Gray is a mob control simulation game created by Intuition Games' duo Mike Boxleiter and Greg Wohlwend, where the challenge is to convince the rioters to change sides in an attempt to stop the conflict for good. This basically involves matching the wave patterns that appear when you try to strike up a conversation with any of the mob individuals.

A proper end sequence can be achieved once you've repeated the same steps a couple times over (albeit with increasing difficulty).