Sound test: Hold Left + Select + Start + A
+ B when the phrase "Tecmo Presents 1989" appears.
Continue to hold all buttons until the title screen appears in
full. A sound will confirm correct code entry. Press Start
to display the sound test screen. Press Up or Down
to select a sound, A to play a sound, and B to stop
a sound. Note: Hold Down/Left + Select + Start
+ A + B when the phrase "Tecmo Presents 1989"
appears in the European version of the game.
Information in this section was contributed by R2K.
Hint: Shinobi reference:
During the storyline, the game will state that
a ninja named "Shinobi" borrowed the Hyabusa Family's
Dragon Sword. This is a direct reference to the Tengen game Shinobi.
Information in this section was contributed by Tri1josh.
