| Landlocked Countries | 0 | - | 4.99 | 420,271 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,443,190 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,619 |
| Himalayan Countries | 0 | - | 4.95 | 138,018 |
| Andean Countries | 0 | - | 4.95 | 84,221 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,437 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,232 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,089 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,527 |
| Danube Countries | 0 | - | 4.97 | 71,803 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,746 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,193 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,922 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,296 |
| European Landlocked Countries | 0 | - | 4.99 | 146,941 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,338 |
| Countries with the Most Species | 0 | - | 4.99 | 103,069 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,500 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,491 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,645 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,427 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,110 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,495 |
| Countries in the Alps | 0 | - | 4.87 | 117,932 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 98,895 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,660 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,532 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,427 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,275 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,822 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,448 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,318 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,062 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,682 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,554 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,410 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,052 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,331 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,344 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,486 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,158 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,669 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,781 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,064 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,614 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,086 |
| Largest Countries By Category | 0 | - | 4.97 | 157,885 |
| Countries by Countries | 0 | - | 4.97 | 62,989 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,436 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,208 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,504 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,483 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,766,318 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,109 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,987 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,124 |
| Island Countries | 0 | - | 4.99 | 710,304 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,643 |
| Northernmost Countries | 0 | - | 4.99 | 361,132 |
| Countries of South America | 0 | - | 5.00 | 924,819 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,696 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,309 |
| "Land" Countries | 0 | - | 4.98 | 336,137 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,415 |
| Countries with Megacities | 0 | - | 4.99 | 263,179 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,248 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,220 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,541 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,250 |
| Countries by Official Language | 0 | - | 4.95 | 194,901 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,892 |
| Countries in their Native Language | 0 | - | 4.99 | 198,430 |
| Independence from Whom | 0 | - | 4.99 | 211,671 |
| Subdivisions by Country | 0 | - | 4.86 | 50,347 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,946 |
| Megadiverse Countries | 0 | - | 4.96 | 134,867 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,760 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,247 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,839 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,056 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,889 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,464 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,191 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,925 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,554 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,032 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,317 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,786 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,085 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,856 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,246 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,407 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,158 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,601 |
| World Map Quiz | 0 | - | 4.81 | 64,837 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,309 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,173 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,751 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,073 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,808 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,728 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,688 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,828 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,956 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,343 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,420 |
| Widest Countries East to West | 0 | - | 4.92 | 129,488 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,415 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,142 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,052 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,630 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,394 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,691 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,305 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,758 |
| Countries with Double Letters | 0 | - | 4.97 | 95,355 |
| Countries that End in N | 0 | - | 4.95 | 170,391 |
| Countries with Five Letters | 0 | - | 4.96 | 281,282 |
| Countries with Six Letters | 0 | - | 4.94 | 212,802 |
| Countries with W | 0 | - | 4.97 | 159,707 |
| Countries with Z | 0 | - | 4.98 | 290,611 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,974 |
| Countries That End in U | 0 | - | 4.95 | 120,515 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,985 |
| Countries that End in O | 0 | - | 4.92 | 159,284 |
| Countries that End in R | 0 | - | 4.87 | 118,804 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,569 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,586 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,317 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,214 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,828 |
| Countries That End in Y | 0 | - | 4.91 | 185,717 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,520 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,600 |
| Countries that End in I | 0 | - | 4.94 | 134,947 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,713 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,665 |
| Countries That End in NIA | 0 | - | 4.92 | 109,621 |
| Countries That End in BIA | 0 | - | 4.93 | 148,974 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,880 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,197 |
| Countries That End in RIA | 0 | - | 4.93 | 126,636 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,771 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,074 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,403 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,794 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,327 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,411 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,794 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,357 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,291 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,286 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,993 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,710 |
| Countries that End in L | 0 | - | 4.94 | 156,648 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,743 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,189 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,910 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,820 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,868 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,323 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,380 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,793 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,319 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,821 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,705 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,014 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,637 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,756 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,413 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,251 |
| One Border Countries | 0 | - | 4.98 | 468,524 |
| Top Producing Countries | 0 | - | 4.63 | 116,182 |
| ISO Country Codes | 0 | - | 4.45 | 87,329 |
| Countries on the Equator | 0 | - | 4.63 | 140,726 |
| Members of the Arab League | 0 | - | 4.77 | 75,609 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,843 |
| Separatist Movements | 0 | - | 4.44 | 45,863 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,144 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,785 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,217 |
| Westernmost Countries | 0 | - | 4.42 | 62,160 |
| Easternmost Countries | 0 | - | 4.75 | 62,867 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,623 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,517 |
| Indochina Countries | 0 | - | 4.74 | 66,132 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,607 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,302 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,964 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,075 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,362 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,646 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,852 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,901 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,373 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,644 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,531 |
| Flyover Countries | 0 | - | 4.69 | 50,774 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,838 |
| Countries with the Most Coral Reefs | 0 | - | 4.77 | 48,507 |
