R rated sci-fi books

5467 books

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

Pillar of Night
Pillar of Night
Robert E. Vardeman
R
Uncle Terrible: More Adventures of Anatole
Uncle Terrible: More Adventures of Anatole
Nancy Willard
R
Showdown
Showdown
Ian Slater
R
Beings
Beings
Ilana Masad
R
Master of Lies
Master of Lies
Graham Masterton
R
Sci Fi
Sci Fi
William Marshall
R
A Darker Geometry
A Darker Geometry
Mark O. Martin; Gregory Benford
R
An Ill Fate Marshalling
An Ill Fate Marshalling
Glen Cook
R
Foundation and Chaos
Foundation and Chaos
Greg Bear
R
Bloodsport
Bloodsport
William R. Burkett, Jr.
R
Cythera
Cythera
Richard Calder
R
Halfway Human
Halfway Human
Carolyn Ives Gilman
R
Newton's Cannon
Newton's Cannon
J. Gregory Keyes
R
An Exchange of Hostages
An Exchange of Hostages
Susan R. Matthews
R
Melome
Melome
E. C. Tubb
R
Between the Rivers
Between the Rivers
Harry Turtledove
R
Kissing the Beehive
Kissing the Beehive
Jonathan Carroll
R
The Silent
The Silent
Jack Dann
R
Portal
Portal
Rob Swigart
R
Claiming More
Claiming More
Brandy Walker
R
Southshore
Southshore
Sheri S. Tepper
R
Jinian Footseer
Jinian Footseer
Sheri S. Tepper
R
The Downfall Matrix
The Downfall Matrix
Charles Ingrid
R
The Last of the Renshai
The Last of the Renshai
Mickey Zucker Reichert
R
Fire Get
Fire Get
Cheryl J. Franklin
R
Blood Lines
Blood Lines
William R. Burkett, Jr.
R
Down on the Farm
Down on the Farm
John Stchur
R
1945
1945
Newt Gingrich; William R. Forstchen
R
The Cassini Division
The Cassini Division
Ken MacLeod
R
Accidental Creatures
Accidental Creatures
Anne Harris
R