| Countries in World War II | 914,582 | 0 | - |
| Countries with the Most Tourists Quiz | 407,226 | 0 | - |
| Landlocked Countries | 421,948 | 0 | - |
| Majority Muslim Countries | 375,470 | 0 | - |
| Spanish-Speaking Countries | 375,493 | 0 | - |
| Countries with the Most Billionaires | 335,910 | 0 | - |
| Category Elimination - Countries #1 | 321,691 | 0 | - |
| Countries with Five Letters | 282,441 | 0 | - |
| Commonwealth of Nations Countries | 237,662 | 0 | - |
| Axis Occupied Countries of WWII | 229,334 | 0 | - |
| Countries with Megacities | 264,544 | 0 | - |
| Category Elimination - Countries #3 | 225,566 | 0 | - |
| Countries with Six Letters | 213,541 | 0 | - |
| Countries Ending in "IA" | 209,069 | 0 | - |
| Countries in their Native Language | 199,037 | 0 | - |
| Countries that End in O | 159,504 | 0 | - |
| Countries that End in N | 171,107 | 0 | - |
| Countries of Europe by Population | 181,404 | 0 | - |
| Countries That End in RIA | 126,801 | 0 | - |
| African Countries with the Shortest Names | 153,804 | 0 | - |
| Countries with Cardinal Directions in Their Names | 152,846 | 0 | - |
| Countries by Last Two Letters | 135,466 | 0 | - |
| Countries with Same-Sex Marriage | 110,170 | 0 | - |
| Top 20 Longest One-Word Country Names | 134,449 | 0 | - |
| Countries With an "Ish" Demonym | 117,013 | 0 | - |
| Monarchies of Europe | 98,333 | 0 | - |
| Countries with the Most Airports | 99,242 | 0 | - |
| Countries with the Highest Taxes | 87,632 | 0 | - |
| Countries that Visit the United States the Most | 91,973 | 0 | - |
| Groups of Countries that Start with the Same 3 Letters | 91,663 | 0 | - |
| Biggest British Empire Countries | 100,174 | 0 | - |
| Next Country Alphabetically | 86,285 | 0 | - |
| Countries With an "Ese" Demonym | 86,420 | 0 | - |
| Countries with Multiple Populous Islands | 95,655 | 0 | - |
| Tropical Rainforest Countries | 82,170 | 0 | - |
| Countries with the Most Tourists Per Capita | 82,128 | 0 | - |
| Three Most Populous Countries By Each Letter | 89,817 | 0 | - |
| Countries by Consonants | 78,730 | 0 | - |
| Biggest Import Partners By Country | 78,641 | 0 | - |
| Most Guessed Cities by Country #2 | 79,608 | 0 | - |
| Most Populous Countries by Year | 110,859 | 0 | - |
| Countries as U.S. First Names | 78,096 | 0 | - |
| Countries Less Populous Than Their Neighbors | 81,538 | 0 | - |
| Most Populous Modern-Day Countries in 1000 AD | 76,297 | 0 | - |
| Countries with the Largest Exclusive Economic Zone | 73,226 | 0 | - |
| Smallest Countries Bordering Each Other | 92,901 | 0 | - |
| Click All the Countries on a Borderless World Map | 152,968 | - | - |
| Country Boggle | 64,871 | 0 | - |
