You might remember the crowd-sourcing campaign from the beginning of this year to make a fully FOSS remake of a rather unique game.
Well, a bit later than promised, but really awesome never the less:
Note that this is a really early alpha and most of the art still has placeholder quality. It is quite playable multiplayer game already though, and there is a Linux and a Windows version for download on their website.
Please don't forget to give feedback on our forums (also if you are interested in helping out).
This is by the way to my knowledge the first FOSS game utilizing the open-sourced version of the Torque3D engine and also the only one that uses the work in progress Linux port so far.