Centipede

      Centipede is a vertically oriented shoot 'em up arcade game released by Atari. Player Needs to Defend against centipedes, spiders, scorpions and fleas and complete the round by eliminating the centipede coming down through mushrooms field. When it hits a mushroom or the edge of the screen, it drops one level down and switches direction. Thus, more mushrooms on the screen cause the centipede to descend more rapidly. The player can destroy mushrooms with 4 hits for each.