| Clue | City | % Correct |
|---|---|---|
| The biggest city by urban area population, and by metropolitan area population | Tokyo | 100%
|
| The biggest city (by most measures) in the largest metropolis | Guangzhou | 83%
|
| 1830s | London | 83%
|
| Predicted to be the biggest city by 2028 | Delhi | 75%
|
| 1920s-60s | New York | 75%
|
| 1st century AD | Rome | 75%
|
| 6th century | Constantinople | 67%
|
| The biggest by city proper (ie, the local government district) when non-connected towns are removed from the count | Shanghai | 67%
|
| 12th century | Baghdad | 50%
|
| Predicted to be the biggest city by 2100 | Lagos | 50%
|
| 15th century | Jinling(Nanjing) | 42%
|
| Predicted to be the biggest city by 2050 | Mumbai | 42%
|
| The biggest, according to estimates, from around: 500 BC | Babylon | 33%
|
| 16th century | Beijing | 33%
|
| Forecast to become the most populous metropolitan area by 2030 | Jakarta | 33%
|
| Predicted to be the biggest city by 2075 | Kinshasa | 33%
|
| The biggest (by urban area population) in the largest metropolis | Shenzhen | 33%
|
| 200 BC | Alexandria | 25%
|
| 14th century | Hangzhou | 25%
|
| 7th century | Daxing(Chang'an) | 17%
|