You can view the port by looking through the CVSweb frontend. i.e
http://cvsweb.netbsd.org/bsdweb.cgi/pkgsrc/games/quake
I know CVSweb does provide a "download this folder" function but it does not seem to be enabled for this install.
Perhaps you can use anon-cvs to download it?
http://www.netbsd.org/docs/pkgsrc/getting.html
Rather than grabbing the whole thing, just download from the folder you need.