List of New Super Mario Bros. 2 pre-release and unused content

The beta elements of the Nintendo 3DS game, New Super Mario Bros. 2, are listed in this page.

Beta Elements

 * As seen in the screenshot, the number of coins would originally have an "x" next to it, as in the original, but this is changed in the final version.
 * Nintendo considered this game to be called New Super Mario Bros. Gold, but due to some of the over 80 stages being said to stand on their own outside the coin theme of the game, the game was renamed to New Super Mario Bros. 2.
 * The overworld theme, which is a remixed version of the New Super Mario Bros. Wii overworld theme, originally had a different remix. It had less extra vocals than the final version, as well as sounding different to the final version.
 * As shown in the E3 trailer, originally only 5 coins were given for each consecutively defeated enemy under the effects of the Gold Ring. In the final version, the amount of coins rewarded increases by 5 for every golden enemy defeated consecutively.
 * The underground section of World 2-1 was designed differently than in the final version. In the final version, the pipe led into a room with Brick Blocks at the end, blocking another exit that could only be entered via a Gold Flower. This part wasn't in the beta version.
 * Originally, the Reznor boss fight had the same music as the Koopaling Tower fight in New Super Mario Bros. Wii, but this was changed to a remix of the Super Mario World Boss theme in the final version.
 * The pipes in World 4-2 were originally purple but are now red. Also the Brick Blocks are brown instead of gray in the level.