I finaly found it. A multiplayer FREE games that isn't shit.
Check it out: http://www.soldat.prv.pl/
Basically Quake meets worms meets CS in 2D with some cool music too
(only three tracks, listned to 2 of 3)
Just spent an hour and a quater with Pev just fightin bots ... I like it. For $9 (little over £5) You can get all the customize options and stuff (I think it also enables you to record your own MP3's in to the game engine) Record entire maches for those timeless classics... and just blow the shit out of everything that moves.
Bot's are smart though, smarter on some levels it seems, out of that hour or so just, we came accross easy, equal and totally out matched challenges, needless to say, the bots doubled our totall... bastards. But still good fun. I Definatly recomend this.