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

This article pertains the the beta elements from Super Mario World 2: Yoshi's Island.

This game was going to have more forms that Yoshi could turn into: a mushroom, a tree, and a plane (which was likely replaced by the Yoshi Helicopter).

There are Tweeter sprites present in the game's coding that looked identical to the Tweeters of Super Mario All-Stars, and a Super Mario All-Stars Shy Guy is also present within the game. There are also some Bob-ombs using the wrong palette. There is also a frowning, rock-like block present in the game's coding, and, perhaps even more oddly, a hulking, barrel-throwing, tie-clad Grinder that seems to deliberately resemble Donkey Kong. There is also a Biting Bullet Bill that is fully functional but is unused.