Going on right now in a New York City near you is Payphone Warriors: “You and your teammates must dash across the blocks around Washington Square Park in a bid [to] control as many payphones as possible. You simply make a call from a payphone to the game system and enter your team number to capture a phone. For each minute your team controls that phone the team scores one point. Grab more phones for more points.”
And if someone complains that they actually need to use that phone… you know what to do.
(Brought to you by Abe Burmeister of Abstract Dynamics).