| Landlocked Countries Quiz | 0 | - | 4.99 | 374,224 |
| Countries of the World Quiz | 0 | - | 5.00 | 43,671,983 |
| Sahara Desert Countries | 0 | - | 4.98 | 141,634 |
| Himalayan Countries | 0 | - | 4.95 | 118,720 |
| Andean Countries | 0 | - | 4.92 | 66,502 |
| Countries with the Oldest Median Age | 0 | - | 4.83 | 67,595 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 55,139 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 110,455 |
| Coffee Producing Countries | 0 | - | 4.81 | 58,202 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 57,895 |
| Danube Countries | 0 | - | 4.97 | 59,880 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 95,590 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 80,937 |
| Countries with the Best Passports | 0 | - | 4.81 | 78,371 |
| Countries with the Worst Passports | 0 | - | 4.91 | 60,808 |
| Countries with the Most Immigrants | 0 | - | 4.89 | 134,509 |
| European Landlocked Countries | 0 | - | 4.99 | 139,828 |
| Partially Recognized Countries | 0 | - | 4.98 | 96,400 |
| Countries with the Most Species | 0 | - | 4.99 | 91,722 |
| Countries 197 to 205 | 0 | - | 4.87 | 61,872 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 46,309 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 45,426 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 51,775 |
| Countries that Use the Peso | 0 | - | 4.83 | 48,915 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 69,345 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 52,789 |
| Countries in the Alps | 0 | - | 4.86 | 108,697 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 89,735 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 95,915 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 74,664 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 82,582 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 109,530 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 91,129 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 94,017 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 49,072 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 47,390 |
| Countries with the Most Container Port Traffic | 0 | - | 4.91 | 58,000 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 72,150 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 50,730 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.89 | 38,601 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 99,373 |
| Arctic Ocean Countries | 0 | - | 4.94 | 75,093 |
| Countries with the Most Grassland | 0 | - | 4.93 | 72,736 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 107,084 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 64,157 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 56,101 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 218,103 |
| World Countries - Blind Typing | 0 | - | 5.00 | 82,746 |
| Countries in Their Own Alphabet | 0 | - | 4.96 | 44,453 |
| Largest Countries By Category | 0 | - | 4.97 | 150,050 |
| Countries by Countries | 0 | - | 4.96 | 57,767 |
| Country Flags with the Most White | 0 | - | 4.87 | 130,243 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,341 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 82,890 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,337,427 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,411,273 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 356,907 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 377,858 |
| Island Countries Quiz | 0 | - | 4.99 | 685,745 |
| Biggest Countries by Area | 0 | - | 5.00 | 979,893 |
| Northernmost Countries | 0 | - | 4.99 | 339,993 |
| Countries of South America | 0 | - | 5.00 | 849,415 |
| Countries of Oceania | 0 | - | 5.00 | 960,203 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,699,767 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 155,441 |
| Countries with Megacities | 0 | - | 4.99 | 214,349 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 184,261 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 104,906 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 105,448 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 71,643 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 266,246 |
| Countries by Official Language | 0 | - | 4.95 | 182,149 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.90 | 279,289 |
| Countries in their Native Language | 0 | - | 4.98 | 187,080 |
| Independence from Whom | 0 | - | 4.99 | 197,500 |
| Subdivisions by Country | 0 | - | 4.86 | 48,172 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 121,930 |
| Megadiverse Countries | 0 | - | 4.96 | 129,856 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 119,759 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 110,174 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 49,088 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 154,026 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 58,836 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 84,948 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 148,345 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 79,592 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,109 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 64,773 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 104,153 |
| Countries Furthest from the United States | 0 | - | 4.95 | 85,318 |
| Countries with the Highest HDI | 0 | - | 4.95 | 133,684 |
| Straight Shot to the Arctic Circle | 0 | - | 4.90 | 71,571 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 67,960 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,227,298 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 95,677 |
| World Map Quiz | 0 | - | 4.88 | 56,299 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 131,291 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 85,809 |
