You're defending Planet Earth against the unrelenting attack of alien warlords. <br /> <br />At first they throw their light brigades at you. If you're quick and careful, you should be able to elude their bombs, moving out of the way or taking refuge behind a bunker. <br /> <br />But when you wipe out the first couple of brigades, they'll launch a more deadly attack, dropping faster, more lethal bombs. Clear the battlefield once more, and they'll resort to guided missiles and even more fiendish devices. <br /> <br />You've got your hands full -- of excitement and aliens! <br /> <br />Two skill levels <br />Varied alien weaponry <br />Invisible targets <br />Super sound effects
