The game emphasizes Batman's detective skills; for example, he can scan a crime scene with Detective Vision (displayed in first-person perspective) to highlight points of interest; holograms act out theoretical scenarios of the crime. The crimes can be reviewed via Batman's link to the Batcomputer in the Batcave; this allows a player to view virtual recreations of the scene from different angles (with the ability to move back and forth through the crime's timeline), view it in slow motion or pause while looking for clues to solve the crime. Small (and large) crime scenes are distributed throughout Gotham City. Reviewing the downing of a helicopter, Batman is presented with false and accurate clues; investigation of the scene can reveal that the helicopter was shot, allowing Batman to trace the bullet's trajectory to a murdered police officer and another crime scene. When a crime is solved, the player is shown a Batman-narrated rundown of the crime. The Batcave is also a hub where Batman can change costumes, upgrade his equipment and access challenge maps to practice combat (these maps were accessed separately in previous games). After completing the story mode a New Game Plus mode is unlocked, enabling a player to replay the game with all their acquired gadgets, experience and abilities; enemies are tougher, and the icon warning players of attack is disabled. Completing New Game Plus unlocks I Am the Night mode, where the game ends if Batman dies.