| Takes | Quiz | Points | Best |
|---|---|---|---|
| 54 | Largest cities of the Baltic Sea drainage basin on a map | - | - |
| 28 | Largest cities of the Danube river basin on a map | - | - |
| 91 | Largest cities of the Rhine river basin on a map | - | - |
| 63 | Largest cities of the Saint-Lawrence river basin on a map | - | - |