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First Portal 2 co-op trailer shows world's most extreme teamwork

News by Nathan Grayson Contributor

Published on Aug. 21, 2010

The first thing we thought of when we heard "two-player Portal" was "turning our partner's every step into a living, portal-centric nightmare," but apparently griefing isn't all Portal 2's good for. Crazy, right?

But it's totally true! Take a quick glimpse at how it'll work after the break, courtesy of Gametrailers.

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