Pervasive Games

People have argued over the definition of a "Pervasive Game" for a fair while, I personally believe in its simplest form that a pervasive game is a game that has roots in the "Real World" but some control elements or rule sets controlled by someone or something else, for example things like Geocaching could be considered a pervasive game in that it blends both technology and the real world into a gaming environment.

If you look below this post to the one entitled "La Decima Vittima" you'll see an example of a pervasive game, it incorporates both physical elements (The actual hunting/murder) and a control element (The club) this brings it all together as a pervasive game played at a professional level, albeit in a fictional film.