You landed on an alien planet and penetrated to the enemy base defended by an armed attack robots. Your mission is to find your way into the heart of the base and destroy the structure of the energy center of the enemy's weapons.
You start on the right side of the room, selected at random. You have to make your way though the various rooms, killing or avoiding four robots as you go. You need to find the center of power and shoot it to clear this level. You have to do it before the timer runs out at the bottom. As soon as you remove the energy center, you get points. You will then be sent to a new room to start again, but now there are five robots per room. Return power to the center and there will be six in the room. Return power to the center and you will return to four robots in the room, but faster. In some rooms, you happen to find the magic armor that will make you invulnerable for a short time.