It did. I recently downloaded steam on Ubuntu and you don’t need to install any 3rd party stuff yourself. It’s available as compatibility toggle in steam. Sometimes you need to configure different version of Proton for games to work and they are slower to start. But they run fast and I didn’t experienced much bugs. It’s amazing, now after end of win10 I can ditch windows completely, as this and photoshop was the only reason I still have win10 installed.