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Portal 2 DLC: Perpetual Testing Initiative Trailer (Crowdsource the Revolution)

Portal 2 DLC: Perpetual Testing Initiative Trailer is free upcoming DLC for Portal 2 by Valve. If you dig the style and humor that went into this terrific preview of a Portal 2′s upcoming level builder, you may also enjoy Meet the Spy, an excellent animation set in the world of Valve’s Team Fortress 2.

(via Boing Boing)

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