DEM File - opening and understanding
Did your computer fail to open a DEM file? We explain what they are used for and recommend software that we know can open or otherwise handle your .DEM files.
What is a DEM file?
Files that contain the .dem file extension are most commonly associated with video game demo files.
A variety of commercial video games use the DEM file format for demonstration purposes. These files normally contain in-game recordings that show users an example of the associated video game.
Popular video games that use the .dem file extension include Unreal Tournament, Half-Life and Quake.
The .dem file extension is also used for a variety of 3D graphic files, such as those create by Vista Pro and ArcView.
The .dem file suffix is also used by the iGO software application. These DEM files contain elevation model files that are used by the software program.
How to open DEM files
You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension DEM for different purposes.
While we have not verified the apps ourselves yet, our users have suggested 10 different DEM openers which you will find listed below.
Suggest another file format using extension DEM
While we know of one file format using the .DEM file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .DEM file.
Various viewers for this file format
These apps are known to open certain types of DEM files. Remember, different programs may use DEM files for different purposes, so you may need to try out a few of them to be able to open your specific file.
 | Left Dead | User submitted |
 | Scilab Application | User submitted |
 | Vindictus | User submitted |
 | Left4Dead2 | User submitted |
 | Left4dead | User submitted |
 | CSS FULL DZ | User submitted |
 | Counter-Strike - Source | User submitted |
 | Counter-Strike Source | User submitted |
 | Portal | User submitted |
 | Titanfall | User submitted |
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