| Southernmost Countries of the World | 0 | - | 4.99 | 216,629 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 97,479 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 114,970 |
| Countries With the Most Languages | 0 | - | 4.88 | 186,840 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 91,802 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 87,520 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 92,215 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 57,672 |
| Tallest Countries North to South | 0 | - | 4.85 | 114,807 |
| Widest Countries East to West | 0 | - | 4.92 | 123,715 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,939 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 164,292 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 95,049 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 89,554 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 124,087 |
| Countries with the Most Desert | 0 | - | 4.93 | 122,538 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 67,766 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 33,314 |
| Countries with Double Letters | 0 | - | 4.96 | 79,970 |
| Countries that End in N | 0 | - | 4.93 | 144,205 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 243,044 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 198,407 |
| Countries with W | 0 | - | 4.97 | 131,872 |
| Countries with Z | 0 | - | 4.98 | 273,540 |
| Countries with Letters Missing | 0 | - | 4.97 | 175,173 |
| Countries That End in U | 0 | - | 4.95 | 113,234 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 98,665 |
| Countries that End in O | 0 | - | 4.92 | 152,931 |
| Countries that End in R | 0 | - | 4.84 | 99,393 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 151,256 |
| Countries Ending in "IA" | 0 | - | 4.99 | 196,276 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 162,253 |
| Countries by Last Two Letters | 0 | - | 4.89 | 121,040 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 134,549 |
| Countries That End in Y | 0 | - | 4.91 | 181,175 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 187,720 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 126,502 |
| Countries that End in I | 0 | - | 4.92 | 116,980 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 157,166 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 91,498 |
| Countries That End in NIA | 0 | - | 4.92 | 104,517 |
| Countries That End in BIA | 0 | - | 4.92 | 141,568 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 160,052 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 113,944 |
| Countries That End in RIA | 0 | - | 4.89 | 104,854 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 105,028 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 212,979 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 126,051 |
| Divided Country Name Puzzle #3 | 0 | - | 4.91 | 117,722 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 83,725 |
| Add A Letter - Make a Country | 0 | - | 4.80 | 70,693 |
| Countries With One Word and Three A's | 0 | - | 4.93 | 47,822 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 96,897 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 119,038 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 45,715 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 46,625 |
| Countries that End in L | 0 | - | 4.94 | 150,993 |
| "Land" Countries | 0 | - | 4.98 | 298,382 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 195,754 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 83,720 |
| City to Country Quiz #1 | 0 | - | 4.95 | 138,308 |
| City to Country Quiz #3 | 0 | - | 4.87 | 103,099 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 74,809 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 217,689 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 191,250 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 121,450 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 139,446 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 214,286 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 146,138 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 68,404 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 105,386 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 84,568 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 59,287 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,369,807 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 362,056 |
| One Border Countries | 0 | - | 4.98 | 437,469 |
| Top-Producing Countries | 0 | - | 4.69 | 102,296 |
| Country Codes Quiz | 0 | - | 4.45 | 80,258 |
| Countries on the Equator | 0 | - | 4.74 | 136,977 |
| Members of the Arab League | 0 | - | 4.78 | 74,453 |
| Separatist Movements | 0 | - | 4.46 | 44,177 |
| Prime Meridian Countries | 0 | - | 4.69 | 58,473 |
| Next Country Alphabetically | 0 | - | 4.73 | 83,116 |
| Westernmost Countries | 0 | - | 4.49 | 48,582 |
| Easternmost Countries | 0 | - | 4.71 | 61,571 |
| Countries With the Most ISIS Fighters | 0 | - | 4.53 | 38,393 |
| Top 10 Most Famous Island Countries | 0 | - | 4.68 | 103,219 |
| Indochina Countries | 0 | - | 4.70 | 64,402 |
| Atlantic Ocean Island Countries | 0 | - | 4.55 | 63,912 |
| Countries With the Most Conflict Deaths | 0 | - | 4.64 | 93,798 |
| Highest Foreign Aid Recipients | 0 | - | 4.64 | 43,250 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,138 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 47,100 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 44,315 |
| Countries that are the Source of Refugees | 0 | - | 4.65 | 58,658 |
| Countries 206 to 242 | 0 | - | 4.71 | 32,342 |
| Most Populous Countries By Category | 0 | - | 4.55 | 63,521 |
| Countries with the Most Turkic People | 0 | - | 4.78 | 43,804 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.78 | 59,343 |
| Flyover Countries | 0 | - | 4.64 | 49,031 |
| Top 50 Countries by Area - In Order | 0 | - | 4.75 | 70,128 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 38,730 |
