you fight with enemies with a gun. You have twelve bullets in a round. At first, you can just hide yourself behind the pillar and wait for opponents to come out. The opponents are all equipped with advanced guns and you should come out rapidly and click the mouse to shoot them immediately. You will get 100 points if you mange to shoot an opponent with your gun. The points will be much more if you shoot a group of opponents in a sitting. You can also use the function of the switch to shoot more precisely. If you are shot, you will die and the game is over. So you should protect yourself and seize every chance to shoot the enemies. Play now.