| Landlocked Countries Quiz | 0 | - | 4.99 | 376,038 |
| Countries of the World Quiz | 0 | - | 5.00 | 43,816,024 |
| Sahara Desert Countries | 0 | - | 4.98 | 142,533 |
| Himalayan Countries | 0 | - | 4.95 | 119,464 |
| Andean Countries | 0 | - | 4.92 | 67,016 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 55,468 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 111,008 |
| Coffee Producing Countries | 0 | - | 4.81 | 58,569 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 58,184 |
| Danube Countries | 0 | - | 4.97 | 60,090 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 95,841 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 81,148 |
| Countries with the Best Passports | 0 | - | 4.81 | 78,840 |
| Countries with the Worst Passports | 0 | - | 4.92 | 61,890 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 135,272 |
| European Landlocked Countries | 0 | - | 4.99 | 140,305 |
| Partially Recognized Countries | 0 | - | 4.98 | 96,768 |
| Countries with the Most Species | 0 | - | 4.99 | 91,865 |
| Countries 197 to 205 | 0 | - | 4.87 | 62,204 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 46,383 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 45,501 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 51,928 |
| Countries that Use the Peso | 0 | - | 4.84 | 49,069 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 69,474 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 52,955 |
| Countries in the Alps | 0 | - | 4.86 | 109,336 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 89,959 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 96,288 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 74,846 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 82,768 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 109,815 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 91,290 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 94,250 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 49,258 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 47,504 |
| Countries with the Most Container Port Traffic | 0 | - | 4.91 | 58,161 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 72,260 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 50,828 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 38,712 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 99,556 |
| Arctic Ocean Countries | 0 | - | 4.94 | 75,251 |
| Countries with the Most Grassland | 0 | - | 4.93 | 72,900 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 107,470 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 64,304 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 56,223 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 218,988 |
| World Countries - Blind Typing | 0 | - | 5.00 | 83,231 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 44,575 |
| Largest Countries By Category | 0 | - | 4.97 | 150,319 |
| Countries by Countries | 0 | - | 4.96 | 57,900 |
| Country Flags with the Most White | 0 | - | 4.87 | 130,521 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,416 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 83,100 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,349,115 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,425,719 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 357,607 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 378,960 |
| Island Countries Quiz | 0 | - | 4.99 | 686,828 |
| Biggest Countries by Area | 0 | - | 5.00 | 982,402 |
| Northernmost Countries | 0 | - | 4.99 | 340,787 |
| Countries of South America | 0 | - | 5.00 | 852,500 |
| Countries of Oceania | 0 | - | 5.00 | 963,760 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,706,698 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 156,549 |
| Countries with Megacities | 0 | - | 4.99 | 215,609 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 185,093 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 105,375 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 124,302 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 72,215 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 267,426 |
| Countries by Official Language | 0 | - | 4.95 | 182,611 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.90 | 280,047 |
| Countries in their Native Language | 0 | - | 4.98 | 187,507 |
| Independence from Whom | 0 | - | 4.99 | 197,974 |
| Subdivisions by Country | 0 | - | 4.86 | 48,255 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 122,277 |
| Megadiverse Countries | 0 | - | 4.96 | 130,019 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 120,664 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 110,286 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 49,155 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 154,293 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 58,944 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 85,230 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 148,470 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 79,691 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,152 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 65,532 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 104,249 |
| Countries Furthest from the United States | 0 | - | 4.95 | 85,442 |
| Countries with the Highest HDI | 0 | - | 4.95 | 133,814 |
| Straight Shot to the Arctic Circle | 0 | - | 4.89 | 71,702 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 68,074 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,234,985 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 96,324 |
| World Map Quiz | 0 | - | 4.88 | 56,626 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 132,157 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 86,008 |
| Southernmost Countries of the World | 0 | - | 4.99 | 217,194 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 97,889 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 115,400 |
