R rated sci-fi books

5467 books

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

A New Beginning
A New Beginning
Kevin Ryan
R
Poison Fruit
Poison Fruit
Jacqueline Carey
R
Dark Vengeance
Dark Vengeance
Diana G. Gallagher
R
Freehold
Freehold
Michael Z. Williamson
R
Hereticus
Hereticus
Dan Abnett
R
Judgment
Judgment
Will McDermott
R
Oath of Nerull
Oath of Nerull
T. H. Lain
R
The Stargate Conspiracy
The Stargate Conspiracy
Lynn Picknett; Clive Prince
R
Storm of Iron
Storm of Iron
Graham McNeill
R
The Belltower
The Belltower
Samantha Lee
R
The Claws of Chaos
The Claws of Chaos
Gav Thorpe
R
A Hive for the Honeybee
A Hive for the Honeybee
Soinbhe Lally
R
Eclipse
Eclipse
Dirk Strasser
R
Malleus
Malleus
Dan Abnett
R
Kill Team
Kill Team
Gav Thorpe
R
Midnight Bride
Midnight Bride
Susan Carroll
R
Resurrection
Resurrection
Arwen Elys Dayton
R
Soldiers
Soldiers
John Dalmas
R
Tenebrea's Hope
Tenebrea's Hope
Roxann Dawson; Daniel Graham
R
The Independent Command
The Independent Command
James Doohan; S. M. Stirling
R
The Puppet Master
The Puppet Master
John Dalmas
R
Conquerors' Legacy
Conquerors' Legacy
Timothy Zahn
R
The Spy Wore Shades
The Spy Wore Shades
Martha Freeman
R
The Wolf Man: Blood Moon Rising
The Wolf Man: Blood Moon Rising
Larry Mike Garmon
R
Attack from Atlantis
Attack from Atlantis
Lester del Rey
R
Growing Light
Growing Light
Marta Randall
R
Big Bang
Big Bang
Ron Goulart
R
The Prophecy (Brethren)
The Prophecy (Brethren)
Kendra Clark
R
Recce
Recce
Phillip Richards
R
The Lost Colony
The Lost Colony
Vaughn Heppner
R