| Landlocked Countries | 0 | - | 4.99 | 423,845 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,734,677 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,361 |
| Himalayan Countries | 0 | - | 4.94 | 139,534 |
| Andean Countries | 0 | - | 4.94 | 85,065 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,247 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,460 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,807 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,119 |
| Danube Countries | 0 | - | 4.97 | 72,212 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,309 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,626 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,714 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,219 |
| European Landlocked Countries | 0 | - | 4.99 | 147,380 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,984 |
| Countries with the Most Species | 0 | - | 4.99 | 103,424 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,114 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,681 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,793 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,700 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,440 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,853 |
| Countries in the Alps | 0 | - | 4.87 | 118,496 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,084 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,460 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,814 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,815 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,750 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,098 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,923 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,674 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,299 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,018 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,762 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,632 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,390 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,639 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,722 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,382 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,476 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,244 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,365 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,928 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,664 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,381 |
| Largest Countries By Category | 0 | - | 4.97 | 158,550 |
| Countries by Countries | 0 | - | 4.96 | 63,443 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,014 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,350 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,624 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,908 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,792,283 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,270 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,111 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,580 |
| Island Countries | 0 | - | 4.99 | 711,774 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,484 |
| Northernmost Countries | 0 | - | 4.99 | 363,089 |
| Countries of South America | 0 | - | 5.00 | 930,000 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,301 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,453 |
| "Land" Countries | 0 | - | 4.98 | 337,892 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,450 |
| Countries with Megacities | 0 | - | 4.99 | 265,888 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,243 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,755 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,501 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,854 |
| Countries by Official Language | 0 | - | 4.95 | 195,649 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,117 |
| Countries in their Native Language | 0 | - | 4.99 | 199,424 |
| Independence from Whom | 0 | - | 4.99 | 212,573 |
| Subdivisions by Country | 0 | - | 4.87 | 50,536 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,075 |
| Megadiverse Countries | 0 | - | 4.96 | 135,157 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,448 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,464 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,344 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,164 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,375 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,700 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,743 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,471 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,748 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,207 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,097 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,270 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,332 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,062 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,478 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,603 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,388,569 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,842 |
| World Map Quiz | 0 | - | 4.81 | 65,381 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,282 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,532 |
| Countries by Founding Story | 0 | - | 4.95 | 77,537 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,667 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,687 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,341 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,970 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,203 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,324 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,537 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,587 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,091 |
| Widest Countries East to West | 0 | - | 4.92 | 130,203 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,531 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,027 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,439 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,932 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,810 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,085 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,447 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,854 |
| Countries with Double Letters | 0 | - | 4.96 | 96,690 |
| Countries that End in N | 0 | - | 4.95 | 171,571 |
| Countries with Five Letters | 0 | - | 4.96 | 283,220 |
| Countries with Six Letters | 0 | - | 4.94 | 214,030 |
| Countries with W | 0 | - | 4.96 | 160,644 |
| Countries with Z | 0 | - | 4.98 | 291,974 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,012 |
| Countries That End in U | 0 | - | 4.95 | 121,028 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,800 |
| Countries that End in O | 0 | - | 4.92 | 159,674 |
| Countries that End in R | 0 | - | 4.87 | 119,076 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,833 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,473 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,939 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,653 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,581 |
| Countries That End in Y | 0 | - | 4.91 | 186,001 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,194 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,080 |
| Countries that End in I | 0 | - | 4.94 | 135,218 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,382 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,936 |
| Countries That End in NIA | 0 | - | 4.92 | 109,927 |
| Countries That End in BIA | 0 | - | 4.93 | 149,406 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,339 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,629 |
| Countries That End in RIA | 0 | - | 4.93 | 126,943 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,219 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,114 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,961 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,398 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,941 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,693 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,191 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,493 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,727 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,547 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,524 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,209 |
| Countries that End in L | 0 | - | 4.94 | 156,996 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,741 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,308 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,155 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,086 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,133 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,124 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,923 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,301 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,058 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,734 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,056 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,175 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,760 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,124 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,292 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,724 |
| One Border Countries | 0 | - | 4.98 | 470,966 |
| Top Producing Countries | 0 | - | 4.63 | 116,347 |
| ISO Country Codes | 0 | - | 4.49 | 91,520 |
| Countries on the Equator | 0 | - | 4.63 | 141,117 |
| Members of the Arab League | 0 | - | 4.77 | 75,678 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,995 |
| Separatist Movements | 0 | - | 4.45 | 45,966 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,427 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,878 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,356 |
| Westernmost Countries | 0 | - | 4.43 | 62,511 |
| Easternmost Countries | 0 | - | 4.74 | 63,029 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,720 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,854 |
| Indochina Countries | 0 | - | 4.74 | 66,280 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,666 |
| Countries With the Most Conflict Deaths | 0 | - | 4.62 | 96,428 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 44,013 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,139 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,457 |
| Countries with More Sheep than People | 0 | - | 4.48 | 31,885 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,789 |
| Countries that are the Source of Refugees | 0 | - | 4.78 | 74,849 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,020 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,585 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,798 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,694 |
| Flyover Countries | 0 | - | 4.69 | 50,928 |
