| Landlocked Countries | 0 | - | 4.99 | 423,289 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,687,227 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,130 |
| Himalayan Countries | 0 | - | 4.94 | 139,308 |
| Andean Countries | 0 | - | 4.93 | 84,930 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,146 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,311 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,726 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,039 |
| Danube Countries | 0 | - | 4.97 | 72,158 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,235 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,567 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,593 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,099 |
| European Landlocked Countries | 0 | - | 4.99 | 147,314 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,882 |
| Countries with the Most Species | 0 | - | 4.99 | 103,368 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,013 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,658 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,776 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,636 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,397 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,806 |
| Countries in the Alps | 0 | - | 4.87 | 118,416 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,875 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,335 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,773 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,750 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,662 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,064 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,850 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,633 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,265 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,987 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,736 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,608 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,345 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,596 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,662 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,241 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,431 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,928 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,285 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,650 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,500 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,335 |
| Largest Countries By Category | 0 | - | 4.97 | 158,451 |
| Countries by Countries | 0 | - | 4.96 | 63,388 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,907 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,332 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,602 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,822 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,787,977 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,763 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,934 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,181 |
| Island Countries | 0 | - | 4.99 | 711,541 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,561 |
| Northernmost Countries | 0 | - | 4.99 | 362,646 |
| Countries of South America | 0 | - | 5.00 | 929,194 |
| Countries of Oceania | 0 | - | 5.00 | 1,059,219 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,881,477 |
| "Land" Countries | 0 | - | 4.98 | 337,709 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,302 |
| Countries with Megacities | 0 | - | 4.99 | 265,500 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,119 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,678 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,371 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,749 |
| Countries by Official Language | 0 | - | 4.95 | 195,524 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,762 |
| Countries in their Native Language | 0 | - | 4.99 | 199,309 |
| Independence from Whom | 0 | - | 4.99 | 212,406 |
| Subdivisions by Country | 0 | - | 4.87 | 50,502 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,960 |
| Megadiverse Countries | 0 | - | 4.96 | 135,112 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,328 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,431 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,312 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,145 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,309 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,670 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,654 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,434 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,724 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,190 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,968 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,977 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,288 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,027 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,452 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,566 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,387,094 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,635 |
| World Map Quiz | 0 | - | 4.81 | 65,288 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,962 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,482 |
| Countries by Founding Story | 0 | - | 4.95 | 77,479 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,365 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,452 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,154 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,677 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,051 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,164 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,422 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,513 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,680 |
| Widest Countries East to West | 0 | - | 4.92 | 129,784 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,486 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,845 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,402 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,862 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,742 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,002 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,424 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,828 |
| Countries with Double Letters | 0 | - | 4.96 | 96,549 |
| Countries that End in N | 0 | - | 4.95 | 171,448 |
| Countries with Five Letters | 0 | - | 4.96 | 283,006 |
| Countries with Six Letters | 0 | - | 4.94 | 213,871 |
| Countries with W | 0 | - | 4.96 | 160,554 |
| Countries with Z | 0 | - | 4.98 | 291,800 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,916 |
| Countries That End in U | 0 | - | 4.95 | 120,973 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,684 |
| Countries that End in O | 0 | - | 4.92 | 159,624 |
| Countries that End in R | 0 | - | 4.87 | 119,045 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,801 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,372 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,856 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,607 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,514 |
| Countries That End in Y | 0 | - | 4.91 | 185,956 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,105 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,015 |
| Countries that End in I | 0 | - | 4.94 | 135,184 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,280 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,899 |
| Countries That End in NIA | 0 | - | 4.92 | 109,869 |
| Countries That End in BIA | 0 | - | 4.93 | 149,338 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,261 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,552 |
| Countries That End in RIA | 0 | - | 4.93 | 126,906 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,149 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,953 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,885 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,317 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,870 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,654 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,148 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,474 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,656 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,518 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,445 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,141 |
| Countries that End in L | 0 | - | 4.94 | 156,945 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,411 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,296 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,114 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,042 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,086 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,988 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,845 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,258 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,987 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,642 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,000 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,151 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,741 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,068 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,450,352 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,483 |
| One Border Countries | 0 | - | 4.98 | 470,642 |
| Top Producing Countries | 0 | - | 4.63 | 116,317 |
| ISO Country Codes | 0 | - | 4.49 | 91,476 |
| Countries on the Equator | 0 | - | 4.63 | 141,080 |
| Members of the Arab League | 0 | - | 4.77 | 75,670 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,977 |
| Separatist Movements | 0 | - | 4.45 | 45,949 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,378 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,864 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,335 |
| Westernmost Countries | 0 | - | 4.43 | 62,493 |
| Easternmost Countries | 0 | - | 4.74 | 63,019 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,711 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,805 |
| Indochina Countries | 0 | - | 4.74 | 66,264 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,662 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,416 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 44,004 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,134 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,445 |
| Countries with More Sheep than People | 0 | - | 4.48 | 31,728 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,769 |
| Countries that are the Source of Refugees | 0 | - | 4.78 | 74,398 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,008 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,540 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,776 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,676 |
| Flyover Countries | 0 | - | 4.69 | 50,906 |
