Masjin
(2011)
Masjin is my first try in making an online game and I feel that as such it was really successful! The game features team-based combat with various game modes, breakable terrain, classes, vehicles, items, researching and so on; it's honestly surprisingly large in scope. There public server is dead but I hope to fix that one day. The musics were composed by Artem Bank & Carl Hengen. Now there's also a tool for hosting servers! Here's the version log.
Masjin's server has been down for a long time, so you'll have to host your own.