: If the game was previously registered on your PC, the key might be tucked away in your Windows Registry under HKEY_CURRENT_USER\SOFTWARE\PopCap\Zuma .
If the game was previously activated on your PC, the key may be stored in the registry.
If you want a way to play Zuma Deluxe, do not look for a standalone PopCap key. That ship has sailed. Instead, buy the modern port.
Unlocking the Classics: Your Guide to Zuma Deluxe Registration