Where to get more Chapter? (Portal 2)
Buy Portal 2 - The Final HoursPortal 2 — The Final Hours digital book which will show you the inside secret offices of Valve while working on Portal 2. The book has been added as another free Chapter! I bought Portal 2 - The Final Hours
but when I ran the game there was just a book, but the description says that there will be a free Chapter. what to do?