File Extension FOS

File type: 3 Saved Game File

The FOS file type is primarily associated with 'Fallout' by Bethesda Softworks LLC,.

Fallout 3 is an action role-playing game released by Bethesda Game Studios.

It is the third major game in the Fallout series. Fallout 3 takes place in the year 2277, 30 years after the setting of Fallout 2 and 200 years after the nuclear war that devastated the game's world.

The game was released in North America on October 28, 2008, in Europe and Australia on October 30, 2008, and in the United Kingdom and Ireland on October 31, 2008.

When windows gives you an error message saying that it
"Cannot open FOS files", this means either:

A. You need to identify a program that can open the file
B. Or your registry may be damaged

In both cases it is strongly recommended that you
run a free scan for registry errors.

'Identifying characters' used on FILExt.com are
provided by Marco Pontello from his TrID database

Program Name and MIME Type Info for File Extension .FOS

FILExt has been given permission to display a Program Name/MIME type database collected by Anthony R. Nemmer. Some of this data has already been included into the main FILExt database. Those entries which have not yet been incorporated are displayed below.