| Landlocked Countries Quiz | 0 | - | 4.99 | 330,827 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,460,158 |
| Members of the Arab League | 0 | - | 4.85 | 64,937 |
| Sahara Desert Countries | 0 | - | 4.97 | 129,171 |
| Himalayan Countries | 0 | - | 4.94 | 107,150 |
| Andean Countries | 0 | - | 4.91 | 59,608 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 60,676 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,393 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 103,774 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,612 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,922 |
| Danube Countries | 0 | - | 4.96 | 57,038 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,052 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,142 |
| Countries with the Best Passports | 0 | - | 4.87 | 72,189 |
| Countries with the Worst Passports | 0 | - | 4.88 | 50,043 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 110,337 |
| European Landlocked Countries | 0 | - | 4.99 | 136,685 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,452 |
| Countries with the Most Species | 0 | - | 4.99 | 89,743 |
| Countries 197 to 205 | 0 | - | 4.87 | 56,957 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,907 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,206 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,776 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,714 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,978 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,626 |
| Countries in the Alps | 0 | - | 4.84 | 103,431 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,051 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 88,612 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,028 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,097 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,585 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,070 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,217 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,553 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,568 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,152 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,911 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,863 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,902 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,270 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,418 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,004 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 99,656 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,732 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 53,813 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 200,075 |
| World Countries - Blind Typing | 0 | - | 5.00 | 74,405 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,642 |
| Largest Countries By Category | 0 | - | 4.97 | 145,917 |
| Countries by Countries | 0 | - | 4.96 | 55,255 |
| Country Flags with the Most White | 0 | - | 4.90 | 125,581 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,038 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,089 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,135,147 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,201,356 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 343,420 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 359,931 |
| Island Countries Quiz | 0 | - | 4.99 | 665,694 |
| Biggest Countries by Area | 0 | - | 5.00 | 941,966 |
| Northernmost Countries | 0 | - | 4.99 | 329,706 |
| Countries of South America | 0 | - | 5.00 | 803,931 |
| Countries of Oceania | 0 | - | 5.00 | 906,143 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,597,001 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 127,937 |
| Countries with Megacities | 0 | - | 4.99 | 200,258 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,800 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,180 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 97,299 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,170 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 251,137 |
| Countries by Official Language | 0 | - | 4.96 | 174,420 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 251,656 |
| Countries in their Native Language | 0 | - | 4.98 | 179,572 |
| Independence from Whom | 0 | - | 4.99 | 187,892 |
| Subdivisions by Country | 0 | - | 4.82 | 46,737 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,818 |
| Megadiverse Countries | 0 | - | 4.96 | 126,255 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 92,723 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,240 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,675 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 132,505 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,593 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,000 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,762 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,458 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,710 |
| Countries by Sports League Revenue | 0 | - | 4.89 | 44,606 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,019 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,665 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,195 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,100 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,732 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 84,813 |
| World Map Quiz | 0 | - | 4.91 | 50,681 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 116,641 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 82,278 |
| Southernmost Countries of the World | 0 | - | 4.99 | 208,818 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,074 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 109,306 |
| Countries With the Most Languages | 0 | - | 4.91 | 176,145 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,226 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 72,576 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 87,660 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 54,694 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,168 |
| Widest Countries East to West | 0 | - | 4.93 | 120,137 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,024 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,970 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,478 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,059 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,253 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,173 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,852 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,675 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,286 |
| Countries with Double Letters | 0 | - | 4.96 | 70,542 |
| Countries that End in N | 0 | - | 4.94 | 134,768 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 232,102 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 189,368 |
| Countries with W | 0 | - | 4.96 | 124,673 |
| Countries with Z | 0 | - | 4.98 | 259,272 |
| Countries with Letters Missing | 0 | - | 4.97 | 168,739 |
| Countries That End in U | 0 | - | 4.95 | 108,659 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 91,342 |
| Countries that End in O | 0 | - | 4.92 | 148,129 |
| Countries that End in R | 0 | - | 4.84 | 97,014 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,783 |
| Countries Ending in "IA" | 0 | - | 4.99 | 173,026 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,107 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,262 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 130,205 |
| Countries That End in Y | 0 | - | 4.90 | 162,101 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 162,264 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 121,890 |
| Countries that End in I | 0 | - | 4.92 | 114,950 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 150,796 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,060 |
| Countries That End in NIA | 0 | - | 4.93 | 101,479 |
| Countries That End in BIA | 0 | - | 4.91 | 126,888 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 154,528 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 110,518 |
| Countries That End in RIA | 0 | - | 4.90 | 101,578 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,249 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 203,299 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 120,928 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 111,998 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 78,594 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,393 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 97,632 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,374 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 41,823 |
| Countries that End in L | 0 | - | 4.95 | 135,382 |
| "Land" Countries | 0 | - | 4.98 | 291,503 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 190,638 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,327 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,944 |
| City to Country Quiz #3 | 0 | - | 4.87 | 100,739 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,247 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 210,064 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 169,234 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,321 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 134,201 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 195,469 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 141,790 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,352 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 102,927 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,936 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,048 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,322,288 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 352,073 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,098,004 |
| One Border Countries | 0 | - | 4.98 | 413,297 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,498 |
| Top-Producing Countries | 0 | - | 4.71 | 100,581 |
| Country Codes Quiz | 0 | - | 4.46 | 77,867 |
| Countries on the Equator | 0 | - | 4.78 | 134,899 |
| Separatist Movements | 0 | - | 4.45 | 42,994 |
| Prime Meridian Countries | 0 | - | 4.63 | 52,060 |
| Next Country Alphabetically | 0 | - | 4.72 | 80,435 |
| Westernmost Countries | 0 | - | 4.50 | 47,765 |
| Easternmost Countries | 0 | - | 4.76 | 60,681 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 37,376 |
| Top 10 Most Famous Island Countries | 0 | - | 4.71 | 99,831 |
| Indochina Countries | 0 | - | 4.72 | 63,133 |
| Atlantic Ocean Island Countries | 0 | - | 4.54 | 63,264 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 91,645 |
| Highest Foreign Aid Recipients | 0 | - | 4.70 | 42,612 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,353 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.76 | 46,186 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 43,089 |
| Countries that are the Source of Refugees | 0 | - | 4.69 | 56,873 |
| Most Populous Countries By Category | 0 | - | 4.63 | 61,864 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 42,418 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.66 | 45,462 |
| Flyover Countries | 0 | - | 4.65 | 47,699 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 67,359 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 37,781 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 42,822 |
