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Yu-Gi-Oh! Nightmare Troubadour
Unlockable: Credits & Minigame
Insert the code 00003750 at the KC Card Shop to view the game’s end credits, as well as a minigame.
Unlockable: Password Machine
You must win the Expert Cup Finals.
Unlockable: Music Gallery
Insert the code 57300000 at the KC Card Shop to view the in-game music gallery.
Unlockable: Wing Koriboh
Put Yu-Gi-Oh!GX Duel Academy into the GBA Slot of the Nintendo DS. Start Yu-Gi-Oh! Nightmare Troubadour and 3 Wing Koriboh cards will unlock.
