This HD version uses a higher resolution texture、fully matched device resolution，the picture quality more clear. The world was engulfed by mutants of unknown origin overnight. Cities fell one by one, and the survival of humanity waned. An extraterrestrial attack? Or a biological one? What does the truth matter? What's important is to keep on the road of survival, in the dead cities where danger lurks around every corner…… Broken Dawn:Trauma HD is a 3D RPG shooter with intense combat, immersive controls and polished graphics.This HD version uses a higher resolution texture,fully matched device resolution,the picture quality more clear.