Well, it's Portal, what do you expect? Brilliance from start to finish, with breakthrough performances from both Stephen Merchant and J.K. Simmons, as well as the return of GLaDOS's genius. The game manages to give us flashbacks of the initial surprise and charm of the first game, only to plunge us in something completely new and unexpected with some great new mechanics. The usual Valve ultra-polish is there, and the appearance of Co-op (complete with bombshell ending) is very welcome. If I have any criticism, it's about the lack of highly advanced levels in both coop and single player, although I imagine that will be fixed with DLC.

Anyway, like all Valve games, this is a must-play.

As hilarious as the jokes are, as charming and fun as the characters and voice actors are, as interesting and varied as the environments are and as good as the story is, sometimes the puzzles in this game are just too damned random. I spent an hour in the first episode wandering around the map, trying to use everything on anything, before I realized I was supposed to use a cheese wheel on frickin' jail cell bars. What?? This type of thing happens often throughout the series, which makes finishing the game sans walkthrough guide very frustrating at parts (I'd say about 10% of puzzles are like this). Still, with a bit of online help, this was super fun from start to finish and features some ridiculously quotable jokes.