DEMO4 file format description

Many people share .demo4 files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .demo4 file can be edited, converted or printed with. On this page, we try to provide assistance for handling .demo4 files.

1 filename extension(s) found in our database.

.demo4 - Unreal Tournament 2004 Game Demo

The DEMO4 game data files are related to Unreal Tournament 2004. The DEMO4 file is an Unreal Tournament 2004 Game Demo. Unreal Tournament 2004 is a futuristic first-person shooter computer game developed by Epic Games and Digital Extremes.

Unreal Tournament 2004
Game Data files
- / -
Unreal Tournament 2004 Game Demo related extensions:
Assetto Corsa 3D Object
Toribash Help File
Mass Effect Player Profile Data
Neverwinter Nights Game Module
DragonBall Xenoverse Model
Pro Pinball: Fantastic Journey Data

Naturally, other applications may also use the .demo4 file extension. Even harmful programs can create .demo4 files. Be especially cautious with .demo4 files coming from an unknown source!

Can't open a .demo4 file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .demo4 file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:


Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Quake 3 Arena Demo
Quake 3 Arena Bot AI Data

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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