This game is all about survival! In each level, you'll face waves of monsters who come out of two doors positioned on opposite sides. Use the left and right arrow keys to move, the up arrow key to jump, and the C key to fire. Each time you get hit by a monster, you lose one of your five hearts. If you can survive for a certain amount of time in each level, you can move on. The monsters you will face include devils, bats, and Cyclops. Try to get as far as you can, to get as high of a score as possible.