Change Graphics (Japanese version)
This cheat will work only if the Famicom's internal microphone is triggered on by loud voice. Once it has been triggered, press Select 5 times at the title screen. Now press and hold Left & B on the 2nd controller and Right & A on the 1st controller. Then, press Select & Start at the same time on the 1st controller to enable the cheat. Release buttons and press Start to start the game.
At the title screen, press Select 10 times. Now, press and hold Up & Left on the 2nd controller and Right, Down, A & B on the 1st controller, then press Start on 1st controller to enable the cheat. Release buttons and press Start to begin the game. You will now be invincible and you'll be able to switch weapons by pressing Select.
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At the title screen, press Select 10 times on Controller #1. Then, hold Down + Right on Controller #2. Then, hold Up, Left, A, B on Controller #1, finally press Start 2x on Controller #1.
Contributed By: Dallas.
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