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 Blind Worm
The Blind Worm
Brian M. Stableford
R
Ancient Light
Ancient Light
Robert Hood
R
The Essential Frankenstein
The Essential Frankenstein
Mary Shelley
R
Edward Maret: A Novel of the Future
Edward Maret: A Novel of the Future
Robert I. Katz
R
Crawlers
Crawlers
Andrew Matthews
R
Angry Young Spaceman
Angry Young Spaceman
Jim Munroe
R
After the Downfall
After the Downfall
Harry Turtledove
R
The Magicians and Mrs. Quent
The Magicians and Mrs. Quent
Galen Beckett
R
Mars Life
Mars Life
Ben Bova
R
The Black Moon
The Black Moon
Saul Dunn
R
World War Moo
World War Moo
Michael Logan
R
White Python
White Python
Mark Channing
R
What Rough Beast
What Rough Beast
Harry R. Squires
R
Unbreakable
Unbreakable
W. C. Bauers
R
Alien Flesh
Alien Flesh
Seabury Quinn
R
Thunderbolt of the Spaceways
Thunderbolt of the Spaceways
Hereward Ohlson
R
The Henry Game
The Henry Game
Susan Davis
R
The Rift War
The Rift War
Emmanuel M. Arriaga
R
The Alien Within
The Alien Within
Adriana deBolt
R
Orbus
Orbus
Neal Asher
R
Star of Damocles
Star of Damocles
Andy Hoare
R
Warpsword
Warpsword
Dan Abnett; Mike Lee
R
Wallis's War
Wallis's War
Kate Auspitz
R
The Last Crime
The Last Crime
John Domatilla
R
Arrival of the Prince
Arrival of the Prince
James Rutledge
R
Ghosts of Shanghai
Ghosts of Shanghai
Julian Sedgwick
R
Invasion of the Bane
Invasion of the Bane
Terrance Dicks
R
The Collapse Collection - Five Books Post Apocalyptic Anthology
The Collapse Collection - Five Books Post Apocalyptic Anthology
Derek Shupert
R
Egyptians
Egyptians
Matt Forbeck
R
Vamps
Vamps
Nancy A. Collins
R