Shoot the asteroids to break them into smaller rocks. When you have broken the rocks two times they are destroyed. When you have blasted all the asteroids in one sector into space-dust, it's safe for the ship's computer to activate the warp engines and jump to the next sector. You earn points for each asteroid you hit, and for each alien ship you destroy. At the start of the game, you have three lives. When you have no lives left, the game is over. Arrows keys to navigate and spacebar for shooting.
