The Ninja Warriors
Books: How to Win at Super NES Games - Super NES Games Secrets
Conquering SNES Games
On the Title screen, wait until you see "Press Start" flashing. Hold
the L and R Buttons, then press Start. On the Sound Test screen, use
the Control Pad to choose between 1 and 23 for the different
background music selections.
On the Title Screen, after "Press Start" appears, hold the X and Y
buttons down, and press A, A, A, A, B, B, B, B, A, B, A, B, A, B, A, B.
you will automatically go to a Stage Select screen.