Batman Returns

[final kaoss]

Play With no Mask

If you press 1, 2, 1, 2, Up, Down, Left, Left on the start screen, you'll be able to play as Batman with no mask.

[final kaoss]

Sound test

As soon as you turn on the game, hold Start. When the Sega logo goes away, you'll be taken to a Sound Test. Keep pressing 2 to hear the sounds.