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 Extinction Survival Series Box Set: Lost Valley, Satan's Gate, Cost of Survival & Warrior's Fate
The Extinction Survival Series Box Set: Lost Valley, Satan's Gate, Cost of Survival & Warrior's Fate
Walt Browning
R
Alien Inventor’s Mate
Alien Inventor’s Mate
Mina Carter
R
Brushfire (Expeditionary Force Book 11)
Brushfire (Expeditionary Force Book 11)
Craig Alanson
R
Dark Predator
Dark Predator
Christine Feehan
R
Accelerando
Accelerando
Charles Stross
R
Hammer and Anvil
Hammer and Anvil
James Swallow
R
How Atlas Dreamed
How Atlas Dreamed
Alissa Lace
R
Center Mass
Center Mass
Dan Willis
R
Beneath Khafre's Pyramid
Beneath Khafre's Pyramid
Chris Fox
R
Burning Chrome
Burning Chrome
William Gibson
R
Pariah: Ravenor vs Eisenhorn
Pariah: Ravenor vs Eisenhorn
Dan Abnett
R
The Harp of the Grey Rose
The Harp of the Grey Rose
Charles de Lint
R
CyberLife
CyberLife
W. H. Buxton
R
Hearts of Obsidian CLASH
Hearts of Obsidian CLASH
Lyra Starling
R
Paladin 2: Battleborn
Paladin 2: Battleborn
Kevin McLaughlin
R
The Island of Doctor Moreau
The Island of Doctor Moreau
H. G. Wells
R
The Harvest
The Harvest
M a Church
R
TROG 1970
TROG 1970
Brett Gilliland
R
Hell Road Warriors
Hell Road Warriors
Chuck Rogers
R
The Age of Miracles
The Age of Miracles
Karen Thompson Walker
R
The Complicated Love Life of Ivil Antagonist, Empress of Mars
The Complicated Love Life of Ivil Antagonist, Empress of Mars
RavensDagger
R
The Crown of the Usurper
The Crown of the Usurper
Gav Thorpe
R
Stepwater
Stepwater
L. Warren Douglas
R
Surviving the Silence: An EMP Post Apocalypse Prepper Survival Thriller Boxset
Surviving the Silence: An EMP Post Apocalypse Prepper Survival Thriller Boxset
William Stone
R
Fear to Tread
Fear to Tread
James Swallow
R
Path of the Outcast
Path of the Outcast
Gav Thorpe
R
Frank Herbert's Dune Saga 6-Book Boxed Set: Dune, Dune Messiah, Children of Dune, God Emperor of Dune, Heretics of Dune, andChapterhouse: Dune
Frank Herbert's Dune Saga 6-Book Boxed Set: Dune, Dune Messiah, Children of Dune, God Emperor of Dune, Heretics of Dune, andChapterhouse: Dune
Frank Herbert
R
Vazkor, Son of Vazkor
Vazkor, Son of Vazkor
Tanith Lee
R
Shadow Game
Shadow Game
Christine Feehan
R
Blood and Bone
Blood and Bone
Ian C. Esslemont
R