PC.net

.gcf

File Type Game Cache File IconGame Cache File
File Format Proprietary (Valve)
Usage Runs when opened
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

macOS

IconValve Steam

Updated 2007
Information from the PC File Extensions Reference
https://pc.net/extensions/file/gcf
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