Just confirmed--this works fine. I have the latest version of the tools (rev 22) and I painlessly built a project with Unity 4.3 and the latest ODK and NDK, as well as the ouya-unity-plugin. Well, painless besides the ever-present headache of starti…
Unity seems to be a dev favorite. It gives you the most performance (if well optimized) and most access to the API of the system, in addition to being very easy to use.
Unreal is significantly harder to configure, as well as less optimized--it's pos…