List of Wario Land: Super Mario Land 3 pre-release and unused content
From the Super Mario Wiki
This is a list of pre-release and unused content for the game Wario Land: Super Mario Land 3.
Wario Land contains two different debugging pages. The first can be accessed at any time by pausing the game and pressing Select 16 times. The second can only be accessed with cheats and allows free level select.
There is an unused cutscene in which the boss Bobo, typically fought on the S.S. Tea Cup, is shown in a wooded area, that seems similar to Parsley Woods. Additionally, it shows Bobo sitting down, something never done in the final game. Syrup Castle can be seen in the distance. It is unknown what this scene would have been used for.