Finally, Arkham Knight takes place in Gotham proper as a character with the same name as the game shows up with a militia. Players can control Batman and Catwoman at various points in the story. The sequel Arkham City involves Batman facing down the Joker again, only this time it takes place in “Arkham City.” This is a condemned section of Gotham city walled off and used a prison by Hugo Strange. Batman has to stop the Joker as well as other villains like Poison Ivy, Bane, and a host of others. It turns out that this is all part of the Joker’s plan to take down the Batman. Batman returns to the Joker to the famous asylum just as his goons and henchmen are moved there from Blackgate prison.
In this game, Arkham Asylum exists on an island separated from Gotham City proper. Rocksteady games changed the, well, game when they introduced the first of their series Arkham Asylum.