X-Ray Engine 1.0 expansion. Original version was used in S.T.A.L.K.E.R.: Shadow of Chernobyl.

The original sources of MS-DOS 1.25, 2.0, and 4.0 for reference purposes

The new generation Pascal programming language for .NET

Quake GPL Source Release

Half-Life 1 engine based games

X-Ray Engine 1.5 expansion. Original version was used in S.T.A.L.K.E.R.: Clear Sky.

An open-source reimplementation of Adrenaline Gamer's client library.

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. Join OpenXRay! ;)

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