R rated sci-fi books

5467 books

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

Stepfather Bank
Stepfather Bank
D. C. Poyer
R
The Twilight Streets
The Twilight Streets
Gary Russell
R
Signs and Portents
Signs and Portents
Al Hine
R
Cybernetrix
Cybernetrix
Carlton Mellick, III
R
Yours Till Forever
Yours Till Forever
David Gifaldi
R
Mind Over Ship
Mind Over Ship
David Marusek
R
Blackest Ocean
Blackest Ocean
J.N. Chaney
R
The Ultimate Jungle
The Ultimate Jungle
Michael G. Coney
R
The Hero
The Hero
Michael Z. Williamson; John Ringo
R
Prisoner of the Lagon
Prisoner of the Lagon
Kaoru Kurimoto
R
The Lost Choice: A Legend of Personal Discovery
The Lost Choice: A Legend of Personal Discovery
Andy Andrews
R
The Ultimate Bike Path
The Ultimate Bike Path
Mike Sirota
R
The Crimson Hour
The Crimson Hour
Julie Tetel Andresen
R
Devotion of a Wolf (Viking Wolves Book 3)
Devotion of a Wolf (Viking Wolves Book 3)
C. J. Ravenna
R
Return to Argopoli
Return to Argopoli
Spyridon Moshonas
R
Freeware
Freeware
Rudy Rucker
R
Anything's Possible
Anything's Possible
Sally Willmot
R
Blood Red Angel
Blood Red Angel
Adrian Cole
R
Double Eagle
Double Eagle
Dan Abnett
R
Life
Life
Gwyneth Jones
R
Strange Cargo
Strange Cargo
Jeffrey E. Barlough
R
Viator
Viator
Lucius Shepard
R
Bella Balistica and the Temple of Tikal
Bella Balistica and the Temple of Tikal
Adam Guillain
R
The Defenders
The Defenders
Bill Baldwin
R
Dark Twilight
Dark Twilight
Joseph A. Citro
R
The Delivery
The Delivery
Gregg Hurwitz
R
Songs of the Dancing Gods
Songs of the Dancing Gods
Jack L. Chalker
R
A Maze of Death
A Maze of Death
Philip K. Dick
R
Left of the Right World
Left of the Right World
D. B. Clark
R
The Hot-Wired Dodo
The Hot-Wired Dodo
Jack L. Chalker
R