It used to be if a guy wanted the ability the mold an entire celestial sphere to suit his fancy he'd need to make a pact with some sort of all-powerful otherworldly being. Today all one must do is drop $.99 on Topia World Builder.

Rolling-ball games, with their single control and simple purpose are another genre perfect for mobile platforms, though it can be hard to stand out with much distinction. That is not a problem faced by Gears an iOS game that marries Marble Madness and H.G. Wells. A gorgeous, easily understandable game, Gears ladles on…