If you've been holding out on the latest horror game from Bloober Team and Aspyr Media due to it being Steam only, prepare your pants as it's now on GOG. GOG don't tend to make a big splash when they put up a Linux version and I'm surprised they didn't email me directly this time (they usually do). It seems they mentioned it on their forum here.
On top of that, it seems it should also work properly on Mesa in future as well! A user pointed out to me via email this bug report, which has a workaround patch to fix it. Since I don't use Mesa, I'm unsure if/when that patch will land in an official Mesa release (if it hasn't already). Good to see though, as I saw a number of AMD users unhappy it didn't work right.
See Also: My review of Observer.
About the game:
The year is 2084. If you somehow survived the Nanophage, odds are you were killed in the War. Those who live have turned to drugs, VR, neural implants— anything to distract themselves from this new reality. You are Daniel Lazarski, an elite neural detective known as an Observer, and part of a corporate-funded police unit whose purpose is to hack and invade suspects’ minds. In this future, anything you think, feel, or remember can be used against you in a court of law.
Thanks for the tip Fabrics!