I love this concept, and admit that when in a situation where I’m waiting for something (train, friend etc.) and end up hanging around, I tend to pull out my phone and aimlessly look busy. When you look around everyone else is doing the same, in their own little digital world, oblivious to the world around them an in particular of interacting with other human beings ! 

This approach marries the two in a really fun and engaging way, you’re still using your phone but you’re playing a multiplayer game against everyone around you with the central POI being the big screen the game is displayed on…I can see this really catching on.