| Landlocked Countries | 0 | - | 4.99 | 425,004 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,826,008 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,878 |
| Himalayan Countries | 0 | - | 4.93 | 139,951 |
| Andean Countries | 0 | - | 4.94 | 85,280 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,436 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,786 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,014 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,306 |
| Danube Countries | 0 | - | 4.97 | 72,310 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,471 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,750 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,963 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,456 |
| European Landlocked Countries | 0 | - | 4.99 | 147,522 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,176 |
| Countries with the Most Species | 0 | - | 4.99 | 103,515 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,306 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,737 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,849 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,784 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,518 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,948 |
| Countries in the Alps | 0 | - | 4.87 | 118,674 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,463 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,716 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,913 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,952 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,871 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,181 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,309 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,805 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,365 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,107 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,814 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,689 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,489 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,727 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,823 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,650 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,553 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,673 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,566 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,409 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,970 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,467 |
| Largest Countries By Category | 0 | - | 4.97 | 158,746 |
| Countries by Countries | 0 | - | 4.96 | 63,569 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,174 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,377 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,653 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,032 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,799,747 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,869 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,474 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,301 |
| Island Countries | 0 | - | 4.99 | 712,284 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,935 |
| Northernmost Countries | 0 | - | 4.99 | 363,669 |
| Countries of South America | 0 | - | 5.00 | 931,659 |
| Countries of Oceania | 0 | - | 5.00 | 1,062,071 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,972 |
| "Land" Countries | 0 | - | 4.98 | 338,228 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,970 |
| Countries with Megacities | 0 | - | 4.99 | 266,755 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,662 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,010 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,976 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,133 |
| Countries by Official Language | 0 | - | 4.95 | 195,869 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,463 |
| Countries in their Native Language | 0 | - | 4.99 | 199,637 |
| Independence from Whom | 0 | - | 4.99 | 212,907 |
| Subdivisions by Country | 0 | - | 4.87 | 50,588 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,329 |
| Megadiverse Countries | 0 | - | 4.96 | 135,226 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,848 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,504 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,412 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,204 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,508 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,804 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,024 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,536 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,793 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,240 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,375 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,339 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,407 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,121 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,552 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,663 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,392,045 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,173 |
| World Map Quiz | 0 | - | 4.81 | 65,580 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,891 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,642 |
| Countries by Founding Story | 0 | - | 4.95 | 77,743 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,115 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,993 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,483 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,382 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,350 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,462 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,663 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,650 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,485 |
| Widest Countries East to West | 0 | - | 4.92 | 130,388 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,578 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,177 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,489 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,014 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,922 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,408 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,476 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,881 |
| Countries with Double Letters | 0 | - | 4.96 | 96,936 |
| Countries that End in N | 0 | - | 4.94 | 171,809 |
| Countries with Five Letters | 0 | - | 4.96 | 283,576 |
| Countries with Six Letters | 0 | - | 4.94 | 214,305 |
| Countries with W | 0 | - | 4.96 | 160,846 |
| Countries with Z | 0 | - | 4.98 | 292,278 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,201 |
| Countries That End in U | 0 | - | 4.95 | 121,127 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,000 |
| Countries that End in O | 0 | - | 4.92 | 159,937 |
| Countries that End in R | 0 | - | 4.87 | 119,142 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,898 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,724 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,076 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,767 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,701 |
| Countries That End in Y | 0 | - | 4.91 | 186,058 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,379 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,202 |
| Countries that End in I | 0 | - | 4.94 | 135,279 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,539 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,017 |
| Countries That End in NIA | 0 | - | 4.92 | 110,010 |
| Countries That End in BIA | 0 | - | 4.93 | 149,530 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,458 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,721 |
| Countries That End in RIA | 0 | - | 4.93 | 127,021 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,326 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,432 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,091 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,533 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,107 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,771 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,281 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,524 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,842 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,616 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,648 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,342 |
| Countries that End in L | 0 | - | 4.94 | 157,076 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,752 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,333 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,325 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,870 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,391 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,328 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,076 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,391 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,191 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,894 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,160 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,219 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,805 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,195 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,453,112 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,227 |
| One Border Countries | 0 | - | 4.98 | 471,648 |
| Top Producing Countries | 0 | - | 4.63 | 116,393 |
| ISO Country Codes | 0 | - | 4.49 | 91,600 |
| Countries on the Equator | 0 | - | 4.63 | 141,196 |
| Members of the Arab League | 0 | - | 4.77 | 75,706 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 70,035 |
| Separatist Movements | 0 | - | 4.45 | 46,014 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,521 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,907 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,411 |
| Westernmost Countries | 0 | - | 4.43 | 62,534 |
| Easternmost Countries | 0 | - | 4.74 | 63,059 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,748 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,947 |
| Indochina Countries | 0 | - | 4.74 | 66,324 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,674 |
| Countries With the Most Conflict Deaths | 0 | - | 4.62 | 96,792 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 44,025 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,157 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,481 |
| Countries with More Sheep than People | 0 | - | 4.48 | 31,999 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,831 |
| Countries that are the Source of Refugees | 0 | - | 4.78 | 75,412 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,054 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,648 |
| Countries with the Most Turkic People | 0 | - | 4.77 | 45,850 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,734 |
| Flyover Countries | 0 | - | 4.69 | 50,978 |
