| Landlocked Countries | 0 | - | 4.99 | 423,522 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,707,408 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,221 |
| Himalayan Countries | 0 | - | 4.94 | 139,409 |
| Andean Countries | 0 | - | 4.94 | 84,982 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,194 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,365 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,755 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,072 |
| Danube Countries | 0 | - | 4.97 | 72,179 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,264 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,588 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,642 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,149 |
| European Landlocked Countries | 0 | - | 4.99 | 147,334 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,917 |
| Countries with the Most Species | 0 | - | 4.99 | 103,392 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,062 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,668 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,778 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,659 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,417 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,822 |
| Countries in the Alps | 0 | - | 4.87 | 118,445 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,962 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,391 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,789 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,779 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,698 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,080 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,876 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,644 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,282 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,999 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,749 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,617 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,362 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,614 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,684 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,289 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,448 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,076 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,310 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,773 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,576 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,358 |
| Largest Countries By Category | 0 | - | 4.97 | 158,505 |
| Countries by Countries | 0 | - | 4.96 | 63,417 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,949 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,338 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,606 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,860 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,789,921 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,963 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,010 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,350 |
| Island Countries | 0 | - | 4.99 | 711,629 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,970 |
| Northernmost Countries | 0 | - | 4.99 | 362,847 |
| Countries of South America | 0 | - | 5.00 | 929,566 |
| Countries of Oceania | 0 | - | 5.00 | 1,059,665 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,882,323 |
| "Land" Countries | 0 | - | 4.98 | 337,785 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,368 |
| Countries with Megacities | 0 | - | 4.99 | 265,670 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,154 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,717 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,423 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,792 |
| Countries by Official Language | 0 | - | 4.95 | 195,571 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,839 |
| Countries in their Native Language | 0 | - | 4.99 | 199,351 |
| Independence from Whom | 0 | - | 4.99 | 212,482 |
| Subdivisions by Country | 0 | - | 4.87 | 50,515 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,018 |
| Megadiverse Countries | 0 | - | 4.96 | 135,135 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,370 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,441 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,326 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,155 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,331 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,679 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,685 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,453 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,732 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,199 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,026 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,991 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,304 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,041 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,464 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,584 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,387,713 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,715 |
| World Map Quiz | 0 | - | 4.81 | 65,319 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,094 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,509 |
| Countries by Founding Story | 0 | - | 4.95 | 77,506 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,521 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,560 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,240 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,833 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,130 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,253 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,480 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,546 |
| Tallest Countries North to South | 0 | - | 4.83 | 126,006 |
| Widest Countries East to West | 0 | - | 4.92 | 130,009 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,504 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,977 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,423 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,890 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,775 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,038 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,438 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,835 |
| Countries with Double Letters | 0 | - | 4.96 | 96,599 |
| Countries that End in N | 0 | - | 4.95 | 171,489 |
| Countries with Five Letters | 0 | - | 4.96 | 283,087 |
| Countries with Six Letters | 0 | - | 4.94 | 213,949 |
| Countries with W | 0 | - | 4.96 | 160,579 |
| Countries with Z | 0 | - | 4.98 | 291,863 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,956 |
| Countries That End in U | 0 | - | 4.95 | 120,991 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,740 |
| Countries that End in O | 0 | - | 4.92 | 159,645 |
| Countries that End in R | 0 | - | 4.87 | 119,055 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,814 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,413 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,892 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,628 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,544 |
| Countries That End in Y | 0 | - | 4.91 | 185,976 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,144 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,041 |
| Countries that End in I | 0 | - | 4.94 | 135,198 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,333 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,915 |
| Countries That End in NIA | 0 | - | 4.92 | 109,886 |
| Countries That End in BIA | 0 | - | 4.93 | 149,368 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,292 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,580 |
| Countries That End in RIA | 0 | - | 4.93 | 126,924 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,175 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,004 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,918 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,356 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,897 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,665 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,164 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,481 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,677 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,532 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,475 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,172 |
| Countries that End in L | 0 | - | 4.94 | 156,967 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,534 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,301 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,132 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,062 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,109 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,044 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,881 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,279 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,026 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,682 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,027 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,167 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,751 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,091 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,450,761 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,595 |
| One Border Countries | 0 | - | 4.98 | 470,778 |
| Top Producing Countries | 0 | - | 4.63 | 116,332 |
| ISO Country Codes | 0 | - | 4.49 | 91,495 |
| Countries on the Equator | 0 | - | 4.63 | 141,090 |
| Members of the Arab League | 0 | - | 4.77 | 75,671 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,986 |
| Separatist Movements | 0 | - | 4.45 | 45,958 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,402 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,871 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,346 |
| Westernmost Countries | 0 | - | 4.43 | 62,496 |
| Easternmost Countries | 0 | - | 4.74 | 63,023 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,717 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,820 |
| Indochina Countries | 0 | - | 4.74 | 66,272 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,665 |
| Countries With the Most Conflict Deaths | 0 | - | 4.62 | 96,422 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 44,006 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,135 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,448 |
| Countries with More Sheep than People | 0 | - | 4.48 | 31,799 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,776 |
| Countries that are the Source of Refugees | 0 | - | 4.78 | 74,603 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,012 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,561 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,782 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,684 |
| Flyover Countries | 0 | - | 4.69 | 50,916 |
