| Landlocked Countries Quiz | 0 | - | 4.99 | 318,749 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,556,898 |
| Countries on the Equator | 0 | - | 4.83 | 133,217 |
| Members of the Arab League | 0 | - | 4.83 | 59,749 |
| Sahara Desert Countries | 0 | - | 4.97 | 125,459 |
| Himalayan Countries | 0 | - | 4.95 | 102,843 |
| Andean Countries | 0 | - | 4.90 | 57,148 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 58,004 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,662 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,009 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,633 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,831 |
| Danube Countries | 0 | - | 4.97 | 56,403 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,442 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,641 |
| Countries with the Best Passports | 0 | - | 4.87 | 70,517 |
| Countries with the Worst Passports | 0 | - | 4.87 | 48,903 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,537 |
| European Landlocked Countries | 0 | - | 4.99 | 114,896 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,869 |
| Countries with the Most Species | 0 | - | 4.99 | 89,116 |
| Countries 197 to 205 | 0 | - | 4.88 | 55,940 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,484 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,851 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,844 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,172 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 58,499 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,768 |
| Countries in the Alps | 0 | - | 4.83 | 101,988 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,786 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 86,043 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,203 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,834 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,472 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,157 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,165 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,834 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,112 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,250 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,005 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,378 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,467 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,073 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,580 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,074 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,879 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,020 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,029 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 193,555 |
| World Countries - Blind Typing | 0 | - | 5.00 | 71,694 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,018 |
| Largest Countries By Category | 0 | - | 4.96 | 144,072 |
| Countries by Countries | 0 | - | 4.96 | 54,199 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,445 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 77,525 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,029,787 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 339,018 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 352,478 |
| Island Countries Quiz | 0 | - | 4.99 | 639,553 |
| Biggest Countries by Area | 0 | - | 5.00 | 926,424 |
| Northernmost Countries | 0 | - | 4.99 | 325,664 |
| Countries of South America | 0 | - | 5.00 | 785,382 |
| Countries of Oceania | 0 | - | 5.00 | 884,317 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,117,258 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,555,812 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,462 |
| Countries with Megacities | 0 | - | 4.99 | 195,201 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,830 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 97,048 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,958 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,917 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,642 |
| Countries by Official Language | 0 | - | 4.95 | 153,706 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 247,219 |
| Countries in their Native Language | 0 | - | 4.98 | 177,227 |
| Independence from Whom | 0 | - | 4.99 | 184,071 |
| Subdivisions by Country | 0 | - | 4.82 | 46,247 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 112,502 |
| Megadiverse Countries | 0 | - | 4.96 | 124,873 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 90,198 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 106,105 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,168 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 130,251 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 48,821 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,068 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,415 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,596 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,114 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 43,165 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,901 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,564 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,536 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,104 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,845 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 80,584 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,905 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,596 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,279 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,244 |
| Countries With the Most Languages | 0 | - | 4.90 | 171,966 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.92 | 86,679 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 71,005 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,641 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,415 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,963 |
| Widest Countries East to West | 0 | - | 4.93 | 118,837 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,719 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 158,064 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,169 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,917 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 118,251 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,651 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,303 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,899 |
| Countries with Double Letters | 0 | - | 4.96 | 67,285 |
| Countries that End in N | 0 | - | 4.94 | 131,739 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 228,470 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 186,001 |
| Countries with W | 0 | - | 4.97 | 121,960 |
| Countries with Z | 0 | - | 4.98 | 243,152 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,853 |
| Countries That End in U | 0 | - | 4.94 | 107,163 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 88,583 |
| Countries that End in O | 0 | - | 4.92 | 146,545 |
| Countries that End in R | 0 | - | 4.86 | 96,223 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,964 |
| Countries Ending in "IA" | 0 | - | 4.99 | 170,272 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,062 |
| Countries by Last Two Letters | 0 | - | 4.90 | 115,734 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 128,672 |
| Countries That End in Y | 0 | - | 4.90 | 161,349 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 159,861 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 120,021 |
| Countries that End in I | 0 | - | 4.92 | 114,239 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 148,659 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 87,928 |
| Countries That End in NIA | 0 | - | 4.93 | 100,442 |
| Countries That End in BIA | 0 | - | 4.91 | 125,505 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 152,545 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,197 |
| Countries That End in RIA | 0 | - | 4.89 | 100,567 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 99,891 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 199,115 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 118,870 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 109,699 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 76,583 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 91,679 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,095 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 42,478 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 39,967 |
| Countries that End in L | 0 | - | 4.95 | 133,515 |
| "Land" Countries | 0 | - | 4.98 | 288,170 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 187,989 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,095 |
| City to Country Quiz #1 | 0 | - | 4.94 | 133,879 |
| City to Country Quiz #3 | 0 | - | 4.86 | 99,842 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,205 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 206,634 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 162,526 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 115,879 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 131,876 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 192,356 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,175 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,551 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,744 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 81,985 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,672 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,304,152 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,892 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,041,085 |
| One Border Countries | 0 | - | 4.98 | 407,164 |
| Countries With One Word and Three A's | 0 | - | 4.84 | 30,340 |
| Top-Producing Countries | 0 | - | 4.71 | 99,677 |
| Country Codes Quiz | 0 | - | 4.44 | 76,691 |
| Separatist Movements | 0 | - | 4.45 | 42,439 |
| Prime Meridian Countries | 0 | - | 4.64 | 51,759 |
| Next Country Alphabetically | 0 | - | 4.74 | 68,297 |
| Westernmost Countries | 0 | - | 4.50 | 47,340 |
| Easternmost Countries | 0 | - | 4.76 | 60,245 |
| Countries With the Most ISIS Fighters | 0 | - | 4.56 | 36,889 |
| Top 10 Most Famous Island Countries | 0 | - | 4.66 | 97,897 |
| Indochina Countries | 0 | - | 4.72 | 62,597 |
| Atlantic Ocean Island Countries | 0 | - | 4.55 | 62,928 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 90,523 |
| Highest Foreign Aid Recipients | 0 | - | 4.58 | 42,280 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,026 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.76 | 45,783 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 42,451 |
| Countries that are the Source of Refugees | 0 | - | 4.66 | 56,166 |
| Most Populous Countries By Category | 0 | - | 4.64 | 61,069 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 41,781 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.70 | 44,691 |
| Flyover Countries | 0 | - | 4.72 | 35,702 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 66,317 |
| Countries with the Most Coral Reefs | 0 | - | 4.65 | 37,354 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 41,901 |
| Most Recent Countries to Join the United Nations | 0 | - | 4.53 | 31,740 |
| Countries by Total Area of Bordering Countries | 0 | - | 4.79 | 49,185 |
| Countries with the Most Light Pollution | 0 | - | 4.53 | 44,054 |
| Present-Day Communist Nations | 0 | - | 4.49 | 43,093 |
