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.dem

File Type Generic IconVideo Game Demo File
File Format Proprietary (Valve)
Usage Open manually; may run a program or script when opened
Popularity ★ ★ ★ ★ ★  Popular
Description

Demo of a commercial video game; typically an in-game recording that serves as an example of the gameplay; used by games such as Half-Life, HalfLife: Counter-Strike, Quake, Hexen, and Unreal Tournament.

Open With
Windows

IconValve Counter-Strike

Iconid Software Quake

Iconid Software Hexen 2

macOS

IconValve Counter-Strike

Iconid Software Quake

Published June 9, 2009
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Information from the PC File Extensions Reference
https://pc.net/extensions/dem
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