| Landlocked Countries | 0 | - | 4.99 | 413,724 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,929,064 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,635 |
| Himalayan Countries | 0 | - | 4.95 | 135,405 |
| Andean Countries | 0 | - | 4.94 | 82,838 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,233 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,231 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,922 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,622 |
| Danube Countries | 0 | - | 4.97 | 71,091 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,775 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,547 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,508 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,420 |
| European Landlocked Countries | 0 | - | 4.99 | 145,763 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,227 |
| Countries with the Most Species | 0 | - | 4.99 | 95,247 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,365 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,201 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,372 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,963 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,581 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,954 |
| Countries in the Alps | 0 | - | 4.86 | 116,838 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,581 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,275 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,019 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,430 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,183 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,011 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,590 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,768 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,338 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,071 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,198 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,048 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,459 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,757 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,762 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,094 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,654 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,257 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,779 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,351 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,703 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,608 |
| Largest Countries By Category | 0 | - | 4.97 | 156,778 |
| Countries by Countries | 0 | - | 4.96 | 62,268 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,402 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,963 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,334 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,778 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,717,891 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,163 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,148 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,900 |
| Island Countries | 0 | - | 4.99 | 707,673 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,598 |
| Northernmost Countries | 0 | - | 4.99 | 357,782 |
| Countries of South America | 0 | - | 5.00 | 914,939 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,710 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,848,740 |
| "Land" Countries | 0 | - | 4.98 | 333,680 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,319 |
| Countries with Megacities | 0 | - | 4.99 | 247,057 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,190 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,021 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,611 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,927 |
| Countries by Official Language | 0 | - | 4.95 | 192,798 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,159 |
| Countries in their Native Language | 0 | - | 4.99 | 196,660 |
| Independence from Whom | 0 | - | 4.99 | 209,720 |
| Subdivisions by Country | 0 | - | 4.86 | 50,071 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,778 |
| Megadiverse Countries | 0 | - | 4.97 | 133,909 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,817 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,921 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,431 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,864 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,680 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,010 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,039 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,159 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,218 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,750 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,594 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,430 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,502 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,508 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,689 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,032 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,601 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,616 |
| World Map Quiz | 0 | - | 4.81 | 63,508 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,727 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,340 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,372 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,002 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,963 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,797 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,866 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,071 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,282 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,953 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,340 |
| Widest Countries East to West | 0 | - | 4.92 | 128,612 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,219 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,227 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,572 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,698 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,642 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,055 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,052 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,586 |
| Countries with Double Letters | 0 | - | 4.97 | 93,408 |
| Countries that End in N | 0 | - | 4.94 | 156,896 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,708 |
| Countries with Six Letters | 0 | - | 4.93 | 210,386 |
| Countries with W | 0 | - | 4.97 | 158,240 |
| Countries with Z | 0 | - | 4.98 | 287,900 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,566 |
| Countries That End in U | 0 | - | 4.95 | 119,524 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,581 |
| Countries that End in O | 0 | - | 4.92 | 158,567 |
| Countries that End in R | 0 | - | 4.87 | 118,279 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,861 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,064 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,352 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,505 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,035 |
| Countries That End in Y | 0 | - | 4.90 | 185,213 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,392 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,697 |
| Countries that End in I | 0 | - | 4.94 | 134,423 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,211 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,200 |
| Countries That End in NIA | 0 | - | 4.92 | 109,013 |
| Countries That End in BIA | 0 | - | 4.92 | 147,722 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,078 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,493 |
| Countries That End in RIA | 0 | - | 4.93 | 126,091 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,020 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,213 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,536 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,892 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,367 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,935 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,133 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,657 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,518 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,817 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,160 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,827 |
| Countries that End in L | 0 | - | 4.94 | 155,743 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,257 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,989 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,518 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,309 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,438 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,050 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,117 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,923 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,207 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,402 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,534 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,624 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,173 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,423 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,336 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,290 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,702 |
| One Border Countries | 0 | - | 4.98 | 464,458 |
| Top Producing Countries | 0 | - | 4.63 | 115,916 |
| ISO Country Codes | 0 | - | 4.45 | 82,122 |
| Countries on the Equator | 0 | - | 4.61 | 140,312 |
| Members of the Arab League | 0 | - | 4.77 | 75,471 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,574 |
| Separatist Movements | 0 | - | 4.44 | 45,635 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,599 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,637 |
| Next Country Alphabetically | 0 | - | 4.70 | 85,558 |
| Westernmost Countries | 0 | - | 4.50 | 49,426 |
| Easternmost Countries | 0 | - | 4.75 | 62,682 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,469 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 107,877 |
| Indochina Countries | 0 | - | 4.74 | 65,928 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,524 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,776 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,881 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,960 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,188 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,414 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,586 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,722 |
| Most Populous Countries By Category | 0 | - | 4.55 | 84,986 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,400 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,255 |
| Flyover Countries | 0 | - | 4.64 | 50,565 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,413 |
