Building World (Mario's Early Years! Fun with Letters for PC)

Building World is a world exclusive to the PC version of Mario's Early Years! Fun with Letters. It is one of the seven islands in the game and is represented by a pair of building blocks.

The world takes place in an area of pipes and a background of puzzle pieces.

It revolves around a baseball game setting, where players must sound out three-or-four-letter words depending on what is clicked on. Various animations occur when the cast is clicked on.