Here's a breakdown:
* Novels: He wrote approximately 26 novels. This includes classics like *The Time Machine*, *The War of the Worlds*, *The Invisible Man*, and *The Island of Dr. Moreau*.
* Short Stories: He also wrote hundreds of short stories, which were often published in collections.
* Non-fiction: Wells wrote extensively on social, political, and scientific topics, authoring numerous non-fiction books and essays.
Therefore, depending on how you define "book," H.G. Wells wrote somewhere between 26 and well over 100 books.