R rated sci-fi books

5467 books

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

Keepers of the River
Keepers of the River
Keith Schulz
R
Night Terrors
Night Terrors
Drew Williams
R
T2: Rising Storm
T2: Rising Storm
S. M. Stirling
R
Salamander
Salamander
Thomas Wharton
R
Night of the Beast
Night of the Beast
Harry Shannon
R
The Year of the Hangman
The Year of the Hangman
Gary L. Blackwood
R
Ace in the Hole
Ace in the Hole
Stephen Leigh; Walter Jon Williams; Melinda M. Snodgrass; Victor Milán; Walton Simons
R
Invasion from 2500
Invasion from 2500
Norman Edwards
R
Flying to Pieces
Flying to Pieces
Dean Ing
R
The Stars Are Legion
The Stars Are Legion
Kameron Hurley
R
There Is No Darkness
There Is No Darkness
Joe Haldeman; Jack C. Haldeman, II
R
Portal to Nova Roma: The Rhine
Portal to Nova Roma: The Rhine
J.R. Mathews
R
Elementum
Elementum
Toni L. Meilleur
R
Our Memory Like Dust
Our Memory Like Dust
Gavin Chait
R
Earth's Secret Corridor
Earth's Secret Corridor
Gregory Strausbaugh
R
Zinnia and the Bees
Zinnia and the Bees
Danielle Davis
R
Merlin
Merlin
Jane Yolen
R
The Opposite of Life
The Opposite of Life
Narrelle M. Harris
R
Apostle of Camelot
Apostle of Camelot
Andrew Mather
R
The Chronocide Mission
The Chronocide Mission
Lloyd Biggle, Jr.
R
Akira, Vol. 1
Akira, Vol. 1
Katsuhiro Otomo
R
The Folks
The Folks
Ray Garton
R
Alien Assassin
Alien Assassin
T. Jackson King
R
Lineage
Lineage
Skyla Dawn Cameron
R
The Third Pandemic
The Third Pandemic
Pierre Ouellette
R
Conventions of War
Conventions of War
Walter Jon Williams
R
Leviathan
Leviathan
Jack Campbell
R
The Raider
The Raider
Walter Jon Williams
R
Inevitable
Inevitable
Robert Reed
R
The Sagittarius Command
The Sagittarius Command
R. M. Meluch
R