I imagined anyone making the next hugely popular game in the same category as those that I mentioned is not going to put much money in developing it, just time.

I imagined anyone making the next hugely popular game in the same category as those that I mentioned is not going to put much money in developing it, just time. And doing so, they'd likely just target the particular Linux system they happen to have or like---whether Arch, or Android, or even Alpine. It might well work on other Linux systems (or even non-Linux), or it might not. Maybe I'm off base here, but that's what I see (even casual) gamers do, especially younger ones: go to great lengths to get the game they want, to run. If that system which runs the game also supports their other hobbies, school or work, then that's what they will use.