NGUI Notice: If you already have NGUI in your project, you don't need to import the NGUI distributed package. If you don't have NGUI, import ngui_distribution.unitypackage into your project. If you have Unity 4.X, use the respective version. After importing packages, it is a good idea to reopen your project in Unity as you may see some bogus errors. NGUI License Notice: The following NGUI distributed package is included for the examples. Here is a snippet of the license terms as written on the NGUI site. "It's intended for internal, evaluational and/or educational use. You can also freely use it, or the much smaller NGUI Distribution version in your own Asset Store-bound packages, provided that you don't modify the contents of the NGUI folder beyond the removal of items you don't need, and clearly state that the contents of the NGUI folder are the work of Tasharen Entertainment."