The Final Hour of Portal 2 takes you deep within the top-secret offices of Valve, creators of Half-Life, for an unvarnished look at the creative process behind the new video game Portal 2. Journalist Geoff Keighley was granted unprecedented "fly on the wall" access to Valve over the past three years to create this staggering 15,000 word multimedia experience. From the hush-hush Portal prequel that was shelved to the last minute scramble to complete the game’s story, The Final Hours of Portal 2 is a gripping and dramatic story brought to life by exclusive photos, videos, interviews, interactive experiences, and other surprises. In The Final Hours of Portal 2 you’ll…