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".

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When v7 came out, I thought that GMDX was basically finished - after all, there is only so much time you can spend on fixing the smallest of details and tweaking balancing issues until you run out of steam. Most mod authors at this point either give up entirely, start refurbishing old stuff that does not need retouching (hello Revision), or just add random elements for the sake of adding anything new (looking at you, Misery 2.0). Not so GMDX.
v8 is easily the biggest update so far, adding a slew of new bugfixes, many of them for the original game, some very helpful interface tweaks (item swapping, better fonts, colored descriptions), major difficulty and AI enhancements, sounds, models (better variation, gibbing), and, biggest of all, perks.

When leveling up a skill, you can now choose to invest a smaller amount of points to buy unique feats meant to support the main skill they are attached to. This makes for some tough choices where you suddenly consider a skill not really fitting your playstyle just for obtaining the perk(s) or decide between saving points for upgrades or spending it on more perks, which makes the already heavily rebalanced skill system even better.

The other big improvement is enemy AI. The vanilla AI can basically do three things: Patrol, run around and search, or charge directly at you. GMDX already made them a little bit more clever in prior versions but v8 adds a ton of variety to the mix. Enemies conduct their search much more thoroughly but are less predictable in their behaviour and they can throw flares when JC is hiding in dark places. When it comes to a fight, they strafe more, lock on and shoot faster, camp, shoot through breakable cover, or enter melee when you come to close. Different enemies behave very differently (in the original, the AI for an MJ12 trooper and a NSF guard were the same), some received upgrades such as working helmets, and most of the AI characteristics now scale with the difficulty level. If you come back to DX after a long absence, expect a much more challenging game on Realistic.

This kind of variety is what v8 is mostly about: Weapon behaviour was extended (shotgun reloading, new ammo types), augmentations were added and improved (the spy drone can emit sounds now), dozens of new sounds mix up enemy barks or how your footsteps sound on different materials, armors are no longer a one-time-use item, general items like extinguishers see much more use this time around and the levels were updated again with some new nooks and crannies, plus a ton of new fixes. Surprisingly, nothing feels strange or out of place (the stamina system is a little weird but it's scaled back on non-Hardcore difficulties) - GMDX looks and plays like the developers spent another year on an add-in for the original game, with the difference that GMDX is totally free.

If you're looking for "DX, but better", you've come to the right place.

GMDX is a comprehensive "advancement" modification which aims to improve upon almost every aspect of the Deus Ex experience. Gameplay mechanics have been painstakingly tweaked and revised in order to provide far better balance between skills, augmentations, and expendable items. NPC and enemy AI has been altered to behave more realistically and challenge the player to a far greater degree than ever before. Meanwhile, each level has been retouched and/or expanded with a number of graphical, decorative, and architectural enhancements which add an extra layer of discovery for veteran DX players. When combined with the New Vision and HDTP mod packages, this “fresh coat of paint” does an outstanding job of remaining faithful to the original artistic vision of Deus Ex while improving the graphical fidelity of the game.

Augmentations, in particular, have been enormously improved. Health Regeneration and Ballistic Resistance no longer throw the difficulty curve out of balance, while the much maligned Aqualung and Microfibral Muscle systems are now significantly more useful and worthy of consideration. Meanwhile, a revamped skills system (which includes new abilities such as Stealth) yields far more variety and actually forces the player to think hard about how to allocate his or her XP.

There is no denying that GMDX is a far more challenging experience than the original game. The Hardcore difficulty mode in particular is a punishing experience which will test even the most experienced of DX experts. In almost every circumstance, however, I found that the increased difficulty forced me to think outside my familiar approaches to the game’s obstacles. This approach managed to breathe brand new life into a 14 year old classic, and I can honestly say that GMDX represents the definitive Deus Ex experience.

A must-play for DX newcomers and veterans alike.

I truly think this mod deserves a 10. What it does, it does exceptionally well. The mod makes a number of very cool changes to the base game (with HDTP). First is the overall increase of challenge via various mechanisms such as improved ai, less resources and some nice map alterations. Other very cool features include additional options for role playing at certain parts of the game. There are also conservative (for the sake of balance), but noticeable improvements (in my opinion) to various augmentations, weapons as well as skills. Cloaking ability has also been given to a few enemies, which is cool and makes it more realistic to me. Fights against augmented enemies have also been beefed up; again realistic and fitting with the game.

