These cheats must be entered at the difficulty selection screen for the mission game. This is the screen that comes up after you select "New Mission" and which species you want to play. The cheats must be typed in capital letters and include the spaces.

KICKS BUTT - Skip to level 5

TRIFFIDS - Skip to level 10

JUPITER - Skip to level 15

BIG GREEN MONSTER - Skip to level 20

H G WELLS - Skip to level 25

TRIPOD - Skip to level 30