Co-op is the new everywhere mode, a bullet point that's wormed its way into Mario, Call of Duty, and Fable. What we generally mean by "co-op" is a mode that allows collaborative destruction, which is cooperation in only the most marginal way. While those two concepts frequently overlap in games like Gears of War 2, Crackdown 2, and Modern Warfare 2, there is an inherent contradiction in working collaboratively with another person only to destroy everything around you. What other ways of cooperating in play are there? How does our innate nature to both trust and mistrust one another affect the way we play together?
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