| Landlocked Countries Quiz | 0 | - | 4.99 | 391,216 |
| Countries of the World Quiz | 0 | - | 5.00 | 44,971,478 |
| Sahara Desert Countries | 0 | - | 4.98 | 149,852 |
| Himalayan Countries | 0 | - | 4.94 | 125,952 |
| Andean Countries | 0 | - | 4.93 | 70,886 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 58,358 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 115,978 |
| Coffee Producing Countries | 0 | - | 4.83 | 61,711 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 60,798 |
| Danube Countries | 0 | - | 4.97 | 61,848 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 98,248 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 82,866 |
| Countries with the Worst Passports | 0 | - | 4.92 | 75,767 |
| Countries with the Most Immigrants | 0 | - | 4.89 | 141,371 |
| European Landlocked Countries | 0 | - | 4.99 | 142,248 |
| Partially Recognized Countries | 0 | - | 4.98 | 100,101 |
| Countries with the Most Species | 0 | - | 4.99 | 93,260 |
| Countries 197 to 205 | 0 | - | 4.88 | 65,055 |
| Tropic of Cancer Countries | 0 | - | 4.95 | 47,150 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 46,231 |
| Countries that Use the Peso | 0 | - | 4.89 | 57,132 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 70,651 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 54,585 |
| Countries in the Alps | 0 | - | 4.86 | 112,219 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 91,757 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 99,765 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 76,145 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 91,162 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 111,875 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 92,753 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 96,301 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 50,605 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 48,580 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 59,630 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 51,805 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 39,608 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 100,939 |
| Arctic Ocean Countries | 0 | - | 4.94 | 76,591 |
| Countries with the Most Grassland | 0 | - | 4.93 | 74,436 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 111,250 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 65,562 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 57,459 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.94 | 40,804 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 226,906 |
| World Countries - Blind Typing | 0 | - | 5.00 | 97,982 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 45,811 |
| Largest Countries By Category | 0 | - | 4.97 | 152,684 |
| Countries by Countries | 0 | - | 4.96 | 59,354 |
| Country Flags with the Most White | 0 | - | 4.85 | 133,436 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,999 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 84,962 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,456,675 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,533,861 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 363,308 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 387,212 |
| Island Countries Quiz | 0 | - | 4.99 | 695,897 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,007,423 |
| Northernmost Countries | 0 | - | 4.99 | 345,340 |
| Countries of South America | 0 | - | 5.00 | 876,145 |
| Countries of Oceania | 0 | - | 5.00 | 992,180 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,759,494 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 163,015 |
| Countries with Megacities | 0 | - | 4.99 | 222,679 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 189,784 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 107,806 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 129,083 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 75,231 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 303,068 |
| Countries by Official Language | 0 | - | 4.95 | 186,263 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.90 | 284,946 |
| Countries in their Native Language | 0 | - | 4.98 | 190,588 |
| Independence from Whom | 0 | - | 4.99 | 202,814 |
| Subdivisions by Country | 0 | - | 4.85 | 48,995 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 125,869 |
| Megadiverse Countries | 0 | - | 4.97 | 131,348 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 124,212 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 53,431 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 122,766 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 73,566 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.86 | 49,605 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 157,020 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 60,318 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 88,837 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 150,215 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 81,107 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,656 |
| Countries by Sports League Revenue | 0 | - | 4.93 | 69,834 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 105,363 |
| Countries Furthest from the United States | 0 | - | 4.93 | 86,549 |
| Countries with the Highest HDI | 0 | - | 4.95 | 135,036 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 72,776 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 69,255 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,289,134 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 100,907 |
| World Map Quiz | 0 | - | 4.87 | 59,239 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 87,883 |
| Southernmost Countries of the World | 0 | - | 4.99 | 220,532 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 100,309 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 117,910 |
