R rated sci-fi books

5467 books

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

The Dark Ground
The Dark Ground
Gillian Cross
R
The Religion War
The Religion War
Scott Adams
R
Blood on Snow
Blood on Snow
Tim Bowler
R
A Time for War, a Time for Peace
A Time for War, a Time for Peace
Keith R. A. DeCandido
R
Earth Winter
Earth Winter
Richard Moran
R
The Corrupted
The Corrupted
Robert Earl
R
Siege Perilous
Siege Perilous
P. N. Elrod; Nigel Bennett
R
The Molliwumps
The Molliwumps
Cecil Maiden
R
Fortress Earth
Fortress Earth
Vaughn Heppner
R
Gulf Run
Gulf Run
David Sherman
R
Castle by the Sea
Castle by the Sea
Craig Etchison
R
Ethelwina; or, The House of Fitz-Auburne
Ethelwina; or, The House of Fitz-Auburne
T. J. Horsley Curties
R
The Usahar
The Usahar
Karen Anne Mitchell
R
The Seventh Sense
The Seventh Sense
Ray Green
R
Tour the Line
Tour the Line
Michael A. Sewell
R
Derby Doodle and the Red Leaf
Derby Doodle and the Red Leaf
Lisa J. Eliotte
R
The Crooked Old Trail
The Crooked Old Trail
Eveline Mears
R
The Secret Door to Atlantis
The Secret Door to Atlantis
Jackie Richards
R
Perihelion
Perihelion
William F. Wu
R
Magestorm
Magestorm
Jonathan Green
R
Freedom Vs. Equality: The Saga of No Man's Land
Freedom Vs. Equality: The Saga of No Man's Land
Riley W. Sanson, Jr.
R
Resurrection of the Ninth House
Resurrection of the Ninth House
Ronan Blaze
R
Unicorn Sisters
Unicorn Sisters
Marian Michelle Garms
R
Undying World
Undying World
Jeffrey Lord
R
The Intruders
The Intruders
Michael Marshall Smith
R
Curse of the Wulfen
Curse of the Wulfen
David Annandale
R
The Oak Clan
The Oak Clan
Jerrod Balzer
R
Ellie: The Lady of the Lake
Ellie: The Lady of the Lake
Jim Zimmer
R
Deny Thy Father: 2355-2357
Deny Thy Father: 2355-2357
Jeff Mariotte
R
Creatch Battler
Creatch Battler
Mark Crilley
R