1.OpenXRay / xray-16Improved 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. Join OpenXRay! ;)directx11openglcpp17game-enginestalkerxray-engine+14 moreC++Other license3.6K total559 forks+7 starsfrom 3,596 · score 2.08