The game is presented from a third-person perspective, with a primary focus on Batman's melee combat, stealth abilities, detective skills, and gadgets. 

Batman can freely move around the open world of Gotham City, interacting with characters and undertaking missions, and unlocking new areas by progressing through the main story or obtaining new equipment. The player is able to complete side missions away from the main story to unlock additional content and collectible items. 

Combat focuses on chaining attacks together against numerous foes while avoiding damage, while stealth allows Batman to conceal himself around an area, using gadgets and the environment to silently eliminate enemies. Arkham Knight introduces the Batmobile as a playable vehicle, which is used for transportation, puzzle solving and combat.

Development on Arkham Knight began in 2011 after completion of Arkham City and took place over four years. Rocksteady opted to use its own writers for the main story with collaboration by comic book writer Geoff Johns, choosing to replace Paul Dini who had worked on Arkham Asylum and Arkham City. The introduction of the Batmobile required a change in the team's design methodology, as the previous games' city designs were too narrow and confined to allow smooth travel for the vehicle.