What is a .SI File And How To Open It – Mindscape (Easy Guide)

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Have you came across a file with the .si extension and you don’t know what it is? Perhaps you know what the file is, but you simply don’t know how to open it. In this article we will explain what .si file extension is, how to open it and how to work with it.

What is a .SI file?

The file extension .SI stands for Sound Interleave Archive. This file extension belongs to the developer Mindscape. The file is a compressed file.

What to know

There are currently 2 software that can open the .si file on 1 platform.

How to open a .SI file?

In this part of the article we will show you how to open the .SI file on various operating systems.

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

There are 4 simple steps to open the .si file on Windows.

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

Step 2

Step 2: Locating your .SI 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, 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 LIME software that you have downloaded. Choose your software and click on “OK”. Congratulations! You have opened your file on Windows.

Still cannot open the .SI file?

If you cannot open the .SI file, it is entirely possible that you are trying to open the wrong file. There are many similar file extensions that look like the .SI file.si – Autodesk. 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 .SI file with the LIME, LEGO Island Rebuilder programs on Windows.