First choose any country by typing it and choosing from the drop-down box – then, double-click on the marker for each of the top 50 largest 10K+ cities (or less if there aren’t 50) in that country as they come up. Markers will all be red to begin. Clicking on a the correct shown city will turn the marker green. Clicking on the incorrect city will cause no change in the markers.
Note – you may want to zoom in on markers which are close to one another to make sure you click on the correct marker.
If red markers do not appear after you choose a state try reloading the quiz.
Countries with less than 5 10K+ cities not included in this quiz – they are Monaco, San Marino, Andorra and Vatican City.