Portal 2 Perpetual Testing Initiative [HD]

By: IGN

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Uploaded on April 30, 2012 by IGN

No one knows how to make a trailer quite like Valve. Whether or not this level editor DLC interests you, you should definitely watch this funny trailer.

Tags:
Games, Computers, Playstation-3, Portal-2-perpetual-testing-initiative, IGN, Xbox 360, Portal-2, Video Games

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