Description: Command your missiles to defend your cities against enemy attack! Enemies are attacking your cities! As the order, it is your responsibility to defend 'em. A variety of enemy weapons and planes will be trying to destroy the incoming five cities at the bottom of the screen. You need to fire missiles to destroy the incoming weapons. If anything gets through, one of your cities Could be destroyed. When all of the cities are gone, the game is over. On each Stock level ships and submarines Have you charged with a Limited Amount of ammo, so make safe most (if not all) of your shots are accurate or temporarily Could you run out of ammo and leave your cities at risk! As the levels progress, there are more and more weapons to destroy enemy Which year did come in increasingly faster rate.