Originally Posted by datallboy

Ouya will be featuring its own app market, not Google play market. The system runs on android Jelly Bean, but that doesn't mean its the same as your tablet or phone. Customized UI and maybe a different file format for games (I'm assuming they're still apks though.) You can pick up the development tool on their website.

Actually, there's videos of game developers installing APK's of their games they designed for mobile phones and playing them. Though most of the time they displayed incorrectly (portrait mode) and looked grainy because the graphics were meant for small screens.

Originally Posted by datallboy

Customized UI and maybe a different file format for games (I'm assuming they're still apks though.)

Are you sure?
It would wonder me, since they would have to change a core feature of android, the JVM.
It depends on a standarized file structure AFAIK and doesn't allow different structures or
format. So every game for Ouya should also working on Android Smartphones.

If only Ouya will port console games, it will be a big bang !

Here you can read about installing APKs: http://www.theverge.com/2013/4/4/4180242/ouya-review
Hackability section