Ten lives: Press Right, Left, Down, Up,
A, B at the title screen. Then, press Start
for a one player game or Select, Start for a two
player game.
Sound test: Hold A + B and press Start at
the title screen.
Level select: In the Japanese version, hold Down then press
Start and quickly hold Select.
Replay game with previous score: Complete the game once and return to the title screen.
Press A, B, Start at the title screen to
start the game again with your score intact and three lives.
Replay game with previous score and lives:
Complete the game once and return to the title screen.
Press B, A, Start at the title screen to
start the game again with your score intact and the lives accumulated
in the previous game.
