| Landlocked Countries Quiz | 0 | - | 4.99 | 383,055 |
| Countries of the World Quiz | 0 | - | 5.00 | 44,345,966 |
| Sahara Desert Countries | 0 | - | 4.97 | 145,666 |
| Himalayan Countries | 0 | - | 4.94 | 122,327 |
| Andean Countries | 0 | - | 4.93 | 68,745 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 56,716 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 113,136 |
| Coffee Producing Countries | 0 | - | 4.83 | 59,936 |
| Countries with Shrinking Populations | 0 | - | 4.92 | 59,331 |
| Danube Countries | 0 | - | 4.97 | 60,853 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 96,888 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 81,913 |
| Countries with the Best Passports | 0 | - | 4.82 | 80,707 |
| Countries with the Worst Passports | 0 | - | 4.89 | 69,210 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 138,278 |
| European Landlocked Countries | 0 | - | 4.99 | 141,037 |
| Partially Recognized Countries | 0 | - | 4.98 | 98,129 |
| Countries with the Most Species | 0 | - | 4.99 | 92,345 |
| Countries 197 to 205 | 0 | - | 4.87 | 63,510 |
| Tropic of Cancer Countries | 0 | - | 4.95 | 46,700 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 45,797 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 52,591 |
| Countries that Use the Peso | 0 | - | 4.88 | 56,363 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 69,956 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 53,661 |
| Countries in the Alps | 0 | - | 4.86 | 110,467 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 90,739 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 97,868 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 75,403 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 83,765 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 110,653 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 91,962 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 95,023 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 49,866 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 47,979 |
| Countries with the Most Container Port Traffic | 0 | - | 4.91 | 58,808 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 72,741 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 51,270 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.89 | 39,107 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 100,168 |
| Arctic Ocean Countries | 0 | - | 4.94 | 75,855 |
| Countries with the Most Grassland | 0 | - | 4.93 | 73,549 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 109,057 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 64,824 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 56,755 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 222,196 |
| World Countries - Blind Typing | 0 | - | 5.00 | 95,179 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 45,118 |
| Largest Countries By Category | 0 | - | 4.97 | 151,424 |
| Countries by Countries | 0 | - | 4.96 | 58,478 |
| Country Flags with the Most White | 0 | - | 4.87 | 132,108 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,670 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 83,969 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,408,477 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,476,959 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 360,317 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 382,504 |
| Island Countries Quiz | 0 | - | 4.99 | 691,011 |
| Biggest Countries by Area | 0 | - | 5.00 | 990,147 |
| Northernmost Countries | 0 | - | 4.99 | 342,817 |
| Countries of South America | 0 | - | 5.00 | 863,467 |
| Countries of Oceania | 0 | - | 5.00 | 976,352 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,732,278 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 159,072 |
| Countries with Megacities | 0 | - | 4.99 | 218,317 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 186,916 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 106,321 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 126,792 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 73,331 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 270,147 |
| Countries by Official Language | 0 | - | 4.95 | 184,202 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 282,250 |
| Countries in their Native Language | 0 | - | 4.98 | 188,978 |
| Independence from Whom | 0 | - | 4.99 | 199,992 |
| Subdivisions by Country | 0 | - | 4.86 | 48,542 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 123,849 |
| Megadiverse Countries | 0 | - | 4.96 | 130,533 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 122,266 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 121,875 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 49,342 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 155,523 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 59,511 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 86,890 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 149,345 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 80,475 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,434 |
| Countries by Sports League Revenue | 0 | - | 4.93 | 67,610 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 104,897 |
| Countries Furthest from the United States | 0 | - | 4.95 | 86,002 |
| Countries with the Highest HDI | 0 | - | 4.95 | 134,246 |
| Straight Shot to the Arctic Circle | 0 | - | 4.89 | 72,197 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 68,659 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,259,245 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 98,332 |
| World Map Quiz | 0 | - | 4.88 | 57,781 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 135,330 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 86,806 |
| Southernmost Countries of the World | 0 | - | 4.99 | 218,726 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 98,824 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 116,669 |