| Countries With the Most Languages | 0 | - | 4.89 | 192,185 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.94 | 98,050 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 89,704 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 94,902 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 59,063 |
| Tallest Countries North to South | 0 | - | 4.83 | 116,702 |
| Widest Countries East to West | 0 | - | 4.92 | 125,835 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 70,458 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 181,690 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 96,025 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 91,228 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 126,377 |
| Countries with the Most Desert | 0 | - | 4.93 | 124,211 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 68,313 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 33,862 |
| Countries with Double Letters | 0 | - | 4.97 | 86,307 |
| Countries that End in N | 0 | - | 4.94 | 149,786 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 250,287 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 203,869 |
| Countries with W | 0 | - | 4.97 | 152,857 |
| Countries with Z | 0 | - | 4.98 | 279,872 |
| Countries with Letters Missing | 0 | - | 4.97 | 179,369 |
| Countries That End in U | 0 | - | 4.95 | 116,375 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 103,423 |
| Countries that End in O | 0 | - | 4.92 | 155,917 |
| Countries that End in R | 0 | - | 4.84 | 100,944 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 152,829 |
| Countries Ending in "IA" | 0 | - | 4.99 | 200,932 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 165,575 |
| Countries by Last Two Letters | 0 | - | 4.88 | 131,696 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 137,620 |
| Countries That End in Y | 0 | - | 4.91 | 182,996 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 191,865 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 148,012 |
| Countries that End in I | 0 | - | 4.92 | 118,195 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 177,328 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 93,188 |
| Countries That End in NIA | 0 | - | 4.92 | 106,860 |
| Countries That End in BIA | 0 | - | 4.92 | 144,881 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 162,567 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 115,901 |
| Countries That End in RIA | 0 | - | 4.92 | 123,321 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 107,205 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 218,339 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 128,822 |
| Divided Country Name Puzzle #3 | 0 | - | 4.91 | 120,779 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 86,698 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 72,082 |
| Countries With One Word and Three A's | 0 | - | 4.94 | 49,694 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 99,699 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 121,315 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 47,105 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 49,336 |
| Countries that End in L | 0 | - | 4.94 | 153,124 |
| "Land" Countries | 0 | - | 4.98 | 301,447 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 199,188 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,303 |
| City to Country Quiz #1 | 0 | - | 4.96 | 151,511 |
| City to Country Quiz #3 | 0 | - | 4.87 | 105,548 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 76,281 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 222,233 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 194,514 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 123,358 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 158,442 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 218,274 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 148,651 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 69,372 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 106,402 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.94 | 85,251 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 60,355 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,394,514 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 367,570 |
| One Border Countries | 0 | - | 4.98 | 448,648 |
| Top Producing Countries | 0 | - | 4.63 | 114,601 |
| Country Codes Quiz | 0 | - | 4.45 | 81,070 |
| Countries on the Equator | 0 | - | 4.70 | 138,500 |
| Members of the Arab League | 0 | - | 4.78 | 74,912 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 68,477 |
| Separatist Movements | 0 | - | 4.44 | 44,825 |
| Countries with the Best Passports | 0 | - | 4.79 | 82,378 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,032 |
| Next Country Alphabetically | 0 | - | 4.70 | 84,278 |
| Westernmost Countries | 0 | - | 4.49 | 48,946 |
| Easternmost Countries | 0 | - | 4.74 | 61,995 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 38,829 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 105,522 |
| Indochina Countries | 0 | - | 4.70 | 65,004 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,163 |
| Countries With the Most Conflict Deaths | 0 | - | 4.68 | 94,756 |
| Highest Foreign Aid Recipients | 0 | - | 4.64 | 43,513 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,494 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 47,539 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 52,424 |
| Countries that are the Source of Refugees | 0 | - | 4.69 | 59,434 |
| Countries 206 to 242 | 0 | - | 4.74 | 32,943 |
| Most Populous Countries By Category | 0 | - | 4.55 | 64,430 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 44,489 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 60,179 |
| Flyover Countries | 0 | - | 4.64 | 49,654 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 71,538 |
| Countries with the Most Coral Reefs | 0 | - | 4.75 | 47,510 |
