Start with high-confidence games books, then narrow by subgenre or adjacent topics.
Super Duper Extra Deluxe Essential Handbook (pokémon)
Scholastic
Trapped in a Video Game: the Complete Series
Dustin Brady, Jesse Brady
Super Mario Encyclopedia: the Official Guide to the First 30 Years
Nintendo
The Couple's Activity Book
Crystal Schwanke
Five Nights at Freddy's: Ticket to Fun Ephemera Kit
Unknown author
