If you want to do it without cheats, you need to play through the "Story Mode." Here is the roadmap to unlocking the exclusive booster packs:

In Joey the Passion, there’s no in-game shop or booster pack system. Instead:

You can rematch opponents infinitely, making grinding possible — but time-consuming.

If grinding isn’t your style, you can unlock all cards instantly using a saved game file or trainer. One known method:

Alternatively, use a memory editor like Cheat Engine to modify card quantities, but the save file method is simpler and safer.

Did you know Power of Chaos: Joey the Passion has a built-in password system? You don't need to grind for rare cards like Jinzo or Insect Queen.

Working Passwords for "New" Unlocks:

Note: You need enough DP to "buy" the card after entering the password. If you have 0 DP, this won't work.

It is an open secret within the Power of Chaos community that the "intended" method of unlocking all cards is widely considered too time-consuming for modern standards. The game features 771 unique cards. Due to the random nature of drops, a player could win hundreds of duels and still be missing a single key card (such as "Black Luster Soldier - Envoy of the Beginning" or "Relinquished").

Consequently, the definition of "unlocking all cards" for a new player today typically involves modifying the game save file.

If you want 100% completion without cheating, follow this optimized grind strategy:

💡 Pro Tip: Build two Decks — one optimized for winning fast (beatdown with 1900+ ATK monsters) and one for losing quickly (all weak monsters + no Traps). Switching between them cuts grind time in half.