Portal 2's first DLC pack, Peer Review, has finally been released. Better still, it carries the unbeatably low pricetag of zero dollars on all platforms.
The update adds an additional co-op testing track for Atlas and Peabody to fumble their way through, complete with new puzzles, chambers, and dialogue from GLaDOS to ruin your self-esteem. Remember, no matter what she says, you don't really look that fat.
Also included in the DLC pack is a new a single- and multiplayer challenge mode that allows you to compete with your friends for the best puzzle times.
In true Valve fashion, the update was originally announced for release this summer before being pushed to mid-September. While it's now technically October 4, we won't complain too much if it means more Portal 2.
The update is now live on Steam, Xbox Live, and the PSN. What are you waiting for? There's science to be done!