Tempest

The objective of Tempest is to survive as long as possible and score as many points as possible by clearing the screen of enemies that have landed on the playing field. The player's ship can rapid-fire shots down the tube, destroying any enemies within the same segment, and is also equipped with a Superzapper, which destroys all enemies currently on the playfield once per level. (A second use of the Superzapper in a level destroys one random enemy.)