| Landlocked Countries Quiz | 0 | - | 4.99 | 329,828 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,376,481 |
| Members of the Arab League | 0 | - | 4.85 | 64,560 |
| Sahara Desert Countries | 0 | - | 4.97 | 128,891 |
| Himalayan Countries | 0 | - | 4.95 | 106,830 |
| Andean Countries | 0 | - | 4.91 | 59,415 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 60,479 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,252 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 103,613 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,530 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,831 |
| Danube Countries | 0 | - | 4.96 | 56,980 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,002 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,106 |
| Countries with the Best Passports | 0 | - | 4.87 | 72,034 |
| Countries with the Worst Passports | 0 | - | 4.88 | 49,939 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 110,221 |
| European Landlocked Countries | 0 | - | 4.99 | 136,441 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,349 |
| Countries with the Most Species | 0 | - | 4.99 | 89,699 |
| Countries 197 to 205 | 0 | - | 4.88 | 56,853 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,880 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,171 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,660 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,933 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,543 |
| Countries in the Alps | 0 | - | 4.84 | 103,304 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,922 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 88,373 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,955 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,010 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,482 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,984 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,133 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,492 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,524 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,078 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,835 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,809 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,863 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,190 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,349 |
| Countries with the Most Grassland | 0 | - | 4.94 | 69,919 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 99,388 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,673 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 53,733 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 199,432 |
| World Countries - Blind Typing | 0 | - | 5.00 | 74,141 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,575 |
| Largest Countries By Category | 0 | - | 4.97 | 145,743 |
| Countries by Countries | 0 | - | 4.96 | 55,144 |
| Country Flags with the Most White | 0 | - | 4.90 | 125,410 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,976 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,953 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,124,589 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,193,950 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 343,059 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 359,191 |
| Island Countries Quiz | 0 | - | 4.99 | 664,851 |
| Biggest Countries by Area | 0 | - | 5.00 | 940,419 |
| Northernmost Countries | 0 | - | 4.99 | 329,334 |
| Countries of South America | 0 | - | 5.00 | 802,441 |
| Countries of Oceania | 0 | - | 5.00 | 904,329 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,593,133 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 127,628 |
| Countries with Megacities | 0 | - | 4.99 | 199,817 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,416 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,005 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 97,013 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 64,975 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 250,609 |
| Countries by Official Language | 0 | - | 4.96 | 174,181 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 251,273 |
| Countries in their Native Language | 0 | - | 4.98 | 179,403 |
| Independence from Whom | 0 | - | 4.99 | 187,576 |
| Subdivisions by Country | 0 | - | 4.82 | 46,696 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,608 |
| Megadiverse Countries | 0 | - | 4.96 | 126,168 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 92,508 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,138 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,636 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 132,359 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,509 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 78,814 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,681 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,393 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,674 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 44,478 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,951 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,583 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,148 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,023 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,646 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 84,416 |
| World Map Quiz | 0 | - | 4.91 | 50,455 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 116,109 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 82,161 |
| Southernmost Countries of the World | 0 | - | 4.99 | 208,512 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 91,904 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 109,137 |
| Countries With the Most Languages | 0 | - | 4.91 | 175,776 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,059 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 72,437 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 87,501 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 54,561 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,055 |
| Widest Countries East to West | 0 | - | 4.93 | 120,011 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,994 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,823 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,996 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,149 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,017 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,749 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,630 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,251 |
| Countries with Double Letters | 0 | - | 4.96 | 69,984 |
| Countries that End in N | 0 | - | 4.94 | 134,215 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 231,559 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 188,936 |
| Countries with W | 0 | - | 4.96 | 124,184 |
| Countries with Z | 0 | - | 4.98 | 246,243 |
| Countries with Letters Missing | 0 | - | 4.97 | 168,404 |
| Countries That End in U | 0 | - | 4.95 | 108,324 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 90,813 |
| Countries that End in O | 0 | - | 4.92 | 147,547 |
| Countries that End in R | 0 | - | 4.84 | 96,848 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,660 |
| Countries Ending in "IA" | 0 | - | 4.99 | 172,720 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 156,917 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,120 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 130,062 |
| Countries That End in Y | 0 | - | 4.90 | 162,001 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 162,082 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 121,559 |
| Countries that End in I | 0 | - | 4.92 | 114,856 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 150,618 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,957 |
| Countries That End in NIA | 0 | - | 4.93 | 101,373 |
| Countries That End in BIA | 0 | - | 4.91 | 126,747 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 154,287 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 110,402 |
| Countries That End in RIA | 0 | - | 4.90 | 101,483 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,120 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 202,975 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 120,754 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 111,776 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 78,401 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,223 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 97,464 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,287 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 41,645 |
| Countries that End in L | 0 | - | 4.95 | 135,263 |
| "Land" Countries | 0 | - | 4.98 | 291,260 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 190,437 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,302 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,853 |
| City to Country Quiz #3 | 0 | - | 4.86 | 100,664 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 72,171 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 209,791 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 168,854 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,211 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 134,038 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 195,232 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 141,638 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,278 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 102,793 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,840 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 56,970 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,320,417 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 351,441 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,092,793 |
| One Border Countries | 0 | - | 4.98 | 412,767 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,390 |
| Top-Producing Countries | 0 | - | 4.71 | 100,521 |
| Country Codes Quiz | 0 | - | 4.46 | 77,799 |
| Countries on the Equator | 0 | - | 4.78 | 134,820 |
| Separatist Movements | 0 | - | 4.45 | 42,943 |
| Prime Meridian Countries | 0 | - | 4.63 | 52,033 |
| Next Country Alphabetically | 0 | - | 4.79 | 79,278 |
| Westernmost Countries | 0 | - | 4.50 | 47,732 |
| Easternmost Countries | 0 | - | 4.76 | 60,649 |
| Countries With the Most ISIS Fighters | 0 | - | 4.57 | 37,341 |
| Top 10 Most Famous Island Countries | 0 | - | 4.71 | 99,697 |
| Indochina Countries | 0 | - | 4.72 | 63,082 |
| Atlantic Ocean Island Countries | 0 | - | 4.54 | 63,246 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 91,558 |
| Highest Foreign Aid Recipients | 0 | - | 4.70 | 42,581 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,330 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.76 | 46,153 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 43,040 |
| Countries that are the Source of Refugees | 0 | - | 4.69 | 56,813 |
| Most Populous Countries By Category | 0 | - | 4.63 | 61,800 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 42,369 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.66 | 45,380 |
| Flyover Countries | 0 | - | 4.65 | 47,644 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 67,235 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 37,727 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 42,737 |
| Most Recent Countries to Join the United Nations | 0 | - | 4.53 | 31,945 |
| Countries by Total Area of Bordering Countries | 0 | - | 4.79 | 49,849 |
