Mappers in the Wild IV (a.k.a. MITW IV, or Mappers in the Wild 4 (MITW4)) was the fourth map game in the Mappers in the Wild series. It is the first to officially use Roman numerals instead of normal numbers. It started on June 20, 2015, as MITW 3 was dying. It died on July 1, 2015, only 11 days later, since it was very active and went through its life cycle quite quickly.