In the year 2051, humans have depleted the environmental resources of the Earth. Ensuing natural disasters eventually led to a global conflict powered by three organizations: the technologically powerful UCA (United Continents of America), the science-oriented ASF (Asian Federation), and the shady SBL (Southern Block), with Europe trying to stay out of the war.
Mayday: Conflict Earth is a real-time strategy game. Players select one of the factions and commands an entirely mechanized army, which includes automatized tanks, cyborgs, and other non-human personnel. There is no resource harvesting in the game, and money is awarded gradually as the player completes missions. There is also no construction, with the buildings already available, requiring the player only to assign their position on the map.