| Landlocked Countries | 0 | - | 4.99 | 415,491 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,067,884 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,352 |
| Himalayan Countries | 0 | - | 4.95 | 136,016 |
| Andean Countries | 0 | - | 4.94 | 83,188 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,513 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,656 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,199 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,847 |
| Danube Countries | 0 | - | 4.97 | 71,277 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,015 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,719 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,892 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,836 |
| European Landlocked Countries | 0 | - | 4.99 | 145,979 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,550 |
| Countries with the Most Species | 0 | - | 4.99 | 95,353 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,674 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,272 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,446 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,074 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,723 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,088 |
| Countries in the Alps | 0 | - | 4.86 | 117,143 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,768 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,618 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,166 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,600 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,398 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,152 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,817 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,906 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,704 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,214 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,279 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,146 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,628 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,889 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,905 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,490 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,803 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,351 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,051 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,335 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,235 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,738 |
| Largest Countries By Category | 0 | - | 4.97 | 157,051 |
| Countries by Countries | 0 | - | 4.96 | 62,456 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,690 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,030 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,383 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,959 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,731,917 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,929 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,853 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,855 |
| Island Countries | 0 | - | 4.99 | 708,372 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,884 |
| Northernmost Countries | 0 | - | 4.99 | 358,769 |
| Countries of South America | 0 | - | 5.00 | 918,044 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,459 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,854,778 |
| "Land" Countries | 0 | - | 4.98 | 334,125 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,937 |
| Countries with Megacities | 0 | - | 4.99 | 248,274 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,842 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,377 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,227 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,309 |
| Countries by Official Language | 0 | - | 4.95 | 193,212 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,766 |
| Countries in their Native Language | 0 | - | 4.99 | 197,042 |
| Independence from Whom | 0 | - | 4.99 | 210,188 |
| Subdivisions by Country | 0 | - | 4.86 | 50,153 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,084 |
| Megadiverse Countries | 0 | - | 4.96 | 134,469 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,217 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,023 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,552 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,911 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,896 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,138 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,356 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,460 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,307 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,788 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,958 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,527 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,631 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,593 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,802 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,128 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,367,458 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,177 |
| World Map Quiz | 0 | - | 4.81 | 63,822 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,736 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,600 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,807 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,537 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,263 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,372 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,129 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,324 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,519 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,088 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,540 |
| Widest Countries East to West | 0 | - | 4.92 | 129,040 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,288 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,507 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,660 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,874 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,849 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,242 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,761 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,646 |
| Countries with Double Letters | 0 | - | 4.96 | 93,720 |
| Countries that End in N | 0 | - | 4.94 | 157,163 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,067 |
| Countries with Six Letters | 0 | - | 4.93 | 210,737 |
| Countries with W | 0 | - | 4.97 | 158,436 |
| Countries with Z | 0 | - | 4.98 | 288,279 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,781 |
| Countries That End in U | 0 | - | 4.95 | 119,625 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,901 |
| Countries that End in O | 0 | - | 4.92 | 158,669 |
| Countries that End in R | 0 | - | 4.87 | 118,385 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,940 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,446 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,578 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,671 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,218 |
| Countries That End in Y | 0 | - | 4.90 | 185,298 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,640 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,924 |
| Countries that End in I | 0 | - | 4.94 | 134,553 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,505 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,314 |
| Countries That End in NIA | 0 | - | 4.92 | 109,136 |
| Countries That End in BIA | 0 | - | 4.92 | 147,869 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,279 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,648 |
| Countries That End in RIA | 0 | - | 4.93 | 126,211 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,199 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,774 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,703 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,051 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,613 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,040 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,300 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,817 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,704 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,907 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,371 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,016 |
| Countries that End in L | 0 | - | 4.94 | 156,173 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,239 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,024 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,635 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,473 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,539 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,030 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,659 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,838 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,676 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,068 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,944 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,831 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,245 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,470 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,437 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,143 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,423 |
| One Border Countries | 0 | - | 4.98 | 465,807 |
| Top Producing Countries | 0 | - | 4.63 | 115,982 |
| ISO Country Codes | 0 | - | 4.45 | 82,222 |
| Countries on the Equator | 0 | - | 4.63 | 140,415 |
| Members of the Arab League | 0 | - | 4.77 | 75,509 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,642 |
| Separatist Movements | 0 | - | 4.44 | 45,712 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,742 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,675 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,017 |
| Westernmost Countries | 0 | - | 4.50 | 49,455 |
| Easternmost Countries | 0 | - | 4.75 | 62,715 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,520 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,046 |
| Indochina Countries | 0 | - | 4.74 | 65,991 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,548 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,845 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,902 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,987 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,241 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,485 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,653 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,770 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,076 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,474 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,322 |
| Flyover Countries | 0 | - | 4.68 | 50,621 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,518 |
