| Landlocked Countries Quiz | 0 | - | 4.99 | 373,434 |
| Countries of the World Quiz | 0 | - | 5.00 | 43,622,277 |
| Sahara Desert Countries | 0 | - | 4.98 | 141,286 |
| Himalayan Countries | 0 | - | 4.95 | 118,444 |
| Andean Countries | 0 | - | 4.92 | 66,331 |
| Countries with the Oldest Median Age | 0 | - | 4.83 | 67,414 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 55,029 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 110,230 |
| Coffee Producing Countries | 0 | - | 4.81 | 58,093 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 57,782 |
| Danube Countries | 0 | - | 4.97 | 59,813 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 95,492 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 80,870 |
| Countries with the Best Passports | 0 | - | 4.81 | 78,162 |
| Countries with the Worst Passports | 0 | - | 4.91 | 60,346 |
| Countries with the Most Immigrants | 0 | - | 4.89 | 134,240 |
| European Landlocked Countries | 0 | - | 4.99 | 139,756 |
| Partially Recognized Countries | 0 | - | 4.98 | 96,252 |
| Countries with the Most Species | 0 | - | 4.99 | 91,673 |
| Countries 197 to 205 | 0 | - | 4.87 | 61,738 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 46,270 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 45,397 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 51,702 |
| Countries that Use the Peso | 0 | - | 4.83 | 48,863 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 69,301 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 52,726 |
| Countries in the Alps | 0 | - | 4.86 | 108,582 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 89,645 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 95,763 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 74,595 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 82,508 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 109,401 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 91,069 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 93,931 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 49,022 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 47,351 |
| Countries with the Most Container Port Traffic | 0 | - | 4.91 | 57,925 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 72,090 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 50,692 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.89 | 38,557 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 99,329 |
| Arctic Ocean Countries | 0 | - | 4.94 | 75,046 |
| Countries with the Most Grassland | 0 | - | 4.93 | 72,669 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 106,913 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 64,107 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 56,047 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 217,758 |
| World Countries - Blind Typing | 0 | - | 5.00 | 82,581 |
| Countries in Their Own Alphabet | 0 | - | 4.96 | 44,398 |
| Largest Countries By Category | 0 | - | 4.97 | 149,959 |
| Countries by Countries | 0 | - | 4.96 | 57,715 |
| Country Flags with the Most White | 0 | - | 4.87 | 130,150 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,311 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 82,813 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,333,273 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,406,136 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 356,646 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 377,516 |
| Island Countries Quiz | 0 | - | 4.99 | 685,353 |
| Biggest Countries by Area | 0 | - | 5.00 | 979,182 |
| Northernmost Countries | 0 | - | 4.99 | 339,838 |
| Countries of South America | 0 | - | 5.00 | 848,194 |
| Countries of Oceania | 0 | - | 5.00 | 958,805 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,697,187 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 155,170 |
| Countries with Megacities | 0 | - | 4.99 | 213,853 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 184,090 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 104,807 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 105,304 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 71,514 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 265,979 |
| Countries by Official Language | 0 | - | 4.95 | 181,949 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.90 | 278,908 |
| Countries in their Native Language | 0 | - | 4.98 | 186,900 |
| Independence from Whom | 0 | - | 4.99 | 197,340 |
| Subdivisions by Country | 0 | - | 4.86 | 48,137 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 121,819 |
| Megadiverse Countries | 0 | - | 4.96 | 129,787 |
| Countries With the Most English Speakers | 0 | - | 4.88 | 118,591 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 110,129 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 49,074 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 153,896 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 58,783 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 84,844 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 148,287 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 79,550 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,085 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 64,572 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 104,115 |
| Countries Furthest from the United States | 0 | - | 4.95 | 85,277 |
| Countries with the Highest HDI | 0 | - | 4.95 | 133,629 |
| Straight Shot to the Arctic Circle | 0 | - | 4.90 | 71,522 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 67,919 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,224,713 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 95,466 |
| World Map Quiz | 0 | - | 4.88 | 56,193 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 130,887 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 85,717 |
