| Landlocked Countries | 0 | - | 4.99 | 416,280 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,134,183 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,765 |
| Himalayan Countries | 0 | - | 4.95 | 136,354 |
| Andean Countries | 0 | - | 4.95 | 83,401 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,662 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,893 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,358 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,963 |
| Danube Countries | 0 | - | 4.97 | 71,359 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,155 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,817 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,083 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,029 |
| European Landlocked Countries | 0 | - | 4.99 | 146,089 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,699 |
| Countries with the Most Species | 0 | - | 4.99 | 100,157 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,844 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,313 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,488 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,130 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,785 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,156 |
| Countries in the Alps | 0 | - | 4.86 | 117,287 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,868 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,807 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,230 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,702 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,767 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,221 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,945 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,970 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,771 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,302 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,339 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,188 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,694 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,960 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,972 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,638 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,868 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,403 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,156 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,782 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,475 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,790 |
| Largest Countries By Category | 0 | - | 4.97 | 157,207 |
| Countries by Countries | 0 | - | 4.96 | 62,559 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,825 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,068 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,404 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,050 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,737,987 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,539 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,662 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,502 |
| Island Countries | 0 | - | 4.99 | 708,690 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,888 |
| Northernmost Countries | 0 | - | 4.99 | 359,183 |
| Countries of South America | 0 | - | 5.00 | 919,170 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,027 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,463 |
| "Land" Countries | 0 | - | 4.98 | 334,359 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,170 |
| Countries with Megacities | 0 | - | 4.99 | 248,727 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,034 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,488 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,404 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,439 |
| Countries by Official Language | 0 | - | 4.95 | 193,885 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,380 |
| Countries in their Native Language | 0 | - | 4.99 | 197,534 |
| Independence from Whom | 0 | - | 4.99 | 210,484 |
| Subdivisions by Country | 0 | - | 4.86 | 50,181 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,256 |
| Megadiverse Countries | 0 | - | 4.96 | 134,513 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,730 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,064 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,613 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,939 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,407 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,190 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,512 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,518 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,352 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,800 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,111 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,564 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,664 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,629 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,834 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,183 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,542 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,417 |
| World Map Quiz | 0 | - | 4.81 | 63,994 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,166 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,662 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,993 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,626 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,355 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,606 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,225 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,419 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,594 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,128 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,614 |
| Widest Countries East to West | 0 | - | 4.92 | 129,111 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,319 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,601 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,897 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,931 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,944 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,324 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,025 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,662 |
| Countries with Double Letters | 0 | - | 4.96 | 93,889 |
| Countries that End in N | 0 | - | 4.94 | 159,297 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,296 |
| Countries with Six Letters | 0 | - | 4.93 | 210,906 |
| Countries with W | 0 | - | 4.97 | 158,579 |
| Countries with Z | 0 | - | 4.98 | 288,498 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,897 |
| Countries That End in U | 0 | - | 4.95 | 119,720 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,053 |
| Countries that End in O | 0 | - | 4.92 | 158,736 |
| Countries that End in R | 0 | - | 4.87 | 118,435 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,983 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,619 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,669 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,755 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,319 |
| Countries That End in Y | 0 | - | 4.90 | 185,341 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,762 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,019 |
| Countries that End in I | 0 | - | 4.94 | 134,615 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,626 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,377 |
| Countries That End in NIA | 0 | - | 4.92 | 109,251 |
| Countries That End in BIA | 0 | - | 4.93 | 148,487 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,368 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,725 |
| Countries That End in RIA | 0 | - | 4.93 | 126,291 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,277 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,979 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,800 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,156 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,716 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,101 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,377 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,898 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,787 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,959 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,466 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,125 |
| Countries that End in L | 0 | - | 4.94 | 156,225 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,696 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,043 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,696 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,535 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,596 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,238 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,761 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,227 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,781 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,196 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,012 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,858 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,280 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,501 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,486 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,378 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,704 |
| One Border Countries | 0 | - | 4.98 | 466,224 |
| Top Producing Countries | 0 | - | 4.63 | 116,023 |
| ISO Country Codes | 0 | - | 4.45 | 82,255 |
| Countries on the Equator | 0 | - | 4.63 | 140,467 |
| Members of the Arab League | 0 | - | 4.77 | 75,518 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,669 |
| Separatist Movements | 0 | - | 4.44 | 45,729 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,797 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,690 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,052 |
| Westernmost Countries | 0 | - | 4.50 | 49,463 |
| Easternmost Countries | 0 | - | 4.75 | 62,733 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,535 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,132 |
| Indochina Countries | 0 | - | 4.74 | 66,023 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,555 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,924 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,912 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,008 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,266 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,516 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,681 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,800 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,129 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,497 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,359 |
| Flyover Countries | 0 | - | 4.68 | 50,645 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,570 |
