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 Lion of Farside
The Lion of Farside
John Dalmas
R
The Lizard War
The Lizard War
John Dalmas
R
Homecoming
Homecoming
John Dalmas
R
Spawn
Spawn
Shaun Hutson
R
Erebus
Erebus
Shaun Hutson
R
Moonstar Odyssey
Moonstar Odyssey
David Gerrold
R
The Terminator
The Terminator
Shaun Hutson
R
Fire on the Border
Fire on the Border
Kevin O'Donnell, Jr.
R
Captives
Captives
Shaun Hutson
R
Live from Golgotha
Live from Golgotha
Gore Vidal
R
The Savage Stronghold
The Savage Stronghold
Jan Stacy
R
A Matter for Men
A Matter for Men
David Gerrold
R
Collidescope
Collidescope
Grace Chetwin
R
Mars
Mars
Ben Bova
R
Happiness
Happiness
Frederick Pollack
R
Double Blind
Double Blind
Sara Stamey
R
Starbright
Starbright
Damon Castle
R
Islands in the Net
Islands in the Net
Bruce Sterling
R
John Dollar
John Dollar
Marianne Wiggins
R
Utterly Charming
Utterly Charming
Kristine Kathryn Rusch
R
The Scholars of Night
The Scholars of Night
John M. Ford
R
Dead Time
Dead Time
Richard Lee Byers
R
Deathward
Deathward
Richard Lee Byers
R
Red Mercury
Red Mercury
Mark Fabi
R
Glittering Savages
Glittering Savages
Mark Burnell
R
Khalindaine
Khalindaine
Richard Burns
R
White Plume Mountain
White Plume Mountain
Paul Kidd
R
Cardinal's Sin
Cardinal's Sin
Raymond Buckland
R
Planet of Giants
Planet of Giants
Terrance Dicks
R
A Dangerous Place
A Dangerous Place
Janice Brown
R