Choose a level by typing ‘beg’, ‘int’, ‘adv’, or ‘exp’ – then name any city of 50K+ population within each square. Beg level is 15 degree squares, Int is 10 degrees, Adv 5 degrees, and Exp is 2.5 degrees. Map may take a minute to display grid on adv and exp levels. When you reach 160 countries you will see the remaining ones left to complete.