The damage caused by the long wars led both world powers to evacuate the population to recently built underground cities.
The general opinion was that these continents would forever remain uninhabitable, and they were wiped from every map. More than 50 exciting missions, an unprecedented AI, more than 100 ground units, mechs, flying units and ships, strategic orders like formations, escorts and others make Earth 2140 a high class product. Australia and most parts of Africa were sacrificed during the long wars, which lasted several decades. Highly toxic biological and chemical weapons were developed on these continents, leaving them so badly contaminated, that no human life can survive there.