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Aperture Science Emergency Surprise System

Portal 2 Gamescom gameplay (720p cam)

Portal 2 E3 Teaser (720p)

Valve Backstage Gameplay and Interviews

  • - Interview with Erik Wolpaw and Doug Lombardi
  • - G4 interview with Doug Lombardi
  • - IGN interview with Doug Lombardi
  • - GameSpot's interview with Doug Lombardi

Gameplay videos (720p)

See Valve's Channel for individual videos.

  • Part one :
  • Part two :
  • Part three :

Valve's channel

Also viewable at Portal 2 official site, and on the Steam Media Store.

Meet Wheatley

Excursion Funnel

Aerial Faith Plate

Thermal Discouragement Beam

Pneumatic Diversity Vent

Repulsion Gel

Propulsion Gel

Other sources for videos

- GameTrailers's Portal 2 page

- GameSpot's Portal 2 page - includes an interview with Doug Lombardi

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