content: Working Theory About the new Steam Play WINE layer for playing Steam Games on Linux So this is what I have sussed out; I could be wrong about any of this. The problem is that much of the documentation available still reflects the pre-launch versions of the subcomponents which Steam requires to run these games. The documentation doesn't seem to tell us what versions of what we currently need to run this. I think the Steam Play element is working [As I am able to install Windows games now] but I think the Proton-Custom version of Wine needs to be compiled manually still. I have a functioning WINE 64, but my working theory is that Steam doesn't know whether Wine is configured properly or not. I show the option "Proton 3.7" - and in debugging infos I get "Wine 3.7" from Steam, but I don't believe I have successfully installed/integrated Proton yet. I am compiling it now to see if I can detect any changes in behavior. I have the suggested PPA Vulkan drivers installed, and I am currently able to launch Linux-Native games successfully with this build through Steam. Suppositions: Update: Without.compiling.proton or anything, I have Skyrim launching and playing. I installed Wine through apt.