Valve’s popular multi-million selling puzzle sequel Portal 2 is about to get new downloadable content. The good news: it’s going to be completely free. Titled “Peer Review”, the pack will feature new co-op missions, a challenge mode, and scoreboards. All of this will be available on PC, PS3 and Xbox 360 versions of Portal starting October 4. Game Freaks 365 gave Portal 2 a 9.4 out of 10 upon its release in April 2011.
