Cheat Codes Change Outfits: You can change your character's outfits by tapping the four C Buttons at the character select screen. Some costume changes are limited to colors, but characters like Pikachu are also available with a hat. Classic Mushroom Kingdom: To access the hidden classic Mario stage (complete with POW signs, Piranha plants, warp tubes and elevator), beat the game's one- player mode with each character. At the end, the game will tell you that you can now access Classic Mushroom Kingdom in the versus mode. Play as Captain Falcon: To play as Captain Falcon, simply beat the game as one of the regular characters. When Captain challenges you, defeat him and he will be a playable character. Play as Luigi: To play as Luigi, pass the Bonus Practice 1 for at least 8 main characters and Luigi will challenge you. Defeat him and he's yours. Play as Purin: To play as Purin, play a game as Captain Falcon. After you beat the game Purin will challenge you. Defeat her and you will receive the second Hidden Character.