Has anyone tried King Arthur's Gold? http://kag2d.com/en/ Its a fun game. A mix of Terraria and Soldat. I played it a couple of rounds then bought the full version. Although it is possible to play the free version without buying it. If you want to play some multiplayer team death match in 2D with pixel graphics you should give it a try.
I think that ukgamer was hosting a server for this on our box, but I don't know if he still does that.
I hosted a server for this two months ago, the community in-game is active and pretty cool but their forum community is just as weaboo and stupid (Wait, same thing) as ours. The game was fun and setting up the server was simple too, I can't say that for other games. P.S. Shell out the whole ten americlap dollars it costs for the full version, it's much better plus the price will increase after they release the 1.0 update that introduces loads of stuff.