| Landlocked Countries | 0 | - | 4.99 | 423,457 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,702,172 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,196 |
| Himalayan Countries | 0 | - | 4.94 | 139,384 |
| Andean Countries | 0 | - | 4.94 | 84,968 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,179 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,349 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,746 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,059 |
| Danube Countries | 0 | - | 4.97 | 72,175 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,256 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,576 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,628 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,133 |
| European Landlocked Countries | 0 | - | 4.99 | 147,327 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,910 |
| Countries with the Most Species | 0 | - | 4.99 | 103,387 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,049 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,665 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,777 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,652 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,409 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,811 |
| Countries in the Alps | 0 | - | 4.87 | 118,438 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,939 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,378 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,787 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,771 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,689 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,075 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,869 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,639 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,278 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,994 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,745 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,613 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,358 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,607 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,681 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,275 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,442 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,036 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,302 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,739 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,550 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,349 |
| Largest Countries By Category | 0 | - | 4.97 | 158,491 |
| Countries by Countries | 0 | - | 4.96 | 63,409 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,940 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,338 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,604 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,847 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,789,310 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,895 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,990 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,299 |
| Island Countries | 0 | - | 4.99 | 711,608 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,870 |
| Northernmost Countries | 0 | - | 4.99 | 362,781 |
| Countries of South America | 0 | - | 5.00 | 929,456 |
| Countries of Oceania | 0 | - | 5.00 | 1,059,548 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,882,085 |
| "Land" Countries | 0 | - | 4.98 | 337,769 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,356 |
| Countries with Megacities | 0 | - | 4.99 | 265,628 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,144 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,705 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,408 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,781 |
| Countries by Official Language | 0 | - | 4.95 | 195,558 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,819 |
| Countries in their Native Language | 0 | - | 4.99 | 199,337 |
| Independence from Whom | 0 | - | 4.99 | 212,461 |
| Subdivisions by Country | 0 | - | 4.87 | 50,513 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,997 |
| Megadiverse Countries | 0 | - | 4.96 | 135,131 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,361 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,441 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,323 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,154 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,326 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,678 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,677 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,447 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,730 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,197 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,005 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,988 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,300 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,040 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,460 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,581 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,387,559 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,696 |
| World Map Quiz | 0 | - | 4.81 | 65,311 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,051 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,502 |
| Countries by Founding Story | 0 | - | 4.95 | 77,498 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,469 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,524 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,218 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,786 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,114 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,240 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,464 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,537 |
| Tallest Countries North to South | 0 | - | 4.83 | 124,687 |
| Widest Countries East to West | 0 | - | 4.92 | 129,952 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,497 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,961 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,417 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,881 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,760 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,031 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,434 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,834 |
| Countries with Double Letters | 0 | - | 4.96 | 96,581 |
| Countries that End in N | 0 | - | 4.95 | 171,480 |
| Countries with Five Letters | 0 | - | 4.96 | 283,063 |
| Countries with Six Letters | 0 | - | 4.94 | 213,933 |
| Countries with W | 0 | - | 4.96 | 160,572 |
| Countries with Z | 0 | - | 4.98 | 291,849 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,947 |
| Countries That End in U | 0 | - | 4.95 | 120,984 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,729 |
| Countries that End in O | 0 | - | 4.92 | 159,641 |
| Countries that End in R | 0 | - | 4.87 | 119,053 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,809 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,408 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,880 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,619 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,530 |
| Countries That End in Y | 0 | - | 4.91 | 185,970 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,135 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,035 |
| Countries that End in I | 0 | - | 4.94 | 135,195 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,312 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,910 |
| Countries That End in NIA | 0 | - | 4.92 | 109,879 |
| Countries That End in BIA | 0 | - | 4.93 | 149,357 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,286 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,571 |
| Countries That End in RIA | 0 | - | 4.93 | 126,916 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,169 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,990 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,909 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,341 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,891 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,660 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,158 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,479 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,671 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,529 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,467 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,162 |
| Countries that End in L | 0 | - | 4.94 | 156,965 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,498 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,301 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,130 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,055 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,105 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,032 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,870 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,275 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,016 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,672 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,020 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,160 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,748 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,085 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,450,652 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,563 |
| One Border Countries | 0 | - | 4.98 | 470,741 |
| Top Producing Countries | 0 | - | 4.63 | 116,329 |
| ISO Country Codes | 0 | - | 4.49 | 91,488 |
| Countries on the Equator | 0 | - | 4.63 | 141,089 |
| Members of the Arab League | 0 | - | 4.77 | 75,671 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,986 |
| Separatist Movements | 0 | - | 4.45 | 45,956 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,399 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,868 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,344 |
| Westernmost Countries | 0 | - | 4.43 | 62,495 |
| Easternmost Countries | 0 | - | 4.74 | 63,022 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,716 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,818 |
| Indochina Countries | 0 | - | 4.74 | 66,269 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,664 |
| Countries With the Most Conflict Deaths | 0 | - | 4.62 | 96,422 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 44,006 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,135 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,447 |
| Countries with More Sheep than People | 0 | - | 4.48 | 31,777 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,773 |
| Countries that are the Source of Refugees | 0 | - | 4.78 | 74,553 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,011 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,556 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,780 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,681 |
| Flyover Countries | 0 | - | 4.69 | 50,914 |
