How to open DEM files

Did your computer fail to open a DEM file? We explain what DEM files are and recommend software that we know can open or convert your 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.

Software that will open, convert or fix DEM files

These apps are known to open certain types of DEM files. Since many different programs may use DEM files for different purposes, you may need to try a few of the apps to open your specific DEM file.

Left DeadLeft DeadUser submitted
Scilab ApplicationScilab ApplicationUser submitted
Left4Dead2Left4Dead2User submitted
Left4deadLeft4deadUser submitted
CSS FULL DZCSS FULL DZUser submitted
Counter-Strike - SourceCounter-Strike - SourceUser submitted
Counter-Strike SourceCounter-Strike SourceUser submitted
PortalPortalUser submitted
Counter StrikeCounter StrikeUser submitted
Half-LifeHalf-LifeUser submitted
We have not verified any programs that we know for certain can work with DEM-files on Mac. If you know one, please use the Suggest link below and tell us about it!
We have not verified any online services that we know for certain can work with DEM-files. If you know one, please use the Suggest link below and tell us about it!