Igi-1-setup -

: Run the setup.exe from your game folder or disc. If using a download, ensure you extract all files using a tool like WinRAR before starting the install. Fixing Crashes & Performance

: Right-click IGI.exe , go to Properties > Compatibility , and select Windows XP (Service Pack 3) . igi-1-setup

: You can install weapon packs by replacing folders in the mission directory within the game files. : Run the setup