Supreme Commander has been a very fun RTS - that barely worked on Windows.

FAF, or Forged Alliance Forever brought it back to life with my friends, where it rebuilt lobbies, shored up a lot of the patchy netcode, and made it fun - but as we know modding and linux gaming can be tedious.

Until I found this repo, where FAF now fully "supports" Linux! It was such a breeze, it found my Steam install, my copy of Forged Alliance, and it set everything else up. Huge kudos to the maintainer!