| Landlocked Countries Quiz | 0 | - | 4.99 | 318,416 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,537,160 |
| Countries on the Equator | 0 | - | 4.83 | 133,059 |
| Members of the Arab League | 0 | - | 4.82 | 59,626 |
| Sahara Desert Countries | 0 | - | 4.97 | 125,382 |
| Himalayan Countries | 0 | - | 4.95 | 102,746 |
| Andean Countries | 0 | - | 4.90 | 57,099 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 57,942 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,642 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 101,986 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,616 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,810 |
| Danube Countries | 0 | - | 4.97 | 56,396 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,436 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,630 |
| Countries with the Best Passports | 0 | - | 4.87 | 70,488 |
| Countries with the Worst Passports | 0 | - | 4.87 | 48,880 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,493 |
| European Landlocked Countries | 0 | - | 4.99 | 114,889 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,847 |
| Countries with the Most Species | 0 | - | 4.99 | 89,111 |
| Countries 197 to 205 | 0 | - | 4.88 | 55,917 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,478 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,845 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,830 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,158 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 58,497 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,754 |
| Countries in the Alps | 0 | - | 4.83 | 101,963 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,767 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 85,986 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,186 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,809 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,448 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,141 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,137 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,816 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,101 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,234 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 68,980 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,365 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,446 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,052 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,560 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,054 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,812 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,005 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,015 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 193,358 |
| World Countries - Blind Typing | 0 | - | 5.00 | 71,625 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,007 |
| Largest Countries By Category | 0 | - | 4.96 | 144,034 |
| Countries by Countries | 0 | - | 4.96 | 54,183 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,427 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 77,490 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,027,542 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,915 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 352,331 |
| Island Countries Quiz | 0 | - | 4.99 | 639,396 |
| Biggest Countries by Area | 0 | - | 5.00 | 926,063 |
| Northernmost Countries | 0 | - | 4.99 | 325,588 |
| Countries of South America | 0 | - | 5.00 | 785,028 |
| Countries of Oceania | 0 | - | 5.00 | 883,799 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,115,443 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,554,968 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,410 |
| Countries with Megacities | 0 | - | 4.99 | 195,099 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,755 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 97,008 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,894 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,871 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,525 |
| Countries by Official Language | 0 | - | 4.95 | 153,664 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 247,120 |
| Countries in their Native Language | 0 | - | 4.98 | 177,178 |
| Independence from Whom | 0 | - | 4.99 | 184,001 |
| Subdivisions by Country | 0 | - | 4.82 | 46,233 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 112,439 |
| Megadiverse Countries | 0 | - | 4.96 | 124,846 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 90,146 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 106,088 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,161 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 130,212 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 48,801 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,016 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,394 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,577 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,057 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 43,117 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,885 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,464 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,532 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,028 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,825 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 80,489 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,861 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,539 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,245 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,209 |
| Countries With the Most Languages | 0 | - | 4.90 | 171,903 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.92 | 86,655 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 70,973 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,618 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,397 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,936 |
| Widest Countries East to West | 0 | - | 4.93 | 118,818 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,710 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 158,027 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,151 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,892 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 118,219 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,627 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,292 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,887 |
| Countries with Double Letters | 0 | - | 4.96 | 67,217 |
| Countries that End in N | 0 | - | 4.94 | 131,668 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 228,375 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 185,929 |
| Countries with W | 0 | - | 4.97 | 121,906 |
| Countries with Z | 0 | - | 4.98 | 243,076 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,799 |
| Countries That End in U | 0 | - | 4.94 | 107,119 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 88,536 |
| Countries that End in O | 0 | - | 4.92 | 146,515 |
| Countries that End in R | 0 | - | 4.86 | 96,200 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,949 |
| Countries Ending in "IA" | 0 | - | 4.99 | 170,185 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,027 |
| Countries by Last Two Letters | 0 | - | 4.90 | 115,699 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 128,640 |
| Countries That End in Y | 0 | - | 4.90 | 161,021 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 159,823 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 119,974 |
| Countries that End in I | 0 | - | 4.92 | 114,221 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 148,606 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 87,908 |
| Countries That End in NIA | 0 | - | 4.93 | 100,413 |
| Countries That End in BIA | 0 | - | 4.91 | 125,472 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 152,520 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,157 |
| Countries That End in RIA | 0 | - | 4.89 | 100,544 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 99,858 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 199,042 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 118,820 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 109,641 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 76,539 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 91,654 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,063 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 42,457 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 39,936 |
| Countries that End in L | 0 | - | 4.95 | 133,486 |
| "Land" Countries | 0 | - | 4.98 | 288,113 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 187,950 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,091 |
| City to Country Quiz #1 | 0 | - | 4.94 | 133,855 |
| City to Country Quiz #3 | 0 | - | 4.86 | 99,830 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,184 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 206,520 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 161,489 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 115,828 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 131,808 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 192,264 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,117 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,521 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,726 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 81,959 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,651 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,303,783 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,821 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,039,921 |
| One Border Countries | 0 | - | 4.98 | 407,056 |
| Countries With One Word and Three A's | 0 | - | 4.84 | 30,310 |
| Top-Producing Countries | 0 | - | 4.71 | 99,665 |
| Country Codes Quiz | 0 | - | 4.44 | 76,676 |
| Separatist Movements | 0 | - | 4.45 | 42,430 |
| Prime Meridian Countries | 0 | - | 4.64 | 51,755 |
| Next Country Alphabetically | 0 | - | 4.75 | 68,287 |
| Westernmost Countries | 0 | - | 4.50 | 47,327 |
| Easternmost Countries | 0 | - | 4.76 | 60,235 |
| Countries With the Most ISIS Fighters | 0 | - | 4.56 | 36,879 |
| Top 10 Most Famous Island Countries | 0 | - | 4.66 | 97,865 |
| Indochina Countries | 0 | - | 4.72 | 62,577 |
| Atlantic Ocean Island Countries | 0 | - | 4.55 | 62,910 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 90,499 |
| Highest Foreign Aid Recipients | 0 | - | 4.58 | 42,273 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,015 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.76 | 45,772 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 42,433 |
| Countries that are the Source of Refugees | 0 | - | 4.66 | 56,146 |
| Most Populous Countries By Category | 0 | - | 4.64 | 61,054 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 41,762 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.66 | 44,668 |
| Flyover Countries | 0 | - | 4.72 | 35,685 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 66,284 |
| Countries with the Most Coral Reefs | 0 | - | 4.65 | 37,339 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 41,884 |
| Most Recent Countries to Join the United Nations | 0 | - | 4.53 | 31,728 |
| Countries by Total Area of Bordering Countries | 0 | - | 4.79 | 49,164 |
| Countries with the Most Light Pollution | 0 | - | 4.53 | 44,038 |
| Present-Day Communist Nations | 0 | - | 4.49 | 43,082 |
