Portal 2 Gets Its Peer Review

The first free downloadable content update for Portal 2 is now available on all platforms. Referred to as Peer Review, it brings with it new content for co-op gamers and solo puzzle solvers.

As a token of celebration, Portal 2 is now on-sale for fifty percent off on Steam. Get the full, critically loved game for cheap while you can.

Valve, creators of best-selling game franchises (such as Half-Life and Counter-Strike) and leading technologies (such as Steam and Source), today announced the free DLC update for its best-selling game franchise Portal 2 is now being rolled out across all regions on Steam, Xbox LIVE and PSN. The free DLC, titled “Portal 2: Peer Review”, is available to all owners of Portal 2 for download on PS3 and Xbox 360, and will be automatically downloaded via Steam on PC and Mac.

In “Peer Review”, you and a friend continue the story of loyal bots P-Body and Atlas as you puzzle your way through a mysterious new co-op test track and once again match wits with GLaDOS. The free DLC also features a single player and co-op Challenge Mode, and leaderboards to compare Challenge Mode scores with friends and the Portal community.

To celebrate the release of the free DLC, Portal 2 is now on sale for 50% off on Steam through Thursday at 4pm PT. For more information on Portal 2, visit http://thinkwithportals.com/. For more information on Steam, please visit http://www.steampowered.com.