One of the reasons why you need to play Portal 2

Portal 2, one of Valve's masterpieces in gaming. The intuitive first person shooter puzzle game. These some of the few reasons why you should play it.

If not for its story, incredible single player campaign, mind bending puzzles, the ability to divide by zero, the witty banter of GLaDOS and Wheatley then here is another reason why you should pick up and play the game right now.

For moments like these.

[youtube http://www.youtube.com/watch?v=RTvwutm9eQs&w=560&h=349]