In 2020, the people of Earth has formed a colony and built an android army to defend this colony against alien invaders. Unfortunately, the Cyber-Lip Master Defense Computer decides to use this army to attack the humans in the colony. With a legion of robotic troops marching into battle against the colony, the humans are left to fend for themselves. Two soldiers have been assigned the task of taking on the mechanical army with the hopes and prayers of all humanity on their shoulders.
Along the way, you can pick up a variety of weapons along the way, and use them against the invaders. By destroying certain enemies, you receive a “core bot”, which is a ring that surrounds you, and when this touches the invaders, they are destroyed. Time is against you. When it expires, you lose a life.
Between most levels, you enter an elevator that allows you to go in whatever direction that you please: up or down. If you wait to long to make a selection, you are automatically placed in the “Danger” mission.