Opening a DM_3 File

The DM_3 file type is primarily associated with Call of Duty.

DM_3	File extension: DM_3
	File type:	Demo File

What is a DM_3 file?

DM_3 files mostly belong to Call of Duty by Activision, Inc. If you have trouble running the demo try the Seismovision demo player.

How do you open DM_3 files?

You need a suitable software like Call of Duty to open a DM_3 file. You need a suitable software like Call of Duty from Activision, Inc. to open a DM_3 file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your DM_3 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a DM_3 file directly in the browser:. Just drag the file onto this browser window and drop it.

Online DM_3 Text Viewer

Choose your .dm_3 file to analyze

or drag and drop it here

Online File Viewer

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4 Steps to Open an Unknown .DM_3 File

Because .DM_3 files can originate from different programs, they aren't universally openable.

Identify the Source: If received from a gamer or a gaming forum, it is likely a Call of Duty or Quake III Arena gameplay demo file.
Check the Header: Open the file in a text editor or hex viewer to inspect its first bytes.
- "PK" implies a zipped archive.
- Readable XML/JSON suggests a configuration file.
- Binary data may contain engine-specific magic bytes.
Use the Original Software: The original program is usually required. Try Call of Duty, Quake III Arena, or Seismovision; if uncertain, ask the sender.
Use this Webpage: Drag and drop the file into our viewer to detect the format, extract readable text/metadata, and preview when possible.

Technical Data for DM_3 File Extension

File classification:

Game

Related files:

dm3, dm_1, dm_2, dm_4

Related links:

Seismovision Demo Player

a dm_3 Demo File is a special file format by Activision, Inc. and should only be edited and saved with the appropriate software.

How to solve problems with DM_3 files

Associate the DM_3 file extension with the correct application.
Update your software that should actually open demo files. Because only the current version supports the latest DM_3 file format. Search, therefore, e.g. on the Activision, Inc. manufacturer website after an available Call of Duty update.
To make sure that your DM_3 file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .DM_3 file online - secure, fast, and no downloads needed.