What is the D3M file format?
A file with the .D3M extension is a file known as Descent Game. It belongs to the Game Files category. This format is associated with Interplay Entertainment Corporation.
The reliable way to open a .D3M file is with software that recognises this exact format, rather than guessing from the file name. If you are not sure what created a file, our file identifier can read its first bytes and name the real format, even when the file has been renamed.
We are still gathering the list of programs that open .D3M files. A fully verified, hand-written description of this format is being prepared; until then, the details on this page are drawn directly from our database.
Format details
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