R rated sci-fi books

5467 books

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

Circus of the Grand Design
Circus of the Grand Design
Robert Freeman Wexler
R
Cally's War
Cally's War
John Ringo; Julie Cochrane
R
Welcome to the 51st State
Welcome to the 51st State
Carl Huberman
R
Holy Fire
Holy Fire
Bruce Sterling
R
Waterdance
Waterdance
Anne Logston
R
The Stonking Steps
The Stonking Steps
Will Rogers
R
Starmind
Starmind
Spider Robinson; Jeanne Robinson
R
Destroying Worlds
Destroying Worlds
John David
R
The Runaway Asteroid
The Runaway Asteroid
Michael D. Cooper
R
Shadow's Son
Shadow's Son
S. M. Stirling; Shirley Meier; Karen Wehrstein
R
First Evidence
First Evidence
Ken Goddard
R
The Coming Storm
The Coming Storm
Francis Deming Hoyt
R
Unspeakable
Unspeakable
Graham Masterton
R
Better Angels
Better Angels
Howard V. Hendrix
R
Superstition
Superstition
David Ambrose
R
From the Files of the Time Rangers
From the Files of the Time Rangers
Richard Bowes
R
Urchin of the Riding Stars
Urchin of the Riding Stars
M. I. McAllister
R
Night Bites
Night Bites
Nina Bangs
R
The Lion Returns
The Lion Returns
John Dalmas
R
Bloodstone
Bloodstone
Karl Edward Wagner
R
Heavy Metal: FAKK2
Heavy Metal: FAKK2
Kevin B. Eastman; Stan Timmons
R
The Purloined Prince
The Purloined Prince
Ian Wallace
R
Knock on Wood
Knock on Wood
Esther M. Friesner
R
The Martian Race
The Martian Race
Gregory Benford
R
A Boy and His Dog
A Boy and His Dog
Harlan Ellison
R
Untamed Shore
Untamed Shore
Silvia Moreno-Garcia
R
The Mirror Empire
The Mirror Empire
Kameron Hurley
R
First Contact?
First Contact?
Hugh Walters
R
The Tower at the End of the World
The Tower at the End of the World
Brad Strickland
R
Her Smoke Rose Up Forever
Her Smoke Rose Up Forever
James Tiptree Jr.
R