Hard R rated sci-fi books

114 books

Sci-fi books with intense mature content including graphic gore, extreme violence, or disturbing themes. For adult readers who are comfortable with dark content.

The Dragon Republic
The Dragon Republic
R.F. Kuang
Hard R
The Burning God
The Burning God
R.F. Kuang
Hard R
Kushiel's Dart
Kushiel's Dart
Jacqueline Carey
Hard R
Kushiel's Avatar
Kushiel's Avatar
Jacqueline Carey
Hard R
Forsaken
Forsaken
J. D. Barker
Hard R
Blood Slaves
Blood Slaves
Markus Redmond
Hard R
The Minotauress
The Minotauress
Edward Lee
Hard R
Rolling Hot
Rolling Hot
David Drake
Hard R
The Night Boat
The Night Boat
Robert R. McCammon
Hard R
The Lake
The Lake
Richard Laymon
Hard R
The Butcher Game
The Butcher Game
Alaina Urquhart
Hard R
Womb City
Womb City
Tlotlo Tsamaase
Hard R
Nevernight
Nevernight
Jay Kristoff
Hard R
Grinding For Credits: A LitRPG and GameLit Series.
Grinding For Credits: A LitRPG and GameLit Series.
Jason Cheek
Hard R
Carrion
Carrion
Gary Haynes
Hard R
The Solar War
The Solar War
John French
Hard R
Drawing Blood
Drawing Blood
Poppy Z. Brite
Hard R
The Grave Diggers Complete Series, Book 1-8
The Grave Diggers Complete Series, Book 1-8
Chris Fritschi
Hard R
Warhound
Warhound
Kallidora Rho
Hard R
Reaper of Souls
Reaper of Souls
Dan Abnett; Mike Lee
Hard R
Friday Night in Beast House
Friday Night in Beast House
Richard Laymon
Hard R
Eisenhorn: The Omnibus (Warhammer 40,000)
Eisenhorn: The Omnibus (Warhammer 40,000)
Dan Abnett
Hard R
Primal
Primal
Christopher Hood
Hard R
Entangled: A Steamy Post-Apocalyptic Romance
Entangled: A Steamy Post-Apocalyptic Romance
Rebecca Quinn
Hard R
Saturnine (The Horus Heresy: Siege of Terra)
Saturnine (The Horus Heresy: Siege of Terra)
Dan Abnett
Hard R
Legacies of Betrayal
Legacies of Betrayal
Graham McNeill;Aaron Dembski-Bowden;Chris Wraight;Nick Kyme
Hard R
The End and the Death: Volume II (Horus Heresy: Siege of Terra, 2)
The End and the Death: Volume II (Horus Heresy: Siege of Terra, 2)
Dan Abnett
Hard R
Stranglehold
Stranglehold
Jack Ketchum
Hard R
War Without End
War Without End
David Annandale
Hard R
Crocodile Tears: Heart-pounding MM romantic suspense thriller set in a dystopian near future where dark water, deadly secrets, and dangerous love collide.
Crocodile Tears: Heart-pounding MM romantic suspense thriller set in a dystopian near future where dark water, deadly secrets, and dangerous love collide.
Xanthe Walter
Hard R