Successfully complete the game, then load the saved game file and select any level. The game will begin with new routes at a harder difficulty setting.
Achieve a rank of 95% or higher to play as Ulala surrounded by purple fire.
Michael Jackson can be found in the last level of the game.
Pause the game and press X + Y.
If you see a game that is not listed mail me and I will find the cheats and put them on the site. Or if you want to submit cheats mail me.