Apparently there's a native linux build for it too, "FS2 Open"
Edit: It's actually a java app that (supposedly) works on Windows, Linux and Mac (yeah: same app on all three), it enables a host of updates that (supposedly) greatly improve visuals, facilitate running in screen resolutions other than 1024x768, and a bunch of other mods, levels and whatnot.
http://www.fsoinstaller.com/
Judging by forums, this is a game with a long history and big fanbase, which actually has put me off a bit now for the implied time investment.
:-@
I just wanted to go in, fly around and shoot down some spaceships and get out.
EDITED: 27 Sep 2019 18:58 by DSMITHHFX