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Portal 2 Perpetual Testing Initiative Trailer
Cave Johnson from Aperture Laboratories introduces the perpetual testing initiative for Portal 2, which combines the powerful, easy-to-use Puzzle Maker with full Steam Workshop integration. So start making some awesome levels!
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Videogame Trailers:   Portal 2 Perpetual Testing Initiative Trailer
Cave Johnson from Aperture Laboratories introduces the perpetual testing initiative for Portal 2, which combines the powerful, easy-to-use Puzzle Maker with full Steam Workshop integration. So start making some awesome levels!
Aired: 4/29/12
Views: 11
Network:  G4
 
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