Adult 18+ sci-fi books

30978 books

Marooned
Marooned
P. J. Druce
PG-13
Halloween Jack and the Curse of Frost
Halloween Jack and the Curse of Frost
M. Todd Gallowglas
PG-13
Killer Kyanite
Killer Kyanite
Cindy Stark
PG-13
Take and Give
Take and Give
Amanda G. Stevens
PG-13
Supers: Ex Heroes 6
Supers: Ex Heroes 6
Jamie Hawke
PG-13
The Oak King & the Ash Queen
The Oak King & the Ash Queen
Ann Phillips
G
The Burden of Indigo
The Burden of Indigo
Gene O'Neill
R
Oryx and Crake
Oryx and Crake
Margaret Atwood
PG
Windborn
Windborn
Jennifer Lynn Alvarez
PG-13
The New Order
The New Order
Sean Fay Wolfe
PG-13
Rugby Warrior
Rugby Warrior
Gerard Siggins
R
Mortimer Revealed
Mortimer Revealed
Asphyxia
PG-13
Maggie Malone Makes a Splash
Maggie Malone Makes a Splash
Jenna McCarthy; Carolyn Evans
PG-13
Jungle Temple Oracle
Jungle Temple Oracle
Mark Cheverton
R
Flower Children
Flower Children
Elizabeth Gordon
PG-13
Blood Redemption
Blood Redemption
Tessa Dawn
PG-13
In the Enemy's Service
In the Enemy's Service
Annie Douglas Lima
PG-13
Zillions of Zombies
Zillions of Zombies
Derek The Ghost
PG-13
Starrie
Starrie
Heidi Ruby Miller
PG-13
Alaric: The Day the World Ended
Alaric: The Day the World Ended
R. A. Lafferty
PG-13
Katie's War
Katie's War
Michael Anderle; Michael Todd
R
Semper Fidelis
Semper Fidelis
Johnnie M. Clark
PG
Paralyzed
Paralyzed
Sarah Noffke
PG-13
The Fall of Rome
The Fall of Rome
R. A. Lafferty
PG-13
Smoke and Mirrors
Smoke and Mirrors
Rue Volley
PG-13
Gideon's Spear
Gideon's Spear
Darby Karchut
PG-13
Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 1
Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 1
Fujino Omori
PG-13
Bloody Waters
Bloody Waters
Jason Franks
PG-13
Dark Running
Dark Running
S. J. MacDonald
PG-13
Saving Crafter
Saving Crafter
Mark Cheverton
PG-13