Portal 2's single player story becomes more intriguing as you progress through the game and you'll really have to put your thinking cap on when it comes to the various puzzle rooms that you have to navigate through. The co-op's also a blast whether you're playing locally or online with a friend. It looks and sounds great too, which is always a bonus! Basically, there's really nothing to dislike with this one. Zavvi are parting with copies of the game for £13.85, which is just over £11 cheaper than the next best offers from Game, Gameplay & Gamestation. Thanks to zymoloid @ HUKD.