What is .FOS file extension?
.FOS file extension is a known file type. This section of easyfileopener.com tells you everything you need to know about this extension.
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.
You can see a list of software programs here on easyfileopener.com that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.