| Landlocked Countries Quiz | 0 | - | 4.99 | 402,363 |
| Countries of the World Quiz | 0 | - | 5.00 | 45,964,382 |
| Sahara Desert Countries | 0 | - | 4.97 | 155,383 |
| Himalayan Countries | 0 | - | 4.95 | 130,822 |
| Andean Countries | 0 | - | 4.94 | 80,237 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 60,345 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 119,747 |
| Coffee Producing Countries | 0 | - | 4.81 | 63,785 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 62,839 |
| Danube Countries | 0 | - | 4.97 | 63,201 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 100,082 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 84,164 |
| Countries with the Worst Passports | 0 | - | 4.93 | 79,966 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 144,549 |
| European Landlocked Countries | 0 | - | 4.99 | 144,015 |
| Partially Recognized Countries | 0 | - | 4.98 | 102,873 |
| Countries with the Most Species | 0 | - | 4.99 | 94,158 |
| Countries 197 to 205 | 0 | - | 4.88 | 67,265 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 52,690 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 46,872 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,055 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 71,649 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 55,824 |
| Countries in the Alps | 0 | - | 4.87 | 114,770 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 93,222 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 102,665 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,152 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 93,850 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 113,681 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 93,878 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 97,835 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 51,752 |
| Largest Country by Body of Water | 0 | - | 4.96 | 49,498 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 60,883 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 52,571 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 40,362 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 102,310 |
| Arctic Ocean Countries | 0 | - | 4.95 | 77,740 |
| Countries with the Most Grassland | 0 | - | 4.93 | 75,688 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 114,201 |
| Countries with the Most Climate Zones | 0 | - | 4.95 | 66,623 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 58,394 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 42,750 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 233,095 |
| World Countries - Blind Typing | 0 | - | 5.00 | 101,975 |
| Countries in Their Own Alphabet | 0 | - | 4.96 | 46,734 |
| Largest Countries By Category | 0 | - | 4.97 | 154,738 |
| Countries by Countries | 0 | - | 4.96 | 60,906 |
| Country Flags with the Most White | 0 | - | 4.87 | 135,468 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,516 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 46,973 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 86,424 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,630,401 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 368,142 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 394,027 |
| Island Countries Quiz | 0 | - | 4.99 | 702,696 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,023,086 |
| Northernmost Countries | 0 | - | 4.99 | 350,347 |
| Countries of South America | 0 | - | 5.00 | 896,814 |
| Countries of Oceania | 0 | - | 5.00 | 1,017,608 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,805,845 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 167,358 |
| Countries with Megacities | 0 | - | 4.99 | 228,341 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 193,525 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 109,939 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 132,303 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 77,566 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 313,601 |
| Countries by Official Language | 0 | - | 4.95 | 189,686 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 289,432 |
| Countries in their Native Language | 0 | - | 4.99 | 193,676 |
| Independence from Whom | 0 | - | 4.99 | 206,197 |
| Subdivisions by Country | 0 | - | 4.86 | 49,548 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 128,132 |
| Megadiverse Countries | 0 | - | 4.97 | 132,941 |
| Countries With the Most English Speakers | 0 | - | 4.88 | 127,405 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,343 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 123,779 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,451 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.86 | 50,015 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 159,324 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,129 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 90,824 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 151,921 |
| Countries with Multiple Populous Islands | 0 | - | 4.88 | 93,958 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,294 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 72,890 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 106,201 |
| Countries Furthest from the United States | 0 | - | 4.94 | 87,690 |
| Countries with the Highest HDI | 0 | - | 4.95 | 135,798 |
| Straight Shot to the Arctic Circle | 0 | - | 4.87 | 73,887 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,130 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,330,999 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 105,040 |
| World Map Quiz | 0 | - | 4.84 | 61,496 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 146,719 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 104,598 |
| Southernmost Countries of the World | 0 | - | 4.99 | 223,705 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 102,357 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 120,244 |
