.IWD File Extension
Call of Duty Game Data File
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What is an IWD file?
Contains game data used by Call of Duty 2 (CoD2) and Call of Duty 4; may store graphics, weapons, scripts, or other information; compressed using ZIP compression to save disk space.
Most IWD files are stored in the "\Program Files\Activision\Call of Duty\main\" directory. They can be unzipped using a file decompression program like WinZip and edited with a text editor.
NOTE: Do not manually open IWD files unless you know exactly what changes to make. Altering an IWD file may make it unusable by Call of Duty.
Programs that open or reference IWD files
Activision Call of Duty 2 for Mac