ARENA

You're in Central Park with 5 friends. You sketch a defensive play in the air, and suddenly your team's territory glows golden across 3 city blocks. A rival team sketches an interception move, and your phone vibrates: "HEAD TO THE FLATIRON BUILDING NOW—VITAMIN BOOST REWARDS AT STAKE." You sprint through Manhattan streets, hearts racing, as strangers around you are clearly playing the same invisible game—the city has become a living colosseum.