Behind the Scenes of Portal 2 eBook Now Available

Do you like the game Portal? Then you’ll probably want to buy the eBook.

The Final Hours of Portal 2, a new enhanced eBook app, was uploaded to iTunes yesterday. I bought it, and I heartily recommend that you do so. It has all sorts of interesting details like video clips, a 3D model of the co-op robots, a deeper explanation of the viral marketing campaign Valve ran back in March 2010, and several panorama photos of Valve offices.

I’ve

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