| Landlocked Countries Quiz | 0 | - | 4.99 | 375,826 |
| Countries of the World Quiz | 0 | - | 5.00 | 43,796,916 |
| Sahara Desert Countries | 0 | - | 4.98 | 142,415 |
| Himalayan Countries | 0 | - | 4.95 | 119,362 |
| Andean Countries | 0 | - | 4.92 | 66,947 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 55,429 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 110,935 |
| Coffee Producing Countries | 0 | - | 4.81 | 58,515 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 58,147 |
| Danube Countries | 0 | - | 4.97 | 60,068 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 95,812 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 81,123 |
| Countries with the Best Passports | 0 | - | 4.81 | 78,775 |
| Countries with the Worst Passports | 0 | - | 4.92 | 61,776 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 135,141 |
| European Landlocked Countries | 0 | - | 4.99 | 140,282 |
| Partially Recognized Countries | 0 | - | 4.98 | 96,728 |
| Countries with the Most Species | 0 | - | 4.99 | 91,841 |
| Countries 197 to 205 | 0 | - | 4.87 | 62,164 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 46,371 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 45,496 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 51,912 |
| Countries that Use the Peso | 0 | - | 4.84 | 49,052 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 69,461 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 52,930 |
| Countries in the Alps | 0 | - | 4.86 | 109,300 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 89,930 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 96,248 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 74,829 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 82,744 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 109,781 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 91,277 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 94,218 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 49,236 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 47,495 |
| Countries with the Most Container Port Traffic | 0 | - | 4.91 | 58,142 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 72,242 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 50,821 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 38,705 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 99,533 |
| Arctic Ocean Countries | 0 | - | 4.94 | 75,234 |
| Countries with the Most Grassland | 0 | - | 4.93 | 72,884 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 107,429 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 64,286 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 56,213 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 218,871 |
| World Countries - Blind Typing | 0 | - | 5.00 | 83,166 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 44,560 |
| Largest Countries By Category | 0 | - | 4.97 | 150,282 |
| Countries by Countries | 0 | - | 4.96 | 57,880 |
| Country Flags with the Most White | 0 | - | 4.87 | 130,488 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,409 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 83,077 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,347,608 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,423,743 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 357,538 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 378,848 |
| Island Countries Quiz | 0 | - | 4.99 | 686,672 |
| Biggest Countries by Area | 0 | - | 5.00 | 982,077 |
| Northernmost Countries | 0 | - | 4.99 | 340,674 |
| Countries of South America | 0 | - | 5.00 | 852,081 |
| Countries of Oceania | 0 | - | 5.00 | 963,289 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,705,777 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 156,441 |
| Countries with Megacities | 0 | - | 4.99 | 215,483 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 185,005 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 105,324 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 123,816 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 72,155 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 267,313 |
| Countries by Official Language | 0 | - | 4.95 | 182,559 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.90 | 279,949 |
| Countries in their Native Language | 0 | - | 4.98 | 187,446 |
| Independence from Whom | 0 | - | 4.99 | 197,921 |
| Subdivisions by Country | 0 | - | 4.86 | 48,248 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 122,230 |
| Megadiverse Countries | 0 | - | 4.96 | 129,996 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 120,598 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 110,271 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 49,147 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 154,266 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 58,936 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 85,199 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 148,453 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 79,687 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,146 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 65,438 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 104,242 |
| Countries Furthest from the United States | 0 | - | 4.95 | 85,431 |
| Countries with the Highest HDI | 0 | - | 4.95 | 133,796 |
| Straight Shot to the Arctic Circle | 0 | - | 4.89 | 71,686 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 68,060 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,234,054 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 96,223 |
| World Map Quiz | 0 | - | 4.88 | 56,600 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 132,060 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 85,979 |
| Southernmost Countries of the World | 0 | - | 4.99 | 217,112 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 97,841 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 115,327 |
