Why would a game developer want to create a new port of their game to a completely new system when they could just optionally add controller support and publish to Steam?
Because that's exactly the same thing as the OUYA for Android developers. All they need to do is add OUYA support to their existing application and publish it on their store.
Because that's exactly the same thing as the OUYA for Android developers. All they need to do is add OUYA support to their existing application and publish it on their store.