=>Stage/Difficulty Select: Select a 1 or 2 player game, then hold A or B
and press START to begin a game.
=>Better Stage Select: Hold down A+B when you turn on your NES. Keep them down
while you press STARTx2, and you will be given a list of stages 1-9.
=>Continue: Either choose Continue on the Continue/Start screen after the game
ends, or hold A+B as soon as the GAME OVER message displays.
* During a two player game, you can press A B B A to continue if you run out
of lives.
* Or, in a two player game, when one player dies, he may not reappear on
screen. In this case, hold A+B for a few moments to jump back into the fray
without using a continue!
=>Options Screen: On the 1 or 2 player screen, press SELECT+START+B
simultaneously. When the Options screen appears, use U and D to select
options, A to change, and START to begin the game.