| Landlocked Countries | 0 | - | 4.99 | 422,104 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,592,830 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,527 |
| Himalayan Countries | 0 | - | 4.94 | 138,798 |
| Andean Countries | 0 | - | 4.93 | 84,648 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,838 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,884 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,465 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,830 |
| Danube Countries | 0 | - | 4.97 | 72,027 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,036 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,438 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,341 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,818 |
| European Landlocked Countries | 0 | - | 4.99 | 147,156 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,671 |
| Countries with the Most Species | 0 | - | 4.99 | 103,251 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,787 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,600 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,729 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,551 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,242 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,673 |
| Countries in the Alps | 0 | - | 4.87 | 118,227 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,187 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,057 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,664 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,603 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,528 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,957 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,691 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,505 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,188 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,863 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,663 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,533 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,240 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,484 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,541 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,936 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,322 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 63,949 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,102 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,001 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,162 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,245 |
| Largest Countries By Category | 0 | - | 4.97 | 158,235 |
| Countries by Countries | 0 | - | 4.96 | 63,243 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,703 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,296 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,571 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,684 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,779,720 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,662 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,543 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,377 |
| Island Countries | 0 | - | 4.99 | 711,091 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,039 |
| Northernmost Countries | 0 | - | 4.99 | 362,016 |
| Countries of South America | 0 | - | 5.00 | 927,547 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,193 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,752 |
| "Land" Countries | 0 | - | 4.98 | 337,372 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,926 |
| Countries with Megacities | 0 | - | 4.99 | 264,622 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,762 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,488 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,023 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,565 |
| Countries by Official Language | 0 | - | 4.95 | 195,280 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,405 |
| Countries in their Native Language | 0 | - | 4.99 | 199,065 |
| Independence from Whom | 0 | - | 4.99 | 212,138 |
| Subdivisions by Country | 0 | - | 4.86 | 50,435 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,753 |
| Megadiverse Countries | 0 | - | 4.96 | 135,021 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,118 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,367 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,242 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,111 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,155 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,602 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,489 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,039 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,665 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,150 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,688 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,890 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,212 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,969 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,358 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,502 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,980 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,218 |
| World Map Quiz | 0 | - | 4.81 | 65,109 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,347 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,363 |
| Countries by Founding Story | 0 | - | 4.95 | 77,383 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,114 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,289 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,006 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,230 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,906 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,022 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,310 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,446 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,583 |
| Widest Countries East to West | 0 | - | 4.92 | 129,658 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,460 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,392 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,124 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,773 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,606 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,882 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,376 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,800 |
| Countries with Double Letters | 0 | - | 4.96 | 96,250 |
| Countries that End in N | 0 | - | 4.95 | 171,141 |
| Countries with Five Letters | 0 | - | 4.96 | 282,500 |
| Countries with Six Letters | 0 | - | 4.94 | 213,566 |
| Countries with W | 0 | - | 4.97 | 160,331 |
| Countries with Z | 0 | - | 4.98 | 291,470 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,709 |
| Countries That End in U | 0 | - | 4.95 | 120,859 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,469 |
| Countries that End in O | 0 | - | 4.92 | 159,512 |
| Countries that End in R | 0 | - | 4.87 | 118,972 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,733 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,106 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,702 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,478 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,402 |
| Countries That End in Y | 0 | - | 4.91 | 185,873 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,925 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,860 |
| Countries that End in I | 0 | - | 4.94 | 135,093 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,113 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,823 |
| Countries That End in NIA | 0 | - | 4.92 | 109,788 |
| Countries That End in BIA | 0 | - | 4.93 | 149,205 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,126 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,429 |
| Countries That End in RIA | 0 | - | 4.93 | 126,806 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,022 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,625 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,709 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,126 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,681 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,579 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,031 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,445 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,527 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,422 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,289 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,985 |
| Countries that End in L | 0 | - | 4.94 | 156,841 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,800 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,265 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,028 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,956 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,001 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,756 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,656 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,993 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,543 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,444 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,865 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,101 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,707 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,873 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,383 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,010 |
| One Border Countries | 0 | - | 4.98 | 469,932 |
| Top Producing Countries | 0 | - | 4.63 | 116,264 |
| ISO Country Codes | 0 | - | 4.48 | 91,307 |
| Countries on the Equator | 0 | - | 4.63 | 140,842 |
| Members of the Arab League | 0 | - | 4.77 | 75,643 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,921 |
| Separatist Movements | 0 | - | 4.45 | 45,911 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,291 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,834 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,290 |
| Westernmost Countries | 0 | - | 4.43 | 62,425 |
| Easternmost Countries | 0 | - | 4.75 | 62,981 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,671 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,694 |
| Indochina Countries | 0 | - | 4.74 | 66,211 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,644 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,374 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,986 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,107 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,415 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,715 |
| Countries that are the Source of Refugees | 0 | - | 4.72 | 69,807 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,963 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,478 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,732 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,618 |
| Flyover Countries | 0 | - | 4.69 | 50,836 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 74,010 |
