Thread:Adamjensen2030/@comment-26374068-20170819010607/@comment-26374068-20170819021300

Well, worlds in Mario don't always mean universes necessarily. They mean universe in Super Paper Mario, Super Mario Galaxy 2, Wario Land 3 and Mario & Luigi: Dream Team.

But they didn't mean universe in Mario & Luigi: Bowser's Inside Story or Paper Mario: The Thousand-Year Door. Overall, it all depends on the context.