Gamespot had an something on that to.
But never got a chance to read it.
I been reading this game site and I heard that Microsoft is trying to patent in game coop mode something like that.
here the site I got from another person- dont know if this legit or not.
http://kotaku.com/5318881/microsoft-patents-drop+in-co+op-in-shooters
I havent checked because I dont have any anti virus software on me
.

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