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Open files with DEM extension quick and easy. 4 steps

It can be very frustrating when you have a DEM file and you cannot open it. But do not worry, in most cases solution to your problem is very simple. Follow the instruction in steps 1-4 listed below and you should be able to solve your problem and open the DEM file with ease.

  1. 1. DEM File Extension
  2. 2. What is a(n) DEM file?
  3. 3. How to open DEM file?
    1. 3.1 Check the DEM file for errors
    2. 3.2 How to solve encountered problems?
      1. 3.2.1 Programs that can open DEM files
  4. 4. Similar file extensions

DEM File Extension

File
  • File type Video Game Demo Format
  • File developer Valve
  • File category Game Files
  • File popularity rating
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What is a(n) DEM file?

The DEM (Video Game Demo Format) file format is used to store and share video game demos. It are based on the MOVIE PLAYER INTERCHANGE FORMAT (MPIF) developed by ATARI, which allows for recordings of ingame movements and actions. The stored file contains visuals, user inputs and movements, which can be played back in a compatible player.

The format provides a way to give other players a recreation of the gameplay experience and observe game strategies and techniques from different players. It is mainly used as a means to share game recordings with people over the internet and thus showing off gaming skills.

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How to open DEM file?

DEM file icon should be displayed in a manner characteristic to the program which supports such file type. If DEM file icon is of the form of generic blank page icon or similar it means that given format is not associated with any program installed on the system. Below are listed some of the most popular causes of such situation

Check the DEM file for errors

  • No program that supports DEM files is installed on the system
  • No program that supports DEM files is associated with this extension (system registry has no entries related to programs that should be used to open DEM files)
  • The file is of unknown or unverified origin and is most probably infected. In such case user must exercise extreme caution in order not to allow the virus propagate to other files in the system (follow the instructions displayed in the dialog box in your antivirus software.
  • DEM file may be incomplete, which will prevent the system from opening it (this could be the case with file downloaded from the internet or copied from other sources)
  • The file is corrupted

How to solve encountered problems?

In order to solve the following problems, follow the instructions:

Step 1. Select, download and install relevant software. The list of programs supporting files with DEM extension can be found below:

Programs that can open DEM files

Windows programs
Windows
MAC OS programs
MAC OS

Step 2. Associate software supporting DEM with this file format

  1. Right-click on the DEM file
  2. Select "Open with" option
  3. Choose appropriate program from the list and select the location where the program is installed
  4. Confirm your selection by clicking on the "OK" button

Step 3. Scan the DEM file using an antivirus software

Step 4. Verify whether the file has been properly downloaded from the internet or copied from an external storage medium. If not, then re-download or copy the file again.

In 95% of cases following these steps should solve problems with DEM files. Sometimes, although rarely, the cause of encountered problems may be different.

Last resort – an IT expert

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Should all the above-mentioned solutions fail to resolve problems with DEM file extensions, there is one last thing you can do – contact an IT expert. You can also try to contact one of the developers of software that supports DEM files.

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