This page contains One Piece: Grand Adventure Unlockables for Gamecube called "Sound test" and has been posted or updated on Oct 31, 2006 by badgirl2419. Let us know what you think of this Unlockable by thumbs voting.
- Developer: Ganbarion
- Publisher: Namco Bandai Games America
- Genre: Action Fighting 3D
- Release Date: Aug 29, 2006
- ESRB: Teen
Get all of the cards by playing Arena mode in Grand Battle mode to unlock the "Sound Test" option.
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