try plying metal gear solid portable ops online(not fps but its close enuf). Its really fun plying the multiplyer online.
But for your xbox 360(thats if ya have one or a ps3) go ply rainbowsix las vegas, co-op mode is really good.
yeah i agree with devils advocate. theres been alot of news and updates about MGS4 including its counter prt METAL GEAR ONLINE
too bad we're gunna have to wait until next year................oh crap my image is too big lol