R rated sci-fi books

5467 books

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

Lady in Gil
Lady in Gil
Rebecca Bradley
R
Impakto
Impakto
Richard Calder
R
Cosmonaut Keep
Cosmonaut Keep
Ken MacLeod
R
Talisker
Talisker
Miller Lau
R
The Standing Dead
The Standing Dead
Ricardo Pinto
R
Saucer Wisdom
Saucer Wisdom
Rudy Rucker
R
Death Mask of Pancho Villa
Death Mask of Pancho Villa
Carol Gaskin; George Guthridge
R
Noontide Night
Noontide Night
Andrew Burt
R
Dance of Knives
Dance of Knives
Donna McMahon
R
Under the City of Angels
Under the City of Angels
Jerry Earl Brown
R
Planet Plague
Planet Plague
John Whitman
R
The Awakening
The Awakening
Donna Boyd
R
A Winter Haunting
A Winter Haunting
Dan Simmons
R
Cybele, with Bluebonnets
Cybele, with Bluebonnets
Charles L. Harness
R
Krispos of Videssos
Krispos of Videssos
Harry Turtledove
R
Land of Always-Night
Land of Always-Night
Lester Dent; Ryerson Johnson
R
The Case of the Vanishing Spaceship
The Case of the Vanishing Spaceship
Jane Werner Watson
R
The Haunting of Jessop Rise
The Haunting of Jessop Rise
Philip Caveney
R
Bill, the Galactic Hero on the Planet of Ten Thousand Bars
Bill, the Galactic Hero on the Planet of Ten Thousand Bars
Harry Harrison; David Bischoff
R
The Chronoliths
The Chronoliths
Robert Charles Wilson
R
The Free Lunch
The Free Lunch
Spider Robinson
R
The Deep Field
The Deep Field
James Bradley
R
The Outcast
The Outcast
Patricia Bernard
R
Straight Silver
Straight Silver
Dan Abnett
R
Doom Star Number Two
Doom Star Number Two
Richard S. Meyers
R
The Dalek Invasion of Earth
The Dalek Invasion of Earth
Terrance Dicks
R
Chasm
Chasm
Stephen Laws
R
redRobe
redRobe
Jon Courtenay Grimwood
R
Dykstra's War
Dykstra's War
Jeffery D. Kooistra
R
Witch Hunter
Witch Hunter
Tony Richards
R