.gcf

File Type Game Cache File IconGame Cache File
File Format Proprietary (Valve)
Usage Open manually; may be referenced by an application
Rank ★ ★ ★  Common
Description

Cache file used by Valve Corporation's Steam game development software; contains a virtual file system that may include metadata, file fragments, checksums and other data; used for updating Valve software.

GCF was originally an acronym for "Grid Cache File," but now stands for "Game Cache File;" it is the format used for storing official Steam games and for downloading official content; GCF files are not meant to be manually altered by the user.

Open With
Windows

IconValve Steam

IconGCFScape

IconGCFExplorer

macOS

IconValve Steam

IconGridMount

Updated 2007
space