Bad Dudes

Sixty four lives:
Press B, A, Up, Down, Up, Down on controller two at the title screen. Then, press Start on controller one to begin game play. Alternately, press B, A, Down, Up on controller two at the title screen.

Sixty three lives:
Press B, A, Down, Up, Down, Up on controller two at the title screen. Then press Start on controller one.
Information in this section was contributed by Ron Wilgenbusch.

In the Japanese version, press A, B, Down, Up, Down, Up on controller two at the title screen. Then press Start on controller one.

One-hit kills:
Press Up(2), Down(2), Left, Right, Left, Right A, B on controller two at the title screen. Then press Start on controller one.

In the Japanese version, press Up(2), Down(2), Left, Right, Left, Right B, A on controller two at the title screen. Then press Start on controller one.

Sound test:
When "The End" appears and the flag stops waving at the ending sequence, press Right, Left, Down, Up, A(2), B on controller two. The flag will move again to confirm correct code entry. Press B on controller one to hear music from the game.

In the Japanese version, when "The End" appears and the flag stops waving at the ending sequence, press Right, Left, Down, Up, B(2), A on controller two. The flag will move again to confirm correct code entry. Press A on controller one to hear music from the game.

Play as Super Man:
Quickly press Up, Down, Left, Right, A, B, A, B(2), A, B, A, Right, Left, Down, Up at the title screen.

Super punch:
Hold A until your character begins to flash. Release the button to execute a super punch.

Spinning kick:
Press A + B + Left or A + B + Right and make contact with your opponent.