Identification

• A file with the gcf file extension is known as a Game cache file. The gcf file extension serves as a marker for your computer, allowing Steam to access the files when needed.
  
  

Function

• A gcf file contains a new game for the Steam program.
  
  

Types

• The games contained in gcf files are from many different genres, including adventure, strategy, racing and role playing games.
  
  

Sources

• Gcf files are downloaded from Steam's official website. You can elect to have these files automatically downloaded onto your computer when new games become available.
  
  

Considerations

• Because gcf files are required for Steam to function properly, never attempt to open or delete a gcf file.