| Landlocked Countries | 0 | - | 4.99 | 424,830 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,808,672 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,785 |
| Himalayan Countries | 0 | - | 4.93 | 139,879 |
| Andean Countries | 0 | - | 4.94 | 85,239 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,412 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,740 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,977 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,281 |
| Danube Countries | 0 | - | 4.97 | 72,296 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,448 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,738 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,920 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,415 |
| European Landlocked Countries | 0 | - | 4.99 | 147,493 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,140 |
| Countries with the Most Species | 0 | - | 4.99 | 103,508 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,285 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,722 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,836 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,769 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,504 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,933 |
| Countries in the Alps | 0 | - | 4.87 | 118,644 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,411 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,672 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,898 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,926 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,849 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,166 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,289 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,793 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,360 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,095 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,806 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,677 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,475 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,712 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,802 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,587 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,541 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,628 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,527 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,330 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,916 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,456 |
| Largest Countries By Category | 0 | - | 4.97 | 158,715 |
| Countries by Countries | 0 | - | 4.96 | 63,543 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,150 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,373 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,649 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,012 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,798,357 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,697 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,417 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,181 |
| Island Countries | 0 | - | 4.99 | 712,204 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,661 |
| Northernmost Countries | 0 | - | 4.99 | 363,576 |
| Countries of South America | 0 | - | 5.00 | 931,368 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,756 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,338 |
| "Land" Countries | 0 | - | 4.98 | 338,165 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,908 |
| Countries with Megacities | 0 | - | 4.99 | 266,626 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,612 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,981 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,913 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,080 |
| Countries by Official Language | 0 | - | 4.95 | 195,836 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,408 |
| Countries in their Native Language | 0 | - | 4.99 | 199,613 |
| Independence from Whom | 0 | - | 4.99 | 212,858 |
| Subdivisions by Country | 0 | - | 4.87 | 50,577 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,288 |
| Megadiverse Countries | 0 | - | 4.96 | 135,213 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,821 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,495 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,401 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,199 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,489 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,787 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,996 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,523 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,785 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,231 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,315 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,329 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,395 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,113 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,539 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,654 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,505 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,121 |
| World Map Quiz | 0 | - | 4.81 | 65,554 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,790 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,619 |
| Countries by Founding Story | 0 | - | 4.95 | 77,718 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,063 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,982 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,459 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,332 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,317 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,445 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,647 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,635 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,389 |
| Widest Countries East to West | 0 | - | 4.92 | 130,360 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,576 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,152 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,482 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,001 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,895 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,390 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,471 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,873 |
| Countries with Double Letters | 0 | - | 4.96 | 96,879 |
| Countries that End in N | 0 | - | 4.95 | 171,766 |
| Countries with Five Letters | 0 | - | 4.96 | 283,512 |
| Countries with Six Letters | 0 | - | 4.94 | 214,236 |
| Countries with W | 0 | - | 4.96 | 160,806 |
| Countries with Z | 0 | - | 4.98 | 292,229 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,159 |
| Countries That End in U | 0 | - | 4.95 | 121,107 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,966 |
| Countries that End in O | 0 | - | 4.92 | 159,745 |
| Countries that End in R | 0 | - | 4.87 | 119,128 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,886 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,668 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,049 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,752 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,679 |
| Countries That End in Y | 0 | - | 4.91 | 186,044 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,345 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,176 |
| Countries that End in I | 0 | - | 4.94 | 135,264 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,513 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,003 |
| Countries That End in NIA | 0 | - | 4.92 | 109,989 |
| Countries That End in BIA | 0 | - | 4.93 | 149,507 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,426 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,699 |
| Countries That End in RIA | 0 | - | 4.93 | 127,009 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,301 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,381 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,070 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,510 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,075 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,761 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,258 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,520 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,818 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,605 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,625 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,313 |
| Countries that End in L | 0 | - | 4.94 | 157,062 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,546 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,329 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,189 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,770 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,353 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,292 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,046 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,374 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,176 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,874 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,144 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,210 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,801 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,182 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,798 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,140 |
| One Border Countries | 0 | - | 4.98 | 471,507 |
| Top Producing Countries | 0 | - | 4.63 | 116,386 |
| ISO Country Codes | 0 | - | 4.49 | 91,586 |
| Countries on the Equator | 0 | - | 4.63 | 141,183 |
| Members of the Arab League | 0 | - | 4.77 | 75,703 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 70,028 |
| Separatist Movements | 0 | - | 4.45 | 46,000 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,507 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,905 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,402 |
| Westernmost Countries | 0 | - | 4.43 | 62,529 |
| Easternmost Countries | 0 | - | 4.74 | 63,053 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,746 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,937 |
| Indochina Countries | 0 | - | 4.74 | 66,314 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,673 |
| Countries With the Most Conflict Deaths | 0 | - | 4.62 | 96,710 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 44,022 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,154 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,479 |
| Countries with More Sheep than People | 0 | - | 4.48 | 31,976 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,828 |
| Countries that are the Source of Refugees | 0 | - | 4.78 | 75,337 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,047 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,638 |
| Countries with the Most Turkic People | 0 | - | 4.77 | 45,839 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,729 |
| Flyover Countries | 0 | - | 4.69 | 50,968 |
