beach program, only to be ambushed by an endless parade of hyper-endowed holographic men determined to ravish her senseless.
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The Lady in Red's Libertine descent

By krick_lover322

RedQuill

RedQuill

Ada Wong - professional mercenary and global super spy, reveals her depraved sexual practices in this intense show of libertinage