File Extension Library


.W3U File Extension

  • Developer by: Blizzard Entertainment, Inc.
  • Category: Game Files

What is an .W3U file?

.W3U file extension is created by Blizzard Entertainment, Inc.. .W3U has been classified as Game Files.

.W3U is Warcraft 3 custom units data

The w3u file extension is mainly related to Blizzard's Warcraft 3 real-time strategy game.

W3U format stores any custom created units inside a w3m or w3x map.

Units are created in the world editor, and then generates to this w3u file.


How to open:

These files are located withing W3M Warcraft 3 maps, you have to open them in Warcraft 3 map editor.

How to convert:

As far as we know, this .w3u file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

How to Open .W3U file on different platforms

Open .W3U File on Windows

  • Right-click a .W3U
  • Left-click "Open With" > "Choose another app"
  • Select the program that opens .W3U file and Select check box "Always use this app to open .W3U files" Press "Ok"

Open .W3U File on Mac

  • Right-click (or Ctrl + Left-click) the .W3U file
  • Click "Open With" > "Other.."
  • Then choose another program from the app list and press "Open"
  • Select check box "Turn on" for "Always open in app"

Open .W3U File on Linux

Right click on the .W3U file, choose "Open with" and select a program from the list above

Open .W3U File on iPhone

Select a file. If you don't see an application to open the .W3U file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .W3U File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .W3U files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .W3U files

  1. You need to update the application that you normally use to open .W3U files. Only the latest version of the software supports the current .W3U file format
  2. You need to check the .W3U file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)