R rated sci-fi books

5467 books

Sci-fi books with mature content including explicit sex, graphic violence, or strong language. For adult readers.

The Last Gentile
The Last Gentile
Cary R. Bybee
R
Scenes from an Unholy War
Scenes from an Unholy War
Hideyuki Kikuchi
R
Resurgence
Resurgence
A. American
R
The Aldic Stone
The Aldic Stone
K. M. Kubina
R
Trails of Ascension Vol 1
Trails of Ascension Vol 1
Patrick Clelland Allen
R
Do You Believe in Magic?
Do You Believe in Magic?
Susan Squires
R
Factory World Two: Try Again Book 11
Factory World Two: Try Again Book 11
Joseph Loturco
R
The Coven's Initiates
The Coven's Initiates
Wesley Lowe
R
Deep Strike
Deep Strike
Rick Shelley
R
EarthRise
EarthRise
William C. Dietz
R
Dark of the Sun
Dark of the Sun
Chelsea Quinn Yarbro
R
The Life of the World to Come
The Life of the World to Come
Kage Baker
R
The Reliquary Ring
The Reliquary Ring
Cherith Baldry
R
Engine City
Engine City
Ken MacLeod
R
Omicron Crisis: Adventures from Alpha Centauri
Omicron Crisis: Adventures from Alpha Centauri
D. L. Smith
R
The Radioactive Redhead
The Radioactive Redhead
John Zakour; Lawrence Ganem
R
Ruled Britannia
Ruled Britannia
Harry Turtledove
R
Spaceship Blue Typhoon
Spaceship Blue Typhoon
Diana G. Gallagher
R
Gondez the Monk: A Romance of the Thirteenth Century
Gondez the Monk: A Romance of the Thirteenth Century
William Henry Ireland
R
Avril Crump and Her Amazing Clones
Avril Crump and Her Amazing Clones
Angela Woolfe
R
Steel Ghosts
Steel Ghosts
Michael Paine
R
The Mystery of Lost Valley
The Mystery of Lost Valley
Manly Wade Wellman
R
Murder Ward
Murder Ward
Richard Sapir; Warren Murphy
R
The Hidden Masters of Marandur
The Hidden Masters of Marandur
Jack Campbell
R
The Judas Solution
The Judas Solution
Timothy Zahn
R
Even Vampires Get the Blues
Even Vampires Get the Blues
Katie MacAlister
R
Underland
Underland
Mick Farren
R
Lords of the Earth
Lords of the Earth
Richard Sapir; Warren Murphy
R
Skull Duggery
Skull Duggery
Will Murray
R
Summoning Light
Summoning Light
Jeanne Cavelos
R