Most Wikia sites started life with just three subcategories of this category:
- Content - the subject-matter of the wiki (in this case all about the game)
- Files - images and other files, about either the game or the wiki
- Organization - administration of the wiki, wiki policy, copyright, contributors, etc, not being part of the game
It makes it easier for browsing readers to find the categories that interest them most. Leaving it as is will tend to make the task harder if more 2nd-level categories are added.
How about moving to that grouping?