R rated sci-fi books
5467 booksSci-fi books with mature content including explicit sex, graphic violence, or strong language. For adult readers.
Crusader
RDefiance of the Fall 16
R
Sugar Skulls
R
Nuclear Winter Series Box Set: Post Apocalyptic Survival Series Box Set
R
Rebellion
R
Escaping the Plague - A Post-Apocalyptic Survival Thriller
R
Trap Me!
R
The Vimana Incident
RJuniper Unraveling
R
Tom Swift and His Airship
R
Carpathia
R
prime
R
War Among the Ruins
R
The Stone Warriors
R
Warriors of Cumorah
R
Unstable Ground: A Post-apocalyptic Survival Thriller
R
Little Mushroom (Deluxe Hardcover Novel) Vol. 1 (Little Mushroom (Novel))
R
The 12,000-Year-Old Whisper
R
BloodMoon
R
Tom Swift and His Outpost in Space
R
Equilibrium
R
Nowhere to Turn: The Complete Series: A Thrilling Post-Apocalyptic Series
R
Scrapbook
R
The End of All Things: The Complete Series: (An Epic Survival Thriller Series)
R
Rogue Guns: A Military Sci-Fi Adventure
R
Exodus: Empires at War: Book 1
R
Fifteen Hundred Miles an Hour
R
Small Town EMP
R
Specter of the Past
R
The Young Messiah
R