| Landlocked Countries Quiz | 0 | - | 4.99 | 325,016 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,033,588 |
| Members of the Arab League | 0 | - | 4.86 | 62,551 |
| Sahara Desert Countries | 0 | - | 4.97 | 127,355 |
| Himalayan Countries | 0 | - | 4.94 | 105,193 |
| Andean Countries | 0 | - | 4.91 | 58,386 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 59,338 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,509 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,860 |
| Coffee Producing Countries | 0 | - | 4.81 | 54,142 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,378 |
| Danube Countries | 0 | - | 4.97 | 56,710 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,746 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,891 |
| Countries with the Best Passports | 0 | - | 4.88 | 71,372 |
| Countries with the Worst Passports | 0 | - | 4.88 | 49,463 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 109,655 |
| European Landlocked Countries | 0 | - | 4.99 | 115,574 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,467 |
| Countries with the Most Species | 0 | - | 4.99 | 89,549 |
| Countries 197 to 205 | 0 | - | 4.89 | 56,444 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,712 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,031 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,358 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,451 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,736 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,223 |
| Countries in the Alps | 0 | - | 4.84 | 102,775 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,430 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 87,383 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,649 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,354 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,060 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,638 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,721 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,206 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,355 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,726 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,489 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,640 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,709 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,583 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,044 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,553 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 98,287 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,402 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,454 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 196,846 |
| World Countries - Blind Typing | 0 | - | 5.00 | 73,122 |
| Countries in Their Own Alphabet | 0 | - | 4.94 | 42,337 |
| Largest Countries By Category | 0 | - | 4.96 | 145,064 |
| Countries by Countries | 0 | - | 4.96 | 54,729 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,752 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,347 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,082,427 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 341,514 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 356,151 |
| Island Countries Quiz | 0 | - | 4.99 | 661,413 |
| Biggest Countries by Area | 0 | - | 5.00 | 934,748 |
| Northernmost Countries | 0 | - | 4.99 | 327,860 |
| Countries of South America | 0 | - | 5.00 | 795,380 |
| Countries of Oceania | 0 | - | 5.00 | 895,995 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,162,134 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,577,404 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 126,567 |
| Countries with Megacities | 0 | - | 4.99 | 197,892 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 172,103 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 98,275 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 95,930 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 64,253 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 248,636 |
| Countries by Official Language | 0 | - | 4.96 | 173,047 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 249,657 |
| Countries in their Native Language | 0 | - | 4.98 | 178,561 |
| Independence from Whom | 0 | - | 4.99 | 185,948 |
| Subdivisions by Country | 0 | - | 4.82 | 46,495 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 113,678 |
| Megadiverse Countries | 0 | - | 4.96 | 125,425 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 91,646 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 106,771 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,423 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 131,735 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,212 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 78,097 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,327 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,108 |
| Countries in Relation to Cities #1 | 0 | - | 4.91 | 41,376 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 43,949 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,660 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,081 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,995 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,614 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,345 |
| Countries of the World in Alphabetical Order | 0 | - | 4.99 | 82,653 |
| World Map Quiz | 0 | - | 4.90 | 49,661 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 81,618 |
| Southernmost Countries of the World | 0 | - | 4.99 | 207,127 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 91,096 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 108,237 |
| Countries With the Most Languages | 0 | - | 4.91 | 174,075 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 87,454 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 71,750 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 86,468 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 54,093 |
| Tallest Countries North to South | 0 | - | 4.84 | 110,580 |
| Widest Countries East to West | 0 | - | 4.93 | 119,507 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,857 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,201 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,726 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 85,698 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 119,487 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,312 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 66,503 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.82 | 32,095 |
| Countries with Double Letters | 0 | - | 4.96 | 68,906 |
| Countries that End in N | 0 | - | 4.93 | 133,172 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 230,290 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 187,799 |
| Countries with W | 0 | - | 4.97 | 123,052 |
| Countries with Z | 0 | - | 4.98 | 244,914 |
| Countries with Letters Missing | 0 | - | 4.97 | 167,347 |
| Countries That End in U | 0 | - | 4.95 | 107,794 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 89,861 |
| Countries that End in O | 0 | - | 4.92 | 147,087 |
| Countries that End in R | 0 | - | 4.85 | 96,574 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,349 |
| Countries Ending in "IA" | 0 | - | 4.99 | 171,688 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,993 |
| Countries by Last Two Letters | 0 | - | 4.91 | 116,363 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 129,444 |
| Countries That End in Y | 0 | - | 4.90 | 161,714 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 161,248 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 120,955 |
| Countries that End in I | 0 | - | 4.92 | 114,572 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 149,802 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,400 |
| Countries That End in NIA | 0 | - | 4.93 | 100,973 |
| Countries That End in BIA | 0 | - | 4.91 | 126,256 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 153,429 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,905 |
| Countries That End in RIA | 0 | - | 4.90 | 101,084 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 100,604 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 201,242 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 119,944 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 110,854 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 77,645 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 92,391 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,893 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 42,935 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 40,950 |
| Countries that End in L | 0 | - | 4.95 | 134,416 |
| "Land" Countries | 0 | - | 4.98 | 289,491 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 189,089 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.97 | 65,206 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,456 |
| City to Country Quiz #3 | 0 | - | 4.87 | 100,312 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,744 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 208,266 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 166,840 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 116,634 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 133,292 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 194,208 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 141,043 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,967 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 92,156 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,448 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 56,163 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,313,407 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 350,022 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,070,662 |
| One Border Countries | 0 | - | 4.98 | 410,723 |
| Countries With One Word and Three A's | 0 | - | 4.85 | 30,957 |
| Top-Producing Countries | 0 | - | 4.71 | 100,257 |
| Country Codes Quiz | 0 | - | 4.45 | 77,276 |
| Countries on the Equator | 0 | - | 4.78 | 134,398 |
| Separatist Movements | 0 | - | 4.45 | 42,743 |
| Prime Meridian Countries | 0 | - | 4.64 | 51,935 |
| Next Country Alphabetically | 0 | - | 4.76 | 68,611 |
| Westernmost Countries | 0 | - | 4.50 | 47,559 |
| Easternmost Countries | 0 | - | 4.76 | 60,473 |
| Countries With the Most ISIS Fighters | 0 | - | 4.57 | 37,132 |
| Top 10 Most Famous Island Countries | 0 | - | 4.70 | 98,670 |
| Indochina Countries | 0 | - | 4.72 | 62,880 |
| Atlantic Ocean Island Countries | 0 | - | 4.55 | 63,113 |
| Countries With the Most Conflict Deaths | 0 | - | 4.64 | 90,989 |
| Highest Foreign Aid Recipients | 0 | - | 4.71 | 42,442 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,198 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.76 | 46,001 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 42,793 |
| Countries that are the Source of Refugees | 0 | - | 4.66 | 56,541 |
| Most Populous Countries By Category | 0 | - | 4.64 | 61,507 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 42,128 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.70 | 45,128 |
| Flyover Countries | 0 | - | 4.65 | 47,334 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 66,849 |
| Countries with the Most Coral Reefs | 0 | - | 4.71 | 37,551 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 42,394 |
| Most Recent Countries to Join the United Nations | 0 | - | 4.53 | 31,856 |
| Countries by Total Area of Bordering Countries | 0 | - | 4.79 | 49,577 |
| Countries with the Most Light Pollution | 0 | - | 4.54 | 44,368 |
