Empire Earth Expansion: The Art of Conquest - PC All-new units and gameplay choices - Set up Space docks, orbital space stations and advanced defense mechanisms Lead the new new Martian colonies in their fight for independence for the Earth Play two new civilizations - Japan and Korea -- guide them through medieval time, past World War II and the Korean Conflict, and try leading them into the stars Brand new campaigns set in the days of the Roman Empire and World War II and the far future -- see if you can conquer the final frontier - Space.