| Countries With the Most Languages | 0 | - | 4.89 | 189,445 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 92,585 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 88,658 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 93,661 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 58,415 |
| Tallest Countries North to South | 0 | - | 4.85 | 115,676 |
| Widest Countries East to West | 0 | - | 4.92 | 124,822 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 70,212 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 180,221 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 95,491 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 90,337 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 125,511 |
| Countries with the Most Desert | 0 | - | 4.93 | 123,422 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 68,054 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 33,579 |
| Countries with Double Letters | 0 | - | 4.96 | 82,470 |
| Countries that End in N | 0 | - | 4.93 | 146,402 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 246,378 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 200,778 |
| Countries with W | 0 | - | 4.97 | 149,830 |
| Countries with Z | 0 | - | 4.98 | 276,306 |
| Countries with Letters Missing | 0 | - | 4.97 | 176,703 |
| Countries That End in U | 0 | - | 4.95 | 114,465 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 100,791 |
| Countries that End in O | 0 | - | 4.91 | 154,551 |
| Countries that End in R | 0 | - | 4.84 | 100,039 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 152,016 |
| Countries Ending in "IA" | 0 | - | 4.99 | 198,351 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 163,480 |
| Countries by Last Two Letters | 0 | - | 4.87 | 121,967 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 135,727 |
| Countries That End in Y | 0 | - | 4.91 | 182,218 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 189,428 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 127,648 |
| Countries that End in I | 0 | - | 4.92 | 117,523 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 158,556 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 92,290 |
| Countries That End in NIA | 0 | - | 4.92 | 105,209 |
| Countries That End in BIA | 0 | - | 4.92 | 142,866 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 161,386 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 114,874 |
| Countries That End in RIA | 0 | - | 4.89 | 105,580 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 106,024 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 215,603 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 127,414 |
| Divided Country Name Puzzle #3 | 0 | - | 4.91 | 119,268 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 85,121 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 71,284 |
| Countries With One Word and Three A's | 0 | - | 4.94 | 48,720 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 98,228 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 120,133 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 46,350 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 47,922 |
| Countries that End in L | 0 | - | 4.94 | 151,913 |
| "Land" Countries | 0 | - | 4.98 | 299,847 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 197,731 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 83,970 |
| City to Country Quiz #1 | 0 | - | 4.96 | 150,695 |
| City to Country Quiz #3 | 0 | - | 4.87 | 104,815 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 75,685 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 219,667 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 192,700 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 122,295 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 147,914 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 216,299 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.97 | 147,388 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 68,849 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 106,048 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 84,903 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 59,851 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,382,268 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 364,974 |
| One Border Countries | 0 | - | 4.98 | 445,338 |
| Top-Producing Countries | 0 | - | 4.69 | 102,624 |
| Country Codes Quiz | 0 | - | 4.45 | 80,685 |
| Countries on the Equator | 0 | - | 4.74 | 137,663 |
| Members of the Arab League | 0 | - | 4.78 | 74,699 |
| Countries with the Oldest Median Age | 0 | - | 4.79 | 68,104 |
| Separatist Movements | 0 | - | 4.46 | 44,536 |
| Prime Meridian Countries | 0 | - | 4.69 | 58,848 |
| Next Country Alphabetically | 0 | - | 4.71 | 83,702 |
| Westernmost Countries | 0 | - | 4.49 | 48,780 |
| Easternmost Countries | 0 | - | 4.70 | 61,792 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 38,603 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 104,390 |
| Indochina Countries | 0 | - | 4.70 | 64,714 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,044 |
| Countries With the Most Conflict Deaths | 0 | - | 4.65 | 94,220 |
| Highest Foreign Aid Recipients | 0 | - | 4.64 | 43,396 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,334 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 47,320 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 52,048 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 59,053 |
| Countries 206 to 242 | 0 | - | 4.73 | 32,622 |
| Most Populous Countries By Category | 0 | - | 4.54 | 64,019 |
| Countries with the Most Turkic People | 0 | - | 4.74 | 44,156 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.75 | 59,768 |
| Flyover Countries | 0 | - | 4.64 | 49,375 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 70,809 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 38,958 |
