| Landlocked Countries Quiz | 0 | - | 4.99 | 330,598 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,437,119 |
| Members of the Arab League | 0 | - | 4.85 | 64,842 |
| Sahara Desert Countries | 0 | - | 4.97 | 129,105 |
| Himalayan Countries | 0 | - | 4.95 | 107,067 |
| Andean Countries | 0 | - | 4.91 | 59,566 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 60,626 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,342 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 103,736 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,591 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,900 |
| Danube Countries | 0 | - | 4.96 | 57,027 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,041 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,130 |
| Countries with the Best Passports | 0 | - | 4.87 | 72,150 |
| Countries with the Worst Passports | 0 | - | 4.88 | 50,015 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 110,304 |
| European Landlocked Countries | 0 | - | 4.99 | 136,659 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,421 |
| Countries with the Most Species | 0 | - | 4.99 | 89,729 |
| Countries 197 to 205 | 0 | - | 4.87 | 56,930 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,900 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,199 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,757 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,698 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,968 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,597 |
| Countries in the Alps | 0 | - | 4.84 | 103,405 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,018 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 88,544 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,010 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,078 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,557 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,044 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,193 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,539 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,559 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,133 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,894 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,854 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,895 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,252 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,401 |
| Countries with the Most Grassland | 0 | - | 4.94 | 69,974 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 99,580 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,720 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 53,797 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 199,916 |
| World Countries - Blind Typing | 0 | - | 5.00 | 74,346 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,623 |
| Largest Countries By Category | 0 | - | 4.97 | 145,868 |
| Countries by Countries | 0 | - | 4.96 | 55,226 |
| Country Flags with the Most White | 0 | - | 4.90 | 125,534 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,024 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,044 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,132,249 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,199,205 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 343,318 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 359,762 |
| Island Countries Quiz | 0 | - | 4.99 | 665,484 |
| Biggest Countries by Area | 0 | - | 5.00 | 941,554 |
| Northernmost Countries | 0 | - | 4.99 | 329,579 |
| Countries of South America | 0 | - | 5.00 | 803,543 |
| Countries of Oceania | 0 | - | 5.00 | 905,677 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,595,972 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 127,826 |
| Countries with Megacities | 0 | - | 4.99 | 200,124 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,674 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,128 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 97,203 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 65,112 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 250,962 |
| Countries by Official Language | 0 | - | 4.96 | 174,362 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 251,554 |
| Countries in their Native Language | 0 | - | 4.98 | 179,527 |
| Independence from Whom | 0 | - | 4.99 | 187,818 |
| Subdivisions by Country | 0 | - | 4.82 | 46,727 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,764 |
| Megadiverse Countries | 0 | - | 4.96 | 126,229 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 92,668 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,211 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,664 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 132,462 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,576 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 78,956 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,745 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,439 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,703 |
| Countries by Sports League Revenue | 0 | - | 4.89 | 44,572 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,000 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,643 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,186 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,083 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,711 |
| Countries of the World in Alphabetical Order | 0 | - | 4.99 | 84,711 |
| World Map Quiz | 0 | - | 4.91 | 50,616 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 116,513 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 82,241 |
| Southernmost Countries of the World | 0 | - | 4.99 | 208,746 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,031 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 109,270 |
| Countries With the Most Languages | 0 | - | 4.91 | 176,017 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,149 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 72,540 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 87,621 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 54,667 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,133 |
| Widest Countries East to West | 0 | - | 4.93 | 120,091 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,015 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,919 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,447 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,052 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,225 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,129 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,831 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,661 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,274 |
| Countries with Double Letters | 0 | - | 4.96 | 70,214 |
| Countries that End in N | 0 | - | 4.94 | 134,430 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 231,783 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 189,144 |
| Countries with W | 0 | - | 4.96 | 124,326 |
| Countries with Z | 0 | - | 4.98 | 246,746 |
| Countries with Letters Missing | 0 | - | 4.97 | 168,575 |
| Countries That End in U | 0 | - | 4.95 | 108,428 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 90,999 |
| Countries that End in O | 0 | - | 4.92 | 147,958 |
| Countries that End in R | 0 | - | 4.84 | 96,908 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,714 |
| Countries Ending in "IA" | 0 | - | 4.99 | 172,896 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,044 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,223 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 130,154 |
| Countries That End in Y | 0 | - | 4.90 | 162,053 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 162,202 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 121,846 |
| Countries that End in I | 0 | - | 4.92 | 114,914 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 150,746 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,019 |
| Countries That End in NIA | 0 | - | 4.93 | 101,446 |
| Countries That End in BIA | 0 | - | 4.91 | 126,848 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 154,458 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 110,483 |
| Countries That End in RIA | 0 | - | 4.90 | 101,546 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,204 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 203,201 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 120,866 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 111,936 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 78,536 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,345 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 97,574 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,351 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 41,769 |
| Countries that End in L | 0 | - | 4.95 | 135,346 |
| "Land" Countries | 0 | - | 4.98 | 291,438 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 190,577 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,318 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,923 |
| City to Country Quiz #3 | 0 | - | 4.87 | 100,725 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,226 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 210,003 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 169,131 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,286 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 134,160 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 195,392 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 141,750 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,329 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 102,893 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,917 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,028 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,321,773 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 351,966 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,096,608 |
| One Border Countries | 0 | - | 4.98 | 413,106 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,464 |
| Top-Producing Countries | 0 | - | 4.71 | 100,568 |
| Country Codes Quiz | 0 | - | 4.46 | 77,855 |
| Countries on the Equator | 0 | - | 4.78 | 134,876 |
| Separatist Movements | 0 | - | 4.45 | 42,984 |
| Prime Meridian Countries | 0 | - | 4.63 | 52,052 |
| Next Country Alphabetically | 0 | - | 4.72 | 80,293 |
| Westernmost Countries | 0 | - | 4.50 | 47,760 |
| Easternmost Countries | 0 | - | 4.76 | 60,674 |
| Countries With the Most ISIS Fighters | 0 | - | 4.57 | 37,363 |
| Top 10 Most Famous Island Countries | 0 | - | 4.71 | 99,794 |
| Indochina Countries | 0 | - | 4.72 | 63,118 |
| Atlantic Ocean Island Countries | 0 | - | 4.54 | 63,258 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 91,619 |
| Highest Foreign Aid Recipients | 0 | - | 4.70 | 42,599 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,346 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.76 | 46,183 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 43,078 |
| Countries that are the Source of Refugees | 0 | - | 4.69 | 56,849 |
| Most Populous Countries By Category | 0 | - | 4.63 | 61,852 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 42,407 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.66 | 45,434 |
| Flyover Countries | 0 | - | 4.65 | 47,680 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 67,320 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 37,766 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 42,800 |
