What is a .REZ File And How To Open It – Monolith (Simple Steps)

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Have you came across a file with the .rez extension and you don’t know what it is? It is important to know how to open this file – in order to be able to work with it. Don’t worry! This article explains everything about the .rez file extension, how to open and work with it on various systems.

What is a .REZ file?

The file extension .REZ is from Lithtech Game Engine Resource File.The developer of this file extension is Monolith. The file has the binary format, and it is a game related file.

What to know

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

How to open a .REZ file?

Below we will show you a step-by-step guide on how to open the .REZ file on various operating systems.

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

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

1. The first step is to download the Dragon UnPACKer software. This software will be used for opening the file.

Step 2

Step 2: Locating your .REZ file

2. In the second step you need to locate 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 right click on your file and choose “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 Dragon UnPACKer software that you have downloaded. Click on the software and click “OK”. That’s all, now you have opened your file on Windows.

Still cannot open the .REZ file?

If you are still unable to open the .REZ file, it might be because you are trying to open the wrong one. The .REZ file extension is similar to other file extensions such as: .rez – OpenText, .rez – Ambrosia. You might be trying to open one of them. Please recheck the file extension again.


In this article you have learned how to open the .REZ file with the Dragon UnPACKer program on Windows.