R rated sci-fi books

5467 books

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

Star Corps
Star Corps
Ian Douglas
R
Leaping to the Stars
Leaping to the Stars
David Gerrold
R
Going, Going, Gone
Going, Going, Gone
Jack Womack
R
A Pound of Prevention
A Pound of Prevention
James Mullaney
R
Marching Through Peachtree
Marching Through Peachtree
Harry Turtledove
R
Spaceland
Spaceland
Rudy Rucker
R
Things Not Seen
Things Not Seen
Andrew Clements
R
Onslaught
Onslaught
David Sherman
R
Warlord of Zendow
Warlord of Zendow
Richard La Plante
R
The Star Country
The Star Country
Michael Cassutt
R
The Memory of Fire
The Memory of Fire
George Foy
R
Beyond Humanity
Beyond Humanity
Justin Leiber
R
Bolo Strike
Bolo Strike
William H. Keith, Jr.
R
When the Devil Dances
When the Devil Dances
John Ringo
R
Wake of the Wraith
Wake of the Wraith
Michael Rittel
R
The Isle Beyond Time
The Isle Beyond Time
L. Warren Douglas
R
Shadow of Earth
Shadow of Earth
Phyllis Eisenstein
R
Shadow of the Storm
Shadow of the Storm
Kurt R. A. Giambastiani
R
The Bloody Eye
The Bloody Eye
T. H. Lain
R
Ten Years After
Ten Years After
Arthur Byron Cover
R
The Sundial
The Sundial
Shirley Jackson
R
The Black Road
The Black Road
Mel Odom
R
The Truth Hurts
The Truth Hurts
Leslie Goldman
R
The War with Earth
The War with Earth
Leo Frankowski; Dave Grossman
R
Tinker
Tinker
Wen Spencer
R
In Some Other Life
In Some Other Life
Jessica Brody
R
Zavant
Zavant
Gordon Rennie
R
Altered Carbon
Altered Carbon
Richard Morgan
R
When HARLIE Was One (Release 2.0)
When HARLIE Was One (Release 2.0)
David Gerrold
R
Dragons and Unicorns: A Natural History
Dragons and Unicorns: A Natural History
Paul A. Johnsgard; Karin Johnsgard
R