R rated sci-fi books

5195 books

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

Roth
Roth
Anna Hackett
R
The Plant That Ate Dirty Socks Goes Hollywood
The Plant That Ate Dirty Socks Goes Hollywood
Nancy McArthur
R
The Highlander's Vow
The Highlander's Vow
Barbara Longley
R
The First Heretic
The First Heretic
Aaron Dembski-Bowden
R
Fortress Earth
Fortress Earth
Vaughn Heppner
R
The Final Battle
The Final Battle
Stuart Daly
R
The Salt War
The Salt War
Joe Nobody
R
The Shadow Queen
The Shadow Queen
Anne Bishop
R
The Return of the Goddess: A Divine Comedy
The Return of the Goddess: A Divine Comedy
Elizabeth Cunningham
R
The Lost Patrol
The Lost Patrol
Vaughn Heppner
R
The Outskirter's Secret
The Outskirter's Secret
Rosemary Kirstein
R
Memory in Death
Memory in Death
J. D. Robb
R
House of Chains
House of Chains
Steven Erikson
R
The Griefer's Revenge
The Griefer's Revenge
Winter Morgan
R
The Bookkeeper
The Bookkeeper
Richard Ulrich
R
Ghost Song
Ghost Song
Susan Price
R
Maria Looney and the Cosmic Circus
Maria Looney and the Cosmic Circus
Jerome Beatty, Jr.
R
Nyphron Rising
Nyphron Rising
Michael J. Sullivan
R
Hollywood Hellmouth
Hollywood Hellmouth
Armand Rosamilia; Jack Wallen; Brent Abell; Jay Wilburn
R
The Narrow Path to War
The Narrow Path to War
D. L. Frizzell
R
One Is the Sun
One Is the Sun
Patricia Nell Warren
R
Invasion
Invasion
Julie Elizabeth Powell
R
Dead of Winter
Dead of Winter
Kresley Cole
R
A Genuine Monster
A Genuine Monster
David Zielinski
R
The Shadow Within
The Shadow Within
Karen Hancock
R
Coz
Coz
Mary Pjerrou
R
Flight of the Mariner
Flight of the Mariner
Paul Ware
R
Strike of the Sweepers
Strike of the Sweepers
Tyler Whitesides
R
Hide and Sidhe
Hide and Sidhe
J. E. Bruce
R
Kill All Angels
Kill All Angels
Robert Brockway
R