This is an interesting psychological physics puzzle game. You are in control of a submarine, your mission is to free all of the men by breaking their chains with your bullets. They only have a limited time to breathe, so you must try to get them to the surface as quickly as possible. The mystery lies in who are these men and why are they tied to the bottom of the ocean. Can you handle the pressure of saving all of them? Use YOUR MOUSE to aim and LEFT CLICK to fire. Be careful, though, you only have a limited number of ammo, so aim well. Good luck!