The "unlocker" is not an official patch from Konami. It is a third-party executable or hex-edited save file that forcibly modifies the game’s memory or registry to give the player:
In essence, it turns the game from a loot-box simulator into a sandbox deck-building tool. yu-gi-oh power of chaos joey the passion all cards unlocker
If you want the satisfaction of earning the cards legitimately, here is the fastest farming deck without cheats: The "unlocker" is not an official patch from Konami
Even with this optimized farm, expect 60 hours for full completion. In essence, it turns the game from a
The game saves player progression (unlocked cards, dueling points, and campaign progress) in a file named system.dat, located in the game’s installation directory or the user's Documents folder (depending on OS version).
Because the game lacks complex encryption on save files, unlocking all cards is achieved by overwriting the existing system.dat file with a pre-modified version that has the "All Cards Unlocked" flag set and the card inventory maximized.