I have half a dozen games that I should be crapping on about at length, but instead I bring you some flash brilliance about a phenomenon that any regular PT user can relate to:
Metro Rules of Conduct is a game about the awkward situation of commuting in my hometown, Stockholm. Look at mobile phones, ties and MP3 players for score, but whatever you do – avoid eye contact!
I love it not just because it’s a bit of fun, but also because it’s a perfect example of how powerful an expressive medium gaming can be. You could explain how people on PT behave in writing, but ten paragraphs later, someone who’s never caught a train might still not get it. A game, though, can express the same concept in seconds, with nary a word of exposition or dialogue, by having the player experience it first-hand.