Portal walkthrough developer video (part of Half-Life 2′s The Orange Box)
Half Life 2′s “The Orange Box” delivers five innovative action games from Valve, the creators of the blockbuster Half Life franchise, in one box. The Orange Box includes the new games Half Life 2: Episode Two, Portal and Team Fortress 2 in addition to full versions of award-winning Half Life 2 and Half Life 2: Episode One for the most complete first-person action experience anywhere.
The Orange Box will be available for PC, Xbox 360, PlayStation 3 and released on October 9th, 2007. Take an up-close look at the first few levels of the innovative game, Portal, that will be include as part of the Orange Box.
Oh my, even the start is making me dizzy! Looks awesome.
More footage from Half-Life 2: Episode 2, Team Fortress 2, and of course Portal.
Did you know the unique PS Vita game Gravity Rush is helmed by the Siren series director? 
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