| Landlocked Countries | 0 | - | 4.99 | 419,464 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,373,228 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,208 |
| Himalayan Countries | 0 | - | 4.95 | 137,651 |
| Andean Countries | 0 | - | 4.95 | 84,051 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,300 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,800 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,919 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,416 |
| Danube Countries | 0 | - | 4.97 | 71,720 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,637 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,113 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,743 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,818 |
| European Landlocked Countries | 0 | - | 4.99 | 146,833 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,205 |
| Countries with the Most Species | 0 | - | 4.99 | 102,980 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,356 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,442 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,608 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,346 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,019 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,414 |
| Countries in the Alps | 0 | - | 4.87 | 117,768 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,195 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,478 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,453 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,056 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,161 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,754 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,345 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,241 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,003 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,598 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,513 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,362 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,970 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,238 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,254 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,286 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,096 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,598 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,618 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,607 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,359 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,026 |
| Largest Countries By Category | 0 | - | 4.97 | 157,740 |
| Countries by Countries | 0 | - | 4.96 | 62,892 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,283 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,173 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,480 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,382 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,760,126 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,448 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,746 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,393 |
| Island Countries | 0 | - | 4.99 | 709,990 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,636 |
| Northernmost Countries | 0 | - | 4.99 | 360,724 |
| Countries of South America | 0 | - | 5.00 | 923,666 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,081 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,868,225 |
| "Land" Countries | 0 | - | 4.98 | 335,920 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,169 |
| Countries with Megacities | 0 | - | 4.99 | 261,885 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,033 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,079 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,328 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,113 |
| Countries by Official Language | 0 | - | 4.95 | 194,745 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,673 |
| Countries in their Native Language | 0 | - | 4.99 | 198,282 |
| Independence from Whom | 0 | - | 4.99 | 211,452 |
| Subdivisions by Country | 0 | - | 4.86 | 50,307 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,801 |
| Megadiverse Countries | 0 | - | 4.96 | 134,805 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,620 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,209 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,779 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,031 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,765 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,415 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,050 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,870 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,514 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,006 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,110 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,746 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,022 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,808 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,183 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,356 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,926 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,340 |
| World Map Quiz | 0 | - | 4.81 | 64,680 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,849 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,083 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,622 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,996 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,715 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,494 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,590 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,732 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,876 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,300 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,332 |
| Widest Countries East to West | 0 | - | 4.92 | 129,419 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,398 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,014 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,012 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,560 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,284 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,606 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,257 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,736 |
| Countries with Double Letters | 0 | - | 4.97 | 95,173 |
| Countries that End in N | 0 | - | 4.95 | 170,165 |
| Countries with Five Letters | 0 | - | 4.96 | 280,777 |
| Countries with Six Letters | 0 | - | 4.94 | 212,602 |
| Countries with W | 0 | - | 4.97 | 159,578 |
| Countries with Z | 0 | - | 4.98 | 289,926 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,815 |
| Countries That End in U | 0 | - | 4.95 | 120,437 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,826 |
| Countries that End in O | 0 | - | 4.92 | 159,226 |
| Countries that End in R | 0 | - | 4.87 | 118,753 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,531 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,427 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,169 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,126 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,717 |
| Countries That End in Y | 0 | - | 4.91 | 185,666 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,322 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,487 |
| Countries that End in I | 0 | - | 4.94 | 134,901 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,170 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,605 |
| Countries That End in NIA | 0 | - | 4.92 | 109,544 |
| Countries That End in BIA | 0 | - | 4.93 | 148,890 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,781 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,108 |
| Countries That End in RIA | 0 | - | 4.93 | 126,568 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,689 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,845 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,294 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,675 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,209 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,362 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,721 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,289 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,187 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,228 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,892 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,602 |
| Countries that End in L | 0 | - | 4.94 | 156,576 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,264 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,162 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,865 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,753 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,807 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,881 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,250 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,689 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,191 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,687 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,622 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,974 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,611 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,700 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,089 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,917 |
| One Border Countries | 0 | - | 4.98 | 467,977 |
| Top Producing Countries | 0 | - | 4.63 | 116,148 |
| ISO Country Codes | 0 | - | 4.45 | 82,369 |
| Countries on the Equator | 0 | - | 4.63 | 140,668 |
| Members of the Arab League | 0 | - | 4.77 | 75,586 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,805 |
| Separatist Movements | 0 | - | 4.44 | 45,836 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,080 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,765 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,171 |
| Westernmost Countries | 0 | - | 4.42 | 61,565 |
| Easternmost Countries | 0 | - | 4.75 | 62,842 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,603 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,452 |
| Indochina Countries | 0 | - | 4.74 | 66,117 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,592 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,270 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,956 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,062 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,341 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,614 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,810 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,872 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,316 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,616 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,493 |
| Flyover Countries | 0 | - | 4.68 | 50,747 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,766 |
| Countries with the Most Coral Reefs | 0 | - | 4.77 | 48,473 |
