I played the shit out of this game for a year or so before it just completely died. I came across a post about it earlier today that reminded me how great it was. I miss it a lot. Relatively slow moving, strategic, 3D space arena teamed CTF, I made some great friends playing that game.
See my other comment here with the discord and github links. I have gotten it working on linux by manual patching it. There are linux instructions in the discord.