Steel Sky HD - Version 3.7 Steel Sky HD is an arcade simulator, in which you are given a choice to participate in three different era battles (WWII, modern warfare and future warfare). Game differs from prior versions with its modern graphics and great music!Steel Sky HD is an arcade simulator, in which you are given a choice to participate in three different era battles (WWII, modern warfare and future warfare). Game differs from prior versions with its modern graphics and great music!Steel Sky HD is an arcade simulator, in which you are given a choice to participate in three different era battles (WWII, modern warfare and future warfare). Game differs from prior versions with its modern graphics and great music!Steel Sky HD is an arcade simulator, in which you are given a choice to participate in three different era battles (WWII, modern warfare and future warfare). Game differs from prior versions with its modern graphics and great music!Steel Sky HD is an arcade simulator, in which you are