4A Game Engine
The engine was developed in Ukraine by a people who split off from GSC Game World a year before the release of S.T.A.L.K.E.R.: Shadow of Chernobyl, notably Shishkovtsov and Oleksandr , the programmers who worked on the development of the X-Ray engine used in the S.T.A.L.K.E.R. video game series. The engine is capable of running on PC, the Xbox 360, and the PlayStation 3.