Yu-Gi-Oh! Nightmare Troubadour Unlockables

Win the Expert Cup. The Password Machine can now be accessed in the Duel Shop by tapping the slot machine on the left. The Password Machine allows you to type in the ID number of a card you have and insert it into the game (for 1000 KC). Passwords will only work if you have obtained at least 80% of the pack it comes in (you have the card list) or the card is on your card list (total). You can only get one copy of a card, and no God cards.

Have the Game Boy Advance game Yu-Gi-Oh! GX: Duel Academy in the cartridge slot to start with three Wing Koriboh cards.