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12/5/2017 – Here’s an update on the upcoming relaunch.
First choose the number of cities by typing ‘100’, ‘250’, ‘500’, ‘1k’, ‘2.5k’, ‘5k’ or ‘all’ – then try to achieve the highest population among the top World 50K+ population cities you chose. Quiz is not timed. You may have to wait a moment for markers to load for 1k and above. Map is only zoomable to a certain level, otherwise city labels would appear.