| Taken | Quiz |
|---|---|
| 29,408 | World Capitals Containing Each Letter A-Z |
| 8,778 | World Capitals Containing K |
| 7,770 | World Capitals Containing B |
| 7,270 | World Capitals Containing U |
| 6,824 | World Capitals Containing G |
| 6,793 | World Capitals Containing the Letter O |
| 6,657 | World Capitals Containing I |
| 6,464 | World Capitals Containing R |
| 6,357 | World Capitals Containing C |
| 6,351 | World Capitals Containing the Letter S |
| 5,973 | World Capitals Containing the Letter N |
| 5,875 | World Capitals Containing A |
| 5,860 | World Capitals Containing E |
| 5,837 | World Capitals Containing the Letter T |
| 5,780 | World Capitals Containing P |