Warzone 2100 USA

In the year 2080, the North American Strategic Defense Agency (NASDA) was formed to protect North America from nuclear attacks. A year later NASDA began building a satellite defense system that was designed to control all aspects of nuclear threat. However, during a routine system check the NASDA satellite system malfunctioned and launched nuclear strikes on all major cities of the world. The targeted countries quickly launched a counterstrike and the NASDA system failed to defend against the incoming missiles. Nuclear Winter covered the Earth.