Body World is a location in Mario's Early Years! Preschool Fun. It is one of the six islands in the game and is represented by a paper doll facsimile of the human body.
Unlike other worlds, there is no traditional learning activity and as such, the room is more suited to discovery. Mario stands outside in a grassy plain with Donut Plains mountains in the background. Here these items can be selected:
In the MS-DOS version of the game, additional body parts can be selected:
Additionally, outside of Mario's body, the following items can be interacted with: