| Takes | Quiz | Points | Best |
|---|---|---|---|
| 33 | Three Longest Rivers in Mongolia | - | - |
| 101 | 5 Longest Rivers in the Middle East | - | - |
| 56 | 6 Longest rivers in East Africa | - | - |
| 112 | 7 Longest Rivers in Southern Africa | - | - |
| 65 | 10 Longest Rivers in Central Asia | - | - |
| 182 | 10 Longest Rivers in India | - | - |
| 77 | 15 Longest rivers in Central Africa | - | - |
| 279 | 25 World Cities, 25 World Rivers #1 | - | - |
| 100 | Great Lakes and St. Lawrence Waterways Quiz | - | - |
| 141 | Longest River in Every State | - | - |
| 23 | Longest Rivers in North Korea | - | - |
| 36 | Longest Rivers in South Korea | - | - |
| 39 | Longest Rivers in West Africa | - | - |
| 163 | Longest Rivers in Western Europe | - | - |
| 45 | North American Rivers Forming Country Borders | - | - |
| 186 | River by World Capital | - | - |
| 137 | Three Longest Rivers in Every State | - | - |
| 66 | Which River in South America? | - | - |