| Landlocked Countries | 0 | - | 4.99 | 423,733 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,724,186 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,308 |
| Himalayan Countries | 0 | - | 4.94 | 139,484 |
| Andean Countries | 0 | - | 4.94 | 85,029 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,233 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,422 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,790 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,101 |
| Danube Countries | 0 | - | 4.97 | 72,203 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,291 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,617 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,696 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,196 |
| European Landlocked Countries | 0 | - | 4.99 | 147,361 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,966 |
| Countries with the Most Species | 0 | - | 4.99 | 103,411 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,099 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,679 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,790 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,681 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,431 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,844 |
| Countries in the Alps | 0 | - | 4.87 | 118,477 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,044 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,428 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,805 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,804 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,729 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,093 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,907 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,663 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,290 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,013 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,757 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,624 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,380 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,633 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,716 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,354 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,472 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,181 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,347 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,871 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,637 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,374 |
| Largest Countries By Category | 0 | - | 4.97 | 158,531 |
| Countries by Countries | 0 | - | 4.96 | 63,433 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,996 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,345 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,618 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,893 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,791,418 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,141 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,074 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,476 |
| Island Countries | 0 | - | 4.99 | 711,721 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,293 |
| Northernmost Countries | 0 | - | 4.99 | 362,995 |
| Countries of South America | 0 | - | 5.00 | 929,864 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,083 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,882,954 |
| "Land" Countries | 0 | - | 4.98 | 337,848 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,421 |
| Countries with Megacities | 0 | - | 4.99 | 265,800 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,216 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,745 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,475 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,830 |
| Countries by Official Language | 0 | - | 4.95 | 195,617 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,978 |
| Countries in their Native Language | 0 | - | 4.99 | 199,390 |
| Independence from Whom | 0 | - | 4.99 | 212,536 |
| Subdivisions by Country | 0 | - | 4.87 | 50,524 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,059 |
| Megadiverse Countries | 0 | - | 4.96 | 135,152 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,420 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,454 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,337 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,160 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,366 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,694 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,720 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,465 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,744 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,206 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,078 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,130 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,322 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,054 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,470 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,595 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,388,246 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,781 |
| World Map Quiz | 0 | - | 4.81 | 65,370 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,223 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,526 |
| Countries by Founding Story | 0 | - | 4.95 | 77,524 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,623 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,648 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,307 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,927 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,176 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,299 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,512 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,574 |
| Tallest Countries North to South | 0 | - | 4.85 | 128,372 |
| Widest Countries East to West | 0 | - | 4.92 | 130,151 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,523 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,007 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,438 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,921 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,797 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,071 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,445 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,848 |
| Countries with Double Letters | 0 | - | 4.96 | 96,653 |
| Countries that End in N | 0 | - | 4.95 | 171,543 |
| Countries with Five Letters | 0 | - | 4.96 | 283,169 |
| Countries with Six Letters | 0 | - | 4.94 | 213,999 |
| Countries with W | 0 | - | 4.96 | 160,621 |
| Countries with Z | 0 | - | 4.98 | 291,934 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,992 |
| Countries That End in U | 0 | - | 4.95 | 121,010 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,778 |
| Countries that End in O | 0 | - | 4.92 | 159,662 |
| Countries that End in R | 0 | - | 4.87 | 119,065 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,826 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,455 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,928 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,645 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,566 |
| Countries That End in Y | 0 | - | 4.91 | 185,993 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,183 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,067 |
| Countries that End in I | 0 | - | 4.94 | 135,210 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,364 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,929 |
| Countries That End in NIA | 0 | - | 4.92 | 109,914 |
| Countries That End in BIA | 0 | - | 4.93 | 149,392 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,328 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,604 |
| Countries That End in RIA | 0 | - | 4.93 | 126,936 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,208 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,071 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,944 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,387 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,919 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,684 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,180 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,488 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,710 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,541 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,505 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,193 |
| Countries that End in L | 0 | - | 4.94 | 156,986 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,665 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,304 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,148 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,079 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,125 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,087 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,908 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,293 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,044 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,713 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,042 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,171 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,757 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,114 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,081 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,677 |
| One Border Countries | 0 | - | 4.98 | 470,902 |
| Top Producing Countries | 0 | - | 4.63 | 116,343 |
| ISO Country Codes | 0 | - | 4.49 | 91,512 |
| Countries on the Equator | 0 | - | 4.63 | 141,111 |
| Members of the Arab League | 0 | - | 4.77 | 75,676 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,993 |
| Separatist Movements | 0 | - | 4.45 | 45,964 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,419 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,875 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,353 |
| Westernmost Countries | 0 | - | 4.43 | 62,504 |
| Easternmost Countries | 0 | - | 4.74 | 63,028 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,717 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,839 |
| Indochina Countries | 0 | - | 4.74 | 66,276 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,666 |
| Countries With the Most Conflict Deaths | 0 | - | 4.62 | 96,425 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 44,012 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,139 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,453 |
| Countries with More Sheep than People | 0 | - | 4.48 | 31,851 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,786 |
| Countries that are the Source of Refugees | 0 | - | 4.78 | 74,754 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,019 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,579 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,794 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,689 |
| Flyover Countries | 0 | - | 4.69 | 50,923 |
