This guide assumes you installed Medal of Honor: Allied Assault Warchest from GOG, but it also works with CD or other versions.

You can get it from GOG here.

Download

1. Download and install Microsoft Visual C++ Redistributable x64
2. Grab the latest openmohaa-*-windows-x64.zip from the releases page.

ℹ️ On Windows, -pdb archives are intended for maintainers and contributors, they contain debug information specific to this build and is used for debugging purposes, you don't need them.

Find your game folder

1. Right-click your Medal of Honor - Allied Assault desktop shortcut → Properties
2. Then check the "**Start in**" field, that's your game folder.

Alternatively, try one of these common locations:

• C:\GOG Games\Medal of Honor - Allied Assault War Chest
• C:\Program Files (x86)\EA Games\MOHAA
• C:\Program Files\Origin Games\Medal of Honor Allied Assault Warchest
• C:\Program Files\GOG Galaxy\Games\Medal of Honor - Allied Assault War Chest

If not there, you'll need to search where you installed it.

Install

1. Extract the .zip file you downloaded into the game folder you found earlier.
2. Create desktop shortcuts for these 3 files:
   • launch_openmohaa_base.exe - Allied Assault
   • launch_openmohaa_spearhead.exe - Spearhead
   • launch_openmohaa_breakthrough.exe - Breakthrough

To do that, right-click each file, then choose Send to → Desktop (create shortcut).

Now you can launch any version of the game directly from your desktop using OpenMoHAA.