R rated sci-fi books

5467 books

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

Shards of Earth
Shards of Earth
Adrian Tchaikovsky
R
The Lost Zone: The Explosive Third Installment in the Addictive MM Romantic Thriller Series
The Lost Zone: The Explosive Third Installment in the Addictive MM Romantic Thriller Series
Xanthe Walter
R
Fisherman's Hope
Fisherman's Hope
David Feintuch
R
Adverse Effects
Adverse Effects
Alicia Nordwell
R
Tempting Auzed
Tempting Auzed
Victoria Aveline
R
Defiance of the Fall 7
Defiance of the Fall 7
TheFirstDefier
R
Maybe a Fox
Maybe a Fox
Kathi Appelt; Alison Mcghee
R
Basil and the Pygmy Cats
Basil and the Pygmy Cats
Eve Titus
R
Defiance of the Fall 10
Defiance of the Fall 10
TheFirstDefier
R
Defiance of the Fall 11
Defiance of the Fall 11
TheFirstDefier
R
Iriya the Berserker
Iriya the Berserker
Hideyuki Kikuchi
R
Spares
Spares
Michael Marshall Smith
R
Defiance of the Fall 12
Defiance of the Fall 12
TheFirstDefier
R
Defiance of the Fall 14
Defiance of the Fall 14
Jf Brink;Thefirstdefier
R
Storm Runner
Storm Runner
Tara K. Harper
R
The Champions of 1941: War Footing
The Champions of 1941: War Footing
Kenneth Tam
R
Romance of Paradise
Romance of Paradise
Edmund S. Gunn
R
Young Guns
Young Guns
J. N. Chaney;Nicholas Sansbury
R
Boundary Born
Boundary Born
Melissa F. Olson
R
The Life of Sigmar
The Life of Sigmar
Gav Thorpe; Matthew Ralphs
R
Into The Uncertain
Into The Uncertain
James Rosone;Miranda Watson
R
The Supreme Rulers
The Supreme Rulers
J. A. Houghton
R
Extinction
Extinction
Douglas Preston
R
America Falls, Collection 3: Books 11-13
America Falls, Collection 3: Books 11-13
Scott Medbury
R
Unthinkable
Unthinkable
Nina Croft
R
Archangel
Archangel
Rick Partlow
R
Corvak's Challenge
Corvak's Challenge
Ruby Dixon
R
Warriors of the Light
Warriors of the Light
Larry Ivkovich
R
Penitent
Penitent
Dan Abnett
R
Fate of Perfection
Fate of Perfection
K. F. Breene
R