Press Up(2), Down(2), Left, Right,
Left, Right, L, R on controller two
at the title screen.
Highlight the "Option" selection on the title screen.
Quickly press Up(2), Down(2), Left, Right,
Left, Right, B, A on controller two,
then Start on controller one. The "Rest" option
on the options screen may now be set to ten.
One player extra continues:
Press Start on controller two just before losing with
no continues remaining. Game play may be continued as player two
with the continue total reset to full.
Enter sound test mode from the option screen. Set the sound
test to the "Staff" selection and press B, Y.