Most unlockers function by replacing the system save file (usually named system.dat ) or the user profile file ( *.dat ). The game checks these files upon startup to determine which cards are available in the shop or deck constructor. By replacing a fresh file with a "completed" file, the game is tricked into thinking the player has already completed the grind.
The primary draw of these games is deck experimentation. Without an unlocker, players must win hundreds of duels to earn individual cards. yu-gi-oh power of chaos all cards unlocker
Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\KONAMI\Yu-Gi-Oh! Power of Chaos\system . Most unlockers function by replacing the system save