First choose a level by typing ‘beg’, ‘int’, ‘adv’ or ‘exp’ – beginner is 10,000,000, intermediate is 5,000,000, advanced is 1,000,000 and expert 500,000. Then, begin naming cities. All cities of 10K+ population starting with the city you chose and moving outward will begin filling in until you’ve hit a total population equal to or greater than your chosen level’s threshold. For example, if you choose ‘int’ – the threshold is 5 million. If you choose ‘tunis’, then Tunis will fill in and because its population is under 5 million, successive cities moving outward from Tunis will fill in until the total population reaches at least 5 million. If you chose Lagos, only it would fill in as its population already meets your threshold.

hugequiz Premium members will see the 25 largest missed cities at the end of the quiz as large, purple markers.

Premium members can now also play a 3-hour time limit ‘custom’ coverage quiz of any population from 250,000 to 25,000,000, simply enter the population followed by a ‘.’ instead of choosing from one of the four levels, i.e. ‘750000.’ Quiz score is not recorded for the custom coverage option.