Start up a new game, then press Select (which will take you to the options menu). From here, select ''New Game'' then press the A Button. You will be able to enter a 3 letter code. Below are each code and what new feature it gives you:
Code Effect ZAP A new ''Zap'' sound effect is added to the game. MAN Reduce Number of Titles REV Reverse Titles. STF View the credits.
Contributed By: Dallas.
Press the following keys at title screen.
Code Effect Select + Start Go to Password Screen
Contributed By: DefaultUser1234.
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