| Landlocked Countries | 0 | - | 4.99 | 423,160 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,675,704 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,070 |
| Himalayan Countries | 0 | - | 4.94 | 139,243 |
| Andean Countries | 0 | - | 4.93 | 84,903 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,124 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,268 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,696 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,018 |
| Danube Countries | 0 | - | 4.97 | 72,147 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,206 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,557 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,558 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,073 |
| European Landlocked Countries | 0 | - | 4.99 | 147,293 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,857 |
| Countries with the Most Species | 0 | - | 4.99 | 103,357 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,989 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,652 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,773 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,630 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,379 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,801 |
| Countries in the Alps | 0 | - | 4.87 | 118,383 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,813 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,313 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,765 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,731 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,648 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,050 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,834 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,617 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,253 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,974 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,727 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,600 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,337 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,579 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,649 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,198 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,419 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,856 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,267 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,560 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,463 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,322 |
| Largest Countries By Category | 0 | - | 4.97 | 158,425 |
| Countries by Countries | 0 | - | 4.96 | 63,371 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,871 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,329 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,595 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,810 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,786,963 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,636 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,879 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,089 |
| Island Countries | 0 | - | 4.99 | 711,470 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,377 |
| Northernmost Countries | 0 | - | 4.99 | 362,567 |
| Countries of South America | 0 | - | 5.00 | 928,999 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,955 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,881,000 |
| "Land" Countries | 0 | - | 4.98 | 337,672 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,254 |
| Countries with Megacities | 0 | - | 4.99 | 265,413 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,082 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,661 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,317 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,730 |
| Countries by Official Language | 0 | - | 4.95 | 195,496 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,719 |
| Countries in their Native Language | 0 | - | 4.99 | 199,279 |
| Independence from Whom | 0 | - | 4.99 | 212,365 |
| Subdivisions by Country | 0 | - | 4.87 | 50,490 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,936 |
| Megadiverse Countries | 0 | - | 4.96 | 135,104 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,302 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,423 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,301 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,144 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,286 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,666 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,633 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,424 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,714 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,187 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,940 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,963 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,281 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,018 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,439 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,557 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,386,636 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,582 |
| World Map Quiz | 0 | - | 4.81 | 65,267 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,881 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,464 |
| Countries by Founding Story | 0 | - | 4.95 | 77,464 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,337 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,426 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,137 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,629 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,031 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,142 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,409 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,504 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,662 |
| Widest Countries East to West | 0 | - | 4.92 | 129,761 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,483 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,632 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,395 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,856 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,717 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,987 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,422 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,822 |
| Countries with Double Letters | 0 | - | 4.96 | 96,511 |
| Countries that End in N | 0 | - | 4.95 | 171,410 |
| Countries with Five Letters | 0 | - | 4.96 | 282,963 |
| Countries with Six Letters | 0 | - | 4.94 | 213,837 |
| Countries with W | 0 | - | 4.96 | 160,535 |
| Countries with Z | 0 | - | 4.98 | 291,760 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,884 |
| Countries That End in U | 0 | - | 4.95 | 120,957 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,655 |
| Countries that End in O | 0 | - | 4.92 | 159,607 |
| Countries that End in R | 0 | - | 4.87 | 119,034 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,797 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,340 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,842 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,590 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,504 |
| Countries That End in Y | 0 | - | 4.91 | 185,950 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,076 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,003 |
| Countries that End in I | 0 | - | 4.94 | 135,173 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,264 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,888 |
| Countries That End in NIA | 0 | - | 4.92 | 109,862 |
| Countries That End in BIA | 0 | - | 4.93 | 149,320 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,235 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,538 |
| Countries That End in RIA | 0 | - | 4.93 | 126,895 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,135 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,923 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,861 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,294 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,848 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,647 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,130 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,471 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,636 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,506 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,429 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,122 |
| Countries that End in L | 0 | - | 4.94 | 156,932 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,339 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,292 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,105 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,033 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,080 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,958 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,824 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,242 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,966 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,623 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,978 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,143 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,739 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,056 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,450,121 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,435 |
| One Border Countries | 0 | - | 4.98 | 470,547 |
| Top Producing Countries | 0 | - | 4.63 | 116,310 |
| ISO Country Codes | 0 | - | 4.49 | 91,464 |
| Countries on the Equator | 0 | - | 4.63 | 141,069 |
| Members of the Arab League | 0 | - | 4.77 | 75,664 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,973 |
| Separatist Movements | 0 | - | 4.45 | 45,942 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,370 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,858 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,328 |
| Westernmost Countries | 0 | - | 4.43 | 62,486 |
| Easternmost Countries | 0 | - | 4.74 | 63,017 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,708 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,786 |
| Indochina Countries | 0 | - | 4.74 | 66,260 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,659 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,411 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,996 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,132 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,443 |
| Countries with More Sheep than People | 0 | - | 4.48 | 31,686 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,763 |
| Countries that are the Source of Refugees | 0 | - | 4.78 | 74,233 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,006 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,534 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,773 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,662 |
| Flyover Countries | 0 | - | 4.69 | 50,903 |
