Science Fiction Xxx Stories

1,000 results
Orientation
Length
Category
Source
Infinite Scroll
SmutMD: The World's Biggest Erotic Literature Search Engine.
© 2026 SmutMD.com
Create your own smut fantasy with AI

Fallout XXX

by Pervyboy1 on Nov 24, 2015
Science Fiction

War...War never changes. These words are the motto of the post-apocalyptic series fallout, which argues that nuclear Armageddon won't end humanity, but will add another bloody chapter in humanity's history. however, like any species, for it to survive it must reproduce and go onward from there. These will explore those areas of the game that most of the seri...

XXXecil's: The CockOut Bk. 01

by xxxecil on Sep 14, 2017
NonHuman

The Kid would never get laid at this rate. Xavier frowned from the booth where he nursed a martini intended to make him appear fun-loving. But he wasn't here to get wasted. This - watching men trying, and failing to pick up chicks was his job. One he was normally better at. His client, a stuttering and pimple-faced ginger IT geek blundered something about...

XXXecil's: The CockOut Bk. 02

by xxxecil on Sep 14, 2017
NonHuman

Traffic was backed up. Giving him time to think. Didn't really want to argue with January anymore. Nothing more to be said. Just thinking. Flipping through radio stations. A perky female announcer remarked on the latest government shutdown, he'd never paid much attention to politics before. But now? He brushed a strand of his long, raven-dark hair away from...

XXXecil's: The CockOut Bk. 03

by xxxecil on Sep 14, 2017
NonHuman

"Please don't jump out of the car," his chauffeur asked. "We are deeply empathic, and it would cause great distress if you injured yourself." Her voice was a near shout - to make herself heard over the roar of the wind. His chiseled pectorals heaved, the wind gathering a strand of his long, dark hair. "Not like you care, you're a predator - I'm your meat."...

Hell's Housewife Ch. 03

by xxxecil on Sep 13, 2017
NonHuman

Book Three The Mayor of the city grunted, as he slipped out of LindaQueenMotherBreeder's tight ass. He quivered in bliss, then gurgled as the transfector cells attacked his DNA. The shapely rumps of eight other Breeders wiggled temptingly before him. Though he had tried his best to pleasure all of them, he was now spent; having spewed into the dark holes mo...

Hell's Housewife Ch. 01

by xxxecil on Sep 11, 2017
NonHuman

Book One She didn't want big tits. Her figure, just as she was, seemed perfect for the life she led. Sarah had no use for the great globes of jiggling mammary that those sluts in the magazine had possessed. The discovery of the hidden magazine stash while cleaning had come as a blow to her, as slap in the face! Yet...also a reminder... Sarah clicked her tu...

Hell's Housewife Ch. 02

by xxxecil on Sep 13, 2017
NonHuman

Book Two "The Succubus made me do it." Reported Jim Caldwell, the local Trekkie/Area-51/UFOlogist conspiracy nut. "You shouldn't read that trash, Jimmy." Admonished the prim, proper, flat-chested Sarah. Adjusting the tight bun of her graying hair, to maintain as much dignity as was possible in a supermarket checkout-lane. "That's just what they want you t...

Tit for Tat

by xxxecil on Sep 19, 2017
NonHuman

She didn’t know what she was looking for. Cecilia had always been a fairly independent sort; who else would attempt hiking alone in the Alaskan Tundra? It was summer now, a little warmer, but how many 21 year-old girls would even try? Of course, it would have been far easier to simply sit back at home, and let others take care of her. And she had plenty of o...

Body Shifters: C.L.A.I.R.E. Ch. 03

by xxxecil on Sep 25, 2017
NonHuman

"Cherry-Pie; with extra napkins." I breathed luridly into the receiver of my wireless phone as I paced back and forth through my lonely, sparse, and untidy apartment. That was the code word for two prostitutes. I had to have an extra one this time. As long as you were content to never, ever be in the limelight, there were certain perks that came with workin...

XXXanth Novels: Dana 1

by Athena_e19 on Sep 11, 2017
NonHuman

*Author's note: These are a series of stories which I am basing on one of my all time favorite fantasy works, the Xanth Novels. The actual books contain mild erotica and were a great influence on me during my earlier years. They speak of sex between numerous fantasy creatures including centaurs, elves, nymphs, harpies, mermaids, fauns, fairies, humans, drago...