GeotchaA geography quiz on a real globe

25 largest cities in the tropics

25 cities, each one drawn on a satellite globe. Name it when it lights up, find it when you are given its name, or type every one you can remember in Name all.

Free to play, with no account needed. What you miss comes back for review until it sticks.

The cities

  1. 1Guangzhou43 M
  2. 2Jakarta29.8 M
  3. 3Mumbai28.1 M
  4. 4Manila27.1 M
  5. 5Mexico City25.6 M
  6. 6Bangkok22.4 M
  7. 7Lagos21.9 M
  8. 8Kolkata18.1 M
  9. 9Kinshasa16.9 M
  10. 10Bengaluru15.3 M
  11. 11Ho Chi Minh City14.7 M
  12. 12Rio de Janeiro13.6 M
  13. 13Chennai13.3 M
  14. 14Lima12.2 M
  15. 15Hyderabad12.1 M
  16. 16Bogotá10.8 M
  17. 17Luanda10.4 M
  18. 18Ahmedabad10.2 M
  19. 19Kuala Lumpur9.8 M
  20. 20Surat8.4 M
  21. 21Pune8.3 M
  22. 22Singapore8.2 M
  23. 23Shantou8.1 M
  24. 24Hanoi7.6 M
  25. 25Hong Kong7.5 M

Population of the metro area: the city and the places continuously built up around it, as Thomas Brinkhoff’s Major Agglomerations of the World (citypopulation.de) counts them from censuses projected to 1 January 2026, the list most rankings use. It covers every agglomeration of 1 million or more; a smaller city ranks by its GHSL urban centre (2025), or by its city-proper figure where GHSL’s centre is far larger than the list allows. A city inside another city’s metro area (Giza in Cairo’s, Pretoria in Johannesburg’s) is not ranked on its own. The tropics: between the Tropic of Cancer and the Tropic of Capricorn (23.44° N to 23.44° S). Sources: GeoNames (CC BY 4.0), GHSL UCDB R2024A (CC BY 4.0), Thomas Brinkhoff: Major Agglomerations of the World, citypopulation.de, Wikidata names (CC0).

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