I was looking at the image on this page and thinking: this reflects a lot of what is going on in the Conversation Community. We have an interesting mix of various narratives, technology, mechanics (determined by the host platform Google+). Building on top of that, we have a set of dynamics created as we interact with the each other and the narrative through the platform, and on top of that the 'take-away' which each individual member of this community receives.
Sure, the analogy doesn't hold for all games, and hanging out here may not necessarily be a game… but it certainly is rewarding, motivating and quite entertaining. At the end of the day: All the world's a stage, and life is just a game!
A Working Theory of Game Design « First Person Scholar
A Working Theory of Game Design