| Landlocked Countries Quiz | 0 | - | 4.99 | 334,979 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,811,440 |
| Members of the Arab League | 0 | - | 4.86 | 66,515 |
| Sahara Desert Countries | 0 | - | 4.97 | 130,678 |
| Himalayan Countries | 0 | - | 4.94 | 108,620 |
| Andean Countries | 0 | - | 4.91 | 60,331 |
| Countries with the Oldest Median Age | 0 | - | 4.82 | 61,511 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,932 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 104,565 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,897 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 54,332 |
| Danube Countries | 0 | - | 4.96 | 57,265 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,269 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,326 |
| Countries with the Best Passports | 0 | - | 4.86 | 72,808 |
| Countries with the Worst Passports | 0 | - | 4.89 | 50,489 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 111,137 |
| European Landlocked Countries | 0 | - | 4.99 | 137,273 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,891 |
| Countries with the Most Species | 0 | - | 4.99 | 90,078 |
| Countries 197 to 205 | 0 | - | 4.87 | 57,430 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 45,055 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,342 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 49,119 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,921 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 59,157 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,982 |
| Countries in the Alps | 0 | - | 4.84 | 103,955 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,518 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 89,706 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,343 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,444 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,968 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,408 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,613 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,821 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,735 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,467 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 70,232 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 49,061 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 37,053 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,641 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,731 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,300 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 100,736 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 62,005 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 54,105 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 203,025 |
| World Countries - Blind Typing | 0 | - | 5.00 | 75,607 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,876 |
| Largest Countries By Category | 0 | - | 4.97 | 146,543 |
| Countries by Countries | 0 | - | 4.95 | 55,678 |
| Country Flags with the Most White | 0 | - | 4.90 | 126,645 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,249 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,722 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,178,186 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,233,046 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 345,380 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 363,077 |
| Island Countries Quiz | 0 | - | 4.99 | 669,143 |
| Biggest Countries by Area | 0 | - | 5.00 | 948,418 |
| Northernmost Countries | 0 | - | 4.99 | 331,114 |
| Countries of South America | 0 | - | 5.00 | 810,995 |
| Countries of Oceania | 0 | - | 5.00 | 914,866 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,613,679 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,205 |
| Countries with Megacities | 0 | - | 4.99 | 202,074 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,572 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 100,064 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,382 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,992 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,359 |
| Countries by Official Language | 0 | - | 4.96 | 175,378 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 253,717 |
| Countries in their Native Language | 0 | - | 4.98 | 180,750 |
| Independence from Whom | 0 | - | 4.99 | 189,559 |
| Subdivisions by Country | 0 | - | 4.84 | 46,928 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 115,766 |
| Megadiverse Countries | 0 | - | 4.96 | 126,864 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 94,059 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,635 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,852 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 133,434 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,935 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,742 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 146,085 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,760 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,874 |
| Countries by Sports League Revenue | 0 | - | 4.89 | 45,142 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,307 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,987 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,534 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,443 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 66,071 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 86,772 |
| World Map Quiz | 0 | - | 4.90 | 51,592 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 118,809 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 82,803 |
| Southernmost Countries of the World | 0 | - | 4.99 | 209,905 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,908 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 110,273 |
| Countries With the Most Languages | 0 | - | 4.90 | 177,962 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,737 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 73,150 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 88,380 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 55,157 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,645 |
| Widest Countries East to West | 0 | - | 4.93 | 120,615 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,138 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 160,639 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,878 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,457 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,911 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,714 |
| Countries with the Most Desert | 0 | - | 4.92 | 106,551 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,816 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,436 |
| Countries with Double Letters | 0 | - | 4.96 | 72,185 |
| Countries that End in N | 0 | - | 4.94 | 136,458 |
| Countries with Five Letters Quiz | 0 | - | 4.97 | 234,235 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 190,890 |
| Countries with W | 0 | - | 4.96 | 125,991 |
| Countries with Z | 0 | - | 4.98 | 265,005 |
| Countries with Letters Missing | 0 | - | 4.97 | 169,877 |
| Countries That End in U | 0 | - | 4.95 | 109,601 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 92,629 |
| Countries that End in O | 0 | - | 4.92 | 148,812 |
| Countries that End in R | 0 | - | 4.85 | 97,415 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 148,373 |
| Countries Ending in "IA" | 0 | - | 4.99 | 174,391 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,822 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,777 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 130,714 |
| Countries That End in Y | 0 | - | 4.91 | 175,256 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 163,107 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 122,469 |
| Countries that End in I | 0 | - | 4.92 | 115,264 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 151,737 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,443 |
| Countries That End in NIA | 0 | - | 4.92 | 101,881 |
| Countries That End in BIA | 0 | - | 4.91 | 127,392 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 155,254 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 111,054 |
| Countries That End in RIA | 0 | - | 4.90 | 101,949 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 101,846 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 204,786 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 121,717 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 112,877 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 79,420 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,968 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,906 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 98,249 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,742 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 42,592 |
| Countries that End in L | 0 | - | 4.95 | 135,936 |
| "Land" Countries | 0 | - | 4.98 | 292,466 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 191,366 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 82,920 |
| City to Country Quiz #1 | 0 | - | 4.95 | 135,418 |
| City to Country Quiz #3 | 0 | - | 4.87 | 101,111 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,678 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 211,228 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 171,123 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,896 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 134,997 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 196,536 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 142,636 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,647 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 103,372 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 83,312 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,430 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,329,834 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,591 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,120,196 |
| One Border Countries | 0 | - | 4.98 | 416,039 |
| Top-Producing Countries | 0 | - | 4.71 | 100,816 |
| Country Codes Quiz | 0 | - | 4.45 | 78,335 |
| Countries on the Equator | 0 | - | 4.78 | 135,229 |
| Separatist Movements | 0 | - | 4.45 | 43,170 |
| Prime Meridian Countries | 0 | - | 4.63 | 52,178 |
| Next Country Alphabetically | 0 | - | 4.75 | 80,957 |
| Westernmost Countries | 0 | - | 4.50 | 47,915 |
| Easternmost Countries | 0 | - | 4.76 | 60,824 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 37,532 |
| Top 10 Most Famous Island Countries | 0 | - | 4.71 | 100,416 |
| Indochina Countries | 0 | - | 4.72 | 63,353 |
| Atlantic Ocean Island Countries | 0 | - | 4.54 | 63,384 |
| Countries With the Most Conflict Deaths | 0 | - | 4.64 | 92,158 |
| Highest Foreign Aid Recipients | 0 | - | 4.70 | 42,717 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,504 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.75 | 46,342 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 43,326 |
| Countries that are the Source of Refugees | 0 | - | 4.69 | 57,153 |
| Most Populous Countries By Category | 0 | - | 4.57 | 62,151 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 42,640 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.66 | 45,754 |
| Flyover Countries | 0 | - | 4.65 | 47,945 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 67,832 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 37,934 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 43,174 |
