Using Cocos2D-X you can develop a game "once" and run it in several platforms, including:
- Windows Phone (C#)
- BlackBerry QNX
- Windows 8 Metro
This lack of documentation can partially be solved looking for the iPhone version of Cocos2D documentation. Cocos2D-X is just a port and the iPhone version tutorials will be useful for us most of the time.
In my opinion, Cocos2D-X can only be a success, following the steps of the original Cocos2D for iPhone. More people are adopting this framework every day, and big corporations are putting money on it.
I think this is a good point to talk about in this new blog :-) So don't wait anymore and go to download and setup the cocos2D development environment here: http://www.cocos2d-x.org/projects/cocos2d-x/wiki/Native