Multistorey Mayhem is a checkpoint sub-mission in Grand Theft Auto III, one of four in the game and a mandatory mission to achieve 100% completion in the game. The sub-mission is set in the Newport Multistory Car Park in Staunton, Liberty City and is activated by entering any Stallion located inside the car park (including one the player drives in). From that point on, the player must reach a total of 20 checkpoints located on the various parts of the car park in 2 minutes. The challenge lies in the fact that the checkpoints are located between pillars and in odds corners, requiring good maneuverability of the Stallion. The player may fail the mission if they exit or destroy the Stallion, or simply run out of time.