R rated sci-fi books

5467 books

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

The Painted War
The Painted War
Imogen Rossi
R
Blood Magic
Blood Magic
B. V. Larson
R
The Moon's Last Fortress
The Moon's Last Fortress
Christopher Bulis
R
People of the Morning Star
People of the Morning Star
Kathleen O'Neal Gear; W. Michael Gear
R
Scarborough Fear
Scarborough Fear
Maureen Duffy
R
The Carbon Trail
The Carbon Trail
Catriona King
R
Star Soldier
Star Soldier
Vaughn Heppner
R
Bio-Weapon
Bio-Weapon
Vaughn Heppner
R
Cyborg Assault
Cyborg Assault
Vaughn Heppner
R
Star Fortress
Star Fortress
Vaughn Heppner
R
The End of the World As We Know It
The End of the World As We Know It
Christopher Golden;Brian Keene
R
The Marriage Act
The Marriage Act
John Marrs
R
Ruarc
Ruarc
Jennifer Julie Miller
R
Rebellion
Rebellion
Karen Sandler
R
Evil Librarian
Evil Librarian
Michelle Knudsen
R
The Monkey Wrench Gang
The Monkey Wrench Gang
Edward Abbey
R
Going Grey
Going Grey
Karen Traviss
R
Jack and Mr. Grin
Jack and Mr. Grin
Andersen Prunty
R
The Grimjinx Rebellion
The Grimjinx Rebellion
Brian Farrey
R
Lizzie
Lizzie
Shirley Jackson
R
Prince Lestat
Prince Lestat
Anne Rice
R
The Dark Defiles
The Dark Defiles
Richard K. Morgan
R
Tenacious
Tenacious
Mike Shepherd
R
War God: Return of the Plumed Serpent
War God: Return of the Plumed Serpent
Graham Hancock
R
Unholy War
Unholy War
David Hair
R
The Eightfold Knife
The Eightfold Knife
Jonathan Moeller
R
Lod the Galley Slave
Lod the Galley Slave
Vaughn Heppner
R
Lod the Warrior
Lod the Warrior
Vaughn Heppner
R
Cat on the Edge
Cat on the Edge
Shirley Rousseau Murphy
R
Looking Backwards, from 2000 to 1887
Looking Backwards, from 2000 to 1887
Edward Bellamy
R