Files that contain the .vfs file extension are most commonly associated with virtual file systems. These files contain an index of files and directories that are located on a hard drive. The computer uses these VFS files to reduce the time that it takes for the computer to browse and search for files that are located on the drive.
The .vfs file extension is also used by a variety of gaming applications. In this case the VFS file contains an archive of game files including the game graphics, music, maps, sounds, textures and other game data. The file extension is commonly used for UFO games that have been created by Czech team Altar.
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