PG-13 rated sci-fi books
24434 booksSci-fi books with moderate content. May include moderate violence, mild romance, and some darker themes. Best for teens and up.

Last Day
PG-13
The Conveyance
PG-13
The Hour of Blue
PG-13
Starsight
PG-13
The American Way
PG-13
Siren Song On Dark Shores
PG-13
Allegiance
PG-13
Abandoned
PG-13
The Night Killers
PG-13
Sired by Stone
PG-13
A Stronger Wind
PG-13
The Brightness Of Shadows
PG-13
The Nemesis Equation
PG-13
The Children of the Damned
PG-13
The Giant Rumble
PG-13
The Great Improbability: An Autobiographical Mystery by the People of Earth
PG-13
The Alchemaster's Apprentice
PG-13
Big Daddy's Fast-Past Gadget
PG-13
Starship Warrior
PG-13
The Anytime Rings
PG-13
Children of Subspecies
PG-13
Snow Kill
PG-13
Alien from Cyberspace
PG-13
Maze of Existence
PG-13
Waking Apollo
PG-13
Seth Carter's Alien Adoption
PG-13
Guardian Angels: The Setting Moon
PG-13
Our Dying Land
PG-13
The Tribulations of Tompa Lee
PG-13
Mind Noise
PG-13