| Landlocked Countries Quiz | 0 | - | 4.99 | 318,506 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,542,049 |
| Countries on the Equator | 0 | - | 4.83 | 133,099 |
| Members of the Arab League | 0 | - | 4.82 | 59,659 |
| Sahara Desert Countries | 0 | - | 4.97 | 125,400 |
| Himalayan Countries | 0 | - | 4.95 | 102,760 |
| Andean Countries | 0 | - | 4.90 | 57,109 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 57,958 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,645 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 101,992 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,619 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,815 |
| Danube Countries | 0 | - | 4.97 | 56,399 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,437 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,632 |
| Countries with the Best Passports | 0 | - | 4.87 | 70,495 |
| Countries with the Worst Passports | 0 | - | 4.87 | 48,884 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,507 |
| European Landlocked Countries | 0 | - | 4.99 | 114,889 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,851 |
| Countries with the Most Species | 0 | - | 4.99 | 89,111 |
| Countries 197 to 205 | 0 | - | 4.88 | 55,925 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,479 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,847 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,831 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,168 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 58,498 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,760 |
| Countries in the Alps | 0 | - | 4.83 | 101,968 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,772 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 85,998 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,192 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,817 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,454 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,144 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,147 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,822 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,103 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,239 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 68,986 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,369 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,455 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,057 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,565 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,058 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,834 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,008 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,019 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 193,391 |
| World Countries - Blind Typing | 0 | - | 5.00 | 71,637 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,008 |
| Largest Countries By Category | 0 | - | 4.96 | 144,044 |
| Countries by Countries | 0 | - | 4.96 | 54,186 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,429 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 77,500 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,028,059 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,943 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 352,370 |
| Island Countries Quiz | 0 | - | 4.99 | 639,429 |
| Biggest Countries by Area | 0 | - | 5.00 | 926,166 |
| Northernmost Countries | 0 | - | 4.99 | 325,611 |
| Countries of South America | 0 | - | 5.00 | 785,119 |
| Countries of Oceania | 0 | - | 5.00 | 883,954 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,115,905 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,555,187 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,421 |
| Countries with Megacities | 0 | - | 4.99 | 195,128 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,768 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 97,013 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,911 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,886 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,553 |
| Countries by Official Language | 0 | - | 4.95 | 153,676 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 247,153 |
| Countries in their Native Language | 0 | - | 4.98 | 177,187 |
| Independence from Whom | 0 | - | 4.99 | 184,016 |
| Subdivisions by Country | 0 | - | 4.82 | 46,237 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 112,460 |
| Megadiverse Countries | 0 | - | 4.96 | 124,856 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 90,156 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 106,091 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,163 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 130,226 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 48,805 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,029 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,401 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,586 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,079 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 43,131 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,887 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,498 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,532 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,047 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,830 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 80,522 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,876 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,549 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,249 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,219 |
| Countries With the Most Languages | 0 | - | 4.90 | 171,929 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.92 | 86,662 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 70,982 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,623 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,402 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,944 |
| Widest Countries East to West | 0 | - | 4.93 | 118,822 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,714 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 158,036 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,159 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,898 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 118,226 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,632 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,294 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,888 |
| Countries with Double Letters | 0 | - | 4.96 | 67,230 |
| Countries that End in N | 0 | - | 4.94 | 131,690 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 228,398 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 185,951 |
| Countries with W | 0 | - | 4.97 | 121,923 |
| Countries with Z | 0 | - | 4.98 | 243,098 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,817 |
| Countries That End in U | 0 | - | 4.94 | 107,130 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 88,548 |
| Countries that End in O | 0 | - | 4.92 | 146,527 |
| Countries that End in R | 0 | - | 4.86 | 96,203 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,954 |
| Countries Ending in "IA" | 0 | - | 4.99 | 170,204 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,029 |
| Countries by Last Two Letters | 0 | - | 4.90 | 115,704 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 128,644 |
| Countries That End in Y | 0 | - | 4.90 | 161,140 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 159,830 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 119,986 |
| Countries that End in I | 0 | - | 4.92 | 114,222 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 148,621 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 87,913 |
| Countries That End in NIA | 0 | - | 4.93 | 100,418 |
| Countries That End in BIA | 0 | - | 4.91 | 125,486 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 152,526 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,164 |
| Countries That End in RIA | 0 | - | 4.89 | 100,550 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 99,861 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 199,063 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 118,840 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 109,656 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 76,551 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 91,660 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,067 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 42,464 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 39,942 |
| Countries that End in L | 0 | - | 4.95 | 133,495 |
| "Land" Countries | 0 | - | 4.98 | 288,122 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 187,956 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,093 |
| City to Country Quiz #1 | 0 | - | 4.94 | 133,862 |
| City to Country Quiz #3 | 0 | - | 4.86 | 99,833 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,189 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 206,553 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 161,868 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 115,842 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 131,823 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 192,282 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,138 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,537 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,729 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 81,968 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,656 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,303,887 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,840 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,040,211 |
| One Border Countries | 0 | - | 4.98 | 407,084 |
| Countries With One Word and Three A's | 0 | - | 4.84 | 30,325 |
| Top-Producing Countries | 0 | - | 4.71 | 99,670 |
| Country Codes Quiz | 0 | - | 4.44 | 76,680 |
| Separatist Movements | 0 | - | 4.45 | 42,432 |
| Prime Meridian Countries | 0 | - | 4.64 | 51,756 |
| Next Country Alphabetically | 0 | - | 4.75 | 68,290 |
| Westernmost Countries | 0 | - | 4.50 | 47,329 |
| Easternmost Countries | 0 | - | 4.76 | 60,236 |
| Countries With the Most ISIS Fighters | 0 | - | 4.56 | 36,881 |
| Top 10 Most Famous Island Countries | 0 | - | 4.66 | 97,873 |
| Indochina Countries | 0 | - | 4.72 | 62,583 |
| Atlantic Ocean Island Countries | 0 | - | 4.55 | 62,914 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 90,502 |
| Highest Foreign Aid Recipients | 0 | - | 4.58 | 42,277 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,017 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.76 | 45,778 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 42,440 |
| Countries that are the Source of Refugees | 0 | - | 4.66 | 56,148 |
| Most Populous Countries By Category | 0 | - | 4.64 | 61,061 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 41,767 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.66 | 44,676 |
| Flyover Countries | 0 | - | 4.72 | 35,692 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 66,294 |
| Countries with the Most Coral Reefs | 0 | - | 4.65 | 37,342 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 41,890 |
| Most Recent Countries to Join the United Nations | 0 | - | 4.53 | 31,730 |
| Countries by Total Area of Bordering Countries | 0 | - | 4.79 | 49,172 |
| Countries with the Most Light Pollution | 0 | - | 4.53 | 44,041 |
| Present-Day Communist Nations | 0 | - | 4.49 | 43,083 |
