Type 'easy' or 'hard' to begin the quiz. Easy is a 15-degree grid, hard is a 10-degree grid. Then, name any 50K+ World city in each grid square which fits the category label for each square. Grid will be randomly placed each time the quiz is played.
LETTER: means the city starts with that letter.
NUMBER RANGE: (such as 2-5, 10+) means the city contains that many letters (excluding spaces and special characters).
POPULATION RANGE: (such as 250-500K) means the city has that range for its population.
2+ WORDS means the city name has 2 or more words (words denoted by a space or hyphen).
At the end of the quiz the largest population missed answer will show in each square.
Quiz Takers 
A few things on this one: St Petersburg (Florida) shouldn’t be in the quiz like its Russian counterpart isn’t. But this last one appears on the European one and shouldn’t either if you want to keep consistent and spell the word Saint. Tlalnepantla de Baz (Mexico) shouldn’t also be here. What should be here is Cagayan de Oro (Philippines) and not on the 7-word quiz as it is. Ufff…
fixing – St Petersburg, RU will be added to this – I use ‘St’ as the spelling in US/Russia when that’s how it is spelled typically on Wikipedia and the like…French cities, etc use ‘Saint’.
Ok, seems fair.