Editing World A

In the Famicom Disk System version of ''Super Mario Bros. 2'', the player must beat the game eight times and press the Start button while holding down the A button on the title screen in order to access World A, and in turn the other later worlds. In the ''Famicom Mini'' version for the Game Boy Advance, this was changed so that the B button must be held instead of the A button. However, in the ''[[Super Mario All-Stars]]'' version of the game, the player proceeds to the later worlds directly after completing World 8 (or World 9 if the player accesses it by beating Worlds 1 to 8 without using warp pipes). World 9 and the later worlds were left unused in the ''[[Super Mario Bros. Deluxe]]'' version of the game.

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