Cover of The Worst Book in the Whole Entire World by Joey Acker, featuring Nameless the Rock holding a red WORLD balloon against a white background.

The Worst Book in the Whole Entire World

WARNING: You are about to read the WORST book in the whole entire world!

At least, that's what Nameless the Rock™ thinks.

He's stuck inside a book he absolutely cannot stand, and he's determined to convince readers that everything about it is terrible. The illustrations? Awful. The story? Even worse.

With ridiculous humor, simple illustrations, and plenty of fourth-wall-breaking moments, The Worst Book in the Whole Entire World is a funny, interactive picture book for children who love silly stories and characters with attitude.

Perfect for family storytime, classroom read-alouds, and reluctant readers who could use a good laugh.

Book Details

Author & Illustrator: Joey Acker

Series: Worst World Works™

Publisher: Sourcebooks Wonderland

Format: Hardcover

Pages: 48

Publication Date: August 18, 2026

ISBN: 9781464293788

Recommended Ages: 4–8