The Final Hours, the iPad app released by Valve a couple of weeks ago which takes a detailed behind the scenes look at the creative process behind Portal 2 with the help of games journo Geoff Keighley, is now available on Steam for a small fee of 1.99.
This piece of software provides some incredible insight into the development process of Portal 2. Have you ever wondered how the team came up with the gels and puzzles or wondered what was cut from the game? Here is your chance.
