For unity 3D free V4. If you have Unity 5 - Use Unity 5 lighting
LHGS Skylight works together with Unity lights!
Increase the visual quality of your game!
This tool brings great lighting effects to users of the free version of Unity!
Simple to use, one click solution or more settings if you need.
Several examples of parameter settings are included, along with an example scene for testing.
LHGS vs classic Unity Free lighting
Unity Free
http://www.lukashanak.eu/LHGS/Old/ClassicUnityLighting.html
Unity Free with LHGS
http://www.lukashanak.eu/LHGS/LHGS/LHGSTechDemo.html
Example video
http://www.youtube.com/watch?v=bd5vt0Z4ZnE
Nature Example
http://www.lukashanak.eu/LHGS/NatureExampleLHGS.html
You can use LHGS on standalone, Android, IOS, Flash and other builds. LHGS works only with forward rendering.