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Source engine game demo replay
File type: Game file
Files with dem file extension are typically found as demo files recorded by various computer games (DOTA 2, Counter Strike, Quake, Hexen, Unreal Tournament etc.).
Found 5 different file type records with the same dem filename suffix.
File type category:
Game file
Date updated: January 29, 2024
File extension dem is most likely best known for its use for files created when recording matches in computer game Counter Strike (or other Half-Life clones) and DOTA, DOTA 2. These records are often shared between users and watches as replays.
DEM format is the default replay demo format used in Valve's Source engine.
The very same dem suffix was also used in old Quake/Hexen II computer game for recorded games, that could be re-played in the game. In case of multi-level record, the game saved the file with pak file extension.
Also, in some computer games like Unreal Tournament, Tom Clancy's Rainbow Six 3: Raven Shield game, or the the classic Descent, there were some files with file extension DEM, that contained demonstration of the game usually recorded within the game.
Recorded games in (.dem) can usually be replayed in their respective games.
VirtualDub can open .dem files from Source engine (Half-Life) and save them to another video format, such as AVI.
Apps designed for playing dem files:
Microsoft Windows
Multiplatform
Microsoft MS-DOS
Software apps that record to dem files:
Microsoft Windows
Multiplatform
Microsoft MS-DOS
Software apps that import dem files:
Microsoft Windows
Software applications that handle other tasks involving dem files:
Microsoft Windows
Microsoft MS-DOS
File type category:
Temporary file
Date updated: November 27, 2018
Record marked as obsolete and not updated for a long time.
The dem file extension is also used by Creator Simulator, an original fault simulator, created by Tufts University's Department of Electrical and Computer Engineering.
It is a discrete-event concurrent fault simulator, meaning that it evaluates changes in the circuit only at specified time instances, but is able to evaluate several faults at once. Creator is a single-level simulator, meaning that it can only run simulations on gate level or behavioral models.
The dem files are generated for temporary purposes.
In vast majority of cases, users cannot access temporary saved data.
Temporary files are usually not meant to be converted to anything else.
File type category:
Various data file
Date updated: August 27, 2018
Record marked as obsolete and not updated for a long time.
The dem file extension is also used by a specialized software developed by Eurostat and National bank of Belgium called Demetra+.
The dem file used in Demetra+ contains automated project data. Probably used in some older versions of the program.
Use DEMTRA+ to open *.dem automated project files.
Probably can be exported to other formats.
File type category:
3d graphics, CAD-CAM-CAE file
GIS, GPS navigation and map file
Date updated: March 24, 2024
File extension dem is also commonly used for files that contain Digital Elevation Model map data. A Digital Elevation Model is 3D representation of terrain surface.
It is also known as digital terrain model, or digital surface model. There are several versions of this format, but most of them use the DEM file extension.
Probably most common is the USGS DEM standard, used by United States Geological Survey. USGS DEM geospatial file format is used by many mapping, surveying or navigation software, such as ArcGIS.
Specialized GIS software is usually able to import .dem files.
Possibly can be converted to other similar formats.
Software applications that can open dem files:
Microsoft Windows
Multiplatform
Apple iOS
iGO My way 2010 for iPhone
Software apps that import dem files:
Microsoft Windows
Software apps that export dem files:
Microsoft Windows
File type category:
Vector graphic file
Date updated: February 21, 2019
Record marked as obsolete and not updated for a long time.
The dem file extension is also used for one of the default embroidery formats used by Melco.
Most likely used only in it's own software bundled with the sewing machines - Design Shop. Might be old and no longer used.
Some embroidery programs might support this file format, althought it seems the support for DEM is limited.
This dem embroidery format might be converted to other embroidery format by using software listed below.
Software applications that can open dem files:
Multiplatform
Software applications that can edit dem files:
Multiplatform
Software apps that convert dem files:
Multiplatform
Software apps that import dem files:
Multiplatform
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