R rated sci-fi books

5467 books

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

Gridlinked
Gridlinked
Neal Asher
R
The Final Crusade
The Final Crusade
Will Murray
R
The Space Pirate
The Space Pirate
Jack Vance
R
Timecrime, Inc.
Timecrime, Inc.
Debra Doyle; James D. Macdonald
R
Mob Psychology
Mob Psychology
Will Murray
R
Tom Swift and His Aerial Warship
Tom Swift and His Aerial Warship
Victor Appleton
R
Barney on Mars
Barney on Mars
Margaret Goff Clark
R
Tom Swift and the Electronic Hydrolung
Tom Swift and the Electronic Hydrolung
Victor Appleton, II
R
Tom Swift and His Aquatomic Tracker
Tom Swift and His Aquatomic Tracker
Victor Appleton, II
R
Discover the Destroyer
Discover the Destroyer
K. A. Applegate
R
Expendable
Expendable
James Alan Gardner
R
Jackrabbit
Jackrabbit
Ian Thomas Healy
R
Mundane's World
Mundane's World
Judy Grahn
R
Catalyst: A Novel of Alien Contact
Catalyst: A Novel of Alien Contact
Nina Kiriki Hoffman
R
The Adventures of Commander Zack Proton and the Wrong Planet
The Adventures of Commander Zack Proton and the Wrong Planet
Brian Anderson
R
Gracie, the Pixie of the Puddle
Gracie, the Pixie of the Puddle
Donna Jo Napoli
R
The Earth Will Shake
The Earth Will Shake
Robert Anton Wilson
R
A Plague of Change
A Plague of Change
L. Warren Douglas
R
Monolith
Monolith
John Passarella
R
Once Haunted, Twice Shy
Once Haunted, Twice Shy
H. P. Mallory
R
Angry Moon
Angry Moon
Terrill Lankford
R
The Wealdwife's Tale
The Wealdwife's Tale
Paul Hazel
R
Master of Space and Time
Master of Space and Time
Rudy Rucker
R
The Bastard King
The Bastard King
Dan Chernenko
R
The Human Thing
The Human Thing
Kathleen H. Nelson
R
Zoe's Tale
Zoe's Tale
John Scalzi
R
The Lost Patrol
The Lost Patrol
Vaughn Heppner
R
Strange Notions
Strange Notions
Jack Vance
R
A Just Determination
A Just Determination
John G. Hemry
R
Finger-Lickin' Strange
Finger-Lickin' Strange
Jeremy Roberts
R