I don't think that's a good solution, unless you think your games are books.
I've changed the logic for how physical game covers are cropped so they work like books since it seems many people have other aspect ratios for their covers.
Viewing post in Physical games classification project
I mean, the games we have up on here are also books; RPG books. They're both "physical games" and "books", if you define them by their form. If you use the stricter definition offered for the book category on itch, e.g., "tells a story" it's a bit muddier.
At this point I've also got, like, dozens and dozens of entries, so it'd be some work to go through and recategorize them all...