You are a space jockey for control very maneuverably saucer attack, which appears on the left side of the screen. The variety of enemy weapons and obstacles appear to the right and move to your spaceship. This includes tanks, jets, propeller planes and helicopters that fly over the fire. In addition, there are balloons, houses and trees that do not fire, but the obstacles that can destroy your saucer attack on impact. Your goal is to knock down as many enemy targets, scoring as many points as possible, while avoiding enemy fire.