R rated sci-fi books

5467 books

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

Crown of Renewal
Crown of Renewal
Elizabeth Moon
R
Battle Earth IV
Battle Earth IV
Nick S. Thomas
R
Battle Earth V
Battle Earth V
Nick S. Thomas
R
Battle Earth III
Battle Earth III
Nick S. Thomas
R
Buried Starship
Buried Starship
Anthony J Melchiorri
R
Invasion: New York
Invasion: New York
Vaughn Heppner
R
Anarchate Vigilante
Anarchate Vigilante
T. Jackson King
R
Alien Shores
Alien Shores
Vaughn Heppner
R
Target
Target
Mike Shepherd
R
The Primal Hunter 3
The Primal Hunter 3
Zogarth
R
Procyx
Procyx
O. R. Savage
R
The Eye of the Gods
The Eye of the Gods
Dennis Fawcett; David Nott
R
Unwind (Unwind Dystology)
Unwind (Unwind Dystology)
Neal Shusterman
R
Swords Against the Shadowland
Swords Against the Shadowland
Fritz Leiber; Robin W. Bailey
R
No Easy Way Home: The Road Between Series - Two
No Easy Way Home: The Road Between Series - Two
T.J. Schmidt
R
Rinn's Star
Rinn's Star
Paula Downing King
R
Siduri's Net
Siduri's Net
Paula Downing King
R
Mad Roy's Light
Mad Roy's Light
Paula Downing King
R
Defiance of the Fall
Defiance of the Fall
TheFirstDefier
R
Defiance of the Fall 4
Defiance of the Fall 4
TheFirstDefier
R
The Uprising
The Uprising
Kristina Schram
R
Assail
Assail
Ian C. Esslemont
R
Behemoth
Behemoth
Vaughn Heppner
R
Invasion: China
Invasion: China
Vaughn Heppner
R
Invasion: California
Invasion: California
Vaughn Heppner
R
Zel
Zel
Donna Jo Napoli
R
The Grace Year: A Novel
The Grace Year: A Novel
Kim Liggett
R
A Slow Burning
A Slow Burning
Stanley Pottinger
R
Soda Pop Soldier
Soda Pop Soldier
Nick Cole
R
Faces of the Dead
Faces of the Dead
Suzanne Weyn
R