R rated sci-fi books

5467 books

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

Operation Luna
Operation Luna
Poul Anderson
R
Time
Time
Stephen Baxter
R
Blood Kin
Blood Kin
Ardath Mayhar
R
Blood Warrior
Blood Warrior
Carrie Lofty
R
I Am One of You Forever
I Am One of You Forever
Fred Chappell
R
Anachronisms
Anachronisms
Christopher Hinz
R
The Stone Dogs
The Stone Dogs
S. M. Stirling
R
The Battle for the Brightstone
The Battle for the Brightstone
Paul B. Thompson
R
Anvil Gate
Anvil Gate
Karen Traviss
R
Space Raiders and the Planet of Doom
Space Raiders and the Planet of Doom
Stephen Mooser
R
The Case of the Heavenly Host
The Case of the Heavenly Host
Kyle Cicero
R
Brilliance of the Moon
Brilliance of the Moon
Lian Hearn
R
The Magic Coin
The Magic Coin
Ruth Chew
R
Warsinger
Warsinger
James Osiris Osiris Baldwin
R
Evil Ascending
Evil Ascending
Michael A. Stackpole
R
Neutron Two Is Critical
Neutron Two Is Critical
Lawrence Dunning
R
The Ambush: A Hard Military Space Fleet Thriller
The Ambush: A Hard Military Space Fleet Thriller
K.R. Vance
R
Falling Shadows: Falling Shadows Book 1:
Falling Shadows: Falling Shadows Book 1:
Justin Bell
R
Alien Invasion from Hollyweird
Alien Invasion from Hollyweird
John Peel
R
Amy
Amy
Samantha Lee
R
Uncivil Wars
Uncivil Wars
Wendi Kelly; Deborah Dorchak
R
McGillicuddy the Bookseller: A Bibliofantasy
McGillicuddy the Bookseller: A Bibliofantasy
H. C. Tidian
R
Nebula Vigilante
Nebula Vigilante
T. Jackson King
R
Shadow Walkers
Shadow Walkers
Nina Romberg
R
Terms of Enlistment
Terms of Enlistment
Marko Kloos
R
12 Monkeys
12 Monkeys
Elizabeth Hand
R
Shadows
Shadows
John Saul
R
True to the Highlander
True to the Highlander
Barbara Longley
R
By Blood Alone
By Blood Alone
William C. Dietz
R
To Do or Die
To Do or Die
Mike Shepherd
R