Intriguing new semi-passive game based on Bluetooth LE and anonymity. From their guide:

PKPKT will find other players by scanning for them with Low Energy Bluetooth. When that happens, both players are alerted to try and steal from the other. If you’re lucky, the other player is spacing out and you can grab their cash.

Fake cash, mind you. You start with a thousand bucks, and you try to end up ahead. There doesn’t appear to be a finish line, and it seems to be quite reliant upon it becoming popular. It’s a very intriguing concept if it does become widely-played.