Portal 2 - The Final Hours

Portal 2 - The Final Hours is an interactive digital e-book. It includes articles, photos, videos, interviews, interactive experiences, and "other surprises" regarding Portal 2's development and launch.

Overview
The Final Hours of Portal 2 is the story of the creation of the new video game Portal 2 from Valve. The book's journey takes people through over 3 years of development and shares new insights into the creative process behind the game.

Purchase

 * on iTunes (for Apple iPad)
 * on Amazon.com Kindle Edition

Teaser Trailer

 * In a crude HTML format