Quickly press A, B, A(2), B(3), A(2), C(3) at the title screen.
Contributed By: DarknessofFate.
Enter these codes while the game is paused.
Code Effect C, A, left, right, A, B Both players invincible down, B, up, B, B, A Full energy for both players C, right, A, B, B, up Get upgraded weapons for both players right, A, down, C, A, right One life added for both players down, B, A, C, down, right Play Level menu
Contributed By: FFCrono.
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