R rated sci-fi books

5467 books

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

Ghost Song
Ghost Song
Susan Price
R
Owl in Love
Owl in Love
Patrice Kindl
R
In Hot Blood
In Hot Blood
Petru Popescu
R
The Ancient One
The Ancient One
T. A. Barron
R
Jailbird
Jailbird
Kurt Vonnegut, Jr.
R
Nyphron Rising
Nyphron Rising
Michael J. Sullivan
R
In a Dangerous Orbit
In a Dangerous Orbit
Anna Hackett
R
Bioshock: Rapture
Bioshock: Rapture
John Shirley
R
Warrior Wolf Women of the Wasteland
Warrior Wolf Women of the Wasteland
Carlton Mellick, III
R
Fields of Fire
Fields of Fire
Marko Kloos
R
Jackal Bird
Jackal Bird
Michael Barley
R
Galax-Arena
Galax-Arena
Gillian Rubinstein
R
Prospero Burns
Prospero Burns
Dan Abnett
R
The Inner Side of the Wind, or the Novel of Hero and Leander
The Inner Side of the Wind, or the Novel of Hero and Leander
Milorad Pavić
R
After the End: 3-Book Post-Apocalyptic Thriller Boxset
After the End: 3-Book Post-Apocalyptic Thriller Boxset
Grace Hamilton
R
Mordred's Curse
Mordred's Curse
Ian McDowell
R
Elijah
Elijah
Jacquelyn Frank
R
The Orphan's Tent
The Orphan's Tent
Tom De Haven
R
The Final Death
The Final Death
Richard Sapir; Warren Murphy
R
Time Trial
Time Trial
Warren Murphy
R
Encounter Group
Encounter Group
Warren Murphy
R
Blood Lust
Blood Lust
Will Murray
R
Alpha Centauri
Alpha Centauri
William Barton; Michael Capobianco
R
Landslayer's Law
Landslayer's Law
Tom Deitz
R
The Still
The Still
David Feintuch
R
'48
'48
James Herbert
R
Only Child
Only Child
Jesse Osburn
R
The Stars Dispose
The Stars Dispose
Michaela Roessner
R
Thessalonica
Thessalonica
Harry Turtledove
R
MEK.
MEK.
JENNIFER JULIE. MILLER
R