| Landlocked Countries Quiz | 0 | - | 4.99 | 317,474 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,461,456 |
| Countries on the Equator | 0 | - | 4.82 | 132,505 |
| Members of the Arab League | 0 | - | 4.82 | 59,252 |
| Sahara Desert Countries | 0 | - | 4.97 | 125,129 |
| Himalayan Countries | 0 | - | 4.95 | 102,461 |
| Andean Countries | 0 | - | 4.90 | 56,923 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 57,768 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,569 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 101,887 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,550 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,733 |
| Danube Countries | 0 | - | 4.97 | 56,363 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,402 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,594 |
| Countries with the Best Passports | 0 | - | 4.87 | 70,333 |
| Countries with the Worst Passports | 0 | - | 4.86 | 48,776 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,392 |
| European Landlocked Countries | 0 | - | 4.99 | 114,838 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,765 |
| Countries with the Most Species | 0 | - | 4.99 | 89,083 |
| Countries 197 to 205 | 0 | - | 4.88 | 55,825 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,437 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,812 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,758 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,117 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,453 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,686 |
| Countries in the Alps | 0 | - | 4.82 | 101,818 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,631 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 85,793 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,124 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,718 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,364 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 86,866 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,045 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,759 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,071 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,151 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 68,910 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,333 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,415 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 94,971 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,498 |
| Countries with the Most Grassland | 0 | - | 4.93 | 68,973 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,604 |
| Countries with the Most Climate Zones | 0 | - | 4.97 | 60,949 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 52,951 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 192,731 |
| World Countries - Blind Typing | 0 | - | 5.00 | 71,371 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 41,957 |
| Largest Countries By Category | 0 | - | 4.96 | 143,884 |
| Countries by Countries | 0 | - | 4.96 | 54,083 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,378 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 77,333 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,018,341 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,560 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 351,743 |
| Island Countries Quiz | 0 | - | 4.99 | 638,721 |
| Biggest Countries by Area | 0 | - | 5.00 | 924,739 |
| Northernmost Countries | 0 | - | 4.99 | 325,314 |
| Countries of South America | 0 | - | 5.00 | 783,667 |
| Countries of Oceania | 0 | - | 5.00 | 881,972 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,108,682 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,551,450 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,142 |
| Countries with Megacities | 0 | - | 4.99 | 194,774 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,467 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,857 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,695 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,702 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,060 |
| Countries by Official Language | 0 | - | 4.95 | 153,491 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 246,727 |
| Countries in their Native Language | 0 | - | 4.98 | 176,996 |
| Independence from Whom | 0 | - | 4.99 | 183,338 |
| Subdivisions by Country | 0 | - | 4.82 | 46,181 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 111,886 |
| Megadiverse Countries | 0 | - | 4.96 | 124,751 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 89,965 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 106,010 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,127 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 130,082 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 48,617 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 76,612 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,316 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,499 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 40,980 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 42,856 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,818 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,366 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,488 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 67,932 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,742 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 80,084 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,758 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,330 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,101 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,057 |
| Countries With the Most Languages | 0 | - | 4.90 | 171,571 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.92 | 86,562 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 70,875 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,456 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,303 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,843 |
| Widest Countries East to West | 0 | - | 4.93 | 118,720 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,680 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 157,887 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,099 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,787 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 117,649 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,514 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,259 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,859 |
| Countries with Double Letters | 0 | - | 4.96 | 66,890 |
| Countries that End in N | 0 | - | 4.94 | 131,353 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 227,830 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 185,624 |
| Countries with W | 0 | - | 4.97 | 121,639 |
| Countries with Z | 0 | - | 4.98 | 242,424 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,591 |
| Countries That End in U | 0 | - | 4.94 | 106,942 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 88,311 |
| Countries that End in O | 0 | - | 4.92 | 146,377 |
| Countries that End in R | 0 | - | 4.86 | 96,117 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,865 |
| Countries Ending in "IA" | 0 | - | 4.99 | 169,569 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 154,874 |
| Countries by Last Two Letters | 0 | - | 4.90 | 115,583 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 128,503 |
| Countries That End in Y | 0 | - | 4.90 | 160,807 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 159,641 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 119,832 |
| Countries that End in I | 0 | - | 4.92 | 114,157 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 148,408 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 87,816 |
| Countries That End in NIA | 0 | - | 4.93 | 100,327 |
| Countries That End in BIA | 0 | - | 4.91 | 125,363 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 152,382 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,045 |
| Countries That End in RIA | 0 | - | 4.89 | 100,464 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 99,755 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 198,711 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 118,652 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 109,444 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 76,374 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 91,548 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 95,919 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 42,388 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 39,793 |
| Countries that End in L | 0 | - | 4.95 | 133,364 |
| "Land" Countries | 0 | - | 4.98 | 287,908 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 187,764 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,073 |
| City to Country Quiz #1 | 0 | - | 4.94 | 133,703 |
| City to Country Quiz #3 | 0 | - | 4.86 | 99,478 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,093 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 206,226 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 157,423 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 115,681 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 131,623 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 191,996 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 139,974 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 65,436 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,665 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 81,893 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,499 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,302,117 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,539 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,035,277 |
| One Border Countries | 0 | - | 4.98 | 406,604 |
| Countries With One Word and Three A's | 0 | - | 4.84 | 30,213 |
| Top-Producing Countries | 0 | - | 4.71 | 99,600 |
| Country Codes Quiz | 0 | - | 4.44 | 76,622 |
| Separatist Movements | 0 | - | 4.45 | 42,393 |
| Prime Meridian Countries | 0 | - | 4.64 | 51,730 |
| Next Country Alphabetically | 0 | - | 4.75 | 68,226 |
| Westernmost Countries | 0 | - | 4.50 | 47,299 |
| Easternmost Countries | 0 | - | 4.76 | 60,208 |
| Countries With the Most ISIS Fighters | 0 | - | 4.56 | 36,840 |
| Top 10 Most Famous Island Countries | 0 | - | 4.66 | 97,745 |
| Indochina Countries | 0 | - | 4.72 | 62,526 |
| Atlantic Ocean Island Countries | 0 | - | 4.55 | 62,844 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 90,430 |
| Highest Foreign Aid Recipients | 0 | - | 4.58 | 42,248 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 54,992 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.76 | 45,740 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 42,374 |
| Countries that are the Source of Refugees | 0 | - | 4.66 | 56,084 |
| Most Populous Countries By Category | 0 | - | 4.64 | 60,979 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 41,709 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.66 | 44,599 |
| Flyover Countries | 0 | - | 4.72 | 35,648 |
| Top 50 Countries by Area - In Order | 0 | - | 4.75 | 66,176 |
| Countries with the Most Coral Reefs | 0 | - | 4.65 | 37,305 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 41,813 |
| Most Recent Countries to Join the United Nations | 0 | - | 4.53 | 31,713 |
| Countries by Total Area of Bordering Countries | 0 | - | 4.79 | 49,097 |
| Countries with the Most Light Pollution | 0 | - | 4.53 | 43,997 |
| Present-Day Communist Nations | 0 | - | 4.49 | 43,038 |
