| Landlocked Countries | 0 | - | 4.99 | 418,729 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,321,283 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,906 |
| Himalayan Countries | 0 | - | 4.94 | 137,343 |
| Andean Countries | 0 | - | 4.95 | 83,887 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,184 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,586 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,798 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,318 |
| Danube Countries | 0 | - | 4.97 | 71,631 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,515 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,033 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,604 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,682 |
| European Landlocked Countries | 0 | - | 4.99 | 146,748 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,100 |
| Countries with the Most Species | 0 | - | 4.99 | 102,885 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,237 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,426 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,581 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,289 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,969 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,345 |
| Countries in the Alps | 0 | - | 4.87 | 117,652 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,109 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,325 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,394 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,960 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,069 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,430 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,253 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,169 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,951 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,533 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,466 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,329 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,907 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,175 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,192 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,139 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,051 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,560 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,494 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,279 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,172 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,983 |
| Largest Countries By Category | 0 | - | 4.97 | 157,605 |
| Countries by Countries | 0 | - | 4.96 | 62,819 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,176 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,153 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,465 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,304 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,755,600 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,801 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,550 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,990 |
| Island Countries | 0 | - | 4.99 | 709,664 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,843 |
| Northernmost Countries | 0 | - | 4.99 | 360,382 |
| Countries of South America | 0 | - | 5.00 | 922,648 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,678 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,777 |
| "Land" Countries | 0 | - | 4.98 | 335,750 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,966 |
| Countries with Megacities | 0 | - | 4.99 | 258,414 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,836 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,955 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,119 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,963 |
| Countries by Official Language | 0 | - | 4.95 | 194,604 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,476 |
| Countries in their Native Language | 0 | - | 4.99 | 198,148 |
| Independence from Whom | 0 | - | 4.99 | 211,262 |
| Subdivisions by Country | 0 | - | 4.86 | 50,278 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,667 |
| Megadiverse Countries | 0 | - | 4.96 | 134,753 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,524 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,175 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,739 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,008 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,686 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,364 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,945 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,831 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,471 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,983 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,908 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,702 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,978 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,760 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,137 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,314 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,288 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,138 |
| World Map Quiz | 0 | - | 4.81 | 64,493 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,525 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,014 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,467 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,906 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,620 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,285 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,497 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,658 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,812 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,251 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,268 |
| Widest Countries East to West | 0 | - | 4.92 | 129,349 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,377 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,937 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,986 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,499 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,202 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,527 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,224 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,724 |
| Countries with Double Letters | 0 | - | 4.97 | 95,054 |
| Countries that End in N | 0 | - | 4.95 | 169,927 |
| Countries with Five Letters | 0 | - | 4.96 | 279,964 |
| Countries with Six Letters | 0 | - | 4.94 | 212,438 |
| Countries with W | 0 | - | 4.97 | 159,500 |
| Countries with Z | 0 | - | 4.98 | 289,763 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,705 |
| Countries That End in U | 0 | - | 4.95 | 120,399 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,723 |
| Countries that End in O | 0 | - | 4.92 | 159,186 |
| Countries that End in R | 0 | - | 4.87 | 118,727 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,502 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,292 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,084 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,067 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,653 |
| Countries That End in Y | 0 | - | 4.90 | 185,642 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,198 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,399 |
| Countries that End in I | 0 | - | 4.94 | 134,856 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,047 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,566 |
| Countries That End in NIA | 0 | - | 4.92 | 109,502 |
| Countries That End in BIA | 0 | - | 4.93 | 148,826 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,690 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,034 |
| Countries That End in RIA | 0 | - | 4.93 | 126,520 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,607 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,635 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,198 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,543 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,092 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,305 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,667 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,218 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,104 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,187 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,806 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,514 |
| Countries that End in L | 0 | - | 4.94 | 156,530 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,924 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,152 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,826 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,710 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,756 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,748 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,137 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,593 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,096 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,588 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,567 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,943 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,590 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,647 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,013 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,652 |
| One Border Countries | 0 | - | 4.98 | 467,585 |
| Top Producing Countries | 0 | - | 4.63 | 116,124 |
| ISO Country Codes | 0 | - | 4.45 | 82,347 |
| Countries on the Equator | 0 | - | 4.63 | 140,619 |
| Members of the Arab League | 0 | - | 4.77 | 75,573 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,771 |
| Separatist Movements | 0 | - | 4.44 | 45,809 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,027 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,746 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,139 |
| Westernmost Countries | 0 | - | 4.50 | 57,697 |
| Easternmost Countries | 0 | - | 4.75 | 62,810 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,589 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,387 |
| Indochina Countries | 0 | - | 4.74 | 66,092 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,580 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,237 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,950 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,052 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,320 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,589 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,780 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,855 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,262 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,593 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,455 |
| Flyover Countries | 0 | - | 4.68 | 50,720 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,724 |
| Countries with the Most Coral Reefs | 0 | - | 4.77 | 48,450 |
