This category includes articles pertaining to worlds from the games (not specific places in them). Some, like Monstro, are not "worlds" in context of the story (i.e. not bearing a keyhole). Others, like the Underworld, are not "worlds" in context of the game (i.e. location titles indicating them as extensions of worlds).
This category has the following 51 subcategories, out of 51 total.