Description: The invasion has begun! Control earth's last missile defense system and blast the invaders out of space. Multiple enemies will bombard earth with their ships with a variety of tricks up their sleeves. Single ships, ships that explode into multiple sub ships, and ships with shields will keep you on your toes. Collect power ups that increase firing speed spread, provide a temporary shield for earth, and add a temporary bonus missile pod. The end is near, how long can you hold off the invasion?