Hard R rated sci-fi books
114 booksSci-fi books with intense mature content including graphic gore, extreme violence, or disturbing themes. For adult readers who are comfortable with dark content.
A Game of Thrones
Hard RA Clash of Kings
Hard RA Feast for Crows
Hard RA Dance with Dragons
Hard RDark Age
Hard RThe Troop
Hard RThe Butcher and the Wren: A Novel (Dr. Wren Muller)
Hard RRise of the Strongest Girl Next Door 3
Hard RTomb World: Warhammer 40,000
Hard RUnstoppable
Hard RLight Bringer
Hard RGrave Matter: A Dark Gothic Romance Psych Thriller
Hard RFabius Bile: Primogenitor: Warhammer 40,000
Hard RAlarums
Hard RLethal Prey (A Prey Novel)
Hard RThey Thirst
Hard RTread Softly
Hard RSoul Eater
Hard RMaking The Grade
Hard RPrimitive War 1
Hard RThe Horus Heresy: Novella Collection 3: The Horus Heresy
Hard RManflayer
Hard RThe Girl Next Door
Hard ROffspring
Hard R