@gamingonlinux Far from a Steam release, currently itch io only, but I'm planning to release in early access some time this year. With the game being developed entirely in Linux, realistically, it has better Linux support than Windows.
https://gilational.itch.io/punkageddon
(Bit jankier than I want it to be right now because I'm dumb and decided to pack a load of fixes/changes into a single major update that's making taking way too long.)