| Taken | Quiz |
|---|---|
| 1,393,058 | Countries With the Highest Population |
| 367,231 | Smallest Countries by Population and Area |
| 300,744 | Top 50 Countries by Population - In Order |
| 295,429 | Most Populous Countries A-Z |
| 259,340 | Five Most Populated Countries by Continent |
| 222,324 | Top 10 Most Populous European Countries |
| 216,276 | Most Populous Countries in 2050 |
| 181,519 | Largest Countries by Area or Population |
| 174,972 | Top 10 Most Populous Asian Countries |
| 171,636 | Top 10 Most Populous African Countries |
| 169,237 | Most Populous Countries in 1900 |
| 167,399 | Countries of Europe by Population |
| 167,031 | Least Populous Countries A-Z |
| 164,865 | Countries with the Lowest Population Density |
| 162,522 | Countries More Populous Than Their Neighbors |