SteamOS is just Linux with the desktop environment replaced.
You can boot Windows into an alternative shell.
Do you have any firsthand experience using windows that way? Because I’ve been setting up big screen controller focused HTPC frontends on Windows using that exact method for years.
Apparently elsewhere in the thread people are saying the AI may not be as good.
I remember seeing Half-Life on my friend’s older brother’s computer as a kid, and I never played it. I did play 2, and by the time I considered playing 1, I grabbed Black Mesa because it just looked so much nicer. I enjoyed it for sure. But I also played it before they finished so maybe I should go back and play it again.