Metal Gear Solid 4 developer reveals truth about PS3 exclusivity - Xfire

Apparently, Metal Gear Solid 4 could''ve come to the Xbox 360 and there actually existed a working version of the game on the Xbox console.

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News - July, 2013

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Metal Gear Solid 4 developer reveals truth about PS3 exclusivity - Xfire

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News - July, 2013