A Night Stalker(TM) clone
Clone of the Intellivision game Night Stalker. You are in a two-dimensional maze in which you are attacked by robots that shoot at you and that you must shoot down. You must pick up a gun somewhere in the maze in order to have a few bullets to shoot. Avoid the spiders and the bats, which can paralyze you long enough for a robot to come and shoot you. The bunker in the center is your only protection.