| Countries With the Most Languages | 0 | - | 4.89 | 196,058 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 108,294 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 91,748 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 96,944 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 60,117 |
| Tallest Countries North to South | 0 | - | 4.83 | 118,239 |
| Widest Countries East to West | 0 | - | 4.92 | 127,475 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 70,885 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 183,645 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 96,836 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 92,723 |
| Largest Countries as a Percent of Continent | 0 | - | 4.98 | 146,083 |
| Countries with the Most Desert | 0 | - | 4.93 | 125,728 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 68,727 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,291 |
| Countries with Double Letters | 0 | - | 4.96 | 89,537 |
| Countries that End in N | 0 | - | 4.93 | 152,682 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 254,216 |
| Countries with Six Letters Quiz | 0 | - | 4.93 | 206,764 |
| Countries with W | 0 | - | 4.97 | 155,090 |
| Countries with Z | 0 | - | 4.98 | 283,163 |
| Countries with Letters Missing | 0 | - | 4.97 | 181,653 |
| Countries That End in U | 0 | - | 4.95 | 117,668 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 105,906 |
| Countries that End in O | 0 | - | 4.92 | 157,010 |
| Countries that End in R | 0 | - | 4.84 | 101,634 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 153,968 |
| Countries Ending in "IA" | 0 | - | 4.99 | 204,235 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 167,193 |
| Countries by Last Two Letters | 0 | - | 4.87 | 133,174 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 139,097 |
| Countries That End in Y | 0 | - | 4.91 | 184,095 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 194,143 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 149,845 |
| Countries that End in I | 0 | - | 4.93 | 118,829 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 179,934 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 94,232 |
| Countries That End in NIA | 0 | - | 4.92 | 107,825 |
| Countries That End in BIA | 0 | - | 4.92 | 146,189 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 164,239 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 117,157 |
| Countries That End in RIA | 0 | - | 4.92 | 124,853 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 108,600 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 221,879 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 130,687 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 122,901 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 88,512 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 73,027 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 50,878 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 101,038 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 122,905 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 47,980 |
| Countries with the Word "And" | 0 | - | 4.99 | 114,445 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 51,047 |
| Countries that End in L | 0 | - | 4.94 | 154,326 |
| "Land" Countries | 0 | - | 4.98 | 304,054 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 203,277 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,589 |
| City to Country Quiz #1 | 0 | - | 4.97 | 153,699 |
| City to Country Quiz #3 | 0 | - | 4.88 | 107,677 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 77,383 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 224,820 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 196,776 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 124,353 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 160,201 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 220,451 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 149,797 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 69,919 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 107,230 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 85,721 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 61,202 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,413,560 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 371,899 |
| One Border Countries | 0 | - | 4.98 | 455,136 |
| Top Producing Countries | 0 | - | 4.63 | 115,408 |
| Country Codes Quiz | 0 | - | 4.45 | 81,619 |
| Countries on the Equator | 0 | - | 4.63 | 139,285 |
| Members of the Arab League | 0 | - | 4.78 | 75,212 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,064 |
| Separatist Movements | 0 | - | 4.44 | 45,251 |
| Countries with the Best Passports | 0 | - | 4.75 | 83,595 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,351 |
| Next Country Alphabetically | 0 | - | 4.70 | 85,068 |
| Westernmost Countries | 0 | - | 4.50 | 49,173 |
| Easternmost Countries | 0 | - | 4.74 | 62,326 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,140 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 106,737 |
| Indochina Countries | 0 | - | 4.72 | 65,481 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,353 |
| Countries With the Most Conflict Deaths | 0 | - | 4.62 | 95,262 |
| Highest Foreign Aid Recipients | 0 | - | 4.68 | 43,708 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,737 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 47,881 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 52,971 |
| Countries that are the Source of Refugees | 0 | - | 4.69 | 60,000 |
| Countries 206 to 242 | 0 | - | 4.70 | 33,355 |
| Most Populous Countries By Category | 0 | - | 4.55 | 84,222 |
| Countries with the Most Turkic People | 0 | - | 4.74 | 44,952 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 60,717 |
| Flyover Countries | 0 | - | 4.64 | 50,117 |
