Book Series · 3 Books

World's Worst Time Machine Books

In order from World's Worst Time Machine to World's Worst Time Machine.

The World's Worst Time Machine series is a set of 3 chapter books by Dustin Brady, published between 2023 and 2025. Written for ages 7–11, most books run about 230 pages.

Where the story begins

First Book in the Series

Graphic Nov.

Sale price

$958

Book #1 · Chapter Book · Ages 7–11 · 2023

World's Worst Time Machine

By Dustin Brady, Dave Bardin (Illustrator)

A $3 time machine brings chaos, gangsters, and missing parents. Can two kids fix the timeline?

192 pages

$9.99Save 4%

Paperback

Summary: Liam's $3 time machine summons a 1933 gangster instead of Thomas Edison, and his parents vanish. With his friend Elsa, they must navigate a world of sci-fi gadgets and real-life gangsters to restore order. Can these fifth graders outsmart time and save the day, or will chaos reign? Join their hilarious, action-packed adventure filled with unexpected twists and a whole lot of Cheetos.

In reading order

World's Worst Time Machine Series

3 books · Published 2023–2025

#1 in Series

Graphic Nov.

Sale price

$958

World's Worst Time Machine

Chapter Book · Ages 7–11 · 2023

A $3 time machine brings chaos, gangsters, and missing parents. Can two kids fix the timeline?

#2 in Series

Sale price

$1139

Treasure in the White City

Chapter Book · Ages 7–11 · 2024

A time machine, a hidden treasure, and a race against rival travelers. Can they solve the mystery?

#3 in Series

Sale price

$1139

World's Worst Time Machine

Chapter Book · Ages 7–11 · 2025

A time machine, hidden secrets, and a quest to uncover truth. What if everything you know is a lie?

Good to know

Common Questions

How many books are in the World's Worst Time Machine series?

There are 3 books in the World's Worst Time Machine series. It began with World's Worst Time Machine in 2023, and the newest book, World's Worst Time Machine, was published in 2025.