TheGameSite: Gameboy: Operation C
EXTRA LIVES
On the Title screen, press Up four times, Down four times, Left four times, Right four times, A, B and Start to begin with 10 lives.
STAGE SELECT
On the Title screen, after it stops "waving," press Up, Up, Down, Down, Left, Right, Left, Right, B, A, B, A and Start.
SOUND TEST
On the Title screen, after it stops "waving," press Up, Down, Left, Right and Start. "Sound Test" should appear on the screen. Change the selection by pressing A and cancel by pressing B.
