| Takes | Quiz | Points | Best |
|---|---|---|---|
| 218 | Closest Capitals by Lake Quiz | - | - |
| 524 | Countries Named After Rivers | - | - |
| 305 | Countries of the Biggest Lakes That Border Several Countries | - | - |
| 1,200 | Huge List of U.S. Bodies of Water | - | - |
| 223 | Lake Superlatives Quiz | - | - |
| 444 | Lakes by Country | - | - |
| 328 | Lakes - Multiple Choice | - | - |
| 234 | Lakes on Borders | - | - |
| 76 | Longest Tributaries of the Amazon River | - | - |
| 250 | Random Lakes by Clue | - | - |
| 1,033 | River Delta by Country #1 | - | - |
| 210 | River Delta by Country #2 | - | - |
| 35 | River Delta by Country #3 - Hard Version | - | - |
| 590 | Rivers by Satellite | - | - |
| 33,478 | Rivers in History | 0 | - |
| 313 | Which African Lake? | - | - |
| 97 | Which Asian Lake? | - | - |
| 492 | Which European Lake? | - | - |