R rated sci-fi books

5467 books

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

Divine Endurance
Divine Endurance
Gwyneth Jones
R
Laughter in Space
Laughter in Space
Vargo Statten
R
The Acros Raiders
The Acros Raiders
Sara Tunder
R
The Ransom of Black Stealth One
The Ransom of Black Stealth One
Dean Ing
R
Invasion: Colorado
Invasion: Colorado
Vaughn Heppner
R
Double Jeopardy
Double Jeopardy
Aaron Allston
R
A Knight Among Knaves
A Knight Among Knaves
Robert N. Charrette
R
Bloodwinter
Bloodwinter
Tom Deitz
R
Thief of Souls
Thief of Souls
Neal Shusterman
R
Stealing the Elf-King's Roses
Stealing the Elf-King's Roses
Diane Duane
R
The Descent
The Descent
Jeff Long
R
The Crystal Warriors
The Crystal Warriors
William R. Forstchen; Greg Morrison
R
The Gathering Flame
The Gathering Flame
Debra Doyle; James D. Macdonald
R
Smart House
Smart House
Kate Wilhelm
R
The Rift
The Rift
Walter Jon Williams
R
Mutineer
Mutineer
Mike Shepherd
R
Against the Tide of Years
Against the Tide of Years
S. M. Stirling
R
Patriarch's Hope
Patriarch's Hope
David Feintuch
R
Ishmael
Ishmael
Daniel Quinn
R
The Abductors: Conspiracy
The Abductors: Conspiracy
Jonathan Frakes; Dean Wesley Smith
R
The Blasted Lands
The Blasted Lands
James A. Moore
R
Last Act
Last Act
Christopher Pike
R
D-99
D-99
H. B. Fyfe
R
Eclipsing Binaries
Eclipsing Binaries
Stephen Goldin; Edward E. Smith
R
Honor and Fidelity
Honor and Fidelity
Andrew Keith; William H. Keith, Jr.
R
Mad Moon of Dreams
Mad Moon of Dreams
Brian Lumley
R
Eden
Eden
Phillip Richards
R
Red Earth and Pouring Rain
Red Earth and Pouring Rain
Vikram Chandra
R
The Uncanny
The Uncanny
Andrew Klavan
R
The Walls of Air
The Walls of Air
Barbara Hambly
R