If the registry mod doesn't stick, try running the game in Compatibility Mode for Windows 7 or XP.
For many players, the standard progression of unlocking cards one by one can be a long and tedious process. This is where the "All Cards Unlocker" comes in. As the name suggests, this is a modification or a patch that instantly unlocks every card available in the game. Yu Gi Oh Marik The Darkness All Cards Unlocker
These are pre-completed save files that you place in the game's data folder to replace your current progress with a 100% complete collection. Step-by-Step Installation Guide If the registry mod doesn't stick, try running
Before making changes, locate your game folder (usually in C:\Program Files (x86)\KONAMI\Yu-Gi-Oh! Power of Chaos Marik the Darkness ) and copy your existing save files to a safe location. As the name suggests, this is a modification