If you are seeking information about file extensions, then you are in the right place at the right time.

Details of extension .t3u

On this page, we're going to take a closer look at the .t3u file extension, which is related to Thief 3: Deadly Shadows Game Archive.

We'll explain what exactly a .t3u file format is and how you can use it. If you're interested in learning more details about this type of file, we'll show you where to find them. And if you ever need to convert .t3u files into different formats, we'll give you some tips on how to do that too.

Let's see the file format associated with this file extension!


  1. Thief 3: Deadly Shadows Game Archive

We trust that our website will provide valuable information for you. If you have any questions, just ask!

Thief 3: Deadly Shadows Game Archive

t3u file - Thief 3: Deadly Shadows Game Archive
The T3U file belongs to the Game Data category and works with Thief 3: Deadly Shadows, being used as a Thief 3: Deadly Shadows Game Archive. Thief: Deadly Shadows is an action-adventure stealth video game developed by Ion Storm Inc. The developer is still actively supporting the Thief 3: Deadly Shadows, likely. Based on our current information, Thief 3: Deadly Shadows does not use other file types.
Program name: -
Category: Game Data files
Mime-type: application/octet-stream
Related extensions:
.tdu The Suffering: Ties That Bind Data
.sdu The Suffering: Ties That Bind Game Data
.ceg The Punisher Data
.hop The Incredibles Data File

The .t3u file extension might not only belong to a single type of file, there could be various kinds that use it. Keep in mind that files with the .t3u extension may contain various content types. If you have helpful information about this extension, write to us!

Could someone have spelled the .t3u file extension wrong?

In our database, we came across the following similar extensions:

.t3 TADS 3 Compiled Game
.tu Turing Unit File
.t3i WebFOCUS TScom3 Script
.tru True BASIC Source Code

The .t3u extension is frequently misused

People sometimes confuse the .t3u filename extension. Based on the searches on our site, here are the most common misspellings from the past year.

t3 (1), tu (1), t3i (1), tru (1)

Having trouble opening a .t3u file?

If you want to open a .t3u file on your computer, you just need to have the appropriate program installed. Incorrect settings for the .t3u association can trigger this error.

Windows can't open this file:

File: example.t3u

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 from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program with which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2016/2019/2022, Windows 7, Windows 8, Windows 10, Windows 11, Linux, Mac OS X, macOS, iOS, Android