| Landlocked Countries | 0 | - | 4.99 | 415,833 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,100,147 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,516 |
| Himalayan Countries | 0 | - | 4.95 | 136,155 |
| Andean Countries | 0 | - | 4.95 | 83,263 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,567 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,757 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,269 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,896 |
| Danube Countries | 0 | - | 4.97 | 71,309 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,079 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,765 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,975 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,928 |
| European Landlocked Countries | 0 | - | 4.99 | 146,019 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,619 |
| Countries with the Most Species | 0 | - | 4.99 | 95,377 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,757 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,290 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,459 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,100 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,748 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,123 |
| Countries in the Alps | 0 | - | 4.86 | 117,206 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,818 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,712 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,196 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,640 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,446 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,189 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,879 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,933 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,738 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,269 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,303 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,170 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,920 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,932 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,568 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,835 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,373 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,105 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,560 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,362 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,767 |
| Largest Countries By Category | 0 | - | 4.97 | 157,135 |
| Countries by Countries | 0 | - | 4.96 | 62,505 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,760 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,051 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,393 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,017 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,734,832 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,239 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,357 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,087 |
| Island Countries | 0 | - | 4.99 | 708,541 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,385 |
| Northernmost Countries | 0 | - | 4.99 | 358,968 |
| Countries of South America | 0 | - | 5.00 | 918,581 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,260 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,856,074 |
| "Land" Countries | 0 | - | 4.98 | 334,234 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,052 |
| Countries with Megacities | 0 | - | 4.99 | 248,518 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,937 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,434 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,317 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,376 |
| Countries by Official Language | 0 | - | 4.95 | 193,643 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,144 |
| Countries in their Native Language | 0 | - | 4.99 | 197,351 |
| Independence from Whom | 0 | - | 4.99 | 210,334 |
| Subdivisions by Country | 0 | - | 4.86 | 50,165 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,178 |
| Megadiverse Countries | 0 | - | 4.96 | 134,494 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,532 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,044 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,580 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,928 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,945 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,161 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,442 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,493 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,321 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,795 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,042 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,545 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,648 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,616 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,820 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,151 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,368,451 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,290 |
| World Map Quiz | 0 | - | 4.81 | 63,909 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,966 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,640 |
| Countries by Founding Story | 0 | - | 4.95 | 76,789 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,900 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,585 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,303 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,489 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,176 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,368 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,558 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,103 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,579 |
| Widest Countries East to West | 0 | - | 4.92 | 129,079 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,304 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,560 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,672 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,905 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,896 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,283 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,930 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,655 |
| Countries with Double Letters | 0 | - | 4.96 | 93,790 |
| Countries that End in N | 0 | - | 4.94 | 157,222 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,175 |
| Countries with Six Letters | 0 | - | 4.93 | 210,813 |
| Countries with W | 0 | - | 4.97 | 158,487 |
| Countries with Z | 0 | - | 4.98 | 288,369 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,838 |
| Countries That End in U | 0 | - | 4.95 | 119,653 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,977 |
| Countries that End in O | 0 | - | 4.92 | 158,689 |
| Countries that End in R | 0 | - | 4.87 | 118,401 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,956 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,524 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,619 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,703 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,267 |
| Countries That End in Y | 0 | - | 4.90 | 185,312 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,708 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,983 |
| Countries that End in I | 0 | - | 4.94 | 134,584 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,573 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,344 |
| Countries That End in NIA | 0 | - | 4.92 | 109,199 |
| Countries That End in BIA | 0 | - | 4.92 | 148,326 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,324 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,692 |
| Countries That End in RIA | 0 | - | 4.93 | 126,245 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,227 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,883 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,752 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,112 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,652 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,063 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,342 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,859 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,750 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,930 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,414 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,080 |
| Countries that End in L | 0 | - | 4.94 | 156,194 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,459 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,034 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,668 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,499 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,563 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,135 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,713 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,065 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,738 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,149 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,984 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,848 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,264 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,483 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,465 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,755 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,558 |
| One Border Countries | 0 | - | 4.98 | 466,020 |
| Top Producing Countries | 0 | - | 4.63 | 115,998 |
| ISO Country Codes | 0 | - | 4.45 | 82,238 |
| Countries on the Equator | 0 | - | 4.63 | 140,441 |
| Members of the Arab League | 0 | - | 4.77 | 75,515 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,652 |
| Separatist Movements | 0 | - | 4.44 | 45,722 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,773 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,687 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,036 |
| Westernmost Countries | 0 | - | 4.50 | 49,459 |
| Easternmost Countries | 0 | - | 4.75 | 62,725 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,527 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,092 |
| Indochina Countries | 0 | - | 4.74 | 66,010 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,551 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,859 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,907 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,000 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,255 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,503 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,669 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,786 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,105 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,483 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,345 |
| Flyover Countries | 0 | - | 4.68 | 50,639 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,542 |
