R rated sci-fi books

5467 books

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

All Flesh Is Grass
All Flesh Is Grass
Clifford D. Simak
R
Warrior
Warrior
Donald E. McQuinn
R
Stars' End
Stars' End
Glen Cook
R
Tonguing the Zeitgeist
Tonguing the Zeitgeist
Lance Olsen
R
Act of God
Act of God
John Maddox Roberts; Yoji Kondo
R
Timelike Infinity
Timelike Infinity
Stephen Baxter
R
The Quiet Woman
The Quiet Woman
Christopher Priest
R
CV
CV
Damon Knight
R
What Wakes the Bells
What Wakes the Bells
Elle Tesch
R
Wizard or Witch?
Wizard or Witch?
Tony Abbott
R
Blind Justice
Blind Justice
S. N. Lewitt
R
The Sea's Furthest End
The Sea's Furthest End
Damien Broderick
R
This Is the Way the World Ends
This Is the Way the World Ends
James Morrow
R
The Catalyst
The Catalyst
Nicole Luiken
R
Terraplane
Terraplane
Jack Womack
R
Silent Thunder
Silent Thunder
Dean Ing
R
Summer of Night
Summer of Night
Dan Simmons
R
Summer of Love
Summer of Love
Lisa Mason
R
The Fire People
The Fire People
Ray Cummings
R
Steel Beach
Steel Beach
John Varley
R
Sacred Locomotive Flies
Sacred Locomotive Flies
Richard A. Lupoff
R
Shadowline
Shadowline
Glen Cook
R
Doomstalker
Doomstalker
Glen Cook
R
City on Fire
City on Fire
Walter Jon Williams
R
Silent Dances
Silent Dances
A. C. Crispin; Kathleen O'Malley
R
A Daughter of Liberty
A Daughter of Liberty
Chris Bunch; Allan Cole
R
Cyberweb
Cyberweb
Lisa Mason
R
Pestilence
Pestilence
Laura Thalassa
R
Lord Tedric
Lord Tedric
E. E. 'Doc' Smith
R
Crescent in the Sky
Crescent in the Sky
Donald Moffitt
R