| Landlocked Countries Quiz | 0 | - | 4.99 | 323,697 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,922,512 |
| Members of the Arab League | 0 | - | 4.85 | 61,865 |
| Sahara Desert Countries | 0 | - | 4.97 | 126,882 |
| Himalayan Countries | 0 | - | 4.94 | 104,748 |
| Andean Countries | 0 | - | 4.91 | 58,069 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 59,028 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,315 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,677 |
| Coffee Producing Countries | 0 | - | 4.81 | 54,022 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,283 |
| Danube Countries | 0 | - | 4.97 | 56,629 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,665 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,832 |
| Countries with the Best Passports | 0 | - | 4.88 | 71,177 |
| Countries with the Worst Passports | 0 | - | 4.87 | 49,333 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 109,507 |
| European Landlocked Countries | 0 | - | 4.99 | 115,498 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,318 |
| Countries with the Most Species | 0 | - | 4.99 | 89,524 |
| Countries 197 to 205 | 0 | - | 4.88 | 56,328 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,671 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,997 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,244 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,401 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,679 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,113 |
| Countries in the Alps | 0 | - | 4.84 | 102,602 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,280 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 87,059 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,564 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,219 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,930 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,533 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,596 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,127 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,297 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,629 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,399 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,577 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,655 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,455 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,938 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,444 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 97,967 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,314 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,362 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 196,115 |
| World Countries - Blind Typing | 0 | - | 5.00 | 72,815 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,262 |
| Largest Countries By Category | 0 | - | 4.96 | 144,849 |
| Countries by Countries | 0 | - | 4.96 | 54,619 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,686 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,165 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,070,783 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 341,070 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 355,438 |
| Island Countries Quiz | 0 | - | 4.99 | 660,452 |
| Biggest Countries by Area | 0 | - | 5.00 | 932,884 |
| Northernmost Countries | 0 | - | 4.99 | 327,116 |
| Countries of South America | 0 | - | 5.00 | 792,991 |
| Countries of Oceania | 0 | - | 5.00 | 893,371 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,151,082 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,572,086 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 125,819 |
| Countries with Megacities | 0 | - | 4.99 | 197,119 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,453 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 97,890 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 95,301 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 63,852 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 247,822 |
| Countries by Official Language | 0 | - | 4.96 | 172,069 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 249,185 |
| Countries in their Native Language | 0 | - | 4.98 | 178,271 |
| Independence from Whom | 0 | - | 4.99 | 185,530 |
| Subdivisions by Country | 0 | - | 4.82 | 46,431 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 113,416 |
| Megadiverse Countries | 0 | - | 4.96 | 125,297 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 91,364 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 106,661 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,372 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 131,552 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,132 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,855 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,098 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,026 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,341 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 43,793 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,583 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,986 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,956 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,528 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,251 |
| Countries of the World in Alphabetical Order | 0 | - | 4.99 | 82,163 |
| World Map Quiz | 0 | - | 4.90 | 49,362 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 81,470 |
| Southernmost Countries of the World | 0 | - | 4.99 | 206,738 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,908 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 108,011 |
| Countries With the Most Languages | 0 | - | 4.90 | 173,579 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 87,301 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 71,591 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 86,293 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,944 |
| Tallest Countries North to South | 0 | - | 4.84 | 110,439 |
| Widest Countries East to West | 0 | - | 4.93 | 119,357 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,819 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 158,992 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,647 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 85,579 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 118,930 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,159 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 66,455 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.82 | 32,047 |
| Countries with Double Letters | 0 | - | 4.96 | 68,406 |
| Countries that End in N | 0 | - | 4.94 | 132,744 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 229,787 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 187,071 |
| Countries with W | 0 | - | 4.96 | 122,742 |
| Countries with Z | 0 | - | 4.98 | 244,463 |
| Countries with Letters Missing | 0 | - | 4.97 | 165,405 |
| Countries That End in U | 0 | - | 4.95 | 107,582 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 89,523 |
| Countries that End in O | 0 | - | 4.92 | 146,948 |
| Countries that End in R | 0 | - | 4.85 | 96,486 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,243 |
| Countries Ending in "IA" | 0 | - | 4.99 | 171,375 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,782 |
| Countries by Last Two Letters | 0 | - | 4.91 | 116,229 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 129,295 |
| Countries That End in Y | 0 | - | 4.90 | 161,643 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 160,999 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 120,768 |
| Countries that End in I | 0 | - | 4.92 | 114,501 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 149,552 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,278 |
| Countries That End in NIA | 0 | - | 4.93 | 100,845 |
| Countries That End in BIA | 0 | - | 4.91 | 126,094 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 153,254 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,758 |
| Countries That End in RIA | 0 | - | 4.90 | 100,972 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 100,453 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 200,756 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 119,696 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 110,578 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 77,392 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 92,239 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,732 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 42,832 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 40,744 |
| Countries that End in L | 0 | - | 4.95 | 134,283 |
| "Land" Countries | 0 | - | 4.98 | 289,219 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 188,845 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.97 | 65,179 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,290 |
| City to Country Quiz #3 | 0 | - | 4.86 | 100,186 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,613 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 207,894 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 166,284 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 116,479 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 133,067 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 193,895 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,867 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,891 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 92,070 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,314 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 56,053 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,311,333 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 349,604 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,063,907 |
| One Border Countries | 0 | - | 4.98 | 410,126 |
| Countries With One Word and Three A's | 0 | - | 4.85 | 30,828 |
| Top-Producing Countries | 0 | - | 4.71 | 100,190 |
| Country Codes Quiz | 0 | - | 4.45 | 77,195 |
| Countries on the Equator | 0 | - | 4.78 | 134,282 |
| Separatist Movements | 0 | - | 4.45 | 42,674 |
| Prime Meridian Countries | 0 | - | 4.64 | 51,895 |
| Next Country Alphabetically | 0 | - | 4.76 | 68,545 |
| Westernmost Countries | 0 | - | 4.50 | 47,518 |
| Easternmost Countries | 0 | - | 4.76 | 60,435 |
| Countries With the Most ISIS Fighters | 0 | - | 4.56 | 37,071 |
| Top 10 Most Famous Island Countries | 0 | - | 4.70 | 98,501 |
| Indochina Countries | 0 | - | 4.72 | 62,820 |
| Atlantic Ocean Island Countries | 0 | - | 4.55 | 63,076 |
| Countries With the Most Conflict Deaths | 0 | - | 4.64 | 90,887 |
| Highest Foreign Aid Recipients | 0 | - | 4.58 | 42,403 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,152 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.76 | 45,952 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 42,718 |
| Countries that are the Source of Refugees | 0 | - | 4.66 | 56,467 |
| Most Populous Countries By Category | 0 | - | 4.64 | 61,418 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 42,050 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.70 | 45,040 |
| Flyover Countries | 0 | - | 4.66 | 47,111 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 66,717 |
| Countries with the Most Coral Reefs | 0 | - | 4.66 | 37,506 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 42,276 |
| Most Recent Countries to Join the United Nations | 0 | - | 4.53 | 31,833 |
| Countries by Total Area of Bordering Countries | 0 | - | 4.79 | 49,495 |
| Countries with the Most Light Pollution | 0 | - | 4.54 | 44,290 |
