PG rated sci-fi books

3620 books

Sci-fi books with mild content — safe for most readers. May contain mild peril or fantasy violence but nothing graphic.

The Soul Key
The Soul Key
Olivia Woods
PG
Generation 18
Generation 18
Keri Arthur
PG
Planet of the Gerks
Planet of the Gerks
Nick Ward
PG
Miss Felicity Beedle's The World of Poo
Miss Felicity Beedle's The World of Poo
Terry Pratchett; Bernard Pearson; Isobel Pearson
PG
Yellowfang's Secret
Yellowfang's Secret
Cherith Baldry
PG
The Thirteenth Mystery
The Thirteenth Mystery
Michael Dahl
PG
Allan and the Ice-Gods
Allan and the Ice-Gods
H. Rider Haggard
PG
The Green Round
The Green Round
Arthur Machen
PG
The Black Sun
The Black Sun
Jack Williamson
PG
The Good Fight
The Good Fight
Jerry Ahern
PG
A New Eden
A New Eden
Andrew Acworth
PG
An Exaltation of Larks
An Exaltation of Larks
Robert Reed
PG
Wildside
Wildside
Steven Gould
PG
A Covenant of Justice
A Covenant of Justice
David Gerrold
PG
As on a Darkling Plain
As on a Darkling Plain
Ben Bova
PG
The Red Tape War
The Red Tape War
Mike Resnick; Jack L. Chalker; George Alec Effinger
PG
Lucifer Jones
Lucifer Jones
Mike Resnick
PG
What Mad Universe
What Mad Universe
Fredric Brown
PG
Star Smashers of the Galaxy Rangers
Star Smashers of the Galaxy Rangers
Harry Harrison
PG
War of Omission
War of Omission
Kevin O'Donnell, Jr.
PG
Mars Plus
Mars Plus
Frederik Pohl; Thomas T. Thomas
PG
Journey
Journey
Marta Randall
PG
The Hereafter Gang
The Hereafter Gang
Neal Barrett, Jr.
PG
The Genocides
The Genocides
Thomas M. Disch
PG
Against the Fall of Night
Against the Fall of Night
Arthur C. Clarke
PG
The Chromosomal Code
The Chromosomal Code
Lawrence Watt-Evans
PG
The Crossroads of Time
The Crossroads of Time
Andre Norton
PG
The Cold Cash War
The Cold Cash War
Robert Asprin
PG
Alien Dust
Alien Dust
E. C. Tubb
PG
Haven of Darkness
Haven of Darkness
E. C. Tubb
PG