remains a nostalgic masterpiece for retro duelists. However, manually grinding for all 771 cards can take hundreds of hours. If you want to bypass the endless grind and immediately jump into advanced deck-building, you must use a specific registry and save file workaround.
: These "Update 2025/2026" versions often include cards from Yugi the Destiny Kaiba the Revenge Modern Fixes : Many of these mods include Power of Chaos Engine
This is safe, widely used by fans, and doesn’t require hacking skills.
Unlock All Cards: Yu-Gi-Oh! Power of Chaos: Joey the Passion (Updated Guide) unlock all cards yugioh power of chaos joey the passion new
Click when the Windows User Account Control prompt appears.
If the system.dat file and the registry value do not match perfectly, the game detects a mismatch and completely wipes your progress. To successfully unlock everything, you must sync both elements or use an automated registry script. Step-by-Step Guide to Unlock All Cards
HKEY_LOCAL_MACHINE\SOFTWARE\KONAMI\Yu-Gi-Oh! Power Of Chaos\system Update the Value remains a nostalgic masterpiece for retro duelists
For those who want to unlock all cards quickly, here are some widely-used methods:
Download a complete system.dat file from a reputable community site (like a [Yu-Gi-Oh! fan forum](google.com of chaos joey the passion all cards system.dat file) or PCGamingWiki ).
Look for a folder named Common . If it doesn't exist, create it. : These "Update 2025/2026" versions often include cards
Once you've unlocked all cards, look for these powerhouses to dominate Joey: Jinzo, Summoned Skull, Cyber Jar.
Now go forth, duelist! Roll the Graceful Dice, summon Red-Eyes, and crush your opponents with every card in the game.
What are you running (Windows 10, Windows 11, Steam Deck)?
For players who want even more than just the original 350 or 771 cards, the modding community has created some incredible tools and expansions that go far beyond simple unlocking.
directory containing your unlocked cards, which can then be shared with other players using the "Data from another PC" option in the multiplayer menu. ArtMoney/Cheats: Some players use memory editing software like to manipulate duel results and win cards instantly. Troubleshooting Windows 10/11 Issues