At the title screen, press Select so that the player reads "NINJA". Then press and hold Select again so that it reads "Option". While still holding Select, press and hold Start to enter the sound test.
Start a game and purposely let enemies kill your character. While the character is exploding, hold Down until the continue screen appears. Continue your game, let enemies kill your character again and this time hold Left while your character is exploding, until the continue screen appears. Repeat the same process, but hold Right next time. Now you have used up all your continues, so let your character be killed one last time and hold Up while your character is exploding. If done right, instead of getting the game over screen, you'll get the Stage Select menu.
Hold I and press Up, Right, Down, Left on the title screen. Then, release I and press Up, Right, Down, Left.
Contributed By: Mr T Virus.
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