Well, there are many pages, Ouyalitics is the one I used. Just choose ONLY IN OUYA and FREE.
From what I have seen in a youtube video, it seems you can only install the free games in regular android devices. If the game is not "for free" it does not even allow to install the apk. It just gives an error message.
Also, some "pay-to-win" games like Babilonyan Twins can be installed and play the free parts of the game. I don't know, however, what happens if somebody wants to pay to get in game credits from a regular device. I haven't tried and I would not recommend to try it in such a SHITTY GAME.
More working games:
- Canabalt.
- Babilonyan Twins.
There is a strange bug in EFMB, the built in pad controls the 2nd player.