To unlock all cards in the Yu-Gi-Oh! Power of Chaos trilogy (Yugi, Kaiba, and Joey), you generally need a combination of a modified system.dat file and a registry update to point the game to that file. Because progress is stored in the "Common" folder rather than individual game directories, a single updated save can sync across all three titles. Current Cheat/Unlock Methods (2025/2026)
Run as Administrator: Right-click the game's .exe file and select Run as Administrator to ensure the game has permission to read the updated save and registry data. Registry Troubleshooting & Modern Fixes yu gi oh power of chaos unlock all cards cheat upd
The “Cheat” Scene Back Then
In the mid‑2000s, fans created trainers and save file editors for Power of Chaos. These small third‑party tools could: To unlock all cards in the Yu-Gi-Oh
The Power of Chaos series features a combined pool of hundreds of cards, but many of the best ones have incredibly low drop rates. By using a save file or registry patch, you can: Skip the Grind: Instantly access 100% of the cards. By using a save file or registry patch,
If you are playing the original CD versions of the game (and not the Steam/re-release versions), the game stores unlock data in the Windows Registry. You can manually edit this to unlock cards.