| Takes | Quiz | Points | Best |
|---|---|---|---|
| 488 | Biggest Cities in the Great Basin on a Map | - | - |
| 2,890 | Danube River Basin Countries on a Map | - | - |
| 720 | Great Basin States on a Map | - | - |
| 1,659 | Mississippi Basin Rivers on a Map - Extreme | - | - |
| 1,525 | Mississippi-Missouri Basin States and Provinces | - | - |
| 50,774 | Nile River Basin Countries on a Map | 0 | - |
| 522 | States with the Most Land in the Mississippi Basin | - | - |