: Download a "100% Save" which includes a system.dat file and any .ydc (deck) files. Copy these into your Common folder, overwriting the existing ones.
: If cards do not appear, you may need to point the game to the correct folder via the Windows Registry Editor . Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\KONAMI\Yu-Gi-Oh! Power Of Chaos\system and ensure the CommonDir path matches your actual folder location. Troubleshooting Save Issues Reddit·r/Yugioh101 unlock all card yu-gi-oh power of chaos legend reborn
This is the most common method for modded versions like Legend Reborn. : Download a "100% Save" which includes a system
If you prefer not to use an executable, you can replace your save data with a 100% completed file. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\KONAMI\Yu-Gi-Oh
: The game stores progress in a "Common" folder, typically found in the installation directory (e.g., C:\Program Files (x86)\Yu-Gi-Oh! Power of Chaos Common ).