| Countries by National Anthem | 0 | - | 4.95 | 68,755 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,845,626 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 335,391 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.93 | 1,211,198 |
| Countries by Emojis | 0 | - | 4.99 | 210,122 |
| Countries With One Word And Two O's | 0 | - | 4.91 | 36,144 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,182,915 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,236,341 |
| Members of the Arab League | 0 | - | 4.86 | 66,657 |
| Sahara Desert Countries | 0 | - | 4.97 | 130,795 |
| Himalayan Countries | 0 | - | 4.94 | 108,735 |
| Andean Countries | 0 | - | 4.91 | 60,400 |
| Countries with the Oldest Median Age | 0 | - | 4.82 | 61,594 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,998 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 104,632 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,931 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 54,376 |
| Danube Countries | 0 | - | 4.96 | 57,295 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,289 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,348 |
| Countries with the Best Passports | 0 | - | 4.86 | 72,853 |
| Countries with the Worst Passports | 0 | - | 4.89 | 50,528 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 111,190 |
| European Landlocked Countries | 0 | - | 4.99 | 137,296 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,947 |
| Countries with the Most Species | 0 | - | 4.99 | 90,096 |
| Countries 197 to 205 | 0 | - | 4.87 | 57,472 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 45,066 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,359 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 49,152 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,945 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 59,172 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 50,011 |
| Countries in the Alps | 0 | - | 4.84 | 103,997 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,569 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 89,816 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,377 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,484 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 95,003 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,434 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,657 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,837 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,753 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,495 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 70,257 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 49,082 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 37,070 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,675 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,760 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,339 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 100,851 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 62,036 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 123,544 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 102,438 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 54,126 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 203,341 |
| World Countries - Blind Typing | 0 | - | 5.00 | 75,723 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,903 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 104,821 |
| Biggest Countries with No McDonald's | 0 | - | 4.85 | 82,016 |
| Largest Countries By Category | 0 | - | 4.97 | 146,591 |
| Countries by Countries | 0 | - | 4.95 | 55,712 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.90 | 88,539 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,267 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,783 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 96,397 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 345,544 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 363,391 |
| Island Countries Quiz | 0 | - | 4.99 | 669,477 |
| Biggest Countries by Area | 0 | - | 5.00 | 949,022 |
| Northernmost Countries | 0 | - | 4.99 | 331,220 |
| Countries of South America | 0 | - | 5.00 | 811,677 |
| Countries of Oceania | 0 | - | 5.00 | 915,633 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,615,221 |
| Countries that Produce the Most Beer | 0 | - | 4.87 | 118,028 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 193,278 |
| Name a Valid Asian Country | 0 | - | 4.98 | 93,845 |
| Name a Valid African Country | 0 | - | 4.98 | 126,482 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,330,584 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,733 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,336 |
| Countries with Megacities | 0 | - | 4.99 | 202,231 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,700 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 100,131 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,490 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 66,080 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,569 |
| Countries by Official Language | 0 | - | 4.96 | 175,471 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 253,915 |
| Countries in their Native Language | 0 | - | 4.98 | 180,826 |
| Independence from Whom | 0 | - | 4.99 | 189,699 |
| Subdivisions by Country | 0 | - | 4.85 | 46,945 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 115,870 |
| Megadiverse Countries | 0 | - | 4.96 | 126,901 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 94,134 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,685 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,870 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 133,503 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,970 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,805 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 146,110 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,782 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,885 |
| Countries by Sports League Revenue | 0 | - | 4.89 | 45,233 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,337 |
| Countries Furthest from the United States | 0 | - | 4.94 | 73,032 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,574 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,470 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 66,095 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,122,378 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 86,972 |
| World Map Quiz | 0 | - | 4.90 | 51,661 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 82,847 |
| Southernmost Countries of the World | 0 | - | 4.99 | 209,998 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,977 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 110,351 |
| Countries With the Most Languages | 0 | - | 4.90 | 178,111 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,791 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 73,206 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 88,442 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 55,196 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,698 |
| Widest Countries East to West | 0 | - | 4.93 | 120,663 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,150 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 160,714 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,920 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,474 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,959 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,769 |
| Countries with the Most Desert | 0 | - | 4.92 | 106,610 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,828 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,449 |
| Foods by Country of Origin #1 | 0 | - | 4.42 | 317,364 |
| Countries with Double Letters | 0 | - | 4.96 | 72,562 |
| Countries that End in N | 0 | - | 4.94 | 136,798 |
| Countries with Five Letters Quiz | 0 | - | 4.97 | 234,582 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 191,138 |
| Countries with W | 0 | - | 4.96 | 126,233 |
| Countries with Z | 0 | - | 4.98 | 265,271 |
| Countries with Letters Missing | 0 | - | 4.97 | 170,093 |
| Countries That End in U | 0 | - | 4.95 | 109,813 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 92,900 |
| Countries that End in O | 0 | - | 4.92 | 148,937 |
| Countries that End in R | 0 | - | 4.85 | 97,506 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 148,445 |
| Countries Ending in "IA" | 0 | - | 4.99 | 174,532 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,921 |
| Countries by Last Two Letters | 0 | - | 4.89 | 117,851 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 130,789 |
| Countries That End in Y | 0 | - | 4.92 | 177,576 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 163,191 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 122,756 |
| Countries that End in I | 0 | - | 4.92 | 115,314 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 151,820 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,495 |
| Countries That End in NIA | 0 | - | 4.92 | 101,930 |
| Countries That End in BIA | 0 | - | 4.91 | 127,463 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 155,337 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 111,094 |
| Countries That End in RIA | 0 | - | 4.90 | 102,007 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 101,914 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 205,150 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 121,881 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 113,027 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 79,525 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 41,545 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,956 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 98,309 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,790 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 42,673 |
| Countries that End in L | 0 | - | 4.95 | 136,004 |
| "Land" Countries | 0 | - | 4.98 | 292,577 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 191,447 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 82,943 |
| City to Country Quiz #1 | 0 | - | 4.95 | 135,470 |
| City to Country Quiz #3 | 0 | - | 4.87 | 101,146 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,728 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 211,339 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 171,198 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,951 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 135,059 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 196,628 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 142,699 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,672 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 103,404 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 83,345 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,464 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,476,549 |
| One Border Countries | 0 | - | 4.98 | 416,259 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 67,588 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 248,631 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,727 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 104,354 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 72,430 |
| Random Capital to Country | 0 | - | 4.99 | 2,399,908 |
| Random Country to Capital | 0 | - | 4.98 | 816,483 |
| Majority Muslim Countries | 0 | - | 4.97 | 317,961 |
| NATO Countries Quiz | 0 | - | 4.98 | 243,472 |
| EU Countries Quiz | 0 | - | 4.99 | 231,768 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 146,646 |
