| Landlocked Countries | 0 | - | 4.99 | 415,756 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,092,279 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,482 |
| Himalayan Countries | 0 | - | 4.95 | 136,125 |
| Andean Countries | 0 | - | 4.95 | 83,242 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,559 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,741 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,249 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,887 |
| Danube Countries | 0 | - | 4.97 | 71,305 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,065 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,755 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,958 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,904 |
| European Landlocked Countries | 0 | - | 4.99 | 146,013 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,605 |
| Countries with the Most Species | 0 | - | 4.99 | 95,374 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,732 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,283 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,453 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,094 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,743 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,115 |
| Countries in the Alps | 0 | - | 4.86 | 117,187 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,811 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,687 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,183 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,629 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,436 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,178 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,864 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,926 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,728 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,260 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,296 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,164 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,650 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,917 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,924 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,552 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,825 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,367 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,101 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,491 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,329 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,760 |
| Largest Countries By Category | 0 | - | 4.97 | 157,112 |
| Countries by Countries | 0 | - | 4.96 | 62,490 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,749 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,045 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,391 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,005 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,734,134 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,169 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,219 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,020 |
| Island Countries | 0 | - | 4.99 | 708,499 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,282 |
| Northernmost Countries | 0 | - | 4.99 | 358,929 |
| Countries of South America | 0 | - | 5.00 | 918,461 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,109 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,855,762 |
| "Land" Countries | 0 | - | 4.98 | 334,210 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,027 |
| Countries with Megacities | 0 | - | 4.99 | 248,461 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,915 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,421 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,304 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,361 |
| Countries by Official Language | 0 | - | 4.95 | 193,516 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,040 |
| Countries in their Native Language | 0 | - | 4.99 | 197,260 |
| Independence from Whom | 0 | - | 4.99 | 210,292 |
| Subdivisions by Country | 0 | - | 4.86 | 50,163 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,158 |
| Megadiverse Countries | 0 | - | 4.96 | 134,489 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,431 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,040 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,575 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,926 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,935 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,156 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,423 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,479 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,321 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,794 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,022 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,541 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,645 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,612 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,816 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,144 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,368,177 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,257 |
| World Map Quiz | 0 | - | 4.81 | 63,895 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,919 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,632 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,881 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,580 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,296 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,461 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,167 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,365 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,550 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,102 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,572 |
| Widest Countries East to West | 0 | - | 4.92 | 129,070 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,302 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,550 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,668 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,897 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,889 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,274 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,905 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,652 |
| Countries with Double Letters | 0 | - | 4.96 | 93,769 |
| Countries that End in N | 0 | - | 4.94 | 157,209 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,145 |
| Countries with Six Letters | 0 | - | 4.93 | 210,795 |
| Countries with W | 0 | - | 4.97 | 158,473 |
| Countries with Z | 0 | - | 4.98 | 288,350 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,829 |
| Countries That End in U | 0 | - | 4.95 | 119,649 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,958 |
| Countries that End in O | 0 | - | 4.92 | 158,682 |
| Countries that End in R | 0 | - | 4.87 | 118,400 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,951 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,505 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,603 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,698 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,258 |
| Countries That End in Y | 0 | - | 4.90 | 185,310 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,687 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,969 |
| Countries that End in I | 0 | - | 4.94 | 134,578 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,555 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,338 |
| Countries That End in NIA | 0 | - | 4.92 | 109,177 |
| Countries That End in BIA | 0 | - | 4.92 | 148,161 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,317 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,683 |
| Countries That End in RIA | 0 | - | 4.93 | 126,232 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,220 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,859 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,738 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,092 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,647 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,059 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,329 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,846 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,740 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,923 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,399 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,062 |
| Countries that End in L | 0 | - | 4.94 | 156,189 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,400 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,030 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,659 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,497 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,558 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,115 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,705 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,025 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,723 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,130 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,972 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,845 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,259 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,480 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,456 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,605 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,529 |
| One Border Countries | 0 | - | 4.98 | 465,958 |
| Top Producing Countries | 0 | - | 4.63 | 115,994 |
| ISO Country Codes | 0 | - | 4.45 | 82,236 |
| Countries on the Equator | 0 | - | 4.63 | 140,434 |
| Members of the Arab League | 0 | - | 4.77 | 75,512 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,649 |
| Separatist Movements | 0 | - | 4.44 | 45,720 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,768 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,685 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,033 |
| Westernmost Countries | 0 | - | 4.50 | 49,458 |
| Easternmost Countries | 0 | - | 4.75 | 62,723 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,527 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,084 |
| Indochina Countries | 0 | - | 4.74 | 66,005 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,551 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,855 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,905 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,999 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,252 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,498 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,668 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,780 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,103 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,482 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,343 |
| Flyover Countries | 0 | - | 4.68 | 50,634 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,538 |
