The Batman Arkham franchise has grown to become an extensive series with a timeline that glides its way through 5 mainline games, a handful of spin-offs, a plethora of tie-in comic books, a novel, a VR experience, and a movie. But how does everything tie together? The Batman Arkham franchise has grown to become an extensive series with a timeline that glides its way through 5 mainline games, a handful of spin-offs, a plethora of tie-in comic books, a novel, a VR experience, and a movie. But how does everything tie together?