[heelix]

Supreme Commander is still pretty active, via the FAForever community. The original single player maps were converted to co-op. Lots of game modes, a new race, unit tweaks, new maps - very much a game that still gets love.

When the next steam sale hits, you only need the Supreme Commander: Forged Alliances game (Under $3) and https://www.faforever.com installer and it all updates lovely. Works on Linux, multi monitors, and a dozen or so players connecting.

For me, I found this was the open source project I used to keep my SpringBoot skills current. Nothing but positive things to say.