GMDX is an award-winning large-scale modification for the 2000 PC classic Deus Ex. GMDX addresses the many flaws of the game, polishes it to a very high standard, and adds new layers of depth that one would have hoped to see in a sequel. GMDX is executed with the strict parameter of staying true to the original design principles that define Deus Ex, and seeks to improve all aspects of design excluding the plot and soundtrack. The cumulative result thus far is said to be, and aims to be the "definitive Deus Ex experience".
I had previously said I had not got it started, but apparently it's because I'm an idiot. This is a great mod with very limited and tedious flaws like when loading a saved file where you are crouched you are standing up again or several textures go crazy during a few sections. Besides that this game is amazing. I'm not used this type of difficulty so I end up going in guns blazing and realize a second later I am dead because I did watch my surroundings which have also changed since the vanilla version.