R rated sci-fi books
5467 booksSci-fi books with mature content including explicit sex, graphic violence, or strong language. For adult readers.
Saturn
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In the Shadow of Omizantrim
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Cat with an Emerald Eye
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Star Trek: First Contact
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To Say Nothing of the Dog, or How We Found the Bishop's Bird Stump at Last
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Flanders
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The Cyborg from Earth
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Swords of Lankhmar
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Inhuman Beings
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The Dreamer and the Deep Space Warrior
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Orion's Dagger
RThe Sixth Nik
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Maia's Veil
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Escape from the Twisted Planet
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Reach
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Trouble on Cloud City
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Eyes of the Empress
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Return to Ord Mantell
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Rebel
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Domination
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Obsession
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The Moon Microbe
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Transmitters: An Imaginary Documentary 1969-1984
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Quaoar: A Trip
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Eddy Deco's Last Caper: An Illustrated Mystery
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In the Morning of Time: The Story of the Norse God Balder
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Chaos Child
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First Action
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And All the King's Men
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The Primal Hunter 15: A LitRPG Adventure
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