| Southernmost Countries of the World | 0 | - | 4.99 | 216,500 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 97,227 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 114,862 |
| Countries With the Most Languages | 0 | - | 4.88 | 186,654 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 91,759 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 87,428 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 92,139 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 57,624 |
| Tallest Countries North to South | 0 | - | 4.85 | 114,747 |
| Widest Countries East to West | 0 | - | 4.93 | 123,659 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,924 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 164,233 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 95,014 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 89,502 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 123,968 |
| Countries with the Most Desert | 0 | - | 4.93 | 122,484 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 67,748 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 33,290 |
| Countries with Double Letters | 0 | - | 4.96 | 79,815 |
| Countries that End in N | 0 | - | 4.93 | 144,072 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 242,879 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 198,268 |
| Countries with W | 0 | - | 4.97 | 131,767 |
| Countries with Z | 0 | - | 4.98 | 273,367 |
| Countries with Letters Missing | 0 | - | 4.97 | 175,079 |
| Countries That End in U | 0 | - | 4.95 | 113,174 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 98,559 |
| Countries that End in O | 0 | - | 4.92 | 152,879 |
| Countries that End in R | 0 | - | 4.84 | 99,364 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 151,007 |
| Countries Ending in "IA" | 0 | - | 4.99 | 196,108 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 162,172 |
| Countries by Last Two Letters | 0 | - | 4.89 | 120,954 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 134,472 |
| Countries That End in Y | 0 | - | 4.91 | 181,129 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 187,585 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 126,424 |
| Countries that End in I | 0 | - | 4.92 | 116,946 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 157,050 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 91,439 |
| Countries That End in NIA | 0 | - | 4.92 | 104,450 |
| Countries That End in BIA | 0 | - | 4.92 | 141,481 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 159,982 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 113,878 |
| Countries That End in RIA | 0 | - | 4.89 | 104,804 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 104,951 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 212,801 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 125,954 |
| Divided Country Name Puzzle #3 | 0 | - | 4.91 | 117,621 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 83,626 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 70,640 |
| Countries With One Word and Three A's | 0 | - | 4.93 | 47,765 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 96,831 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 118,955 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 45,665 |
| Countries with the Word "And" | 0 | - | 4.98 | 88,788 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 46,554 |
| Countries that End in L | 0 | - | 4.94 | 150,910 |
| "Land" Countries | 0 | - | 4.98 | 298,289 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 195,666 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 83,710 |
| City to Country Quiz #1 | 0 | - | 4.95 | 138,110 |
| City to Country Quiz #3 | 0 | - | 4.87 | 103,012 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 74,761 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 217,580 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 191,150 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 121,384 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 139,361 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 214,170 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 146,084 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 68,385 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 105,359 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 84,535 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 59,240 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,368,842 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 361,884 |
| One Border Countries | 0 | - | 4.97 | 427,054 |
| Top-Producing Countries | 0 | - | 4.69 | 102,253 |
| Country Codes Quiz | 0 | - | 4.45 | 80,218 |
| Countries on the Equator | 0 | - | 4.74 | 136,939 |
| Members of the Arab League | 0 | - | 4.78 | 74,432 |
| Separatist Movements | 0 | - | 4.46 | 44,145 |
| Prime Meridian Countries | 0 | - | 4.69 | 58,423 |
| Next Country Alphabetically | 0 | - | 4.73 | 83,083 |
| Westernmost Countries | 0 | - | 4.49 | 48,563 |
| Easternmost Countries | 0 | - | 4.71 | 61,552 |
| Countries With the Most ISIS Fighters | 0 | - | 4.53 | 38,371 |
| Top 10 Most Famous Island Countries | 0 | - | 4.68 | 103,146 |
| Indochina Countries | 0 | - | 4.70 | 64,373 |
| Atlantic Ocean Island Countries | 0 | - | 4.55 | 63,891 |
| Countries With the Most Conflict Deaths | 0 | - | 4.65 | 93,770 |
| Highest Foreign Aid Recipients | 0 | - | 4.64 | 43,242 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 47,083 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 44,294 |
| Countries that are the Source of Refugees | 0 | - | 4.65 | 58,616 |
| Countries 206 to 242 | 0 | - | 4.71 | 32,319 |
| Most Populous Countries By Category | 0 | - | 4.55 | 63,490 |
| Countries with the Most Turkic People | 0 | - | 4.78 | 43,773 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.78 | 59,288 |
| Flyover Countries | 0 | - | 4.64 | 49,015 |
| Top 50 Countries by Area - In Order | 0 | - | 4.75 | 70,077 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 38,702 |
