Cheat menu
Press Down, Up, Left(2), A, Right, Down at the title screen. Select the "Cheat Enabled" option to access the following features:
P1 Win: Kill player two with one hit
P2 Win: Kill player one with one hit
Moon: Silhouettes appear in front of the moon
Dads: Strange player names
Green: Reptile appears before each match with a message
Lives: Unlimited credits
Flag 6: CPU does fatalities after winning two rounds
Turbo: Faster game play
Blood: Blood mode