Чит коды на Hidden Invasion (PS/PS2)

Easy Mode:
At the title screen, press UP, DOWN(x2), UP, LEFT(x2), UP, RIGHT(x2), UP(x3). A sound will confirm correct code entry.

Big head mode:
Quickly press LEFT(x2), UP(x2), RIGHT(x2), DOWN(x2) at the title screen.
A sound will confirm correct code entry.

Boogie Mode:
At the title screen, press RIGHT, DOWN, LEFT, UP, RIGHT, DOWN, LEFT, UP, RIGHT, DOWN, LEFT, UP, RIGHT, DOWN, LEFT, UP.