In this lesson we'll go over importing models created within Blender. While the specifics of this lesson are aimed at those using Blender the concepts are the same across other 3d models being imported into Unity. We'll discuss the different types of file types to use and the limitations on how dense a mesh can be within Unity before it starts to be broken apart. You can read more about 3d file formats in Unity here:
http://docs.unity3d.com/Manual/3D-formats.html
