But the biggest thing of all is the setting. The most important thing about Arkham City is Arkham City: the Asylum worked fine for a one-shot, but Batman's natural home is on the streets and roofs of Gotham. Skyscrapers next to burned-out crack dens, dingy alleyways, wrecked cars, dead-eyed muscle... and a cry for help from somewhere dark. That's Batman. You can almost hear the music swell.