| Landlocked Countries | 0 | - | 4.99 | 423,714 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,722,620 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,301 |
| Himalayan Countries | 0 | - | 4.94 | 139,473 |
| Andean Countries | 0 | - | 4.94 | 85,027 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,231 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,416 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,788 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,098 |
| Danube Countries | 0 | - | 4.97 | 72,199 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,289 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,616 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,692 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,194 |
| European Landlocked Countries | 0 | - | 4.99 | 147,358 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,963 |
| Countries with the Most Species | 0 | - | 4.99 | 103,408 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,095 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,679 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,790 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,680 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,428 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,844 |
| Countries in the Alps | 0 | - | 4.87 | 118,474 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,036 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,425 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,804 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,801 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,724 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,093 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,902 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,660 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,290 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,012 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,756 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,623 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,378 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,632 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,716 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,347 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,470 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,171 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,346 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,860 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,632 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,374 |
| Largest Countries By Category | 0 | - | 4.97 | 158,530 |
| Countries by Countries | 0 | - | 4.96 | 63,432 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,991 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,344 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,615 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,892 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,791,299 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,120 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,069 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,465 |
| Island Countries | 0 | - | 4.99 | 711,715 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,263 |
| Northernmost Countries | 0 | - | 4.99 | 362,979 |
| Countries of South America | 0 | - | 5.00 | 929,828 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,033 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,882,901 |
| "Land" Countries | 0 | - | 4.98 | 337,842 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,418 |
| Countries with Megacities | 0 | - | 4.99 | 265,784 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,211 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,739 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,471 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,825 |
| Countries by Official Language | 0 | - | 4.95 | 195,614 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,966 |
| Countries in their Native Language | 0 | - | 4.99 | 199,387 |
| Independence from Whom | 0 | - | 4.99 | 212,528 |
| Subdivisions by Country | 0 | - | 4.87 | 50,524 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,056 |
| Megadiverse Countries | 0 | - | 4.96 | 135,152 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,414 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,453 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,337 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,160 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,360 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,693 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,718 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,463 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,743 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,205 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,070 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,105 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,320 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,053 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,469 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,595 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,388,198 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,776 |
| World Map Quiz | 0 | - | 4.81 | 65,366 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,215 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,524 |
| Countries by Founding Story | 0 | - | 4.95 | 77,524 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,614 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,639 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,304 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,920 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,172 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,298 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,509 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,573 |
| Tallest Countries North to South | 0 | - | 4.85 | 128,272 |
| Widest Countries East to West | 0 | - | 4.92 | 130,146 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,522 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,005 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,437 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,921 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,796 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,068 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,445 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,847 |
| Countries with Double Letters | 0 | - | 4.96 | 96,646 |
| Countries that End in N | 0 | - | 4.95 | 171,539 |
| Countries with Five Letters | 0 | - | 4.96 | 283,158 |
| Countries with Six Letters | 0 | - | 4.94 | 213,993 |
| Countries with W | 0 | - | 4.96 | 160,615 |
| Countries with Z | 0 | - | 4.98 | 291,926 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,986 |
| Countries That End in U | 0 | - | 4.95 | 121,006 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,773 |
| Countries that End in O | 0 | - | 4.92 | 159,660 |
| Countries that End in R | 0 | - | 4.87 | 119,064 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,825 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,447 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,924 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,644 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,566 |
| Countries That End in Y | 0 | - | 4.91 | 185,990 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,179 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,062 |
| Countries that End in I | 0 | - | 4.94 | 135,207 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,362 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,926 |
| Countries That End in NIA | 0 | - | 4.92 | 109,909 |
| Countries That End in BIA | 0 | - | 4.93 | 149,390 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,327 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,600 |
| Countries That End in RIA | 0 | - | 4.93 | 126,934 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,205 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,065 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,943 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,384 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,915 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,683 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,178 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,488 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,707 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,540 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,505 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,192 |
| Countries that End in L | 0 | - | 4.94 | 156,983 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,648 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,303 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,146 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,079 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,123 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,080 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,906 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,293 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,043 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,710 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,041 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,171 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,755 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,110 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,056 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,674 |
| One Border Countries | 0 | - | 4.98 | 470,889 |
| Top Producing Countries | 0 | - | 4.63 | 116,343 |
| ISO Country Codes | 0 | - | 4.49 | 91,512 |
| Countries on the Equator | 0 | - | 4.63 | 141,108 |
| Members of the Arab League | 0 | - | 4.77 | 75,676 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,993 |
| Separatist Movements | 0 | - | 4.45 | 45,964 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,417 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,875 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,353 |
| Westernmost Countries | 0 | - | 4.43 | 62,503 |
| Easternmost Countries | 0 | - | 4.74 | 63,028 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,717 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,835 |
| Indochina Countries | 0 | - | 4.74 | 66,275 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,666 |
| Countries With the Most Conflict Deaths | 0 | - | 4.62 | 96,425 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 44,011 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,139 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,453 |
| Countries with More Sheep than People | 0 | - | 4.48 | 31,848 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,786 |
| Countries that are the Source of Refugees | 0 | - | 4.78 | 74,741 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,019 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,578 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,794 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,689 |
| Flyover Countries | 0 | - | 4.69 | 50,923 |
