Unlocking all cards in Yu-Gi-Oh! Joey the Passion requires dedication, strategy, and a bit of luck. Here are some methods to help you unlock all cards:
Note: Most versions limit password usage to 3 cards per day to prevent abuse. To unlock "all" cards via password, you will need to manually enter hundreds of codes, which is tedious. For a complete unlock, a save file editor or Action Replay code (see Method 5) is faster.
After defeating Yugi 3+ times with an A/S rank, you’ll unlock the full card pool (over 300 cards).
Once there, you can input numeric codes found on real-life Yu-Gi-Oh! trading cards. To unlock all cards instantly, you need the passwords for Joey’s signature cards plus the rare staples.