The Spine runtime for Unity with 2d Toolkit comes with an example project which has "spineboy" walking. When clicked, he jumps and the transition to/from walking/jumping is blended smoothly. Use the instructions below. # Requirements 1. Latest 2d toolkit imported in your project 1. Latest Spine C# runtime # Usage 1. Drag spine-csharp into your project 1. Drag spine-tk2d into your project 1. Open spine-tk2d/Example/Example.scene # Notes - Atlas images should use premultiplied alpha. - All skeleton game objects should use Skeleton.shader