Call of Duty: Modern Warfare's sixth season will add a subway system to Verdansk that will become the fastest way to get around the battle royale's map. As shown in the season six cinematic trailer for Call of Duty: Modern Warfare, the Verdansk Subway System, locally known as the Metro, was brought back to life by Farah and Nikolai to search for "Al-Qatala members hiding underground." When the Metro becomes available, it will allow players to quickly travel between Verdansk Int.