I say starbound as well. If there's one thing that never works I've found, it's community oriented servers for arena games. You never will get the mass required for it to work. You need something persistant instead, like a crafting game.
Granted if it was up to me I'd say wait for HOI4 to come out, have the "server" play as some shitty country that doesnt matter (Tanna Tuuva comes to mind), and see how many dumbasses we can cram in 1939 europe before all semblance of reality breaks as France invades Britian because Germany told him he said a mean thing on the farms about him, while Hungary starts attacking Bulgaria because it's funny, and so on and so on. All while the American player can't figure out how to put his soldiers on boats because of course he didn't play the tutorial.
