File Extension Library

.FOS File Extension

  • Developer by: Bethesda Softworks
  • Category: Game Files
  • Format: Binary

What are .FOS files and how to open them?

Can't open .FOS file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .FOS file.

What is a .FOS file extension?

.FOS file extension is created by Bethesda Softworks. .FOS has been classified as Game Files. The format of .FOS file is Binary.

.FOS is Fallout 3 Saved Game

Saved game file created by Fallout 3, a post-nuclear war action role-playing game; contains game progress, including the player's location, character abilities, items, and mission states; can be auto-saved by the game or manually saved by the player.

List of all softwares that can open the Fallout 3 Saved Game
Bethesda Softworks Fallout 3

How to fix problems with .FOS files

  1. You need to update the application that you normally use to open .FOS files. Only the latest version of the software supports the current .FOS file format
  2. You need to check the .FOS file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)