[ari__]

Proton does an excellent job! Something to consider is that many people (myself included) will offer consulting services to help get your game running natively on Linux with as little effort from you as possible. I personally offer that free to indie developers because I love seeing more native Linux support, but this kind of thing is often not very difficult for someone familiar with the target OS.

I'm curious as to what kind of game engine you're using where targeting Linux isn't as simple as choosing it in a dropdown menu as well, most modern engines support that very well.