R rated sci-fi books

5467 books

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

Overdraft: The Orion Offensive
Overdraft: The Orion Offensive
John Jackson Miller
R
Childe Roland
Childe Roland
Samantha Lee
R
Road to Nowhere
Road to Nowhere
Christopher Pike
R
The Lightning War
The Lightning War
Miles Phoenix
R
The Little Helliad
The Little Helliad
Chris Morris; Janet Morris
R
ENCODED MINDS
ENCODED MINDS
Kfir Luzzatto
R
White Wing
White Wing
Gordon Kendall
R
Stuck Fast in Yesterday
Stuck Fast in Yesterday
Heather Kellerhals-Stewart
R
Accidentally in Love with ... a God?
Accidentally in Love with ... a God?
Mimi Jean Pamfiloff
R
The Magnificent Wilf
The Magnificent Wilf
Gordon R. Dickson
R
Sliders: The Novel
Sliders: The Novel
Brad Linaweaver
R
You Only Die Twice
You Only Die Twice
Ryan Hughes
R
Embassy War
Embassy War
Walter Knight
R
Morris Hollett and St. Vernon's Ward for Strange and Unusual Diseases
Morris Hollett and St. Vernon's Ward for Strange and Unusual Diseases
W. J. McKain
R
The Bones of Ruin (Bones of Ruin Trilogy)
The Bones of Ruin (Bones of Ruin Trilogy)
Sarah Raughley
R
Mr. Wicker's Window
Mr. Wicker's Window
Carley Dawson
R
On the Boundaries of Darkness
On the Boundaries of Darkness
Niel Hancock
R
Cry Wolf
Cry Wolf
Aileen La Tourette
R
Tyranopolis
Tyranopolis
A. E. van Vogt
R
Big Thunder
Big Thunder
Peter Atkins
R
Tsar Wars
Tsar Wars
Stephen Goldin
R
The Dark's Mistress
The Dark's Mistress
Michele Hauf
R
Undersea
Undersea
Paul Hazel
R
The Sword War
The Sword War
Shawn Whitney
R
Burning for Revenge
Burning for Revenge
John Marsden
R
Beyond Sanctuary
Beyond Sanctuary
Janet Morris
R
Do You Know Me
Do You Know Me
Nancy Farmer
R
In the Garden of Iden
In the Garden of Iden
Kage Baker
R
Cosm
Cosm
Gregory Benford
R
The Demon King
The Demon King
Chris Bunch
R