I believe it holds true for some single player games as well. I seem to remember Half-Life 2 not wanting to launch without Steam present, same for some other Source games. That really might not be the case though, I’m curious to do more testing… Either way, I watch enough Linux gaming on ARM SBCs (check out MicroLinux and LeePSPComputer on YouTube), can I see them using Goldberg from time to time to get games running with no Steam
I used it for Overwatch before it was available on Steam, worked just fine for me!