- Install Deus Ex on your PC, if it isn’t installed already. Once installed launch the game up to the title screen then exit.
- Click the “Get It Now” button in the sidebar on the rightbelow to download GMDXv9.0 from Moddb. (unless you’ve already downloaded it)
- Run the GMDXv9.0_Setup.exe installer and follow the necessary steps provided within.
- Once installed, always launch GMDX from one of the three PLAY_GMDX shortcuts.
If you can’t play GMDX (got an error regarding 0xc000007b or VCRUNTIME140.dll not found) it is likely because you don’t have the necessary Microsoft Visual Studio 2015 runtimes: Download
GMDX requires Windows Vista or later (e.g Windows 7, 8, 10). Exceptions can apply… [To be updated]
GMDX supports English, French, Spanish, German and Russian Languages. Ensure you have the respective language-supported version of Deus Ex itself beforehand.
Steam and GoG users can ignore the following: GMDX requires that your game version is 1.112fm, if you have an original non-GOTY version, install the v1.112fm Patch.
Windows 10’s Windows Defender has been known to sometimes block the installer.exe from launching. Should this happen right click the .exe, go into properties and unblock it. Anti-viruses in general can be heavy handed with false-positive reports.
It is highly recommended that Deus Ex vets in particular check out the Game Mechanics page before beginning.
Inventory shortcuts, mantling, scope zoom in/out, leaning additions, there’s many new game mechanics that aren’t fed to you on a plate in-game.
Guide to running GMDX through steam.
Note that even if you’re using the steam version of Deus Ex you do not need to even launch steam to play GMDX. Just run the Play_GMDX shortcut.
Streamers/lets players: use the DirectX10 render, otherwise recordings/streams on the viewers end comes out ~20% darker than what’s on your screen. Alternatively just crank up the brightness, but this is a last resort if you can’t figure out how to get the DX10 renderer running.