| Landlocked Countries Quiz | 0 | - | 4.99 | 317,663 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,475,496 |
| Countries on the Equator | 0 | - | 4.82 | 132,623 |
| Members of the Arab League | 0 | - | 4.82 | 59,328 |
| Sahara Desert Countries | 0 | - | 4.97 | 125,171 |
| Himalayan Countries | 0 | - | 4.95 | 102,517 |
| Andean Countries | 0 | - | 4.90 | 56,962 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 57,809 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,587 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 101,902 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,564 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,750 |
| Danube Countries | 0 | - | 4.97 | 56,366 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,409 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,600 |
| Countries with the Best Passports | 0 | - | 4.87 | 70,358 |
| Countries with the Worst Passports | 0 | - | 4.86 | 48,800 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,411 |
| European Landlocked Countries | 0 | - | 4.99 | 114,848 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,780 |
| Countries with the Most Species | 0 | - | 4.99 | 89,087 |
| Countries 197 to 205 | 0 | - | 4.88 | 55,844 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,446 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,823 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,769 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,125 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,463 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,700 |
| Countries in the Alps | 0 | - | 4.82 | 101,849 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,656 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 85,835 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,131 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,740 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,384 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,017 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,063 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,767 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,073 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,171 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 68,920 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,338 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,420 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 94,992 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,511 |
| Countries with the Most Grassland | 0 | - | 4.93 | 68,992 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,650 |
| Countries with the Most Climate Zones | 0 | - | 4.97 | 60,957 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 52,972 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 192,835 |
| World Countries - Blind Typing | 0 | - | 5.00 | 71,411 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 41,969 |
| Largest Countries By Category | 0 | - | 4.96 | 143,925 |
| Countries by Countries | 0 | - | 4.96 | 54,103 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,384 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 77,363 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,020,169 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,625 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 351,874 |
| Island Countries Quiz | 0 | - | 4.99 | 638,858 |
| Biggest Countries by Area | 0 | - | 5.00 | 925,015 |
| Northernmost Countries | 0 | - | 4.99 | 325,361 |
| Countries of South America | 0 | - | 5.00 | 783,904 |
| Countries of Oceania | 0 | - | 5.00 | 882,366 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,110,104 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,552,230 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,195 |
| Countries with Megacities | 0 | - | 4.99 | 194,855 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,530 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,890 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,736 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,736 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,160 |
| Countries by Official Language | 0 | - | 4.95 | 153,528 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 246,818 |
| Countries in their Native Language | 0 | - | 4.98 | 177,030 |
| Independence from Whom | 0 | - | 4.99 | 183,601 |
| Subdivisions by Country | 0 | - | 4.82 | 46,186 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 112,097 |
| Megadiverse Countries | 0 | - | 4.96 | 124,771 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 90,005 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 106,024 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,133 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 130,121 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 48,699 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 76,770 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,334 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,509 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 40,989 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 42,913 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,830 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,378 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,494 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 67,950 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,756 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 80,153 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,783 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,367 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,127 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,083 |
| Countries With the Most Languages | 0 | - | 4.90 | 171,635 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.92 | 86,572 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 70,893 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,483 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,322 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,857 |
| Widest Countries East to West | 0 | - | 4.93 | 118,737 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,683 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 157,918 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,108 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,807 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 117,670 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,534 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,263 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,866 |
| Countries with Double Letters | 0 | - | 4.96 | 66,974 |
| Countries that End in N | 0 | - | 4.94 | 131,426 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 227,890 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 185,693 |
| Countries with W | 0 | - | 4.97 | 121,706 |
| Countries with Z | 0 | - | 4.98 | 242,527 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,645 |
| Countries That End in U | 0 | - | 4.94 | 106,985 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 88,361 |
| Countries that End in O | 0 | - | 4.92 | 146,410 |
| Countries that End in R | 0 | - | 4.86 | 96,128 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,881 |
| Countries Ending in "IA" | 0 | - | 4.99 | 169,628 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 154,907 |
| Countries by Last Two Letters | 0 | - | 4.90 | 115,601 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 128,525 |
| Countries That End in Y | 0 | - | 4.90 | 160,821 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 159,687 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 119,863 |
| Countries that End in I | 0 | - | 4.92 | 114,172 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 148,468 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 87,834 |
| Countries That End in NIA | 0 | - | 4.93 | 100,343 |
| Countries That End in BIA | 0 | - | 4.91 | 125,377 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 152,403 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,071 |
| Countries That End in RIA | 0 | - | 4.89 | 100,483 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 99,779 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 198,777 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 118,678 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 109,477 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 76,403 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 91,567 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 95,950 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 42,403 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 39,827 |
| Countries that End in L | 0 | - | 4.95 | 133,393 |
| "Land" Countries | 0 | - | 4.98 | 287,960 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 187,809 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,077 |
| City to Country Quiz #1 | 0 | - | 4.94 | 133,768 |
| City to Country Quiz #3 | 0 | - | 4.86 | 99,663 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,113 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 206,278 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 157,506 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 115,707 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 131,643 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 192,042 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 139,991 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,443 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,681 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 81,900 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,551 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,302,411 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,597 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,036,144 |
| One Border Countries | 0 | - | 4.98 | 406,701 |
| Countries With One Word and Three A's | 0 | - | 4.84 | 30,229 |
| Top-Producing Countries | 0 | - | 4.71 | 99,615 |
| Country Codes Quiz | 0 | - | 4.44 | 76,632 |
| Separatist Movements | 0 | - | 4.45 | 42,400 |
| Prime Meridian Countries | 0 | - | 4.64 | 51,736 |
| Next Country Alphabetically | 0 | - | 4.75 | 68,239 |
| Westernmost Countries | 0 | - | 4.50 | 47,302 |
| Easternmost Countries | 0 | - | 4.76 | 60,217 |
| Countries With the Most ISIS Fighters | 0 | - | 4.56 | 36,848 |
| Top 10 Most Famous Island Countries | 0 | - | 4.66 | 97,764 |
| Indochina Countries | 0 | - | 4.72 | 62,541 |
| Atlantic Ocean Island Countries | 0 | - | 4.55 | 62,862 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 90,446 |
| Highest Foreign Aid Recipients | 0 | - | 4.58 | 42,253 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 54,996 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.76 | 45,747 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 42,381 |
| Countries that are the Source of Refugees | 0 | - | 4.66 | 56,092 |
| Most Populous Countries By Category | 0 | - | 4.64 | 60,994 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 41,721 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.66 | 44,611 |
| Flyover Countries | 0 | - | 4.72 | 35,659 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 66,195 |
| Countries with the Most Coral Reefs | 0 | - | 4.65 | 37,309 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 41,827 |
| Most Recent Countries to Join the United Nations | 0 | - | 4.53 | 31,714 |
| Countries by Total Area of Bordering Countries | 0 | - | 4.79 | 49,107 |
| Countries with the Most Light Pollution | 0 | - | 4.53 | 44,011 |
| Present-Day Communist Nations | 0 | - | 4.49 | 43,039 |
