PAX 2010: Portal 2 co-op multiplayer preview and trailer at

Valve's Portal 2 co-op multiplayer trailer from PAX 2010 has been released, and we were on hand to view the live demonstration at PAX. Read on for our quick preview and then watch the trailer. The game looks amazing, and it's probably going to really mess with your head—in a good way.

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GWAVE2751d ago

looks freakin' awesome, and I love that classic Valve humor.

Can't wait to play this with Steamworks on my PS3.