The circle might not be the best fit, but the square would be a good start. Perhaps a triangle if we do three participants.

In any case, our concept would be very interactive. That is the facet we are trying to focus on. We would like to have a sort of cooperative experience where participants can play, discover, and have fun with their friends or total strangers. Once we have a solid idea nailed down, we will be able to explore how we can break rules or conventions. We're currently contemplating somehow tricking the audience, but we have yet to determine in what way that would integrate with the presentation well. We would rather it not be an afterthought.