Free multiplayer FPS?

[XtrGamer123]

Title says it all. Closest I've got is Blitz Brigade which is a cheap imitation by Gameloft of TF2, it fails horribly and the controls are pathetic. Madfinger has good FPS controls, but Shadowgun: Deadzone is TPS and the multiplayer is only Wi-Fi (not sure, correct me if I'm wrong, but anyway its not an FPS) I'm sure there is a good one out there, just need help fishing it out.

 

[STARGATE]

Hopefully you find what you're looking for.
Good luck!