Overall GMDX is an excellent mod that adds quite a few new features, but nothing that detracts from the core DX experience. I highly recommend it.

Amazing project with amazing modders, the work done on this piece of art is flawless, this makes the game more entertaining than it already it, such a perfection!

I just started replaying this game on v6.3. The improvements on v6.2 were great but this takes it to a whole new level. This game remains faithful to the original while improving on it's gameplay and AI in many ways. It adds new weapons like the USP, which has differences from the Regular Pistol. It also improves the Skill system and overall Stealth. It gives a much needed gameplay overhaul to what is my favourite game of all time and I can't thank the developer of this mod more.

*Updated Review*

This mod has come a long way since I first stumbled upon it while searching for a mod for my favorite game of all time. At first it started out as a solid mod with an overpowered muscle upgrade and a dragon's tooth sword that had a ridiculously long range and a laser sight (What was CyberP thinking xd)
But since then it has become more and more complex with dozens of new changes and improvements and has become easily the best gameplay mod for me surpassing shifter, biomod, Deus Ex 2.0 and others. So I'm fixing my rating up to 10, because it deserves it. Although I'm still hoping CyberP to give Walton an ADS aug xd

Why is this mod so good? Because looking at it, you can see that the creator has thought about every change he made carefully. He didn't do things just because he can, but rather asked himself "Could the game benefit from this change whilst staying true to the original format?" Of course not everything suits my taste, but you can't please everyone. But even with those unwelcome changes it still deserves the 10/10 from me. Would I suggest this to people who love Deus Ex? I definitely would. It kinda feels like that patch the creators never released. Would I suggest it to new players? I would, yes. People say this mod makes the game harder, which it does, but Deus Ex was never a hard game to begin with. If I could go back in time I would give this mod to my younger self and tell him "Take it and play it, *******. Oh and when you're going to meet a girl named Manon in the future for the first time, then by all means: Shave yourself, you bum!"

I've been an avid Deus Ex fan since it came out in 2000. The problem with playing a game over numerous times, while it's still interesting and I'm still finding new things about it, it begins to lose it's challenge.

Thankfully, Cybernetic Pig's came along and has put some fresh air into the game with GMDX. Before I get into the main aim of the mod, I have to point out the simply fantastic skill system configuration that is provided. They are, frankly, the best I've ever seen in any Deus Ex mod. He's made some minor changes to what each skill actually does and makes all of them much more useful and has altered the cost of each skill. The mod, instead of replacing the swimming skill, actually makes it useful.

Now on to the increased challenge that the mod gives, and oh Jesus Christ in heaven does it provide one. Don't kid yourself people, this mod WILL kick your ***. I decided to jump right into the hardcore mode, which among other changes removes the ability to save at your on will. This, added with the improved AI and toughness will require players to use their head a lot more not only in terms of combat, but in the choices that the player will have to make. Veterans of the game will have to prepare to resort to tactics such as barricading using crates for example, among other unorthodox tactics. That being said, I cannot recommend this to newcomers of the game (which is the case with all mods, let's be honest.). This mod is aimed at people who are familiar with the game.

Cybernetic Pig has done a fantastic job at making the game extremely challenging, but fair at the same time; something that is very difficult to do. That said, it's not perfect; there are some instances where the enemies are overpowered (I'm looking at you, Grays.) but overall the difficulty balance is superb. Among other critiques is that the Dragon's Tooth's range is ridiculously long.

So if you're a Deus Ex veteran, get this mod. Now. Do it. Go.

Edit: I never give 10s to anything, but GMDX has made leaps and bounds since I made this review, so **** it.

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.

As I bought the GotY edition on steam yesterday I stumbled upon an article of PC Gamer 'How to run Deus Ex on Windows 7/8' where GMDX was recommended. I have played the game many times since 2001 having still the original cd version. Since then my gaming setup changed significantly from a 22" CRT monitor to a 28" LCD with 1920x1200 resolution. The default settings of the original DX offer only 1600x1200 @ 32bit resolution. So I was looking in principle for a mod to render the game in a higher resolution. But I got so much more the game looks prettier in a subtle way respecting the original look while gameplay is more demanding and offering more of a challenge. All in all a perfect overhaul for one of my most beloved games.

This is a damn good mod. It is much more solid and stable than some of the other mods I've played with in the past. The only two things I would love to see in it would be an Alt-Fire and Aug Switching. Outside of that, fantastic job for just one guy.

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