| Landlocked Countries | 0 | - | 4.99 | 424,396 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,773,589 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,586 |
| Himalayan Countries | 0 | - | 4.94 | 139,737 |
| Andean Countries | 0 | - | 4.94 | 85,166 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,343 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,595 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,914 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,203 |
| Danube Countries | 0 | - | 4.97 | 72,260 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,396 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,689 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,836 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,331 |
| European Landlocked Countries | 0 | - | 4.99 | 147,443 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,066 |
| Countries with the Most Species | 0 | - | 4.99 | 103,468 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,203 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,707 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,818 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,737 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,467 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,893 |
| Countries in the Alps | 0 | - | 4.87 | 118,567 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,271 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,578 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,851 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,870 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,795 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,126 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,091 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,729 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,332 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,055 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,786 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,655 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,440 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,672 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,762 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,488 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,513 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,502 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,475 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,160 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,817 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,421 |
| Largest Countries By Category | 0 | - | 4.97 | 158,628 |
| Countries by Countries | 0 | - | 4.96 | 63,497 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,076 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,361 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,641 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,970 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,795,613 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,110 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,279 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,891 |
| Island Countries | 0 | - | 4.99 | 712,015 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,151 |
| Northernmost Countries | 0 | - | 4.99 | 363,362 |
| Countries of South America | 0 | - | 5.00 | 930,770 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,151 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,885,117 |
| "Land" Countries | 0 | - | 4.98 | 338,034 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,767 |
| Countries with Megacities | 0 | - | 4.99 | 266,327 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,485 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,893 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,776 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,001 |
| Countries by Official Language | 0 | - | 4.95 | 195,761 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,284 |
| Countries in their Native Language | 0 | - | 4.99 | 199,542 |
| Independence from Whom | 0 | - | 4.99 | 212,736 |
| Subdivisions by Country | 0 | - | 4.87 | 50,562 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,203 |
| Megadiverse Countries | 0 | - | 4.96 | 135,190 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,751 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,480 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,380 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,179 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,433 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,750 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,890 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,503 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,772 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,222 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,185 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,304 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,370 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,091 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,512 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,629 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,390,475 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,995 |
| World Map Quiz | 0 | - | 4.81 | 65,429 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,567 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,570 |
| Countries by Founding Story | 0 | - | 4.95 | 77,659 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,974 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,935 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,425 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,214 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,279 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,400 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,590 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,617 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,042 |
| Widest Countries East to West | 0 | - | 4.92 | 130,299 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,558 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,098 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,464 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,977 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,851 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,354 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,467 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,862 |
| Countries with Double Letters | 0 | - | 4.96 | 96,790 |
| Countries that End in N | 0 | - | 4.95 | 171,678 |
| Countries with Five Letters | 0 | - | 4.96 | 283,379 |
| Countries with Six Letters | 0 | - | 4.94 | 214,142 |
| Countries with W | 0 | - | 4.96 | 160,736 |
| Countries with Z | 0 | - | 4.98 | 292,114 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,088 |
| Countries That End in U | 0 | - | 4.95 | 121,071 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,893 |
| Countries that End in O | 0 | - | 4.92 | 159,720 |
| Countries that End in R | 0 | - | 4.87 | 119,111 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,856 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,572 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,997 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,708 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,640 |
| Countries That End in Y | 0 | - | 4.91 | 186,023 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,280 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,132 |
| Countries that End in I | 0 | - | 4.94 | 135,250 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,451 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,973 |
| Countries That End in NIA | 0 | - | 4.92 | 109,959 |
| Countries That End in BIA | 0 | - | 4.93 | 149,455 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,388 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,660 |
| Countries That End in RIA | 0 | - | 4.93 | 126,976 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,263 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,249 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,023 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,459 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,026 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,728 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,228 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,507 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,775 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,578 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,582 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,266 |
| Countries that End in L | 0 | - | 4.94 | 157,031 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,963 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,316 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,608 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,379 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,226 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,206 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,994 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,337 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,124 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,808 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,107 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,190 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,778 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,155 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,100 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,982 |
| One Border Countries | 0 | - | 4.98 | 471,291 |
| Top Producing Countries | 0 | - | 4.63 | 116,361 |
| ISO Country Codes | 0 | - | 4.49 | 91,563 |
| Countries on the Equator | 0 | - | 4.63 | 141,157 |
| Members of the Arab League | 0 | - | 4.77 | 75,697 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 70,006 |
| Separatist Movements | 0 | - | 4.45 | 45,985 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,465 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,894 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,378 |
| Westernmost Countries | 0 | - | 4.43 | 62,521 |
| Easternmost Countries | 0 | - | 4.74 | 63,045 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,731 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,900 |
| Indochina Countries | 0 | - | 4.74 | 66,295 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,668 |
| Countries With the Most Conflict Deaths | 0 | - | 4.62 | 96,452 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 44,019 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,147 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,471 |
| Countries with More Sheep than People | 0 | - | 4.48 | 31,939 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,810 |
| Countries that are the Source of Refugees | 0 | - | 4.78 | 75,147 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,034 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,619 |
| Countries with the Most Turkic People | 0 | - | 4.77 | 45,818 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,716 |
| Flyover Countries | 0 | - | 4.69 | 50,954 |
