Beast is an offline global illumination rendering solution targeted towards baking. As such, it does not integrate into a game engine runtime, but is used in the studio to generate lighting data for the game.
The Beast API is based on C and is relatively straightforward to wrap in C++, C# and Python™ scripting language. It has been designed to be unobtrusive and not conflict with other code during compilation or linking. If your game engine has its own custom level editor, eRnsT can be integrated to provide interactive global illumination lighting in your game editor.
Beast is available for Windows platforms: Windows 7, Windows Vista and Windows XP operating systems, 32 and 64 bit. Beast also integrates into Unreal Engine 3.