Adult 18+ sci-fi books

30997 books

Fudge Factor
Fudge Factor
Robert Elmer
R
A Time of Torment
A Time of Torment
John Connolly
PG-13
A Minty Mess
A Minty Mess
Helen Perelman
PG-13
Voice of Mars
Voice of Mars
Glynn Stewart
PG-13
Cursed: A Werewolf's Tale
Cursed: A Werewolf's Tale
David Wellington
PG-13
Eleven Terrible Months
Eleven Terrible Months
R. L. Royle
G
Left of Africa
Left of Africa
Hal Clement
PG-13
We, the Forsaken
We, the Forsaken
Laken Cane
PG-13
The Vengeance Equation
The Vengeance Equation
Kenneth Tam
PG-13
The Discovery of the Dead
The Discovery of the Dead
Allen Upward
PG-13
An Alien Dies
An Alien Dies
K. A. Applegate
PG-13
Conquer the Dark
Conquer the Dark
L. A. Banks
PG-13
Secret of the Shadows
Secret of the Shadows
Cathy MacPhail
PG-13
Space Crime Conspiracy
Space Crime Conspiracy
Gareth P. Jones
PG-13
Successio
Successio
Alison Morton
PG-13
The Order of the Blood
The Order of the Blood
Nicole Vlachos; Lane Morris
PG-13
Chomp of the Meat-Eating Vegetables
Chomp of the Meat-Eating Vegetables
Troy Cummings
PG-13
The Secret of the Snow
The Secret of the Snow
Thea Stilton
PG-13
Hide and Sidhe
Hide and Sidhe
J. E. Bruce
R
My Tethered Soul
My Tethered Soul
Dorothy Dreyer
PG-13
A Pterodactyl Stole My Homework
A Pterodactyl Stole My Homework
Nick Falk
PG-13
The Miners and the Morkoths
The Miners and the Morkoths
Phillip W. Simpson
PG-13
Dead of Winter
Dead of Winter
Kresley Cole
R
The Starry Window
The Starry Window
Patricia Bow
PG-13
Rush Revere and the American Revolution
Rush Revere and the American Revolution
Rush Limbaugh
PG-13
The Impossible Race
The Impossible Race
Chad Morris
PG-13
Goodbye to Atlantis
Goodbye to Atlantis
Troon Harrison
PG-13
Festive in Death
Festive in Death
J. D. Robb
PG-13
Sundogz
Sundogz
Mark von Schlegell
PG-13
Dark Child: Covens Rising
Dark Child: Covens Rising
Adina West
PG-13