Adult 18+ sci-fi books

31474 books

Mulligan Magic
Mulligan Magic
Deb Stover
R
Game Over
Game Over
Andrew Klavan
PG-13
The Doomed City
The Doomed City
Boris Strugatsky; Arkady Strugatsky
PG-13
Immortal Nights
Immortal Nights
Lynsay Sands
PG-13
God Awful Thief
God Awful Thief
S. Acevedo
PG-13
The Green Pearl
The Green Pearl
Jack Vance
R
Vengeance Moon
Vengeance Moon
Jocelin Foxe
PG
Edward Maret: A Novel of the Future
Edward Maret: A Novel of the Future
Robert I. Katz
R
Claws That Catch
Claws That Catch
John Ringo; Travis S. Taylor
PG
Chaos and Order
Chaos and Order
Stephen Donaldson
PG-13
Spawn of the Devil
Spawn of the Devil
Christopher Nicole
PG-13
501st
501st
Karen Traviss
PG-13
Dragon Moon
Dragon Moon
Carole Wilkinson
PG-13
Children of the Lost Moon
Children of the Lost Moon
Gabrielle Blue
PG-13
One Flew Over the Cuckoo's Nest
One Flew Over the Cuckoo's Nest
Ken Kesey
R
Aliens in Disguise
Aliens in Disguise
Clete Barrett Smith
PG-13
The Rise of Endymion
The Rise of Endymion
Dan Simmons
R
The Shadow Constant
The Shadow Constant
A. J. Scudiere
PG-13
Absolution
Absolution
Karen McQuestion
PG-13
Numen's Trust
Numen's Trust
Pat Nelson Childs
PG-13
Savor
Savor
Kate Evangelista
PG-13
Lancelot
Lancelot
Jack Whyte
PG-13
Krystal's Charge
Krystal's Charge
Aleesah Darlison
PG-13
The Children's War
The Children's War
J. N. Stroyar
PG-13
The Forever Song
The Forever Song
Julie Kagawa
PG-13
The Disappeared
The Disappeared
Cathy MacPhail
PG-13
Goblin Quest
Goblin Quest
Philip Reeve
PG-13
Abyss
Abyss
Claire Delacroix
PG-13
Striking the Root
Striking the Root
Kris Schnee
PG-13
A Touch of Poison
A Touch of Poison
Aaron Kite
PG-13