| Landlocked Countries Quiz | 0 | - | 4.99 | 374,302 |
| Countries of the World Quiz | 0 | - | 5.00 | 43,678,654 |
| Sahara Desert Countries | 0 | - | 4.98 | 141,672 |
| Himalayan Countries | 0 | - | 4.95 | 118,750 |
| Andean Countries | 0 | - | 4.92 | 66,524 |
| Countries with the Oldest Median Age | 0 | - | 4.83 | 67,617 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 55,153 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 110,470 |
| Coffee Producing Countries | 0 | - | 4.81 | 58,210 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 57,903 |
| Danube Countries | 0 | - | 4.97 | 59,890 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 95,594 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 80,943 |
| Countries with the Best Passports | 0 | - | 4.81 | 78,393 |
| Countries with the Worst Passports | 0 | - | 4.91 | 60,852 |
| Countries with the Most Immigrants | 0 | - | 4.89 | 134,546 |
| European Landlocked Countries | 0 | - | 4.99 | 139,831 |
| Partially Recognized Countries | 0 | - | 4.98 | 96,415 |
| Countries with the Most Species | 0 | - | 4.99 | 91,729 |
| Countries 197 to 205 | 0 | - | 4.87 | 61,890 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 46,310 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 45,430 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 51,785 |
| Countries that Use the Peso | 0 | - | 4.83 | 48,922 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 69,349 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 52,794 |
| Countries in the Alps | 0 | - | 4.86 | 108,703 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 89,746 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 95,926 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 74,669 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 82,590 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 109,541 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 91,136 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 94,025 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 49,080 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 47,398 |
| Countries with the Most Container Port Traffic | 0 | - | 4.91 | 58,002 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 72,152 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 50,736 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.89 | 38,608 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 99,384 |
| Arctic Ocean Countries | 0 | - | 4.94 | 75,097 |
| Countries with the Most Grassland | 0 | - | 4.93 | 72,743 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 107,100 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 64,164 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 56,109 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 218,145 |
| World Countries - Blind Typing | 0 | - | 5.00 | 82,772 |
| Countries in Their Own Alphabet | 0 | - | 4.96 | 44,456 |
| Largest Countries By Category | 0 | - | 4.97 | 150,062 |
| Countries by Countries | 0 | - | 4.96 | 57,771 |
| Country Flags with the Most White | 0 | - | 4.87 | 130,262 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,346 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.86 | 46,033 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 82,897 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,337,903 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,411,881 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 356,938 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 377,891 |
| Island Countries Quiz | 0 | - | 4.99 | 685,791 |
| Biggest Countries by Area | 0 | - | 5.00 | 980,011 |
| Northernmost Countries | 0 | - | 4.99 | 340,021 |
| Countries of South America | 0 | - | 5.00 | 849,538 |
| Countries of Oceania | 0 | - | 5.00 | 960,359 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,700,059 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 155,468 |
| Countries with Megacities | 0 | - | 4.99 | 214,473 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 184,283 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 104,924 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 105,465 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 71,652 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 266,280 |
| Countries by Official Language | 0 | - | 4.95 | 182,177 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.90 | 279,385 |
| Countries in their Native Language | 0 | - | 4.98 | 187,102 |
| Independence from Whom | 0 | - | 4.99 | 197,526 |
| Subdivisions by Country | 0 | - | 4.86 | 48,176 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 121,949 |
| Megadiverse Countries | 0 | - | 4.96 | 129,867 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 119,833 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 110,180 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 49,092 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 154,037 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 58,844 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 84,955 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 148,351 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 79,598 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,110 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 64,801 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 104,160 |
| Countries Furthest from the United States | 0 | - | 4.95 | 85,326 |
| Countries with the Highest HDI | 0 | - | 4.95 | 133,691 |
| Straight Shot to the Arctic Circle | 0 | - | 4.90 | 71,576 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 67,965 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,227,660 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 95,708 |
| World Map Quiz | 0 | - | 4.88 | 56,313 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 131,320 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 85,823 |
