| Landlocked Countries | 0 | - | 4.99 | 419,228 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,353,814 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,116 |
| Himalayan Countries | 0 | - | 4.95 | 137,537 |
| Andean Countries | 0 | - | 4.95 | 83,994 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,266 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,739 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,887 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,387 |
| Danube Countries | 0 | - | 4.97 | 71,696 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,605 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,087 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,704 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,777 |
| European Landlocked Countries | 0 | - | 4.99 | 146,805 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,170 |
| Countries with the Most Species | 0 | - | 4.99 | 102,943 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,314 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,436 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,598 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,327 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,005 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,389 |
| Countries in the Alps | 0 | - | 4.87 | 117,732 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,166 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,424 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,438 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,025 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,136 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,736 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,311 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,214 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,981 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,579 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,502 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,351 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,952 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,210 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,236 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,246 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,084 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,584 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,561 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,504 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,286 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,015 |
| Largest Countries By Category | 0 | - | 4.97 | 157,683 |
| Countries by Countries | 0 | - | 4.96 | 62,862 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,249 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,170 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,479 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,349 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,758,499 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,229 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,677 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,251 |
| Island Countries | 0 | - | 4.99 | 709,878 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,360 |
| Northernmost Countries | 0 | - | 4.99 | 360,605 |
| Countries of South America | 0 | - | 5.00 | 923,256 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,621 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,867,197 |
| "Land" Countries | 0 | - | 4.98 | 335,859 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,109 |
| Countries with Megacities | 0 | - | 4.99 | 261,210 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,966 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,041 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,243 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,059 |
| Countries by Official Language | 0 | - | 4.95 | 194,684 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,603 |
| Countries in their Native Language | 0 | - | 4.99 | 198,237 |
| Independence from Whom | 0 | - | 4.99 | 211,383 |
| Subdivisions by Country | 0 | - | 4.86 | 50,298 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,762 |
| Megadiverse Countries | 0 | - | 4.96 | 134,788 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,580 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,201 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,765 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,027 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,736 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,398 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,016 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,861 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,502 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,999 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,041 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,730 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,008 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,794 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,168 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,337 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,299 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,269 |
| World Map Quiz | 0 | - | 4.81 | 64,625 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,720 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,061 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,560 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,959 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,675 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,406 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,549 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,703 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,855 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,285 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,309 |
| Widest Countries East to West | 0 | - | 4.92 | 129,397 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,388 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,984 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,001 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,533 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,251 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,575 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,247 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,732 |
| Countries with Double Letters | 0 | - | 4.97 | 95,135 |
| Countries that End in N | 0 | - | 4.95 | 170,078 |
| Countries with Five Letters | 0 | - | 4.96 | 280,497 |
| Countries with Six Letters | 0 | - | 4.94 | 212,538 |
| Countries with W | 0 | - | 4.97 | 159,546 |
| Countries with Z | 0 | - | 4.98 | 289,875 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,791 |
| Countries That End in U | 0 | - | 4.95 | 120,425 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,792 |
| Countries that End in O | 0 | - | 4.92 | 159,216 |
| Countries that End in R | 0 | - | 4.87 | 118,746 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,523 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,384 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,145 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,101 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,692 |
| Countries That End in Y | 0 | - | 4.91 | 185,656 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,270 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,461 |
| Countries that End in I | 0 | - | 4.94 | 134,883 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,123 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,588 |
| Countries That End in NIA | 0 | - | 4.92 | 109,528 |
| Countries That End in BIA | 0 | - | 4.93 | 148,869 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,752 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,086 |
| Countries That End in RIA | 0 | - | 4.93 | 126,558 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,660 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,769 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,272 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,637 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,164 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,343 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,702 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,264 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,159 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,212 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,858 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,568 |
| Countries that End in L | 0 | - | 4.94 | 156,555 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,136 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,159 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,855 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,736 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,794 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,834 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,216 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,660 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,161 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,646 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,603 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,964 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,609 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,686 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,704 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,831 |
| One Border Countries | 0 | - | 4.98 | 467,832 |
| Top Producing Countries | 0 | - | 4.63 | 116,143 |
| ISO Country Codes | 0 | - | 4.45 | 82,362 |
| Countries on the Equator | 0 | - | 4.63 | 140,650 |
| Members of the Arab League | 0 | - | 4.77 | 75,582 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,791 |
| Separatist Movements | 0 | - | 4.44 | 45,821 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,065 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,761 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,163 |
| Westernmost Countries | 0 | - | 4.42 | 60,940 |
| Easternmost Countries | 0 | - | 4.75 | 62,834 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,595 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,435 |
| Indochina Countries | 0 | - | 4.74 | 66,105 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,590 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,257 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,955 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,059 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,331 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,605 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,799 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,865 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,291 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,612 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,477 |
| Flyover Countries | 0 | - | 4.68 | 50,736 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,745 |
| Countries with the Most Coral Reefs | 0 | - | 4.77 | 48,459 |
