Here are some videos of the Pulsefield in operation at Burning Man 2013.   The first shows some users with the virtual Guitar  App:

This example first shows a group collaborating with the Tron application.  Although this App was designed as a game (players create a block path and explode if they intersect their own or another path), these people used it to draw simple figures.  The same group then goes on to explore the Voronoi and Guitar Apps.  (See the Apps page for more details on these).