MYSTERIUM

Cheat Location What Happens

press B, Select and Down simultaneously On The Map To drop down a level from the level you are currently on.

then press A, B, Left and Start simultaneously On The Map When you check your inventory, you will have an item called the "Pass Key" which can open any door in the game.

then press B, Up and Select simultaneously On The Map INVENTORY OVERLOAD

Cheat	Location	What Happens
press B, Select and Down simultaneously	On The Map	To drop down a level from the level you are currently on.
then press A, B, Left and Start simultaneously	On The Map	When you check your inventory, you will have an item called the "Pass Key" which can open any door in the game.
then press B, Up and Select simultaneously	On The Map	INVENTORY OVERLOAD