The object of this quiz is to fill in each blank flag with the correct colors for that country. When you click START you will be shown a country and 12 colors on the right, these include the flag's color and random colors not in that flag. Click on colors that represent at least 5% of that country's flag. If you click a correct flag color it will fill in on the flag and that color box will get a green border. An incorrect color will show with a red border. Complete all the colors in the flag to move on to the next country. Completing 10 countries will end the quiz.
You get points for correct answers and minus points for incorrect answers. Correct answer points vary based on the number of flag colors, flags with more colors can have a higher possible point total.
Quiz Takers 
Curious why the second Indian city is Mira Bhayandar and not Thane?
Per typing in Thane on Google Maps, it looks like the eastern part of the city is not on the island.
1) Of the five boroughs of New York City, only The Bronx is not entirely located on islands. I say it should count.
2) While the majority of Hong Kong’s residents do live on the mainland, if you only counted the island population of Hong Kong, it would still make the top 40 overall.
3) Same goes for Xiamen (Huli + Siming = 2.1 million).
4) I don’t believe any part of Zhongshan is on an island.
I want to include cities entirely on islands. Also it appears Zhongshan is entirely on a river island (Zhongshan island).
Geoje(South Korea) is also a city located on an island.
will add, thanks.
Would you consider doing one that’s largest cities above a certain altitude?
it’s tough because largest cities can cover a large span of altitude
Venice is a curious case… the city center is definitely on an island but the majority of the population of the Venice commune is found mainland. A little known fact I think.
Yes, I guess it’s a good criteria.