Kerbal Space Program!

Good game but I think I would recommend paying through proton anyway because the native realise seems rather forgotten about.

Guess the devs were too focused on trying to make KSP2 less of a clusterfuck

I wouldn't give the original devs a hard time. It seems like they did an amazing job with very few resources. I don't even blame them for releasing a Linux native port as an afterthought, even that is better than most.

I will be very very surprised if KSP2 sees any meaningful improvement before being shut down.