A brief explanation of GCF's and NCF's Both are steam's files, as you install a game from steam, you will get the GCF or NCF of that game. Where can I get a GCF or NCF? In the forum, there are lots of topics which contains this. Go to http://freesteam.org/forums/gcfs-ncfs-game-files/ and search for the GCF/NCF you need. OK, I have the NCF/GCF. Now What? If you have a cracked steam and the GCF/NCF : Place the GCF's or NCF's in your /steam/steamapps folder and restart/start your cracked Steam client. If You use a launcher : put the GCF's/NCF's in the steamapps folder defined by the launcher and restart your launcher. Mini GCF/NCFs and Full GCF/NCFs Mini GCF/NCF = a GCF with near 0 bytes of data in it, this is useful to make certain games download via steam. Full GCF/NCF = A full version of the game, this can be used by launchers and steam to play the game you downloaded.