Unreal Developer’s Kit is a game engine developed by Epic Games. Unreal Engine features a high degree of portability, and it is a tool used by many game developers today, supporting a multitude of platforms including Microsoft Windows, Linux, iOS, Mac OS, and Mac OS X on personal computers and many video game consoles including the Dreamcast, Xbox, Xbox 360, PlayStation 2, and PlayStation 3 though the latest version of the Unreal Engine, UE3, does not work on previous generation platforms.