List of Super Mario World 2: Yoshi's Island pre-release and unused content

This is a list of pre-release and unused content for the game Super Mario World 2: Yoshi's Island.

Early iteration
Nintendo marketing department initially pressured Shigeru Miyamoto to have the game use prerendered 3D sprites similar to Donkey Kong Country. The 3D models of Baby Mario and Yoshi used in the introduction are leftovers of this period of development.

Early concepts

 * The developers experimented with several concepts for two of five years of development before settling with the final idea of "a game where even though you hit enemies, you don’t die". One of them was to have Yoshi move independently from Baby Mario and guide him around the levels.
 * The Superstar Mario form was initially supposed to transform Baby Mario into an adult, mustachioed Mario but it was pointed out this concept would seem strange. Shigeru Miyamoto joked he still prefers this early idea to the final version.

Unused Music
The following music sounds distorted in places. They are related to the main theme, which suggests that they might have been used at one point during development but were scrapped. The MIDI data contained might have had parameters changed.