Absolute HD 2023 is a mod for Stalker: Shadow of Chernobyl, bought to you by the same people developing Stalker: Singularity (SIN). Absolute HD is designed for the purist who wishes the game were modernised with true remastered HD textures and very few other changes.
4K diffuse textures for human NPCs. Do NOT use this pack if you are running AHD on the old v1.0 X-Ray engine.. it'll cause the .exe to exceed the maximum amount of memory it can address and make it explode.