What is a .FOS File And How To Open It – Bethesda Softworks

Table of Contents


Have you downloaded a file with .fos extension, but you have never seen this extension before? You most likely know what the file is, but you might be unsure on how to open it. Thanks to this easy guide you will be able to find out what .fos file extension is, how to open it and how to work with it.

What is a .FOS file?

The .FOS file extension stands for Fallout 3 Saved Game. The creator of this file extension is Bethesda Softworks. The file has the binary format, and it is a game related file.

What to know

There is currently 0 software that can open the .fos file on 0 platforms.


Unfortunately, we haven’t found a software associated with this file extension yet, however we are working on it!