| Landlocked Countries Quiz | 0 | - | 4.99 | 324,793 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,015,220 |
| Members of the Arab League | 0 | - | 4.86 | 62,437 |
| Sahara Desert Countries | 0 | - | 4.97 | 127,288 |
| Himalayan Countries | 0 | - | 4.94 | 105,126 |
| Andean Countries | 0 | - | 4.91 | 58,345 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 59,298 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,484 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,835 |
| Coffee Producing Countries | 0 | - | 4.81 | 54,122 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,357 |
| Danube Countries | 0 | - | 4.97 | 56,688 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,735 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,873 |
| Countries with the Best Passports | 0 | - | 4.88 | 71,341 |
| Countries with the Worst Passports | 0 | - | 4.88 | 49,440 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 109,635 |
| European Landlocked Countries | 0 | - | 4.99 | 115,555 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,450 |
| Countries with the Most Species | 0 | - | 4.99 | 89,542 |
| Countries 197 to 205 | 0 | - | 4.89 | 56,422 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,702 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,027 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,346 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,445 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,730 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,210 |
| Countries in the Alps | 0 | - | 4.84 | 102,740 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,400 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 87,324 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,641 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,337 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,048 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,620 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,700 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,189 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,344 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,706 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,481 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,635 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,703 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,567 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,030 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,534 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 98,235 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,389 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,438 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 196,703 |
| World Countries - Blind Typing | 0 | - | 5.00 | 73,082 |
| Countries in Their Own Alphabet | 0 | - | 4.94 | 42,322 |
| Largest Countries By Category | 0 | - | 4.96 | 145,021 |
| Countries by Countries | 0 | - | 4.96 | 54,713 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,746 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,329 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,080,543 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 341,441 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 356,046 |
| Island Countries Quiz | 0 | - | 4.99 | 661,247 |
| Biggest Countries by Area | 0 | - | 5.00 | 934,452 |
| Northernmost Countries | 0 | - | 4.99 | 327,799 |
| Countries of South America | 0 | - | 5.00 | 795,030 |
| Countries of Oceania | 0 | - | 5.00 | 895,519 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,160,409 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,576,603 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 126,493 |
| Countries with Megacities | 0 | - | 4.99 | 197,782 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 172,004 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 98,226 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 95,836 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 64,191 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 248,513 |
| Countries by Official Language | 0 | - | 4.96 | 172,964 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 249,589 |
| Countries in their Native Language | 0 | - | 4.98 | 178,518 |
| Independence from Whom | 0 | - | 4.99 | 185,892 |
| Subdivisions by Country | 0 | - | 4.82 | 46,479 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 113,642 |
| Megadiverse Countries | 0 | - | 4.96 | 125,410 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 91,600 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 106,757 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,413 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 131,712 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,200 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 78,051 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,190 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,097 |
| Countries in Relation to Cities #1 | 0 | - | 4.91 | 41,368 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 43,926 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,648 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,069 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,987 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,602 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,332 |
| Countries of the World in Alphabetical Order | 0 | - | 4.99 | 82,581 |
| World Map Quiz | 0 | - | 4.90 | 49,610 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 81,597 |
| Southernmost Countries of the World | 0 | - | 4.99 | 207,070 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 91,076 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 108,206 |
| Countries With the Most Languages | 0 | - | 4.91 | 174,011 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 87,428 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 71,729 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 86,442 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 54,068 |
| Tallest Countries North to South | 0 | - | 4.84 | 110,557 |
| Widest Countries East to West | 0 | - | 4.93 | 119,486 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,854 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,166 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,715 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 85,683 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 119,465 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,290 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 66,496 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,085 |
| Countries with Double Letters | 0 | - | 4.96 | 68,749 |
| Countries that End in N | 0 | - | 4.93 | 133,034 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 230,136 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 187,537 |
| Countries with W | 0 | - | 4.97 | 122,965 |
| Countries with Z | 0 | - | 4.98 | 244,772 |
| Countries with Letters Missing | 0 | - | 4.97 | 167,171 |
| Countries That End in U | 0 | - | 4.95 | 107,708 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 89,760 |
| Countries that End in O | 0 | - | 4.92 | 147,042 |
| Countries that End in R | 0 | - | 4.85 | 96,545 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,327 |
| Countries Ending in "IA" | 0 | - | 4.99 | 171,635 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,957 |
| Countries by Last Two Letters | 0 | - | 4.91 | 116,336 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 129,424 |
| Countries That End in Y | 0 | - | 4.90 | 161,702 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 161,216 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 120,927 |
| Countries that End in I | 0 | - | 4.92 | 114,555 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 149,761 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,379 |
| Countries That End in NIA | 0 | - | 4.93 | 100,946 |
| Countries That End in BIA | 0 | - | 4.91 | 126,227 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 153,398 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,880 |
| Countries That End in RIA | 0 | - | 4.90 | 101,066 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 100,569 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 201,167 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 119,910 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 110,815 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 77,616 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 92,371 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,859 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 42,923 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 40,910 |
| Countries that End in L | 0 | - | 4.95 | 134,396 |
| "Land" Countries | 0 | - | 4.98 | 289,437 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 189,052 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.97 | 65,201 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,403 |
| City to Country Quiz #3 | 0 | - | 4.87 | 100,272 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,710 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 208,198 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 166,744 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 116,606 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 133,251 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 194,153 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 141,013 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,956 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 92,136 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,417 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 56,148 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,313,057 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 349,951 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,069,576 |
| One Border Countries | 0 | - | 4.98 | 410,620 |
| Countries With One Word and Three A's | 0 | - | 4.85 | 30,931 |
| Top-Producing Countries | 0 | - | 4.71 | 100,248 |
| Country Codes Quiz | 0 | - | 4.45 | 77,267 |
| Countries on the Equator | 0 | - | 4.78 | 134,368 |
| Separatist Movements | 0 | - | 4.45 | 42,737 |
| Prime Meridian Countries | 0 | - | 4.64 | 51,930 |
| Next Country Alphabetically | 0 | - | 4.76 | 68,604 |
| Westernmost Countries | 0 | - | 4.50 | 47,553 |
| Easternmost Countries | 0 | - | 4.76 | 60,467 |
| Countries With the Most ISIS Fighters | 0 | - | 4.56 | 37,119 |
| Top 10 Most Famous Island Countries | 0 | - | 4.70 | 98,651 |
| Indochina Countries | 0 | - | 4.72 | 62,867 |
| Atlantic Ocean Island Countries | 0 | - | 4.55 | 63,106 |
| Countries With the Most Conflict Deaths | 0 | - | 4.64 | 90,972 |
| Highest Foreign Aid Recipients | 0 | - | 4.71 | 42,439 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,193 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.76 | 45,992 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 42,784 |
| Countries that are the Source of Refugees | 0 | - | 4.67 | 56,533 |
| Most Populous Countries By Category | 0 | - | 4.64 | 61,497 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 42,122 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.70 | 45,117 |
| Flyover Countries | 0 | - | 4.65 | 47,306 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 66,823 |
| Countries with the Most Coral Reefs | 0 | - | 4.71 | 37,547 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 42,381 |
| Most Recent Countries to Join the United Nations | 0 | - | 4.53 | 31,850 |
| Countries by Total Area of Bordering Countries | 0 | - | 4.79 | 49,566 |
| Countries with the Most Light Pollution | 0 | - | 4.54 | 44,349 |
