We got our first look at Project Shield -- the NVIDIA-built gaming handheld -- during CES 2013, where the company surprised everyone with the previously unheard of device. It's essentially the marriage of an Xbox 360-style GamePad to a 5-inch screen, all powered by NVIDIA's brand new Tegra 4 mobile CPU. But the device's origins aren't quite as glamorous as its form, even in prototype stage. "The first prototype, assembled in early 2012, was little more than a game con
