| Landlocked Countries Quiz | 0 | - | 4.99 | 331,202 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,496,982 |
| Members of the Arab League | 0 | - | 4.85 | 65,086 |
| Sahara Desert Countries | 0 | - | 4.97 | 129,301 |
| Himalayan Countries | 0 | - | 4.94 | 107,282 |
| Andean Countries | 0 | - | 4.91 | 59,675 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 60,751 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,443 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 103,823 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,633 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,957 |
| Danube Countries | 0 | - | 4.96 | 57,057 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,080 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,167 |
| Countries with the Best Passports | 0 | - | 4.87 | 72,255 |
| Countries with the Worst Passports | 0 | - | 4.89 | 50,084 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 110,380 |
| European Landlocked Countries | 0 | - | 4.99 | 136,748 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,493 |
| Countries with the Most Species | 0 | - | 4.99 | 89,759 |
| Countries 197 to 205 | 0 | - | 4.87 | 56,989 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,915 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,218 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,806 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,736 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,996 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,660 |
| Countries in the Alps | 0 | - | 4.84 | 103,486 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,099 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 88,719 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,061 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,131 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,633 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,097 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,259 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,582 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,583 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,180 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,938 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,885 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,913 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,311 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,452 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,026 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 99,770 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,762 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 53,842 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 200,396 |
| World Countries - Blind Typing | 0 | - | 5.00 | 74,533 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,665 |
| Largest Countries By Category | 0 | - | 4.97 | 145,985 |
| Countries by Countries | 0 | - | 4.96 | 55,302 |
| Country Flags with the Most White | 0 | - | 4.90 | 125,644 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,057 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,161 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,140,020 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,204,772 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 343,568 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 360,235 |
| Island Countries Quiz | 0 | - | 4.99 | 666,082 |
| Biggest Countries by Area | 0 | - | 5.00 | 942,675 |
| Northernmost Countries | 0 | - | 4.99 | 329,959 |
| Countries of South America | 0 | - | 5.00 | 804,701 |
| Countries of Oceania | 0 | - | 5.00 | 906,951 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,598,717 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 128,062 |
| Countries with Megacities | 0 | - | 4.99 | 200,443 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,931 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,256 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 97,403 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,254 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 251,362 |
| Countries by Official Language | 0 | - | 4.96 | 174,501 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 251,820 |
| Countries in their Native Language | 0 | - | 4.98 | 179,650 |
| Independence from Whom | 0 | - | 4.99 | 188,030 |
| Subdivisions by Country | 0 | - | 4.82 | 46,756 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,923 |
| Megadiverse Countries | 0 | - | 4.96 | 126,283 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 92,809 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,277 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,684 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 132,574 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,623 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,086 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,797 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,483 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,727 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 44,665 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,038 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,694 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,212 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,130 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,768 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 84,956 |
| World Map Quiz | 0 | - | 4.91 | 50,764 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 82,338 |
| Southernmost Countries of the World | 0 | - | 4.99 | 208,931 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,139 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 109,392 |
| Countries With the Most Languages | 0 | - | 4.91 | 176,335 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,370 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 72,652 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 87,734 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 54,745 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,227 |
| Widest Countries East to West | 0 | - | 4.93 | 120,184 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,036 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 160,036 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,518 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,086 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,300 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,231 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,892 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,686 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,297 |
| Countries with Double Letters | 0 | - | 4.96 | 70,935 |
| Countries that End in N | 0 | - | 4.94 | 135,162 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 232,507 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 189,668 |
| Countries with W | 0 | - | 4.96 | 124,993 |
| Countries with Z | 0 | - | 4.98 | 262,386 |
| Countries with Letters Missing | 0 | - | 4.97 | 168,925 |
| Countries That End in U | 0 | - | 4.95 | 108,938 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 91,640 |
| Countries that End in O | 0 | - | 4.92 | 148,285 |
| Countries that End in R | 0 | - | 4.85 | 97,110 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,839 |
| Countries Ending in "IA" | 0 | - | 4.99 | 173,220 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,206 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,315 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 130,265 |
| Countries That End in Y | 0 | - | 4.90 | 162,161 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 162,361 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 121,965 |
| Countries that End in I | 0 | - | 4.92 | 115,007 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 151,039 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,111 |
| Countries That End in NIA | 0 | - | 4.93 | 101,517 |
| Countries That End in BIA | 0 | - | 4.91 | 126,943 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 154,617 |
| Countries Whose Names Start with Saint | 0 | - | 4.89 | 110,578 |
| Countries That End in RIA | 0 | - | 4.90 | 101,615 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,297 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 203,472 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 121,028 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 112,103 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 78,681 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,457 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 97,679 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,413 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 41,911 |
| Countries that End in L | 0 | - | 4.95 | 135,455 |
| "Land" Countries | 0 | - | 4.98 | 291,623 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 190,747 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 79,054 |
| City to Country Quiz #1 | 0 | - | 4.94 | 135,009 |
| City to Country Quiz #3 | 0 | - | 4.86 | 100,784 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,277 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 210,161 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 169,369 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,366 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 134,271 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 195,569 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 141,859 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,369 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 102,977 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,976 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,096 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,323,018 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 352,210 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,100,191 |
| One Border Countries | 0 | - | 4.98 | 413,672 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,545 |
| Top-Producing Countries | 0 | - | 4.71 | 100,606 |
| Country Codes Quiz | 0 | - | 4.45 | 77,895 |
| Countries on the Equator | 0 | - | 4.78 | 134,935 |
| Separatist Movements | 0 | - | 4.45 | 43,008 |
| Prime Meridian Countries | 0 | - | 4.63 | 52,071 |
| Next Country Alphabetically | 0 | - | 4.75 | 80,545 |
| Westernmost Countries | 0 | - | 4.50 | 47,783 |
| Easternmost Countries | 0 | - | 4.76 | 60,692 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 37,389 |
| Top 10 Most Famous Island Countries | 0 | - | 4.71 | 99,897 |
| Indochina Countries | 0 | - | 4.72 | 63,169 |
| Atlantic Ocean Island Countries | 0 | - | 4.54 | 63,273 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 91,674 |
| Highest Foreign Aid Recipients | 0 | - | 4.70 | 42,625 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,367 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.75 | 46,198 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 43,111 |
| Countries that are the Source of Refugees | 0 | - | 4.69 | 56,912 |
| Most Populous Countries By Category | 0 | - | 4.63 | 61,893 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 42,440 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.66 | 45,491 |
| Flyover Countries | 0 | - | 4.65 | 47,720 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 67,394 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 37,793 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 42,856 |
| Most Recent Countries to Join the United Nations | 0 | - | 4.53 | 31,977 |
