| Landlocked Countries | 0 | - | 4.99 | 418,398 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,301,858 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,704 |
| Himalayan Countries | 0 | - | 4.94 | 137,176 |
| Andean Countries | 0 | - | 4.95 | 83,796 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,042 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,445 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,731 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,269 |
| Danube Countries | 0 | - | 4.97 | 71,600 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,465 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,999 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,547 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,612 |
| European Landlocked Countries | 0 | - | 4.99 | 146,707 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,045 |
| Countries with the Most Species | 0 | - | 4.99 | 102,843 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,184 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,410 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,565 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,268 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,940 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,319 |
| Countries in the Alps | 0 | - | 4.87 | 117,607 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,083 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,268 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,375 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,925 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,035 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,407 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,213 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,139 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,935 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,510 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,449 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,309 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,882 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,158 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,172 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,077 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,026 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,541 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,455 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,121 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,105 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,957 |
| Largest Countries By Category | 0 | - | 4.97 | 157,553 |
| Countries by Countries | 0 | - | 4.96 | 62,793 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,137 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,147 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,461 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,277 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,753,974 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,555 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,470 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,862 |
| Island Countries | 0 | - | 4.99 | 709,549 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,552 |
| Northernmost Countries | 0 | - | 4.99 | 360,259 |
| Countries of South America | 0 | - | 5.00 | 922,325 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,211 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,008 |
| "Land" Countries | 0 | - | 4.98 | 335,685 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,860 |
| Countries with Megacities | 0 | - | 4.99 | 255,277 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,720 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,902 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,020 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,897 |
| Countries by Official Language | 0 | - | 4.95 | 194,560 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,422 |
| Countries in their Native Language | 0 | - | 4.99 | 198,105 |
| Independence from Whom | 0 | - | 4.99 | 211,215 |
| Subdivisions by Country | 0 | - | 4.86 | 50,267 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,623 |
| Megadiverse Countries | 0 | - | 4.96 | 134,737 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,399 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,159 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,724 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,002 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,660 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,346 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,903 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,806 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,465 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,966 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,856 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,684 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,955 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,753 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,114 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,303 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,374,693 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,064 |
| World Map Quiz | 0 | - | 4.81 | 64,433 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,352 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,983 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,415 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,882 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,592 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,219 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,474 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,644 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,788 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,237 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,242 |
| Widest Countries East to West | 0 | - | 4.92 | 129,325 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,375 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,903 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,982 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,482 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,166 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,505 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,219 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,717 |
| Countries with Double Letters | 0 | - | 4.97 | 95,011 |
| Countries that End in N | 0 | - | 4.95 | 169,807 |
| Countries with Five Letters | 0 | - | 4.96 | 279,624 |
| Countries with Six Letters | 0 | - | 4.94 | 212,382 |
| Countries with W | 0 | - | 4.97 | 159,465 |
| Countries with Z | 0 | - | 4.98 | 289,711 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,668 |
| Countries That End in U | 0 | - | 4.95 | 120,379 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,685 |
| Countries that End in O | 0 | - | 4.92 | 159,168 |
| Countries that End in R | 0 | - | 4.87 | 118,715 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,491 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,233 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,058 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,051 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,637 |
| Countries That End in Y | 0 | - | 4.90 | 185,629 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,167 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,362 |
| Countries that End in I | 0 | - | 4.94 | 134,837 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,020 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,552 |
| Countries That End in NIA | 0 | - | 4.92 | 109,490 |
| Countries That End in BIA | 0 | - | 4.93 | 148,802 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,663 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,015 |
| Countries That End in RIA | 0 | - | 4.93 | 126,499 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,589 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,568 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,163 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,503 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,062 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,290 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,644 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,193 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,076 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,174 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,776 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,488 |
| Countries that End in L | 0 | - | 4.94 | 156,517 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,827 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,145 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,814 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,688 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,741 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,691 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,085 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,569 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,050 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,543 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,534 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,935 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,584 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,636 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,633 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,562 |
| One Border Countries | 0 | - | 4.98 | 467,445 |
| Top Producing Countries | 0 | - | 4.63 | 116,109 |
| ISO Country Codes | 0 | - | 4.45 | 82,335 |
| Countries on the Equator | 0 | - | 4.63 | 140,611 |
| Members of the Arab League | 0 | - | 4.77 | 75,565 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,755 |
| Separatist Movements | 0 | - | 4.44 | 45,791 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,004 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,739 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,129 |
| Westernmost Countries | 0 | - | 4.50 | 49,503 |
| Easternmost Countries | 0 | - | 4.75 | 62,779 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,584 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,365 |
| Indochina Countries | 0 | - | 4.74 | 66,082 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,573 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,229 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,947 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,050 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,310 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,579 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,760 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,850 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,250 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,585 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,447 |
| Flyover Countries | 0 | - | 4.68 | 50,713 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,708 |
| Countries with the Most Coral Reefs | 0 | - | 4.77 | 48,444 |
