www.soldat.pl
Discovered this a few months ago and i'm back into it now with a couple of friends. It's a free download, sorta like a mix between worms and most modern online fps games and seriously addictive :)
I am currently running a server named 'klarrix' every night at times between about 6 and 9 (not set in stone, just whenever i get an hour or so of free time)
All welcome :)