| Landlocked Countries Quiz | 0 | - | 4.99 | 335,618 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,868,918 |
| Members of the Arab League | 0 | - | 4.86 | 66,738 |
| Sahara Desert Countries | 0 | - | 4.97 | 130,855 |
| Himalayan Countries | 0 | - | 4.94 | 108,795 |
| Andean Countries | 0 | - | 4.91 | 60,436 |
| Countries with the Oldest Median Age | 0 | - | 4.82 | 61,648 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 51,037 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 104,671 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,950 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 54,404 |
| Danube Countries | 0 | - | 4.96 | 57,306 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,310 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,366 |
| Countries with the Best Passports | 0 | - | 4.86 | 72,896 |
| Countries with the Worst Passports | 0 | - | 4.89 | 50,550 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 111,233 |
| European Landlocked Countries | 0 | - | 4.99 | 137,315 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,972 |
| Countries with the Most Species | 0 | - | 4.99 | 90,109 |
| Countries 197 to 205 | 0 | - | 4.87 | 57,502 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 45,071 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,370 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 49,172 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,960 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 59,188 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 50,034 |
| Countries in the Alps | 0 | - | 4.84 | 104,035 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,604 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 89,887 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,398 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,499 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 95,025 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,459 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,671 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,848 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,761 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,511 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 70,276 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 49,088 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 37,079 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,695 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,782 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,360 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 100,893 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 62,059 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 54,147 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 203,523 |
| World Countries - Blind Typing | 0 | - | 5.00 | 75,813 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,919 |
| Largest Countries By Category | 0 | - | 4.97 | 146,638 |
| Countries by Countries | 0 | - | 4.96 | 55,741 |
| Country Flags with the Most White | 0 | - | 4.91 | 126,842 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,278 |
| Country Flags With Only Two Colors | 0 | - | 4.93 | 79,813 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,185,782 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,238,459 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 345,679 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 363,597 |
| Island Countries Quiz | 0 | - | 4.99 | 669,689 |
| Biggest Countries by Area | 0 | - | 5.00 | 949,405 |
| Northernmost Countries | 0 | - | 4.99 | 331,302 |
| Countries of South America | 0 | - | 5.00 | 812,211 |
| Countries of Oceania | 0 | - | 5.00 | 916,271 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,616,282 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,403 |
| Countries with Megacities | 0 | - | 4.99 | 202,332 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,771 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 100,176 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,548 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 66,138 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,711 |
| Countries by Official Language | 0 | - | 4.96 | 175,540 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 254,025 |
| Countries in their Native Language | 0 | - | 4.98 | 180,880 |
| Independence from Whom | 0 | - | 4.99 | 189,780 |
| Subdivisions by Country | 0 | - | 4.85 | 46,965 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 115,925 |
| Megadiverse Countries | 0 | - | 4.96 | 126,918 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 94,190 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,707 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,877 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 133,530 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,996 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,846 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 146,129 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,796 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,903 |
| Countries by Sports League Revenue | 0 | - | 4.89 | 45,272 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,356 |
| Countries Furthest from the United States | 0 | - | 4.94 | 73,057 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,601 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,487 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 66,113 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 87,096 |
| World Map Quiz | 0 | - | 4.90 | 51,744 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 119,186 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 82,874 |
| Southernmost Countries of the World | 0 | - | 4.99 | 210,070 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 93,017 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 110,398 |
| Countries With the Most Languages | 0 | - | 4.90 | 178,212 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,813 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 73,238 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 88,480 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 55,214 |
| Tallest Countries North to South | 0 | - | 4.84 | 111,723 |
| Widest Countries East to West | 0 | - | 4.93 | 120,694 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,159 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 160,753 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,937 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,484 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,977 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,793 |
| Countries with the Most Desert | 0 | - | 4.92 | 106,640 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,835 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,456 |
| Countries with Double Letters | 0 | - | 4.96 | 72,705 |
| Countries that End in N | 0 | - | 4.93 | 136,951 |
| Countries with Five Letters Quiz | 0 | - | 4.97 | 234,709 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 191,246 |
| Countries with W | 0 | - | 4.97 | 126,339 |
| Countries with Z | 0 | - | 4.98 | 265,409 |
| Countries with Letters Missing | 0 | - | 4.97 | 170,187 |
| Countries That End in U | 0 | - | 4.95 | 109,909 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 93,000 |
| Countries that End in O | 0 | - | 4.92 | 149,095 |
| Countries that End in R | 0 | - | 4.85 | 97,548 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 148,488 |
| Countries Ending in "IA" | 0 | - | 4.99 | 174,647 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,976 |
| Countries by Last Two Letters | 0 | - | 4.89 | 117,894 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 130,825 |
| Countries That End in Y | 0 | - | 4.92 | 178,090 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 163,246 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 122,804 |
| Countries that End in I | 0 | - | 4.92 | 115,351 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 151,888 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,530 |
| Countries That End in NIA | 0 | - | 4.92 | 101,970 |
| Countries That End in BIA | 0 | - | 4.91 | 127,506 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 155,381 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 111,120 |
| Countries That End in RIA | 0 | - | 4.90 | 102,046 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 101,951 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 205,249 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 121,940 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 113,084 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 79,584 |
| Countries With One Word and Three A's | 0 | - | 4.93 | 43,656 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,995 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 98,342 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,822 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 42,721 |
| Countries that End in L | 0 | - | 4.95 | 136,046 |
| "Land" Countries | 0 | - | 4.98 | 292,631 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 191,493 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 82,952 |
| City to Country Quiz #1 | 0 | - | 4.95 | 135,498 |
| City to Country Quiz #3 | 0 | - | 4.87 | 101,164 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,770 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 211,401 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 171,264 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,991 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 135,115 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 196,693 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 142,740 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,700 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 103,421 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 83,357 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,489 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,331,119 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,842 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,124,178 |
| One Border Countries | 0 | - | 4.98 | 416,403 |
| Top-Producing Countries | 0 | - | 4.71 | 100,844 |
| Country Codes Quiz | 0 | - | 4.45 | 78,368 |
| Countries on the Equator | 0 | - | 4.78 | 135,288 |
| Separatist Movements | 0 | - | 4.45 | 43,218 |
| Prime Meridian Countries | 0 | - | 4.64 | 52,191 |
| Next Country Alphabetically | 0 | - | 4.75 | 81,004 |
| Westernmost Countries | 0 | - | 4.50 | 47,934 |
| Easternmost Countries | 0 | - | 4.76 | 60,844 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 37,565 |
| Top 10 Most Famous Island Countries | 0 | - | 4.71 | 100,493 |
| Indochina Countries | 0 | - | 4.72 | 63,388 |
| Atlantic Ocean Island Countries | 0 | - | 4.54 | 63,405 |
| Countries With the Most Conflict Deaths | 0 | - | 4.64 | 92,198 |
| Highest Foreign Aid Recipients | 0 | - | 4.70 | 42,741 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,529 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.75 | 46,365 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 43,366 |
| Countries that are the Source of Refugees | 0 | - | 4.69 | 57,193 |
| Most Populous Countries By Category | 0 | - | 4.57 | 62,182 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 42,668 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.66 | 45,794 |
| Flyover Countries | 0 | - | 4.66 | 47,982 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 67,899 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 37,966 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 43,232 |
