Pass Key Plus for Mysterium - Gameboy

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• Pass Key Plus

Call up the Map, then press A, B, Left and Start simultaneously. When you check your inventory, you will have an item called the "Pass Key" which can open any door in the game. Drop it into a pool, and it will transform into a "Downlevl" which will allow you to drop down a level in the dungeon. Drop the "Downlevl" into a pool, and it will transform into an "Uplevel" which will allow you to transport up a level in the dungeon. Drop the "Uplevel" into a pool, and it will transform into a "Superpow" which makes you invincible to enemy fire.

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