What would life be without the yearly Portal 2 playthrough? In my opinion, this game is Valve at their very best. The writing in this game is absolutely phenomenal; so much so that it still makes me laugh all these years later. I have all the puzzles memorized, but it just makes it all the more obvious how tightly designed every chamber is. An almost perfect game that's only held back by the fact that, haha Valve can't count to three.