New Super Mario Bros. 2 Cheats - 3DS
Play as Luigi
Finish the game by beating Bowser in World 6. After you do that, when on the file select screen, hold down [L]+[R] while selecting a file with the [A] button. Luigi will now be your selected character.
Unlimited Use of Mushroom Houses
Clear the Star World once.
Save File Stars
By meeting certain achievements in the game, you can get stars appended next to your save file:
Beat World 6-Castle.
Obtain every Star Coin.
Obtain all of World Star's Moon Coins.
Complete every level.
Get the highest possible number of lives.