SD Gundam Force: Showdown! Cheats

Uncover all forms for your 3 Gundams, acquired items and enemies you fought and then the next time you return to Neotopia, Mayor Margaret, Prio and Leonardo will stand outside. Talk to them and they will mention that the secret in the "Options" menu will be unlocked. Once you saved your game and quit, go to "Options" and "Sound Gallery" will be available. Here, you can listen to all of the BGMs used in this game.