| Takes | Quiz | Points | Best |
|---|---|---|---|
| 19,026 | 100 Biggest Cities in China on a Map | - | - |
| 2,447 | 200 Largest Cities in 2100 | - | - |
| 287 | Largest Chinese Cities With English Spelling | - | - |
| 504 | Largest Cities in the Caribbean | - | - |
| 35,409 | Largest Cities in the World if all the Ice Melts on a Map | 0 | - |
| 769 | Megacities in the World in 2050 Based on Current Growth Rates | - | - |
| 356 | Megacities of the World In 2050 | - | - |
| 467 | Megacities of the World in 2075 | - | - |
| 247 | Municipalities of Rhode Island on a Map | - | - |
| 462 | Third Largest Cities in Each Country | - | - |