Lutris 0.5 (BETA) is out with GOG game store support!
Indeed: a 3rd party talent has to put GOG support when GOG themselves cannot even put out a Linux launcher, despite the promise from years back now.
Is GOG getting paid for NOT providing a Linux support from the likes of Microshaft in the shadows?
Launch your games from one user interface. It comes with tons of options including Steam, Wine, emulators +more.