Portal 2 Peer Review DLC Out Now on Xbox 360, Screenshots Available

Portal 2 on the Xbox 360 has just received its first piece of proper downloadable content, in the form of the Peer Review add-on, which is now live on the Xbox 360 platform, and also scheduled to appear later today or tomorrow, October 5, for the PlayStation 3, as well as on the PC and Mac platforms, completely free of charge.

Portal 2 impressed legions of fans of its developer, Valve, with a top notch single-player campaign as well as a fun-filled and challenging cooperative campaign.

Now, in order to extend the adventures, Valve has deployed the Peer Review add-on for the cooperative mode, add-ing a brand new set of challenges for the two robot protagonists, Atlas and P-body, devised by the main antagonist, GLaDOS.

The DLC is now available for free download on Xbox Live for the Xbox 360 version of Portal 2, and is scheduled to appear later today for the PC and PS3, so check back soon for more details.

Until then, check out some new screenshots of the DLC below.