Zero The Kamikaze Squirrel (Genesis)
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Pause game play and press Right, Up, B, A, Down, Up, B, Down, Up, B.
Level select
Pause game play and press A, C, Right, A, B.
Unlimited health
Pause game play and press B, Up, B(2), A.
Unlimited lives
Pause game play and press B, A, B, Up.
Unlimited shuriken
Pause game play and press Down, A, B.