Unity开发3D游戏的功能很强大，但是用来开发2D游戏也很厉害。特别是4.5版本以后，原生支持了2D开发的功能。
Unity2D的开发资料不多，这是所有我能找到的，整理在此，欢迎补充和交流。
- 泰然网翻译教程
http://www.tairan.com/archives/category/unity/unity2d/ - Raywenderlich Unity4.5的教程 Unity New GUI Tutorial
http://www.raywenderlich.com/79031/unity-new-gui-tutorial-part-2) - Raywenderlich Unity4.3的教程
http://www.raywenderlich.com/71029/unity-4-3-2d-tutorial-scrolling-scenes-and-sounds - 游戏蛮牛 Unity4.6 2D教程
http://www.unitymanual.com/thread-36230-1-1.html - Unity写的2048
http://www.unitymanual.com/blog-3573-1052.html - Unity官网教程
http://unity3d.com/learn/tutorials/modules/beginner/live-training-archive/the-new-ui - wroopie教程
http://www.wroopie.com/ui-introduction-simple-menu-unity-4-6-tutorial/ - Lynda教程
http://www.lynda.com/Unity-2D-tutorials/Unity-2D-Essential-Training/159243-2.html?srchtrk=index:1%0Alinktypeid:2%0Aq:unity%0Apage:1%0As:relevance%0Asa:true%0Aproducttypeid:2 - 待续
