Bonus game:


Press Left + B + Select at the title

screen. A white cat will walk across the bottom of the high score

screen to confirm correct code entry. Return to the title screen,

begin a new game, and start any stage. Game play will begin at

the bonus game.



Boss battle:


Press Right + A + B + Select at

the title screen. A black cat will walk across the high score

screen to confirm correct code entry. Return to the title screen,

begin a new game, and start any stage, Game play will begin at

a Boss battle. 



Reset scores:


Hold Start + Select at the high score screen.

Continue holding these buttons as the game displays the title

screen before returning to the high score screen. Then, hold Down

while keeping the previous buttons pressed. A bomb animation will

confirm correct code entry.



Save game:


Press Start to pause game play, then press Select

to save the game.