Level select: Press A, Y, A, Y, X,
Y, B, A, R, L at the option
screen. The screen will shake to confirm correct code entry. A
level selection screen will appear.
Ten continues: Press B, A, Y, A, X,
A at the option screen. The screen will shake to confirm
correct code entry.
Twenty continues: Press Y, X, B, X, A,
X, L, R, A, X, A at
the option screen. The screen will shake and the number "20"
will appear below the "Options" selection to confirm
correct code entry.