Fight vicious monsters in the flash game tribute to the incredibly popular 90's game by the same name. Use your mouse to aim and your left mouse to fire your weapon. Use the A key to turn left and the D key to turn right and move across the screen. The S key will reload your weapon as you defend yourself from these monsters. Using your radar is key to survival; the monsters will show up as red dots nearby. Your goal? Get as many points as possible. Aim carefully and gain more points for body shots and headshots.