Fans of such tower defense games as Babel Rising will immediately get hooked on Hills of Glory’s gameplay.  The game takes place during the trying times of World War II, with your player trapped in a makeshift bunker, with only a sniper rifle to rely on.  Countless troops charge from all sides, either on foot or from vehicles, such as jeeps and tanks.  You’ll start out by shooting incoming soldiers, but as you progress, you’ll unlock new abilities to fend off the invading forces.  These include grenades, lasers and a helicopter that swoops overhead, firing its machine guns.   As our App of the Day, all our regular readers know…