Batman: Arkham Knight is an action-adventure game set within an open world Gotham City, which can be explored freely by the player from the beginning of the game, allowing them to travel seamlessly anywhere within its boundaries.Many of the gadgets and the gameplay elements from the previous Arkham games return, including the grapnel gun, line launcher, batarangs, the countering system, Detective Vision, and the Remote Hacking Devicen.The Disruptor receives upgrades from previous games, becoming a rifle that can be used to disable or detonate enemy weapons and drone turrets, boobytrap weapon crates to shock enemies who attempt to arm themselves, and tag vehicles for Batman to track .The remote controlled batarang is upgraded as well to include a scanner that can be thrown out to gain additional information on the surrounding.