Portal 2 Teaser Trailer (video)

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Portal 2 Teaser Trailer is a video which was released by Valve on June 15, 2010 in order to promote Portal 2. The video features a mixture of pre-rendered and in-game footage that showcases the Aperture Science Facility in which Portal 2 is set, and also reveals that GLaDOS will be an integral part of the game.


Teaser trailer video transcript