This sounds similar to something I saw/used back in 2008 when I visited Epcot centre in Walt Disney World Florida. It was part of the ride queue for "Soarin'", basically the people in the que were devided into 2 sections, the left and right in front of 2 huge screens, and a few different games were played, some which just seemed random, like having everyone on screen try to pop as many "bubbles" as they could, hopefully more than the other team, to more synced games, where each group of people were given "control" over a giant bird, and with synced movements I.E the whole crowd leaning left/right/up/down guided the bird through a series of obsticles to reach the end before the other teams, it was crazy fun but only if the other people you were queue-ing with were willing to play along.
I dont think it was nearly as sophisticated as this though, at least from what they say, and this does sound really cool its just a shame I'll probably never get a chance to use it, being in england I dont see this being implimented at wimbledon some how, cant see the queen in her royal box getting up and dancing with the rest of (what was once) Henman Hill XP
