Before I start this review, I will need you to do one thing for me. Buy Portal 2. I could finish the review right here with those words - seriously, that's all I need to say; it's that good. For those of you who trust me, follow the first step, buy Portal 2. Those of you who require a bit of persuasion, well, continue reading why you should buy Portal 2 and once you've played it, you'll understand exactly where I'm coming from.