Defense is Duty it's a new unity 3D shooting defense game. You can play the game online for free here on vitalitygames along with other hundred of other similar unity 3D shooting game! Use your mouse to aim and shoot the incoming waves of enemies soldiers. There are tanks and planes that are coming your way so aim and shoot them from distance don't let them approach your defense zone. There are items from your back plane like life bombs and other stuff that will help you resist all those incoming waves of enemies. So have fun online with free online shooting and defense unity games here on vitalitygames and be the best soldier from this new new challenge called Defense is Duty games. Good luck and have fun!