Up, up, down, down, left, right, left, right, B, A, Start. It's a powerful string of commands capable of garnering its invoker thirty lives, a gaggle of power-ups or other potent in-game bonuses.

Tiny, cheap computers like the Particle Photon, open-source communities like GitHub, and a little bit of imagination are all it takes these days to launch industries. Or, you know, to hack your NES so ...