There are 2 books in the World's Worst Time Machine series.
The World's Worst Time Machine series does not have a new book coming out soon. The latest book, Treasure in the White City (Book 2), was published in April 2024.
The first book in the World's Worst Time Machine series, World's Worst Time Machine, was published in May 2023.
The World's Worst Time Machine series primarily falls into the Speculative Fiction genre.