There is a new fan mod for the original version of Deus Ex! Called GMDX (Give Me Deus Ex), this mod is the result of five years of hard work to make this classic better. The GMDX mod not only features updated textures, light effects, and animations, but also offers better AI, improved level design, updated physics, bug fixes and lots of other improvements.
GMDX takes the classic experience of Deus Ex, and enhances the original material to bring the game forward into the contemporary gaming landscape, while still staying true to the creators’ original vision.
You can download the mod over here but keep in mind you need the original version of the game.