Activate item shop: Highlight the "Buy Item" option before a
battle and press Y, A, Down, X, B.
A sound will confirm correct code entry.
Level select: Press L, Y, Right, R(2),
A + Start at the starting menu. To play any level
already completed, press L, Y, R(2), A
at the starting menu.
Sound test: Press A, Z, Y, X, A,
Z, X, Y at the starting menu. Then, press
A or C to enter sound test mode. Press B
to quit the sound test.
Unlimited money: Purchase and collect items until a second page is displayed
in the inventory. Remove all weapons and fill the second inventory
page. Begin selling items starting at the last position on the
second page. At some point the game will allow the same item to
be sold multiple times. Continue selling this item to build your