What is a .DAT File And How To Open It – YoYo Games (Visual Guide)

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While downloading files, you might have downloaded a file with the .dat extension. You most likely know what the file is, but you might be unsure on how to open it. Don’t worry! This article explains everything about the .dat file extension, how to open and work with it on various systems.

What is a .DAT file?

The file extension .DAT comes from GameMaker Studio Game Audio Data Package. The creator of this file extension is YoYo Games. The file is a game related file.

What to know

There is currently 1 software that can open the .dat file on 1 platform.

How to open a .DAT file?

Below we have written a comprehensive guide on how to open the .DAT file on various operating systems.

How to open a .DAT file on Windows (7, 8, 10)

The .dat file can be opened in 4 steps on Windows.

1. The first step is to download the UndertaleModTool software. You will be using this software in order to open the file. The other software that you can use is UndertaleModTool.

Step 2

Step 2: Locating your .DAT file

2. The second step is locating the downloaded file. If you don’t remember where you have downloaded your file to, you should check your /download/ folder as it usually gets automatically saved there.

Step 3

Step 3: Choose “Open with”

3. In the third step, after locating your file, right click on it and click “Open with”.

Step 4

Step 4: Choose the software and click ok

4. In the fourth step, after clicking “Open with”, you should see the UndertaleModTool software that you have downloaded. Choose your software and click on “OK”. Congratulations! You have opened your file on Windows.

Still cannot open the .DAT file?

If you are still unable to open the .DAT file, it might be because you are trying to open the wrong one. The .DAT file extension is similar to other file extensions such as: .dat – Data File, .dat – Piriform, .dat – Mojang Specifications, .dat – Jordan Russel, .dat – Microsoft, .dat – Porteus Team, .dat – U.S. Department of State, .dat – Electronic Arts, .dat – Redump.org. You might be trying to open the wrong file, please recheck if you are trying to open the right file extension again.


In this article you have learned how to open the .DAT file with the UndertaleModTool program on Windows.