R rated sci-fi books

5467 books

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

Coyote
Coyote
Peter Gadol
R
Born to Exile
Born to Exile
Phyllis Eisenstein
R
Valley of Lights
Valley of Lights
Stephen Gallagher
R
Steps to the High Garden
Steps to the High Garden
Colin Duckworth
R
Lifeblood
Lifeblood
Lee Duigon
R
Eternal Kiss
Eternal Kiss
Anastasia Dubois
R
The Cunningham Equations
The Cunningham Equations
G. C. Edmondson; C. M. Kotlan
R
The Riders of the Sidhe
The Riders of the Sidhe
Kenneth C. Flint
R
Slime
Slime
John Tigges
R
On the Third Day
On the Third Day
Michael Delahaye
R
The Prey
The Prey
Ed Naha
R
Anarchist Farm
Anarchist Farm
Jane Doe
R
Seeds of Yesterday
Seeds of Yesterday
V. C. Andrews
R
The Ram of Sweetriver
The Ram of Sweetriver
Colin Dann
R
The Gilded Cat
The Gilded Cat
Catherine Dexter
R
The Obsidian Oracle
The Obsidian Oracle
Troy Denning
R
Walker Between the Worlds
Walker Between the Worlds
Diane DesRochers
R
Merlin and Company
Merlin and Company
Alvaro Cunqueiro
R
Dancer of the Sixth
Dancer of the Sixth
Michelle Shirey Crean
R
The Druid's Gift
The Druid's Gift
Margaret J. Anderson
R
The Dark Abyss
The Dark Abyss
Bruce Coville
R
Tallarn: Ironclad
Tallarn: Ironclad
John French
R
Fate
Fate
Mary Corran
R
The Bridge in the Clouds
The Bridge in the Clouds
William Corlett
R
Out for Blood
Out for Blood
John Peyton Cooke
R
Beyond the Moons
Beyond the Moons
David Cook
R
Hermetech
Hermetech
Storm Constantine
R
The Mists of Time
The Mists of Time
Margaret J. Anderson
R
Growing Light
Growing Light
Martha Conley
R
The Hunt
The Hunt
Zoe Daniels
R