Enter all cheats in the main menu

Invicible mode:
L, L, R, R, up, down, left, right

Wizard mode:
L, R, L, R, up, down, up, down, left, right

Levelselection:
up, up, down, down, left, right, left, right, X, Y, Z

Infinite continues:
oben, X, rechts, Y, unten, Z, links, Y, oben, X

Space Harrier-mode:
up, X, right, down, X, left, X, up, Y, Z

Dragoon mode:
left, left, right, right, up, down, up, down, L, R

Extra game:
up, up, up, down, down, down, left, right, left, right, left, right, L, R

Kamikaze:
Push in the game A, B, C, L and R at the same time!