| Countries in World War II | 920,706 | 0 | - |
| Countries with the Most Tourists Quiz | 410,619 | 0 | - |
| Landlocked Countries | 427,682 | 0 | - |
| Majority Muslim Countries | 378,665 | 0 | - |
| Spanish-Speaking Countries | 377,167 | 0 | - |
| Countries with the Most Billionaires | 337,483 | 0 | - |
| Category Elimination - Countries #1 | 324,559 | 0 | - |
| Countries with Five Letters | 284,828 | 0 | - |
| Commonwealth of Nations Countries | 238,667 | 0 | - |
| Axis Occupied Countries of WWII | 230,842 | 0 | - |
| Countries with Megacities | 268,159 | 0 | - |
| Category Elimination - Countries #3 | 227,564 | 0 | - |
| Countries with Six Letters | 215,102 | 0 | - |
| Countries Ending in "IA" | 210,256 | 0 | - |
| Countries in their Native Language | 200,036 | 0 | - |
| Countries that End in O | 160,422 | 0 | - |
| Countries that End in N | 172,770 | 0 | - |
| Countries of Europe by Population | 183,802 | 0 | - |
| Countries That End in RIA | 127,193 | 0 | - |
| African Countries with the Shortest Names | 155,051 | 0 | - |
| Countries with Cardinal Directions in Their Names | 153,477 | 0 | - |
| Countries by Last Two Letters | 136,297 | 0 | - |
| Countries with Same-Sex Marriage | 110,772 | 0 | - |
| Top 20 Longest One-Word Country Names | 135,539 | 0 | - |
| Countries With an "Ish" Demonym | 117,871 | 0 | - |
| Monarchies of Europe | 99,084 | 0 | - |
| Countries with the Most Airports | 100,545 | 0 | - |
| Countries with the Highest Taxes | 87,787 | 0 | - |
| Countries that Visit the United States the Most | 92,652 | 0 | - |
| Groups of Countries that Start with the Same 3 Letters | 92,483 | 0 | - |
| Biggest British Empire Countries | 100,637 | 0 | - |
| Next Country Alphabetically | 86,503 | 0 | - |
| Countries With an "Ese" Demonym | 87,019 | 0 | - |
| Countries with Multiple Populous Islands | 96,206 | 0 | - |
| Tropical Rainforest Countries | 82,416 | 0 | - |
| Countries with the Most Tourists Per Capita | 82,366 | 0 | - |
| Three Most Populous Countries By Each Letter | 91,414 | 0 | - |
| Countries by Consonants | 79,015 | 0 | - |
| Biggest Import Partners By Country | 79,091 | 0 | - |
| Most Guessed Cities by Country #2 | 80,567 | 0 | - |
| Most Populous Countries by Year | 111,720 | 0 | - |
| Countries as U.S. First Names | 78,603 | 0 | - |
| Countries Less Populous Than Their Neighbors | 82,520 | 0 | - |
| Most Populous Modern-Day Countries in 1000 AD | 76,643 | 0 | - |
| Countries with the Largest Exclusive Economic Zone | 73,704 | 0 | - |
| Smallest Countries Bordering Each Other | 93,280 | 0 | - |
| Click All the Countries on a Borderless World Map | 164,963 | - | - |
| Country Boggle | 65,023 | 0 | - |
