R rated sci-fi books

5467 books

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

Fire's of Freedom
Fire's of Freedom
D. J. Holmes
R
Hard Crash
Hard Crash
Ryan Hughes
R
Probe
Probe
Edward M. Lerner
R
Things As They Are: or The Adventures of Caleb Williams
Things As They Are: or The Adventures of Caleb Williams
William Godwin
R
Verdant
Verdant
TWOONY.
R
Last Day
Last Day
Richard Sears
R
Honour Guard
Honour Guard
Dan Abnett
R
The Rise and Fall of Khan Noonien Singh, Volume One
The Rise and Fall of Khan Noonien Singh, Volume One
Greg Cox
R
WW3 1947: BOOK 1 OF THE WORLD WAR III SERIES
WW3 1947: BOOK 1 OF THE WORLD WAR III SERIES
Max Lamirande
R
Angles of Attack
Angles of Attack
Marko Kloos
R
All Our Yesterdays
All Our Yesterdays
Jean Lisette Aroeste
R
The Avenger
The Avenger
P. C. Cast
R
Hero’s Gambit
Hero’s Gambit
Fred Hughes
R
Dark Seed
Dark Seed
Simon West-Bulford
R
The Revolution from Rosinante
The Revolution from Rosinante
Alexis A. Gilliland
R
Not Less Than Gods
Not Less Than Gods
Kage Baker
R
The People of the Moon
The People of the Moon
Tremlett Carter
R
Pindharee
Pindharee
Joel Richards
R
The Kalevide
The Kalevide
Lou Goble
R
Bad to the Bone
Bad to the Bone
Jeri Smith-Ready
R
Police Your Planet
Police Your Planet
Erik Van Lhin
R
Blood Siege
Blood Siege
G. Harry Stine
R
The Eternal Mercenary
The Eternal Mercenary
Barry Sadler
R
The Architects of Hyperspace
The Architects of Hyperspace
Thomas R. McDonough
R
Lost Civilization
Lost Civilization
John Walker
R
The Pirates of the Sky: A Tale of Modern Adventure
The Pirates of the Sky: A Tale of Modern Adventure
Stephen Gaillard
R
Extreme Measures
Extreme Measures
Michael Palmer
R
The Grail of Hearts
The Grail of Hearts
Susan Shwartz
R
The Pure Cold Light
The Pure Cold Light
Gregory Frost
R
After The Fall Was Over
After The Fall Was Over
W Clark Boutwell;W. Clark Boutwell
R