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 Imaginary Monkey
The Imaginary Monkey
Sean French
R
War Dogs of the Golden Horde
War Dogs of the Golden Horde
Ray W. Murill
R
Fire in the Blood
Fire in the Blood
P. N. Elrod
R
Subspace Encounter
Subspace Encounter
Edward E. Smith; Lloyd Arthur Eshbach
R
Kiki's Delivery Service
Kiki's Delivery Service
Eiko Kadono
R
Infinity Beach
Infinity Beach
Jack McDevitt
R
The War of the Saints
The War of the Saints
Jorge Amado
R
The Wonder Engine
The Wonder Engine
T. Kingfisher
R
Bolo Rising
Bolo Rising
William H. Keith, Jr.
R
Necroscope: Avengers
Necroscope: Avengers
Brian Lumley
R
Cadre One
Cadre One
Robert O'Riordan
R
Banished Sons Of Poseidon
Banished Sons Of Poseidon
Andrew J. Peters
R
The Privateer
The Privateer
James Doohan; S. M. Stirling
R
March or Die
March or Die
William H. Keith, Jr.; Andrew Keith
R
Mirrored Heavens
Mirrored Heavens
Rebecca Roanhorse
R
Garro Shield of Lies
Garro Shield of Lies
James Swallow
R
Realtime
Realtime
Mark W. Tiedemann
R
Isard's Revenge
Isard's Revenge
Michael A. Stackpole
R
The Hand of Doume
The Hand of Doume
Elizabeth Pewsey
R
The Price of Glory
The Price of Glory
William H. Keith, Jr.
R
Legacy of Prometheus
Legacy of Prometheus
John Maddox Roberts; Eric Kotani
R
Decision at Thunder Rift
Decision at Thunder Rift
William H. Keith, Jr.
R
Bouncing Off the Moon
Bouncing Off the Moon
David Gerrold
R
Complicated
Complicated
Colin Alexander
R
Widow's Walk
Widow's Walk
Steve Beai
R
A Witness to Life
A Witness to Life
Terence M. Green
R
Dark Age (1 of 3) [Dramatized Adaptation]: Red Rising 5
Dark Age (1 of 3) [Dramatized Adaptation]: Red Rising 5
Pierce Brown
R
Rift Magus Reborn 3: Rise of the Arcane Aristocrat
Rift Magus Reborn 3: Rise of the Arcane Aristocrat
Sam Winton
R
Black on Black
Black on Black
JC Andrijeski
R
Lucky's Stars
Lucky's Stars
Tripp Robbins
R