| Landlocked Countries | 0 | - | 4.99 | 420,179 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,436,580 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,554 |
| Himalayan Countries | 0 | - | 4.95 | 137,969 |
| Andean Countries | 0 | - | 4.95 | 84,204 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,421 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,129 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,060 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,507 |
| Danube Countries | 0 | - | 4.97 | 71,788 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,731 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,183 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,909 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,148 |
| European Landlocked Countries | 0 | - | 4.99 | 146,926 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,321 |
| Countries with the Most Species | 0 | - | 4.99 | 103,062 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,490 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,484 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,644 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,419 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,098 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,484 |
| Countries in the Alps | 0 | - | 4.87 | 117,916 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 98,611 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,643 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,523 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,418 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,262 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,816 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,436 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,310 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,057 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,676 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,551 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,401 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,037 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,325 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,334 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,470 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,149 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,663 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,764 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,015 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,588 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,079 |
| Largest Countries By Category | 0 | - | 4.97 | 157,869 |
| Countries by Countries | 0 | - | 4.97 | 62,979 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,426 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,201 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,503 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,473 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,765,722 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,048 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,964 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,069 |
| Island Countries | 0 | - | 4.99 | 710,273 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,538 |
| Northernmost Countries | 0 | - | 4.99 | 361,103 |
| Countries of South America | 0 | - | 5.00 | 924,695 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,587 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,870,985 |
| "Land" Countries | 0 | - | 4.98 | 336,122 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,389 |
| Countries with Megacities | 0 | - | 4.99 | 263,088 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,234 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,199 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,524 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,237 |
| Countries by Official Language | 0 | - | 4.95 | 194,883 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,867 |
| Countries in their Native Language | 0 | - | 4.99 | 198,417 |
| Independence from Whom | 0 | - | 4.99 | 211,654 |
| Subdivisions by Country | 0 | - | 4.86 | 50,345 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,937 |
| Megadiverse Countries | 0 | - | 4.96 | 134,853 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,752 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,243 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,829 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,054 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,874 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,462 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,180 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,919 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,553 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,031 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,300 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,783 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,075 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,853 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,239 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,406 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,378,919 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,582 |
| World Map Quiz | 0 | - | 4.81 | 64,814 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,257 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,168 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,736 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,067 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,793 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,703 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,676 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,810 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,947 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,340 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,411 |
| Widest Countries East to West | 0 | - | 4.92 | 129,478 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,412 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,128 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,049 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,620 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,385 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,677 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,301 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,758 |
| Countries with Double Letters | 0 | - | 4.97 | 95,339 |
| Countries that End in N | 0 | - | 4.95 | 170,378 |
| Countries with Five Letters | 0 | - | 4.96 | 281,246 |
| Countries with Six Letters | 0 | - | 4.94 | 212,787 |
| Countries with W | 0 | - | 4.97 | 159,696 |
| Countries with Z | 0 | - | 4.98 | 290,595 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,964 |
| Countries That End in U | 0 | - | 4.95 | 120,510 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,977 |
| Countries that End in O | 0 | - | 4.92 | 159,282 |
| Countries that End in R | 0 | - | 4.87 | 118,801 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,567 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,580 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,309 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,205 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,816 |
| Countries That End in Y | 0 | - | 4.91 | 185,714 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,507 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,588 |
| Countries that End in I | 0 | - | 4.94 | 134,938 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,700 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,659 |
| Countries That End in NIA | 0 | - | 4.92 | 109,614 |
| Countries That End in BIA | 0 | - | 4.93 | 148,969 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,870 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,194 |
| Countries That End in RIA | 0 | - | 4.93 | 126,628 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,764 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,052 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,396 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,789 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,318 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,407 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,785 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,355 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,280 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,282 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,976 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,700 |
| Countries that End in L | 0 | - | 4.94 | 156,647 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,698 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,187 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,908 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,816 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,864 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,191 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,366 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,781 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,304 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,805 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,692 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,010 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,636 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,751 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,288 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,220 |
| One Border Countries | 0 | - | 4.98 | 468,462 |
| Top Producing Countries | 0 | - | 4.63 | 116,180 |
| ISO Country Codes | 0 | - | 4.45 | 86,116 |
| Countries on the Equator | 0 | - | 4.63 | 140,724 |
| Members of the Arab League | 0 | - | 4.77 | 75,608 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,838 |
| Separatist Movements | 0 | - | 4.44 | 45,861 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,139 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,784 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,214 |
| Westernmost Countries | 0 | - | 4.42 | 62,111 |
| Easternmost Countries | 0 | - | 4.75 | 62,862 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,621 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,514 |
| Indochina Countries | 0 | - | 4.74 | 66,132 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,607 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,299 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,964 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,075 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,362 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,644 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,850 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,899 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,368 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,643 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,529 |
| Flyover Countries | 0 | - | 4.69 | 50,771 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,832 |
| Countries with the Most Coral Reefs | 0 | - | 4.77 | 48,504 |
