The surface of New York City is iconic, sure, but its underside is something even better: mythic. That’s where blind albino alligators grow massive in the dark, where leaking steam pipes vent through manholes, where the Mole People live, where rats larger than dogs flood tunnels in devouring hordes, where trains stop at secret doors, and there are more ghosts than you can shake a P.K.E. Meter at. So I’m delighted to see Ubisoft’s first paid expansion for The Division [official site] is out now to explore down there. I’m sure it will have all of those verifiable true things.