Linux Gaming: your personal experience

There are a lot of games with Linux support in Steam, GOG, itch and other stores. But not all of them a REALLY running Linux natively, without emulation. Let‘s make a list of Linux games, tested by yourselves. Please, write store and system in description (e.g. GOG, Ubuntu 18). If the game running good, but have a couple of non-destructive bugs, mark them, too.