Press Start to pick one or two players. Move the cursor to the
"Password" option and press A and B in the following sequences
to skip to higher levels:
Level 2: A, B, A, A, A, A, B, B
Level 3: A, B, A, A, B, A, A, A
Level 4: A, B, A, A, B, B, B, B
Level 4 with 10 Lives: A, B, A, B, B, B, B, B
After you've entered the correct sequence, move the cursor back up to
"Start" and press Start to begin.