R rated sci-fi books

5467 books

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

Virtual War
Virtual War
Gloria Skurzynski
R
Starship Troopers
Starship Troopers
Robert A. Heinlein
R
Return
Return
Al Sarrantonio
R
Dominion
Dominion
Bentley Little
R
Leaning Towards Infinity
Leaning Towards Infinity
Sue Woolfe
R
Strange Deliverance
Strange Deliverance
Mary Brown
R
Charon's Ark
Charon's Ark
Rick Gauger
R
Beasts in Velvet
Beasts in Velvet
Jack Yeovil
R
Dark Agent
Dark Agent
Neal Asher
R
Soldier of Fortune
Soldier of Fortune
Barry Sadler
R
Crimson Climb
Crimson Climb
E.K. Johnston
R
Marked Mate
Marked Mate
Grace Goodwin
R
Phases of Gravity
Phases of Gravity
Dan Simmons
R
The Windrider
The Windrider
Stephanie T. Hoppe
R
Sandworms of Dune
Sandworms of Dune
Brian Herbert;Kevin J Anderson
R
The Summit
The Summit
Edward Myers
R
Generation X
Generation X
Elliot S! Maggin; Scott Lobdell
R
Halo: The Fall of Reach
Halo: The Fall of Reach
Eric Nylund
R
Dagger's Edge
Dagger's Edge
Anne Logston
R
Outpassage
Outpassage
Janet Morris; Chris Morris
R
Prophecy of Darkness
Prophecy of Darkness
Stella Howard
R
Into the Hinterlands
Into the Hinterlands
David Drake; John Lambshead
R
Legacy of the Ancients
Legacy of the Ancients
Ron Sarti
R
The Fires of Coventry
The Fires of Coventry
Rick Shelley
R
Unto the Beast
Unto the Beast
Richard Monaco
R
Target Earth
Target Earth
Steve Perry
R
Voyage to a Forgotten Sun
Voyage to a Forgotten Sun
Donald J. Pfeil
R
The Secret of Barnabas Collins
The Secret of Barnabas Collins
Marilyn Ross
R
Wild Zone
Wild Zone
John Schettler
R
The Demon of Barnabas Collins
The Demon of Barnabas Collins
Marilyn Ross
R