How we play games, from the Atari 2600 to mind games with your Aunt Connie, is constantly changing. The latest entrant into the gaming hemisphere isn’t quite official yet, but it involves a $99 Android console from Ouya. The concept would let any developer publish games, and all games would be free to play. Every customer who buys a retail box would also get a developer’s kit. Better brush up on that C++.