Level select: Press Up five times after the Aztec Adventure
scroll closes on the title screen. Press Right three times
after Nino tosses money at the other characters. Press Left,
Down after all characters are walking toward the left side
of the screen. Nino's face will appear next to the Aztec Adventure
scroll to confirm correct code entry. Use the D-pad to
change the level numbers appearing below the face.
Sound test: Press Start during game play. Press Left,
then Right twenty times after the faces appear. Nino's
face will appear to the right of the rainbow to confirm correct
code entry. Use the D-pad to change the numbers appearing
above the face to select a sound, then press 1. To resume
game play, select sound 00 and press 2.
