R rated sci-fi books

5467 books

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

Dark Passage
Dark Passage
Junius Podrug
R
Strike of the Sweepers
Strike of the Sweepers
Tyler Whitesides
R
The Rebellion
The Rebellion
JC Andrijeski
R
Generations
Generations
J. M. Dillard
R
Raggedy Ann in the Deep Deep Woods
Raggedy Ann in the Deep Deep Woods
Johnny Gruelle
R
Greta and the Lost Army
Greta and the Lost Army
Chloe Jacobs
R
Distraction
Distraction
Bruce Sterling
R
Phyllis Wong and the Waking of the Wizard
Phyllis Wong and the Waking of the Wizard
Geoffrey McSkimming
R
Mindblast
Mindblast
Diane Duane; Peter Morwood
R
Civil War: The Junior Novel
Civil War: The Junior Novel
Chris Wyatt
R
Railroad Rising: The Black Powder Rebellion
Railroad Rising: The Black Powder Rebellion
J. P. Wagner
R
The Double Axe: A Romance of Ancient Crete
The Double Axe: A Romance of Ancient Crete
Audrey Haggard
R
Hell Phone
Hell Phone
William Sleator
R
The Turf-Cutter's Donkey: An Irish Story of Mystery and Adventure
The Turf-Cutter's Donkey: An Irish Story of Mystery and Adventure
Patricia Lynch
R
The Lastling
The Lastling
Philip Gross
R
Agent of Chaos
Agent of Chaos
Norman Spinrad
R
Chain of Attack
Chain of Attack
Gene DeWeese
R
The Final Nexus
The Final Nexus
Gene DeWeese
R
Time for Yesterday
Time for Yesterday
A. C. Crispin
R
The Pandora Principle
The Pandora Principle
Carolyn Clowes
R
Into the Unseen
Into the Unseen
G. H. Lusty
R
Brothers at War
Brothers at War
Margaret Whitman Blair
R
Darkness Falls
Darkness Falls
Les Martin
R
Windows on a Lost World
Windows on a Lost World
V. E. Mitchell
R
House of Spies: Danger in Civil War Washington
House of Spies: Danger in Civil War Washington
Margaret Whitman Blair
R
Ever the Brave
Ever the Brave
Erin Summerill
R
Smoke and Mirrors
Smoke and Mirrors
Rosemary Edghill
R
Through the Andes
Through the Andes
A. Hyatt Verrill
R
Battle with the Wither
Battle with the Wither
Danica Davidson
R
The Big Lifters
The Big Lifters
Dean Ing
R