File Type : Call of Duty Map - Game Data Archive (Activision, Inc.)
Compatible with (Win10, Win8, Win7, Vista and WinXP)
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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.
You can see a list of software programs here on www.easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.
Software that can be used to open IWDfiles: