| Landlocked Countries Quiz | 0 | - | 4.99 | 318,587 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,548,154 |
| Countries on the Equator | 0 | - | 4.83 | 133,139 |
| Members of the Arab League | 0 | - | 4.82 | 59,691 |
| Sahara Desert Countries | 0 | - | 4.97 | 125,420 |
| Himalayan Countries | 0 | - | 4.95 | 102,778 |
| Andean Countries | 0 | - | 4.90 | 57,119 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 57,968 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,646 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 101,999 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,625 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,820 |
| Danube Countries | 0 | - | 4.97 | 56,401 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,439 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,636 |
| Countries with the Best Passports | 0 | - | 4.87 | 70,505 |
| Countries with the Worst Passports | 0 | - | 4.87 | 48,892 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,522 |
| European Landlocked Countries | 0 | - | 4.99 | 114,891 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,859 |
| Countries with the Most Species | 0 | - | 4.99 | 89,112 |
| Countries 197 to 205 | 0 | - | 4.88 | 55,932 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,479 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,849 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,836 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,168 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 58,499 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,764 |
| Countries in the Alps | 0 | - | 4.83 | 101,973 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,780 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 86,012 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,196 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,825 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,464 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,150 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,152 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,826 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,104 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,245 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 68,993 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,372 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,456 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,066 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,571 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,065 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,850 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,010 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,022 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 193,442 |
| World Countries - Blind Typing | 0 | - | 5.00 | 71,660 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,011 |
| Largest Countries By Category | 0 | - | 4.96 | 144,060 |
| Countries by Countries | 0 | - | 4.96 | 54,189 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,438 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 77,512 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,028,671 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,979 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 352,415 |
| Island Countries Quiz | 0 | - | 4.99 | 639,485 |
| Biggest Countries by Area | 0 | - | 5.00 | 926,277 |
| Northernmost Countries | 0 | - | 4.99 | 325,639 |
| Countries of South America | 0 | - | 5.00 | 785,231 |
| Countries of Oceania | 0 | - | 5.00 | 884,137 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,116,483 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,555,437 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,439 |
| Countries with Megacities | 0 | - | 4.99 | 195,163 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,791 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 97,022 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,929 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,900 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,589 |
| Countries by Official Language | 0 | - | 4.95 | 153,689 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 247,177 |
| Countries in their Native Language | 0 | - | 4.98 | 177,205 |
| Independence from Whom | 0 | - | 4.99 | 184,045 |
| Subdivisions by Country | 0 | - | 4.82 | 46,239 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 112,479 |
| Megadiverse Countries | 0 | - | 4.96 | 124,860 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 90,173 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 106,100 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,165 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 130,236 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 48,810 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,047 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,408 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,592 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,096 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 43,154 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,898 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,531 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,534 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,079 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,834 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 80,544 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,888 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,566 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,263 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,231 |
| Countries With the Most Languages | 0 | - | 4.90 | 171,942 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.92 | 86,670 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 70,989 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,628 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,409 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,953 |
| Widest Countries East to West | 0 | - | 4.93 | 118,826 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,714 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 158,050 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,160 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,907 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 118,236 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,643 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,295 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,894 |
| Countries with Double Letters | 0 | - | 4.96 | 67,256 |
| Countries that End in N | 0 | - | 4.94 | 131,717 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 228,428 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 185,971 |
| Countries with W | 0 | - | 4.97 | 121,939 |
| Countries with Z | 0 | - | 4.98 | 243,120 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,833 |
| Countries That End in U | 0 | - | 4.94 | 107,152 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 88,559 |
| Countries that End in O | 0 | - | 4.92 | 146,539 |
| Countries that End in R | 0 | - | 4.86 | 96,217 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,958 |
| Countries Ending in "IA" | 0 | - | 4.99 | 170,235 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,042 |
| Countries by Last Two Letters | 0 | - | 4.90 | 115,720 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 128,657 |
| Countries That End in Y | 0 | - | 4.90 | 161,281 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 159,845 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 120,001 |
| Countries that End in I | 0 | - | 4.92 | 114,229 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 148,635 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 87,920 |
| Countries That End in NIA | 0 | - | 4.93 | 100,431 |
| Countries That End in BIA | 0 | - | 4.91 | 125,496 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 152,532 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,182 |
| Countries That End in RIA | 0 | - | 4.89 | 100,559 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 99,871 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 199,084 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 118,851 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 109,676 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 76,565 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 91,663 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,084 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 42,469 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 39,956 |
| Countries that End in L | 0 | - | 4.95 | 133,508 |
| "Land" Countries | 0 | - | 4.98 | 288,151 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 187,970 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,095 |
| City to Country Quiz #1 | 0 | - | 4.94 | 133,870 |
| City to Country Quiz #3 | 0 | - | 4.86 | 99,834 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,195 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 206,586 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 162,175 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 115,863 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 131,839 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 192,314 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,150 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,541 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,733 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 81,974 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,662 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,304,010 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,857 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,040,590 |
| One Border Countries | 0 | - | 4.98 | 407,122 |
| Countries With One Word and Three A's | 0 | - | 4.84 | 30,329 |
| Top-Producing Countries | 0 | - | 4.71 | 99,674 |
| Country Codes Quiz | 0 | - | 4.44 | 76,683 |
| Separatist Movements | 0 | - | 4.45 | 42,437 |
| Prime Meridian Countries | 0 | - | 4.64 | 51,756 |
| Next Country Alphabetically | 0 | - | 4.75 | 68,292 |
| Westernmost Countries | 0 | - | 4.50 | 47,335 |
| Easternmost Countries | 0 | - | 4.76 | 60,242 |
| Countries With the Most ISIS Fighters | 0 | - | 4.56 | 36,884 |
| Top 10 Most Famous Island Countries | 0 | - | 4.66 | 97,885 |
| Indochina Countries | 0 | - | 4.72 | 62,589 |
| Atlantic Ocean Island Countries | 0 | - | 4.55 | 62,916 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 90,509 |
| Highest Foreign Aid Recipients | 0 | - | 4.58 | 42,279 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,017 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.76 | 45,780 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 42,445 |
| Countries that are the Source of Refugees | 0 | - | 4.66 | 56,158 |
| Most Populous Countries By Category | 0 | - | 4.64 | 61,065 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 41,772 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.66 | 44,683 |
| Flyover Countries | 0 | - | 4.72 | 35,699 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 66,299 |
| Countries with the Most Coral Reefs | 0 | - | 4.65 | 37,347 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 41,894 |
| Most Recent Countries to Join the United Nations | 0 | - | 4.53 | 31,738 |
| Countries by Total Area of Bordering Countries | 0 | - | 4.79 | 49,179 |
| Countries with the Most Light Pollution | 0 | - | 4.53 | 44,046 |
| Present-Day Communist Nations | 0 | - | 4.49 | 43,087 |
