Do native source ports exist? Or should I go with running the game using wine?
Thanks! I went with this one https://github.com/tx00100xt/SeriousSamClassic
Mouse was a bit janky at first but it's alright now after I disabled acceleration, set sharp turning option and I also had to set sensitivity to as low as 4% for some reason.
I see it's based on port by icculus (he's fucking legend) but I couldn't get his version to compile because it's 10 year old c++ code and c++ compiler devs hate backwards compat