Right-click the file, go to , and check "Read-only" . This prevents the game from overwriting your unlocked status if an error occurs. Troubleshooting: Cards Still Locked?
Since Power of Chaos is an older PC title, it stores card data in the Windows Registry rather than a modern cloud save. An updated "All Cards" cheat usually involves a .reg file that tells the game your collection is already complete. Steps to Unlock: yu gi oh power of chaos unlock all cards cheat upd
If you've followed the steps but the cards aren't appearing, try these "UPD" (updated) fixes for modern Windows 10/11 systems: Right-click the file, go to , and check "Read-only"