| Landlocked Countries Quiz | 0 | - | 4.99 | 323,560 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,908,316 |
| Members of the Arab League | 0 | - | 4.85 | 61,808 |
| Sahara Desert Countries | 0 | - | 4.97 | 126,844 |
| Himalayan Countries | 0 | - | 4.94 | 104,704 |
| Andean Countries | 0 | - | 4.91 | 58,050 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 58,993 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,297 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,649 |
| Coffee Producing Countries | 0 | - | 4.81 | 54,019 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,267 |
| Danube Countries | 0 | - | 4.97 | 56,623 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,659 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,822 |
| Countries with the Best Passports | 0 | - | 4.88 | 71,145 |
| Countries with the Worst Passports | 0 | - | 4.87 | 49,320 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 109,478 |
| European Landlocked Countries | 0 | - | 4.99 | 115,480 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,302 |
| Countries with the Most Species | 0 | - | 4.99 | 89,519 |
| Countries 197 to 205 | 0 | - | 4.88 | 56,319 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,665 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,992 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,232 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,397 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,671 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,101 |
| Countries in the Alps | 0 | - | 4.84 | 102,584 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,265 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 87,022 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,551 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,208 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,914 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,515 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,584 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,117 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,293 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,618 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,389 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,570 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,649 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,440 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,920 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,427 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 97,929 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,304 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,353 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 196,009 |
| World Countries - Blind Typing | 0 | - | 5.00 | 72,771 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,257 |
| Largest Countries By Category | 0 | - | 4.96 | 144,819 |
| Countries by Countries | 0 | - | 4.96 | 54,606 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,672 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,140 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,069,300 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 340,997 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 355,334 |
| Island Countries Quiz | 0 | - | 4.99 | 660,337 |
| Biggest Countries by Area | 0 | - | 5.00 | 932,676 |
| Northernmost Countries | 0 | - | 4.99 | 327,045 |
| Countries of South America | 0 | - | 5.00 | 792,749 |
| Countries of Oceania | 0 | - | 5.00 | 893,077 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,149,924 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,571,487 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 125,780 |
| Countries with Megacities | 0 | - | 4.99 | 197,052 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,408 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 97,858 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 95,265 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 63,826 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 247,756 |
| Countries by Official Language | 0 | - | 4.96 | 171,756 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 249,134 |
| Countries in their Native Language | 0 | - | 4.98 | 178,238 |
| Independence from Whom | 0 | - | 4.99 | 185,476 |
| Subdivisions by Country | 0 | - | 4.82 | 46,426 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 113,387 |
| Megadiverse Countries | 0 | - | 4.96 | 125,285 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 91,321 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 106,648 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,366 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 131,534 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,117 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,833 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,089 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,021 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,338 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 43,775 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,573 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,972 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,946 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,516 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,242 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 82,111 |
| World Map Quiz | 0 | - | 4.90 | 49,337 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 81,453 |
| Southernmost Countries of the World | 0 | - | 4.99 | 206,670 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,877 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,971 |
| Countries With the Most Languages | 0 | - | 4.90 | 173,529 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 87,285 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 71,561 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 86,254 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,929 |
| Tallest Countries North to South | 0 | - | 4.84 | 110,424 |
| Widest Countries East to West | 0 | - | 4.93 | 119,340 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,814 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 158,959 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,639 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 85,557 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 118,799 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,132 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 66,447 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.82 | 32,042 |
| Countries with Double Letters | 0 | - | 4.96 | 68,347 |
| Countries that End in N | 0 | - | 4.94 | 132,686 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 229,711 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 187,014 |
| Countries with W | 0 | - | 4.96 | 122,698 |
| Countries with Z | 0 | - | 4.98 | 244,381 |
| Countries with Letters Missing | 0 | - | 4.97 | 164,401 |
| Countries That End in U | 0 | - | 4.95 | 107,555 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 89,471 |
| Countries that End in O | 0 | - | 4.92 | 146,923 |
| Countries that End in R | 0 | - | 4.85 | 96,471 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,226 |
| Countries Ending in "IA" | 0 | - | 4.99 | 171,321 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,747 |
| Countries by Last Two Letters | 0 | - | 4.91 | 116,213 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 129,277 |
| Countries That End in Y | 0 | - | 4.90 | 161,626 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 160,969 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 120,743 |
| Countries that End in I | 0 | - | 4.92 | 114,496 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 149,526 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,264 |
| Countries That End in NIA | 0 | - | 4.93 | 100,831 |
| Countries That End in BIA | 0 | - | 4.91 | 126,070 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 153,235 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,740 |
| Countries That End in RIA | 0 | - | 4.90 | 100,950 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 100,433 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 200,706 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 119,663 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 110,560 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 77,367 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 92,225 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,708 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 42,816 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 40,713 |
| Countries that End in L | 0 | - | 4.95 | 134,266 |
| "Land" Countries | 0 | - | 4.98 | 289,182 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 188,814 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.97 | 65,177 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,272 |
| City to Country Quiz #3 | 0 | - | 4.87 | 100,178 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,601 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 207,849 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 166,209 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 116,457 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 133,044 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 193,853 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,850 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,884 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 92,057 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,300 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 56,040 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,311,106 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 349,564 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,063,137 |
| One Border Countries | 0 | - | 4.98 | 410,030 |
| Countries With One Word and Three A's | 0 | - | 4.85 | 30,814 |
| Top-Producing Countries | 0 | - | 4.71 | 100,177 |
| Country Codes Quiz | 0 | - | 4.45 | 77,184 |
| Countries on the Equator | 0 | - | 4.78 | 134,272 |
| Separatist Movements | 0 | - | 4.45 | 42,665 |
| Prime Meridian Countries | 0 | - | 4.64 | 51,891 |
| Next Country Alphabetically | 0 | - | 4.76 | 68,539 |
| Westernmost Countries | 0 | - | 4.50 | 47,504 |
| Easternmost Countries | 0 | - | 4.76 | 60,427 |
| Countries With the Most ISIS Fighters | 0 | - | 4.56 | 37,069 |
| Top 10 Most Famous Island Countries | 0 | - | 4.70 | 98,480 |
| Indochina Countries | 0 | - | 4.72 | 62,811 |
| Atlantic Ocean Island Countries | 0 | - | 4.55 | 63,070 |
| Countries With the Most Conflict Deaths | 0 | - | 4.64 | 90,876 |
| Highest Foreign Aid Recipients | 0 | - | 4.58 | 42,401 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,141 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.76 | 45,951 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 42,709 |
| Countries that are the Source of Refugees | 0 | - | 4.66 | 56,455 |
| Most Populous Countries By Category | 0 | - | 4.64 | 61,407 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 42,031 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.70 | 45,030 |
| Flyover Countries | 0 | - | 4.66 | 47,056 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 66,705 |
| Countries with the Most Coral Reefs | 0 | - | 4.66 | 37,502 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 42,266 |
| Most Recent Countries to Join the United Nations | 0 | - | 4.53 | 31,828 |
| Countries by Total Area of Bordering Countries | 0 | - | 4.79 | 49,483 |
| Countries with the Most Light Pollution | 0 | - | 4.54 | 44,279 |
