Pingu
a.k.a Charlie Goodvibes
Pretty awesome game that has gotten a lot of critics excited but barely anyone seems to know about.
Free Online Multiplayer FPS | Firefall the Game
It is a closed beta and you need to get an access key. If you're interested, try the Off Topic section where other players are giving out their extra keys.
If anyone is already playing, or if you managed to get a key and need someone to show you the ropes... My i.g.n. is Saturn.