R rated sci-fi books

5467 books

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

Scapescope
Scapescope
John E. Stith
R
Spacemaster 1
Spacemaster 1
John Ball
R
My Soul to Keep
My Soul to Keep
Jean M. Favors
R
Rugby Rebel
Rugby Rebel
Gerard Siggins
R
Romulus Buckle & the Engines of War
Romulus Buckle & the Engines of War
Richard Ellis Preston, Jr.
R
Crown of Silence
Crown of Silence
Storm Constantine
R
Swarm and Steel
Swarm and Steel
Michael R. Fletcher
R
Children of Hope
Children of Hope
David Feintuch
R
Ragnarok
Ragnarok
D. G. Compton; John Gribbin
R
Leviathan : An Epic Space Opera/Alternate Universe/Alien Invasion Adventure
Leviathan : An Epic Space Opera/Alternate Universe/Alien Invasion Adventure
Sean Robins
R
The Precipice
The Precipice
Ben Bova
R
Schild's Ladder
Schild's Ladder
Greg Egan
R
Nomads of the Sky
Nomads of the Sky
William H. Keith, Jr.
R
Eloise
Eloise
E. C. Tubb
R
Angado
Angado
E. C. Tubb
R
The Thorn Boy
The Thorn Boy
Storm Constantine
R
Jade Darcy and the Affair of Honor
Jade Darcy and the Affair of Honor
Stephen Goldin; Mary Mason
R
Death Arms
Death Arms
K. W. Jeter
R
The Observers
The Observers
Damon Knight
R
Return of the Living Dead
Return of the Living Dead
John Russo
R
Slam
Slam
Lewis Shiner
R
The City of the Sun
The City of the Sun
Brian Stableford
R
Invasion of the Junkyard Hog
Invasion of the Junkyard Hog
Bill Doyle
R
Battle Earth II
Battle Earth II
Nick S. Thomas
R
The Paratwa
The Paratwa
Christopher Hinz
R
Optiman
Optiman
Brian Stableford
R
The Forever City
The Forever City
Richard A. Lupoff
R
Why Do Birds
Why Do Birds
Damon Knight
R
The Dragon, the Witch, and the Railroad
The Dragon, the Witch, and the Railroad
Elizabeth Ann Scarborough
R
The Last Days of the Edge of the World
The Last Days of the Edge of the World
Brian Stableford
R