R rated sci-fi books

5467 books

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

Dark Ages
Dark Ages
John Pritchard
R
Citizen Phaid
Citizen Phaid
Mick Farren
R
The Long Orbit
The Long Orbit
Mick Farren
R
Ghazghkull Thraka: Warlord of Warlords: Warhammer 40,000
Ghazghkull Thraka: Warlord of Warlords: Warhammer 40,000
Denny Flowers
R
The Neural Atrocity
The Neural Atrocity
Mick Farren
R
Bright Messengers
Bright Messengers
Gentry Lee
R
Hearts of Obsidian TENDER
Hearts of Obsidian TENDER
Lyra Starling
R
The Exile Kiss
The Exile Kiss
George Alec Effinger
R
Clash by Night
Clash by Night
Chet Williamson
R
Psychosphere
Psychosphere
Brian Lumley
R
Vector One: The Tree of Life
Vector One: The Tree of Life
Adam C. France
R
The Children Star
The Children Star
Joan Slonczewski
R
Greatest Hits (Herald Classics)
Greatest Hits (Herald Classics)
Harlan Ellison
R
Reward for Retief
Reward for Retief
Keith Laumer
R
Gaia's Demise
Gaia's Demise
James Axler
R
The History of Our World Beyond the Wave
The History of Our World Beyond the Wave
R. E. Klein
R
The Boar
The Boar
Joe R. Lansdale
R
The Fog
The Fog
James Herbert
R
Back to the Time Trap
Back to the Time Trap
Keith Laumer
R
Second Nature
Second Nature
Alice Hoffman
R
Hunter's Moon
Hunter's Moon
Garry Kilworth
R
Angel
Angel
Garry Kilworth
R
Necroscope: The Lost Years: Volume I
Necroscope: The Lost Years: Volume I
Brian Lumley
R
The Dark Age
The Dark Age
J.N. Chaney
R
Starbound
Starbound
Adrian Blue
R
Uptime, Downtime
Uptime, Downtime
John Peel
R
Starship & Haiku
Starship & Haiku
S. P. Somtow
R
The Yngling in Yamato
The Yngling in Yamato
John Dalmas
R
The Wind After Time
The Wind After Time
Chris Bunch
R
Top Dog
Top Dog
Jerry Jay Carroll
R