| Southernmost Countries of the World | 0 | - | 4.99 | 216,641 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 97,484 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 114,980 |
| Countries With the Most Languages | 0 | - | 4.88 | 186,871 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 91,804 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 87,532 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 92,223 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 57,681 |
| Tallest Countries North to South | 0 | - | 4.85 | 114,813 |
| Widest Countries East to West | 0 | - | 4.92 | 123,720 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,941 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 164,299 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 95,053 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 89,562 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 124,105 |
| Countries with the Most Desert | 0 | - | 4.93 | 122,548 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 67,773 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 33,317 |
| Countries with Double Letters | 0 | - | 4.96 | 79,988 |
| Countries that End in N | 0 | - | 4.93 | 144,223 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 243,062 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 198,428 |
| Countries with W | 0 | - | 4.97 | 131,885 |
| Countries with Z | 0 | - | 4.98 | 273,562 |
| Countries with Letters Missing | 0 | - | 4.97 | 175,181 |
| Countries That End in U | 0 | - | 4.95 | 113,242 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 98,678 |
| Countries that End in O | 0 | - | 4.92 | 152,934 |
| Countries that End in R | 0 | - | 4.84 | 99,394 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 151,392 |
| Countries Ending in "IA" | 0 | - | 4.99 | 196,283 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 162,261 |
| Countries by Last Two Letters | 0 | - | 4.89 | 121,046 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 134,558 |
| Countries That End in Y | 0 | - | 4.91 | 181,178 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 187,738 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 126,516 |
| Countries that End in I | 0 | - | 4.92 | 116,986 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 157,176 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 91,501 |
| Countries That End in NIA | 0 | - | 4.92 | 104,527 |
| Countries That End in BIA | 0 | - | 4.92 | 141,577 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 160,058 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 113,953 |
| Countries That End in RIA | 0 | - | 4.89 | 104,860 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 105,035 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 212,993 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 126,061 |
| Divided Country Name Puzzle #3 | 0 | - | 4.91 | 117,737 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 83,740 |
| Countries With One Word and Three A's | 0 | - | 4.93 | 47,827 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 96,899 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 119,048 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 45,724 |
| Countries with the Word "And" | 0 | - | 4.98 | 88,886 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 46,631 |
| Countries that End in L | 0 | - | 4.94 | 150,999 |
| "Land" Countries | 0 | - | 4.98 | 298,391 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 195,769 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 83,720 |
| City to Country Quiz #1 | 0 | - | 4.95 | 138,379 |
| City to Country Quiz #3 | 0 | - | 4.87 | 103,111 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 74,819 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 217,702 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 191,268 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 121,458 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 139,454 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 214,303 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 146,145 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 68,407 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 105,389 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 84,573 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 59,295 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,369,931 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 362,081 |
| One Border Countries | 0 | - | 4.98 | 437,939 |
| Top-Producing Countries | 0 | - | 4.69 | 102,299 |
| Country Codes Quiz | 0 | - | 4.45 | 80,263 |
| Countries on the Equator | 0 | - | 4.74 | 136,984 |
| Members of the Arab League | 0 | - | 4.78 | 74,454 |
| Separatist Movements | 0 | - | 4.46 | 44,180 |
| Prime Meridian Countries | 0 | - | 4.69 | 58,482 |
| Next Country Alphabetically | 0 | - | 4.73 | 83,124 |
| Easternmost Countries | 0 | - | 4.71 | 61,571 |
| Countries With the Most ISIS Fighters | 0 | - | 4.53 | 38,397 |
| Top 10 Most Famous Island Countries | 0 | - | 4.68 | 103,228 |
| Indochina Countries | 0 | - | 4.70 | 64,407 |
| Atlantic Ocean Island Countries | 0 | - | 4.55 | 63,913 |
| Countries With the Most Conflict Deaths | 0 | - | 4.64 | 93,803 |
| Highest Foreign Aid Recipients | 0 | - | 4.64 | 43,251 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,139 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 47,101 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 44,322 |
| Countries that are the Source of Refugees | 0 | - | 4.65 | 58,661 |
| Countries 206 to 242 | 0 | - | 4.71 | 32,345 |
| Most Populous Countries By Category | 0 | - | 4.55 | 63,524 |
| Countries with the Most Turkic People | 0 | - | 4.78 | 43,805 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.78 | 59,351 |
| Flyover Countries | 0 | - | 4.64 | 49,035 |
| Top 50 Countries by Area - In Order | 0 | - | 4.75 | 70,133 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 38,732 |
