neumi5694: I would be surprised if you find "Good Old Games" on any official webpage, you'll find it only in forum posts or third party articles.
"GOG is the place to build and play your collection of Good Old Games and modern hits."
From GOG's frontpage.
Obviously it's not exactly what you are referring to, but still it is a term that they actively use.
King Eli: I mean yeah it's cool to have new games on the site as well, but most of your customers came here for good OLD games like your title suggests.
Ancient-Red-Dragon: I disagree. I come here for DRM-free games, not "old" games specifically.
In fact, I find GOG has way too many old games
And I strongly disagree to that.
GOG was much better store when they focused on older games alone, even though in theory I support having newer titles in the selection. After all, they all get old at some point.
But old games are much simpler.
No massive flood of DLCs, no abandoned in development titles, third party support is extensive, and so on. And in many cases the games are simply better.
If GOG had some Commodore 64 games in their catalogue, that would make me happier than any new game I can think of.