Adult 18+ sci-fi books

31474 books

A Hundred Doors
A Hundred Doors
Tom La Farge
G
The Ordinary Princess
The Ordinary Princess
M. M. Kaye
G
Dark Is a Colour
Dark Is a Colour
Fay S. Lapka
PG-13
A Year and a Day
A Year and a Day
Monica Furlong
PG-13
Juniper
Juniper
Monica Furlong
G
Defender
Defender
C. J. Cherryh
PG-13
Broken Sky: Part 9
Broken Sky: Part 9
Chris Wooding
R
The Unremembered Empire
The Unremembered Empire
Dan Abnett
R
Feeding Frenzy
Feeding Frenzy
Michael P. Spradlin
PG-13
Mutation
Mutation
Roland Smith
PG-13
Malleus
Malleus
Dan Abnett
R
Bolo Brigade
Bolo Brigade
William H. Keith, Jr.
R
The Silver Curlew
The Silver Curlew
Eleanor Farjeon
PG-13
Alien Assassin
Alien Assassin
T. Jackson King
R
Scarface
Scarface
Andre Norton
PG
Leviathan
Leviathan
Jack Campbell
R
Fortune
Fortune
Aurelia T. Evans
PG-13
In Black
In Black
Robert Essig
PG-13
Shadow in the Sea
Shadow in the Sea
Sheila A. Nielson
PG-13
Begun by Time
Begun by Time
Morgan O'Neill
PG-13
Warrior's Heart
Warrior's Heart
Laurie London
PG-13
The Duality Bridge
The Duality Bridge
Susan Kaye Quinn
PG-13
The Span of Empire
The Span of Empire
Eric Flint; David Carrico
PG-13
Black Ice Burning
Black Ice Burning
A. R. Kahler
PG-13
May Bird Among the Stars
May Bird Among the Stars
Jodi Lynn Anderson
PG-13
Moonstorm
Moonstorm
Kim Wilkins
PG-13
Master of Dragons
Master of Dragons
Angela Knight
PG
Limits of Power
Limits of Power
Elizabeth Moon
R
Initiate's Trial
Initiate's Trial
Janny Wurts
PG-13
Callahan's Lady
Callahan's Lady
Spider Robinson
X