| Landlocked Countries | 0 | - | 4.99 | 425,018 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,828,029 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,884 |
| Himalayan Countries | 0 | - | 4.93 | 139,960 |
| Andean Countries | 0 | - | 4.94 | 85,285 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,441 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,788 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,015 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,311 |
| Danube Countries | 0 | - | 4.97 | 72,311 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,472 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,751 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,968 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,459 |
| European Landlocked Countries | 0 | - | 4.99 | 147,525 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,177 |
| Countries with the Most Species | 0 | - | 4.99 | 103,517 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,309 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,738 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,849 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,785 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,518 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,950 |
| Countries in the Alps | 0 | - | 4.87 | 118,677 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,467 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,720 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,913 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,954 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,873 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,183 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,310 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,807 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,367 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,111 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,818 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,689 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,494 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,728 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,824 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,662 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,558 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,680 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,571 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,416 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,976 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,469 |
| Largest Countries By Category | 0 | - | 4.97 | 158,751 |
| Countries by Countries | 0 | - | 4.96 | 63,575 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,180 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,378 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,653 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,033 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,799,950 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,880 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,476 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,315 |
| Island Countries | 0 | - | 4.99 | 712,292 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,976 |
| Northernmost Countries | 0 | - | 4.99 | 363,681 |
| Countries of South America | 0 | - | 5.00 | 931,693 |
| Countries of Oceania | 0 | - | 5.00 | 1,062,165 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,887,071 |
| "Land" Countries | 0 | - | 4.98 | 338,232 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,976 |
| Countries with Megacities | 0 | - | 4.99 | 266,762 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,665 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,013 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,979 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,135 |
| Countries by Official Language | 0 | - | 4.95 | 195,872 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,468 |
| Countries in their Native Language | 0 | - | 4.99 | 199,638 |
| Independence from Whom | 0 | - | 4.99 | 212,913 |
| Subdivisions by Country | 0 | - | 4.87 | 50,589 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,336 |
| Megadiverse Countries | 0 | - | 4.96 | 135,229 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,850 |
| 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 | 75,206 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,511 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,805 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,028 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,537 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,794 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,241 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,386 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,341 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,408 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,122 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,553 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,663 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,392,104 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,181 |
| World Map Quiz | 0 | - | 4.81 | 65,583 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,901 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,648 |
| Countries by Founding Story | 0 | - | 4.95 | 77,744 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,121 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,994 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,484 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,387 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,353 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,463 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,664 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,651 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,495 |
| Widest Countries East to West | 0 | - | 4.92 | 130,390 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,580 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,179 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,491 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,015 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,925 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,411 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,477 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,881 |
| Countries with Double Letters | 0 | - | 4.96 | 96,941 |
| Countries that End in N | 0 | - | 4.94 | 171,811 |
| Countries with Five Letters | 0 | - | 4.96 | 283,581 |
| Countries with Six Letters | 0 | - | 4.94 | 214,309 |
| Countries with W | 0 | - | 4.96 | 160,849 |
| Countries with Z | 0 | - | 4.98 | 292,290 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,203 |
| Countries That End in U | 0 | - | 4.95 | 121,131 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,004 |
| Countries that End in O | 0 | - | 4.92 | 159,974 |
| Countries that End in R | 0 | - | 4.87 | 119,143 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,899 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,726 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,081 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,768 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,703 |
| Countries That End in Y | 0 | - | 4.91 | 186,058 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,382 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,205 |
| Countries that End in I | 0 | - | 4.94 | 135,279 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,543 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,019 |
| Countries That End in NIA | 0 | - | 4.92 | 110,013 |
| Countries That End in BIA | 0 | - | 4.93 | 149,532 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,461 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,723 |
| Countries That End in RIA | 0 | - | 4.93 | 127,023 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,330 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,441 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,095 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,538 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,110 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,773 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,288 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,524 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,844 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,616 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,652 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,346 |
| Countries that End in L | 0 | - | 4.94 | 157,077 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,763 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,333 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,331 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,874 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,392 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,332 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,078 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,392 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,193 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,896 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,162 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,220 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,808 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,195 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,453,148 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,237 |
| One Border Countries | 0 | - | 4.98 | 471,656 |
| Top Producing Countries | 0 | - | 4.63 | 116,393 |
| ISO Country Codes | 0 | - | 4.49 | 91,601 |
| Countries on the Equator | 0 | - | 4.63 | 141,198 |
| Members of the Arab League | 0 | - | 4.77 | 75,706 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 70,036 |
| Separatist Movements | 0 | - | 4.45 | 46,018 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,522 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,907 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,411 |
| Westernmost Countries | 0 | - | 4.43 | 62,535 |
| Easternmost Countries | 0 | - | 4.74 | 63,059 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,749 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,950 |
| Indochina Countries | 0 | - | 4.74 | 66,325 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,674 |
| Countries With the Most Conflict Deaths | 0 | - | 4.62 | 96,793 |
| 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 | 32,003 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,832 |
| Countries that are the Source of Refugees | 0 | - | 4.78 | 75,417 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,055 |
| 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 | 61,735 |
| Flyover Countries | 0 | - | 4.69 | 50,978 |
