re: Gcf.
Interesting, I have several GCF's in my steamapps directory (where I'm used to them being years ago)
Directory of D:\Program Files\Steam\steamapps
11/19/2013 12:34 AM 1,288,837,372 episode 1 shared.gcf
11/19/2013 12:34 AM 1,512,870,080 episode two content.gcf
11/19/2013 12:34 AM 708,563,112 episode two maps.gcf
11/19/2013 12:34 AM 703,458,720 episode two materials.gcf
11/19/2013 12:34 AM 286,271,308 episodic 2007 shared.gcf
11/19/2013 12:34 AM 502,615,368 half-life 2 episode one spanish.gcf
04/21/2013 10:50 PM 524,462,868 half-life 2 episode two english.gcf
06/20/2010 11:35 PM 86,956 portal the first slice.gcf
11/19/2013 12:34 AM 157,700 sourceinit.gcf
02/13/2013 12:08 AM 36,538,052 winui.gcf
10 File(s) 5,563,861,536 bytes
I've played (and allowed Steam to "update") all the games listed as part of the filenames since the 2013 update.
I was not aware of the VPK being the new GCF archive.
I did find some VPK files in various folders that do indeed seem related to these games.
RE: GCFScape
I mistakenly quoted my gcfscape version (I did download latest, but saw on web somehow the 1.8.0 version). It was late for me. Oops.
Though GCFscape will open/extract the VPK files I found, they will not extract (but will list internal names/directory structure) of the GCF files I have listed above.
So, can I save 5+ GB of space and safely delete those GCFs?