R rated sci-fi books

5467 books

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

Shadows in the Water
Shadows in the Water
Kathryn Lasky
R
Creature
Creature
John Saul
R
Roadkill
Roadkill
Richard Sanford
R
The Ring of Truth
The Ring of Truth
David J. Lake
R
Stolen Souls
Stolen Souls
Jeffrey Sackett
R
Carnivores
Carnivores
Penelope Banka Kreps
R
Carmichael's Dog
Carmichael's Dog
R. M. Koster
R
If I Had One Wish...
If I Had One Wish...
Jackie French Koller
R
Campfire Story
Campfire Story
Robert Y. Kline
R
The Iowa Baseball Confederacy
The Iowa Baseball Confederacy
W. P. Kinsella
R
Re-Enter Fu Manchu
Re-Enter Fu Manchu
Sax Rohmer
R
Exploits
Exploits
Mike Resnick
R
The Hahnemann Sequela
The Hahnemann Sequela
Harold King
R
The Aldebaran Campaign
The Aldebaran Campaign
Kevin D. Randle; Robert Cornett
R
Long Voyage Back
Long Voyage Back
Luke Rhinehart
R
Looking Through Glass
Looking Through Glass
Mukul Kesavan
R
Soul Catcher
Soul Catcher
Colin Kersey
R
Godslayer
Godslayer
Mickey Zucker Reichert
R
Protector: A Sci-Fi Alien Warrior Romance
Protector: A Sci-Fi Alien Warrior Romance
Tana Stone
R
Janissaries: Clan and Crown
Janissaries: Clan and Crown
Roland J. Green; Jerry Pournelle
R
The Medusa Encounter
The Medusa Encounter
Paul Preuss
R
Galactic MI
Galactic MI
Kevin D. Randle
R
Blood Challenge
Blood Challenge
Eileen Wilks
R
Yamato II: The Way of the Warrior Part 1
Yamato II: The Way of the Warrior Part 1
Ken Kato
R
World Enough, and Time
World Enough, and Time
James Kahn
R
Out of a Forest Clearing
Out of a Forest Clearing
Randall Beth Platt
R
Amityville: The Evil Escapes
Amityville: The Evil Escapes
John G. Jones
R
The Haunted Phantom
The Haunted Phantom
Talis Jones
R
Dinosaur with an Attitude
Dinosaur with an Attitude
Hanna Johansen
R
Death and the Dogwalker
Death and the Dogwalker
Sheri S. Tepper
R