| Countries With the Most Languages | 0 | - | 4.88 | 187,441 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 92,026 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 87,836 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 92,738 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 57,862 |
| Tallest Countries North to South | 0 | - | 4.85 | 114,993 |
| Widest Countries East to West | 0 | - | 4.92 | 123,895 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 70,020 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 164,481 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 95,155 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 89,752 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 124,382 |
| Countries with the Most Desert | 0 | - | 4.93 | 122,701 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 67,846 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 33,379 |
| Countries with Double Letters | 0 | - | 4.96 | 80,527 |
| Countries that End in N | 0 | - | 4.93 | 144,627 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 243,662 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 198,863 |
| Countries with W | 0 | - | 4.97 | 132,203 |
| Countries with Z | 0 | - | 4.98 | 274,088 |
| Countries with Letters Missing | 0 | - | 4.97 | 175,444 |
| Countries That End in U | 0 | - | 4.95 | 113,483 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 99,034 |
| Countries that End in O | 0 | - | 4.92 | 153,117 |
| Countries that End in R | 0 | - | 4.84 | 99,524 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 151,507 |
| Countries Ending in "IA" | 0 | - | 4.99 | 196,698 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 162,520 |
| Countries by Last Two Letters | 0 | - | 4.89 | 121,250 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 134,936 |
| Countries That End in Y | 0 | - | 4.91 | 181,294 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 188,047 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 126,739 |
| Countries that End in I | 0 | - | 4.92 | 117,088 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 157,446 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 91,790 |
| Countries That End in NIA | 0 | - | 4.92 | 104,649 |
| Countries That End in BIA | 0 | - | 4.91 | 141,737 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 160,522 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 114,133 |
| Countries That End in RIA | 0 | - | 4.89 | 104,983 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 105,228 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 213,440 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 126,281 |
| Divided Country Name Puzzle #3 | 0 | - | 4.91 | 118,027 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 84,018 |
| Countries With One Word and Three A's | 0 | - | 4.94 | 48,020 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 97,095 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 119,258 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 45,850 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 46,904 |
| Countries that End in L | 0 | - | 4.94 | 151,167 |
| "Land" Countries | 0 | - | 4.98 | 298,670 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 196,013 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 83,775 |
| City to Country Quiz #1 | 0 | - | 4.95 | 138,509 |
| City to Country Quiz #3 | 0 | - | 4.87 | 103,203 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 74,950 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 218,000 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 191,490 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 121,580 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 139,625 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 214,858 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 146,292 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 68,458 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 105,463 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 84,626 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 59,371 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,372,350 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 362,572 |
| One Border Countries | 0 | - | 4.98 | 441,864 |
| Top-Producing Countries | 0 | - | 4.69 | 102,364 |
| Country Codes Quiz | 0 | - | 4.45 | 80,353 |
| Countries on the Equator | 0 | - | 4.74 | 137,093 |
| Members of the Arab League | 0 | - | 4.78 | 74,504 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 67,822 |
| Separatist Movements | 0 | - | 4.46 | 44,243 |
| Prime Meridian Countries | 0 | - | 4.69 | 58,564 |
| Next Country Alphabetically | 0 | - | 4.73 | 83,181 |
| Westernmost Countries | 0 | - | 4.49 | 48,624 |
| Easternmost Countries | 0 | - | 4.71 | 61,607 |
| Countries With the Most ISIS Fighters | 0 | - | 4.53 | 38,447 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 103,385 |
| Indochina Countries | 0 | - | 4.70 | 64,469 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 63,934 |
| Countries With the Most Conflict Deaths | 0 | - | 4.64 | 93,884 |
| Highest Foreign Aid Recipients | 0 | - | 4.64 | 43,275 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,182 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 47,145 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 51,235 |
| Countries that are the Source of Refugees | 0 | - | 4.64 | 58,735 |
| Countries 206 to 242 | 0 | - | 4.71 | 32,384 |
| Most Populous Countries By Category | 0 | - | 4.55 | 63,616 |
| Countries with the Most Turkic People | 0 | - | 4.79 | 43,874 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.78 | 59,434 |
| Flyover Countries | 0 | - | 4.64 | 49,082 |
| Top 50 Countries by Area - In Order | 0 | - | 4.75 | 70,250 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 38,773 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 44,989 |
