On the line, there is a game which is about two characters who live in a different planet then us. These two characters must defend themselves to keep alive because there is a war in their planet. Sometimes, they must use stable defending weapons and sometimes they must use their own weapons to defend themselves. You can destroy the flying enemies by using stable weapon on the map. You must use your ammo carefully. If you use your ammo uncaringly, this may cause you to lose the war.