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 Covenant of the Crown
The Covenant of the Crown
Howard Weinstein
R
Descent Into Hellios
Descent Into Hellios
Rick Campbell
R
The Butcher of Glastonbury
The Butcher of Glastonbury
David Bowker
R
Noninterference
Noninterference
Harry Turtledove
R
Rewind
Rewind
Terry England
R
Invader
Invader
William F. Wu
R
Moving On
Moving On
Emma Harrison
R
Island Woman
Island Woman
Richard Sessions
R
Her Klingon Soul
Her Klingon Soul
Michael Jan Friedman
R
The Horsemasters
The Horsemasters
Joan Wolf
R
The Blooding
The Blooding
Patricia Windsor
R
The Genetic General
The Genetic General
Gordon R. Dickson
R
Hello Summer, Goodbye
Hello Summer, Goodbye
Michael G. Coney
R
The Broom of the System
The Broom of the System
David Foster Wallace
R
Common Enemy
Common Enemy
M. C. Sumner
R
The Doll Who Ate His Mother
The Doll Who Ate His Mother
Ramsey Campbell
R
Until Relieved
Until Relieved
Rick Shelley
R
Putting Up Roots
Putting Up Roots
Charles Sheffield
R
The Homing
The Homing
John Saul
R
Heart of the Deep: An Alien Romance Short Read
Heart of the Deep: An Alien Romance Short Read
Adrian Blue
R
Deathgrip
Deathgrip
Brian Hodge
R
The Eternal Enemy
The Eternal Enemy
Christopher Pike
R
Third Player
Third Player
Warren James Palmer
R
Dark Seeker
Dark Seeker
K. W. Jeter
R
The Child in Time
The Child in Time
Ian McEwan
R
Skitzo
Skitzo
Graham Marks
R
Love Lost
Love Lost
Michael Anderle
R
The Burrowers Beneath
The Burrowers Beneath
Brian Lumley
R
Dropship
Dropship
Jonathan Yanez
R
Aliens vs. Humans
Aliens vs. Humans
T. Jackson King
R