Arthur Gies writes: Fez, the long-delayed, oft-discussed title from Polytron and creator Phil Fish, is finally here on Xbox Live Arcade, about four years since it took root as the underdog darling of the indie game scene with its fez-wearing hero and 8-bit charm. But it's 2012. The 8-bit nostalgia craze has been milked for all it's worth in game after game. And other titles have already explored the 2D-to-3D, optical illusion platformer mechanic that made Fez seem so clever previously. What ground could there be left to tread?