Microsoft talks next-gen Xbox reveal, 'tonnes' of Xbox exclusives to be announced at E3

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kowenicki said:

JayWood2010 said:

NobleTeam360 said:

There was Driveclub, Knack, and Killzone Shadowfall. 

InFamous Last Son

so 4.

I guess "The Witness" could qualify as "exclusive", although I'm pretty sure it will atleast come to PC aswell. Diablo 3 probably is multiplatform and so are the other games that were shown (Destiny, Watch Dogs).