This game is phenomenal, sufficeth to say, if you enjoyed the original Portal you'll love this game. The puzzles are slightly less, and aren't as much of a focus. ( Though they are still wonderful. ) The comedy, however, is kicked up tenfold. The game had me laughing the whole way through, and has a somewhat interesting story. The artstyle has this wonderful vintage aesthetic, and the graphics are defenitely passable by today's standards. Combine all that with that with a cooperative mode and custom maps and you have a staple of any game library. If you are on the fence, or even if you aren't, you HAVE to play the portal games some point in your life.