Enabled by technologies in image processing such as optical flow, a company in Ottawa has been releasing mass-interaction games under the CrowdWave brand. Check out some demos here.
How do they do it?
Aside from the technicals, what is unique here is that the technology matches the venue so well. Crowd unity is what it’s all about; this catalyzes the crowd and captures that classic impression that fans influences the game by making it really tangible. Nintendo did the same thing with Wii control – all it took was for someone to notice the movements people make when holding a controller are arm movements, not just fine thumb/finder movements. Scaling the interface to match the audience is always good practice.