| Countries With the Most Languages | 0 | - | 4.88 | 187,545 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 92,046 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 87,872 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 92,874 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 57,891 |
| Tallest Countries North to South | 0 | - | 4.85 | 115,024 |
| Widest Countries East to West | 0 | - | 4.92 | 123,921 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 70,029 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 164,501 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 95,169 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 89,773 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 124,638 |
| Countries with the Most Desert | 0 | - | 4.93 | 122,731 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 67,854 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 33,383 |
| Countries with Double Letters | 0 | - | 4.96 | 80,587 |
| Countries that End in N | 0 | - | 4.93 | 144,671 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 243,905 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 198,920 |
| Countries with W | 0 | - | 4.97 | 132,238 |
| Countries with Z | 0 | - | 4.98 | 274,154 |
| Countries with Letters Missing | 0 | - | 4.97 | 175,489 |
| Countries That End in U | 0 | - | 4.95 | 113,507 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 99,093 |
| Countries that End in O | 0 | - | 4.92 | 153,145 |
| Countries that End in R | 0 | - | 4.84 | 99,536 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 151,526 |
| Countries Ending in "IA" | 0 | - | 4.99 | 196,757 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 162,545 |
| Countries by Last Two Letters | 0 | - | 4.89 | 121,271 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 134,974 |
| Countries That End in Y | 0 | - | 4.91 | 181,321 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 188,087 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 126,767 |
| Countries that End in I | 0 | - | 4.92 | 117,100 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 157,484 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 91,810 |
| Countries That End in NIA | 0 | - | 4.92 | 104,665 |
| Countries That End in BIA | 0 | - | 4.91 | 141,761 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 160,547 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 114,169 |
| Countries That End in RIA | 0 | - | 4.89 | 105,002 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 105,269 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 213,520 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 126,309 |
| Divided Country Name Puzzle #3 | 0 | - | 4.91 | 118,065 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 84,061 |
| Countries With One Word and Three A's | 0 | - | 4.94 | 48,049 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 97,131 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 119,282 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 45,869 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 46,938 |
| Countries that End in L | 0 | - | 4.94 | 151,198 |
| "Land" Countries | 0 | - | 4.98 | 298,704 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 196,057 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 83,780 |
| City to Country Quiz #1 | 0 | - | 4.95 | 138,530 |
| City to Country Quiz #3 | 0 | - | 4.87 | 103,219 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 74,977 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 218,054 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 191,527 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 121,599 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 139,649 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 214,900 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 146,317 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 68,464 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 105,476 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 84,633 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 59,394 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,372,700 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 362,643 |
| One Border Countries | 0 | - | 4.98 | 442,068 |
| Top-Producing Countries | 0 | - | 4.69 | 102,368 |
| Country Codes Quiz | 0 | - | 4.45 | 80,369 |
| Countries on the Equator | 0 | - | 4.74 | 137,101 |
| Members of the Arab League | 0 | - | 4.78 | 74,510 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 67,837 |
| Separatist Movements | 0 | - | 4.46 | 44,256 |
| Prime Meridian Countries | 0 | - | 4.69 | 58,580 |
| Next Country Alphabetically | 0 | - | 4.73 | 83,194 |
| Westernmost Countries | 0 | - | 4.49 | 48,627 |
| Easternmost Countries | 0 | - | 4.71 | 61,615 |
| Countries With the Most ISIS Fighters | 0 | - | 4.53 | 38,450 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 103,416 |
| Indochina Countries | 0 | - | 4.70 | 64,481 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 63,941 |
| Countries With the Most Conflict Deaths | 0 | - | 4.64 | 93,891 |
| Highest Foreign Aid Recipients | 0 | - | 4.65 | 43,280 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,187 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 47,150 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 51,347 |
| Countries that are the Source of Refugees | 0 | - | 4.64 | 58,748 |
| Countries 206 to 242 | 0 | - | 4.71 | 32,391 |
| Most Populous Countries By Category | 0 | - | 4.55 | 63,628 |
| Countries with the Most Turkic People | 0 | - | 4.79 | 43,885 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.78 | 59,450 |
| Flyover Countries | 0 | - | 4.64 | 49,096 |
| Top 50 Countries by Area - In Order | 0 | - | 4.75 | 70,273 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 38,777 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 44,997 |
