Name the ten most populous cities on the planet. The ranking is by metropolitan area — the whole continuous urban region, not just the population inside official city limits. That's the fairest way to compare cities, and it's why the number one answer holds around 37 million people, more than the entire population of Canada.
Asia dominates this list hard: seven of the ten are Asian, and three countries each place two cities. If your mental map of megacities stops at the famous Western capitals, this quiz will recalibrate it.
How to play
Pins are hidden — a dot on the map would give the city away. You work from a numbered 1–10 rail, and each city lands on the map as you guess it.
Start typing anywhere; the answer bar catches it automatically.
Historic and alternate names are accepted — "Bombay" works for Mumbai, for example.
The timer counts up; give up reveals the remaining cities and logs your score.
What counts in this quiz
Exactly 10 cities, ranked by metropolitan-area population (approximate current estimates).
Metro area means the full contiguous urban agglomeration — suburbs and connected sprawl included.
Tokyo tops the list at roughly 37 million.
What's not included — and why
Chongqing doesn't appear even though its municipality claims 30+ million people — that administrative boundary covers a rural region the size of Austria, so its actual urban area falls short of the top 10.
City-proper rankings would produce a different list entirely; this quiz deliberately doesn't use them because official city limits vary wildly between countries.
Good to know
Greater Tokyo has been the world's largest metro area for over half a century — though Delhi is projected to overtake it within the decade.
India, China, and Japan each place two cities in the top 10.
The UN counts more than 30 megacities (10 million+ people) worldwide today; every city on this list clears that bar roughly twice over.