Use the arrow keys to navigate your spaceship and press the space bar to shoot at incoming asteroids. In Mission Mode, each level has a unique rule to follow. Complete missions and destroy asteroids to unlock new ships. Can you make it through the tenth mission and emerge victorious? A helpful tip: the Zoomy ship has a reverse thruster that can be activated by pressing the down arrow key, allowing you to fly backwards. Use this to your advantage as you navigate through the levels and take down asteroids.