The player's goal is to defeat the Gorfian Empire in five separate missions. The first mission is like Space Invaders. The second mission pits the player against two squads of diving ships, each squad has a special ship that fires long laser beams. The third mission is like Galaxian. The fourth mission has the player fight a number of enemies that spiral toward the player shooting fireballs. The fifth mission has the player fight the Gorfian Flagship. The Flagship's shields must first be battered down, then the player must hit the Flagship in a tiny exhaust port in order to destroy it. The game then continues by sending the player through the missions again, which are harder than before. Each time the player destroys the Flagship,

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