R rated sci-fi books

5467 books

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

Saint Odd
Saint Odd
Dean R. Koontz
R
Dead of Winter
Dead of Winter
Kresley Cole
R
Record of the Blood Battle
Record of the Blood Battle
Hideyuki Kikuchi
R
Hive Invasion
Hive Invasion
Travis Morgan
R
Deadeye
Deadeye
William C. Dietz
R
Proud Helios
Proud Helios
Melissa Scott
R
The Final War
The Final War
Barillet-Lagargousse
R
The Tempest
The Tempest
Susan Wright
R
Prisoners of Peace
Prisoners of Peace
John Peel
R
Gamers' Rebellion
Gamers' Rebellion
George Ivanoff
R
Battle For The Park
Battle For The Park
Colin Dann
R
Pearry Teo's Bedlam Stories: The Battle for Oz and Wonderland Begins
Pearry Teo's Bedlam Stories: The Battle for Oz and Wonderland Begins
Christine Converse
R
The Hunger War
The Hunger War
Brian Pinkerton
R
Earth vs. Aliens
Earth vs. Aliens
T. Jackson King
R
The Dogs
The Dogs
Robert Calder
R
Warped
Warped
K. W. Jeter
R
Zom-B Bride
Zom-B Bride
Darren Shan
R
Lucky Strike
Lucky Strike
Bobbie Pyron
R
No One Gets Out Alive
No One Gets Out Alive
Adam Nevill
R
Swept Away
Swept Away
Dafydd ab Hugh
R
Genecode Illegal
Genecode Illegal
T. Jackson King
R
Marine Cadet
Marine Cadet
Tim C. Taylor
R
Green with Envy
Green with Envy
Jessica Burkhart
R
The Darkside War
The Darkside War
Zachary Brown
R
Fork-Tongue Charmers
Fork-Tongue Charmers
Paul Durham
R
Outbound Flight
Outbound Flight
Timothy Zahn
R
Matched to the Alien Rancher at Christmas
Matched to the Alien Rancher at Christmas
Mina Carter
R
The Devil Is a Part-Timer!, Vol. 1
The Devil Is a Part-Timer!, Vol. 1
Satoshi Wagahara
R
War of the Gates
War of the Gates
Mark Murray
R
Alien Wars
Alien Wars
Vaughn Heppner
R