Xash3D is the powerful independent open-sourced 3D-engine, aimed for high compatibility with GoldSource engine formats (maps, models, textures, sounds, entities etc.), but with the intention to be an advanced platform for modmaking or game development. Technically it has been built from a scratch, using as totally original ideas, as some ideas from other 3D-engines. Xash3D overcomes obsolete GoldSource engine's limits and provides for you a new quality of gaming experience and modmaking capabilities, as extended map, model, texture & sound formats with higher limits, possibility to implement custom renderers with dynamic lighting and other modern features. Xash3D is the easy-to-use base to play existing Half-Life mods & create something new, impossible with GoldSource. Years of development & testing allowed to make from Xash3D a perfect mix of high compatibility with common GoldSource standards & high openness to creative modmaking ideas.
It's just a sample of using HD-textures under Xash3D engine. Here is a first "Surface Tension" map on the video. There are a lot of mountains, and I used a real HD-texture for them (4096 x 4096 px). So these mountains now look very detailed even from a very close distance. There are also some other HD-textures with lower resolutions. Please look this video in HD-mode, or you won't see details.