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 Battle Immortal
The Battle Immortal
Karen Azinger
R
Seven Beyond
Seven Beyond
Stella Atrium
R
Ricky Ricotta's Giant Robot vs. the Mutant Mosquitoes from Mercury
Ricky Ricotta's Giant Robot vs. the Mutant Mosquitoes from Mercury
Dav Pilkey
R
Midnight Tides
Midnight Tides
Steven Erikson
R
Keep Calm and Sparkle On!
Keep Calm and Sparkle On!
Sarah Aronson
R
Young Hercules
Young Hercules
Mel Odom
R
Survivor in Death
Survivor in Death
J. D. Robb
R
Rogue Saucer
Rogue Saucer
John Vornholt
R
The Best and the Brightest
The Best and the Brightest
Susan Wright
R
Bad Memory
Bad Memory
Duane Franklet
R
Semper Mars
Semper Mars
Ian Douglas
R
Night Calls
Night Calls
Katharine Eliska Kimbriel
R
The Rising
The Rising
James Doohan; S. M. Stirling
R
The Death of Princes
The Death of Princes
John Peel
R
Asylum
Asylum
Patrick McGrath
R
Bloom
Bloom
Wil McCarthy
R
Wedge's Gamble
Wedge's Gamble
Michael A. Stackpole
R
Descent
Descent
Diane Carey
R
Cyberius III
Cyberius III
S. J. Willing
R
Wolffile
Wolffile
Jack Woods
R
The Tides of God
The Tides of God
Ted Reynolds
R
The Luck of Relian Kru
The Luck of Relian Kru
Paula Volsky
R
The Wings of a Falcon
The Wings of a Falcon
Cynthia Voigt
R
Perchance to Dream
Perchance to Dream
Maura Seger
R
Probability Moon
Probability Moon
Nancy Kress
R
Enterprise: The First Adventure
Enterprise: The First Adventure
Vonda N. McIntyre
R
The Fresco
The Fresco
Sheri S. Tepper
R
The Elementals
The Elementals
Michael McDowell
R
Come Endless Darkness
Come Endless Darkness
Gary Gygax
R
Transformer
Transformer
Philip Gross
R