The usage of the Bat-Signal as a waypoint continues in the prequel Batman: Arkham Origins (2013) and Batman: Arkham Knight (2015), though the signal itself appears in the latter game. In Arkham Knight, the Bat-Signal is seen in the sky of Gotham City at the start of the game as Commissioner Gordon's way of contacting Batman, with the signal itself being the subject of a Riddler Challenge and a way of activating the Knightfall Protocol. After activating Knightfall, the signal blows up in a self-destruct option (added by Lucius Fox) after Batman saves the whole city, with its remains being inspected by Nightwing in a downloadable content.