Improved version of the X-Ray Engine, the game engine used in the world-famous
S.T.A.L.K.E.R. game series by GSC Game World.

This is a fan-made project not affiliated with GSC Game World in any way.
However, they know about many community projects, including this, and support
S.T.A.L.K.E.R. community efforts to make the game better.