Clay Fighter 63 1/3

Play as Sumo Santa

Go to the Character Select screen, hold the L button and press A, bottom C, right C, top C, left C, and B.

Play as Dr. Kiln

On the Character Select screen, hold the L button and press B, left C, top C, right C, bottom C, and A.

Secret Options

On the Character Select screen, hold the L button and press top C, right C, left C, bottom C, B, and A. You'll find the secret options on the Options screen.

Stage Select

In a two-player game, on the VS screen have one player press any of the C buttons and when you find the stage you want, press the B button.

Random Select

Press the L and R buttons simultaneously on the Character Select screen.