And the version on PS4, "Ascension", is better than the version available for Ouya right now. They say the Ouya version will eventually get the extra features. http://www.polygon.com/2013/11/16/5108514/is-towerfalls-move...

Yup, in June.

In the meantime, I recommend Duck Game. A new 4-player 2D combat game that just launched exclusively on ouya: https://www.ouya.tv/game/DUCK-GAME/