| Countries of the World Quiz | 0 | - | 5.00 | 46,960,550 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,781 |
| Himalayan Countries | 0 | - | 4.95 | 135,525 |
| Andean Countries | 0 | - | 4.94 | 82,918 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,291 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,317 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,989 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,664 |
| Danube Countries | 0 | - | 4.97 | 71,123 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,826 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,587 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,588 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,493 |
| European Landlocked Countries | 0 | - | 4.99 | 145,817 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,281 |
| Countries with the Most Species | 0 | - | 4.99 | 95,275 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,431 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,216 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,384 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,984 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,611 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,993 |
| Countries in the Alps | 0 | - | 4.86 | 116,910 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,625 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,349 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,052 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,466 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,236 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,045 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,634 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,804 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,479 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,108 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,209 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,073 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,485 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,798 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,787 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,170 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,696 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,284 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,840 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,561 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,834 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,630 |
| Largest Countries By Category | 0 | - | 4.97 | 156,848 |
| Countries by Countries | 0 | - | 4.96 | 62,311 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,483 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,980 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,347 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,821 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,721,077 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,650 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,303 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,121 |
| Island Countries | 0 | - | 4.99 | 707,807 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,143 |
| Northernmost Countries | 0 | - | 4.99 | 357,994 |
| Countries of South America | 0 | - | 5.00 | 915,672 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,696 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,850,193 |
| "Land" Countries | 0 | - | 4.98 | 333,776 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,546 |
| Countries with Megacities | 0 | - | 4.99 | 247,416 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,375 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,155 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,807 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,068 |
| Countries by Official Language | 0 | - | 4.95 | 192,879 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,279 |
| Countries in their Native Language | 0 | - | 4.99 | 196,731 |
| Independence from Whom | 0 | - | 4.99 | 209,826 |
| Subdivisions by Country | 0 | - | 4.86 | 50,090 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,853 |
| Megadiverse Countries | 0 | - | 4.97 | 133,947 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,908 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,943 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,454 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,871 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,729 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,036 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,132 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,194 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,238 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,755 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,691 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,448 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,531 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,527 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,714 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,049 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,363,725 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,713 |
| World Map Quiz | 0 | - | 4.81 | 63,600 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,969 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,390 |
| Countries by Founding Story | 0 | - | 4.95 | 76,592 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,465 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,191 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,998 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,909 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,916 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,107 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,321 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,974 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,371 |
| Widest Countries East to West | 0 | - | 4.92 | 128,650 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,221 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,291 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,593 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,725 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,678 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,102 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,062 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,598 |
| Countries with Double Letters | 0 | - | 4.96 | 93,469 |
| Countries that End in N | 0 | - | 4.94 | 156,968 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,777 |
| Countries with Six Letters | 0 | - | 4.93 | 210,444 |
| Countries with W | 0 | - | 4.97 | 158,286 |
| Countries with Z | 0 | - | 4.98 | 287,985 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,613 |
| Countries That End in U | 0 | - | 4.95 | 119,544 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,672 |
| Countries that End in O | 0 | - | 4.92 | 158,589 |
| Countries that End in R | 0 | - | 4.87 | 118,301 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,878 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,183 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,406 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,543 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,082 |
| Countries That End in Y | 0 | - | 4.90 | 185,229 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,455 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,759 |
| Countries that End in I | 0 | - | 4.94 | 134,461 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,287 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,235 |
| Countries That End in NIA | 0 | - | 4.92 | 109,046 |
| Countries That End in BIA | 0 | - | 4.92 | 147,755 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,134 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,536 |
| Countries That End in RIA | 0 | - | 4.93 | 126,120 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,060 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,286 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,555 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,936 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,420 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,955 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,168 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,697 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,556 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,837 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,206 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,870 |
| Countries that End in L | 0 | - | 4.94 | 155,786 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,523 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,998 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,546 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,345 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,463 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,438 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,300 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 135,088 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,371 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,658 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,690 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,703 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,185 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,436 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,353 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,958 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,870 |
| One Border Countries | 0 | - | 4.98 | 464,777 |
| Top Producing Countries | 0 | - | 4.63 | 115,937 |
| ISO Country Codes | 0 | - | 4.45 | 82,146 |
| Countries on the Equator | 0 | - | 4.63 | 140,340 |
| Members of the Arab League | 0 | - | 4.77 | 75,480 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,589 |
| Separatist Movements | 0 | - | 4.44 | 45,652 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,634 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,643 |
| Next Country Alphabetically | 0 | - | 4.70 | 85,577 |
| Westernmost Countries | 0 | - | 4.50 | 49,432 |
| Easternmost Countries | 0 | - | 4.75 | 62,688 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,479 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 107,918 |
| Indochina Countries | 0 | - | 4.74 | 65,948 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,531 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,786 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,883 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,962 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,202 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,430 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,607 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,732 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,012 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,418 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,279 |
| Flyover Countries | 0 | - | 4.67 | 50,576 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,438 |
