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 Beast
The Beast
Walter J. Sheldon
R
The Beast Within
The Beast Within
Jane Jensen
R
Goldclimbers
Goldclimbers
Nancy Luenn
R
The Sea Child
The Sea Child
Carolyn Sloan
R
The Brothers' War
The Brothers' War
Jeff Grubb
R
The Bloodstone
The Bloodstone
Ken Eulo
R
Augustus Rex
Augustus Rex
Clive Sinclair
R
The Changing
The Changing
F. W. Armstrong
R
The Dark Tower II
The Dark Tower II
Stephen King
R
Dream Messenger
Dream Messenger
Masahiko Shimada
R
The Chernagor Pirates
The Chernagor Pirates
Dan Chernenko
R
Deadly Relations
Deadly Relations
Joseph Locke
R
Snowed in With the Alien Soldier: A Nova Brides Holiday Romance
Snowed in With the Alien Soldier: A Nova Brides Holiday Romance
Thea Dane
R
Petrified
Petrified
Joseph Locke
R
Dead City
Dead City
Joe McKinney
R
Hunted By The Alien Assassin
Hunted By The Alien Assassin
Ella Maven
R
The Saracen: Land of the Infidel
The Saracen: Land of the Infidel
Robert Shea
R
The Executioner
The Executioner
Jay Bennett
R
The First Casualty
The First Casualty
David L. Seidman
R
Queensblade
Queensblade
Susan Shwartz
R
Cyberstealth
Cyberstealth
S. N. Lewitt
R
Cybertech Killing Zone
Cybertech Killing Zone
Ryder Syvertsen
R
Songs of Chaos
Songs of Chaos
S. N. Lewitt
R
Artifact
Artifact
Jeremy Robinson
R
Suffer the Children
Suffer the Children
John Saul
R
Son of the Hero
Son of the Hero
Rick Shelley
R
Odyssey
Odyssey
Bill McCay; Stan Lee
R
The New Rebellion
The New Rebellion
Kristine Kathryn Rusch
R
Ruins of the Earth (Ruins of the Earth Series Book 1)
Ruins of the Earth (Ruins of the Earth Series Book 1)
Christopher Hopper;J N Chaney
R
Satori
Satori
Dennis Schmidt
R