| Landlocked Countries Quiz | 0 | - | 4.99 | 334,591 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,781,788 |
| Members of the Arab League | 0 | - | 4.86 | 66,396 |
| Sahara Desert Countries | 0 | - | 4.97 | 130,566 |
| Himalayan Countries | 0 | - | 4.94 | 108,515 |
| Andean Countries | 0 | - | 4.91 | 60,267 |
| Countries with the Oldest Median Age | 0 | - | 4.82 | 61,431 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,884 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 104,509 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,871 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 54,293 |
| Danube Countries | 0 | - | 4.96 | 57,246 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,255 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,314 |
| Countries with the Best Passports | 0 | - | 4.86 | 72,753 |
| Countries with the Worst Passports | 0 | - | 4.88 | 50,440 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 111,077 |
| European Landlocked Countries | 0 | - | 4.99 | 137,242 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,848 |
| Countries with the Most Species | 0 | - | 4.99 | 89,869 |
| Countries 197 to 205 | 0 | - | 4.87 | 57,380 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 45,035 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,328 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 49,089 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,901 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 59,146 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,955 |
| Countries in the Alps | 0 | - | 4.84 | 103,910 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,473 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 89,601 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,309 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,407 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,929 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,378 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,579 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,791 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,715 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,443 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 70,204 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 49,045 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 37,038 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,606 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,699 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,271 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 100,645 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,983 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 54,075 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 202,765 |
| World Countries - Blind Typing | 0 | - | 5.00 | 75,495 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,856 |
| Largest Countries By Category | 0 | - | 4.97 | 146,486 |
| Countries by Countries | 0 | - | 4.95 | 55,644 |
| Country Flags with the Most White | 0 | - | 4.90 | 126,600 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,226 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,666 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,174,239 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,230,460 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 345,209 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 362,819 |
| Island Countries Quiz | 0 | - | 4.99 | 668,852 |
| Biggest Countries by Area | 0 | - | 5.00 | 947,872 |
| Northernmost Countries | 0 | - | 4.99 | 330,993 |
| Countries of South America | 0 | - | 5.00 | 810,318 |
| Countries of Oceania | 0 | - | 5.00 | 914,187 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,612,295 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,095 |
| Countries with Megacities | 0 | - | 4.99 | 201,926 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,446 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,991 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,289 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,925 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,158 |
| Countries by Official Language | 0 | - | 4.96 | 175,291 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 253,351 |
| Countries in their Native Language | 0 | - | 4.98 | 180,642 |
| Independence from Whom | 0 | - | 4.99 | 189,437 |
| Subdivisions by Country | 0 | - | 4.84 | 46,906 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 115,679 |
| Megadiverse Countries | 0 | - | 4.96 | 126,826 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 93,963 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,605 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,836 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 133,378 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,905 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,671 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 146,053 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,735 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,861 |
| Countries by Sports League Revenue | 0 | - | 4.89 | 45,097 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,283 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,958 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,495 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,413 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 66,042 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 86,598 |
| World Map Quiz | 0 | - | 4.90 | 51,496 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 118,604 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 82,755 |
| Southernmost Countries of the World | 0 | - | 4.99 | 209,818 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,854 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 110,088 |
| Countries With the Most Languages | 0 | - | 4.90 | 177,820 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,707 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 73,097 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 88,326 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 55,110 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,599 |
| Widest Countries East to West | 0 | - | 4.93 | 120,569 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,124 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 160,561 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,840 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,425 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,870 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,672 |
| Countries with the Most Desert | 0 | - | 4.92 | 106,496 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,803 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,419 |
| Countries with Double Letters | 0 | - | 4.96 | 71,848 |
| Countries that End in N | 0 | - | 4.94 | 136,025 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 233,910 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 190,598 |
| Countries with W | 0 | - | 4.96 | 125,686 |
| Countries with Z | 0 | - | 4.98 | 264,717 |
| Countries with Letters Missing | 0 | - | 4.97 | 169,704 |
| Countries That End in U | 0 | - | 4.95 | 109,352 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 92,400 |
| Countries that End in O | 0 | - | 4.92 | 148,661 |
| Countries that End in R | 0 | - | 4.85 | 97,325 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 148,178 |
| Countries Ending in "IA" | 0 | - | 4.99 | 174,207 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,722 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,711 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 130,653 |
| Countries That End in Y | 0 | - | 4.90 | 162,428 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 163,016 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 122,400 |
| Countries that End in I | 0 | - | 4.92 | 115,206 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 151,654 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,397 |
| Countries That End in NIA | 0 | - | 4.92 | 101,830 |
| Countries That End in BIA | 0 | - | 4.91 | 127,326 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 155,177 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 110,985 |
| Countries That End in RIA | 0 | - | 4.90 | 101,903 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,780 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 204,649 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 121,644 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 112,781 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 79,322 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,914 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,856 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 98,184 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,697 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 42,514 |
| Countries that End in L | 0 | - | 4.95 | 135,853 |
| "Land" Countries | 0 | - | 4.98 | 292,370 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 191,292 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 82,898 |
| City to Country Quiz #1 | 0 | - | 4.95 | 135,379 |
| City to Country Quiz #3 | 0 | - | 4.87 | 101,089 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,633 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 211,136 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 171,047 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,840 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 134,943 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 196,447 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 142,596 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,631 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 103,329 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 83,287 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,388 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,329,183 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,449 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,118,227 |
| One Border Countries | 0 | - | 4.98 | 415,856 |
| Top-Producing Countries | 0 | - | 4.71 | 100,793 |
| Country Codes Quiz | 0 | - | 4.45 | 78,299 |
| Countries on the Equator | 0 | - | 4.78 | 135,199 |
| Separatist Movements | 0 | - | 4.45 | 43,145 |
| Prime Meridian Countries | 0 | - | 4.63 | 52,165 |
| Next Country Alphabetically | 0 | - | 4.75 | 80,913 |
| Westernmost Countries | 0 | - | 4.50 | 47,898 |
| Easternmost Countries | 0 | - | 4.76 | 60,812 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 37,517 |
| Top 10 Most Famous Island Countries | 0 | - | 4.71 | 100,358 |
| Indochina Countries | 0 | - | 4.72 | 63,338 |
| Atlantic Ocean Island Countries | 0 | - | 4.54 | 63,375 |
| Countries With the Most Conflict Deaths | 0 | - | 4.64 | 92,139 |
| Highest Foreign Aid Recipients | 0 | - | 4.70 | 42,711 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,492 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.75 | 46,327 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 43,301 |
| Countries that are the Source of Refugees | 0 | - | 4.69 | 57,123 |
| Most Populous Countries By Category | 0 | - | 4.57 | 62,121 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 42,621 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.66 | 45,724 |
| Flyover Countries | 0 | - | 4.65 | 47,924 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 67,798 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 37,915 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 43,136 |
