.FOS File Type - Fallout 3 Saved Game
In Windows .FOS File Open With
- Bethesda Softworks Fallout 3
Operating System (OS)
An operating system is the software that directly manages a system’s hardware and resources, like CPU, memory, and storage.
Windows
Windows also known as Microsoft Windows or Win is a graphical operating system developed and published by Microsoft. It provides a way to store files, run the software, connect to the Internet, and lots more.