| Landlocked Countries Quiz | 0 | - | 4.99 | 381,253 |
| Countries of the World Quiz | 0 | - | 5.00 | 44,215,175 |
| Sahara Desert Countries | 0 | - | 4.97 | 144,933 |
| Himalayan Countries | 0 | - | 4.95 | 121,631 |
| Andean Countries | 0 | - | 4.92 | 68,342 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 56,416 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 112,584 |
| Coffee Producing Countries | 0 | - | 4.83 | 59,609 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 59,047 |
| Danube Countries | 0 | - | 4.97 | 60,700 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 96,642 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 81,740 |
| Countries with the Best Passports | 0 | - | 4.81 | 80,129 |
| Countries with the Worst Passports | 0 | - | 4.92 | 64,207 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 137,617 |
| European Landlocked Countries | 0 | - | 4.99 | 140,858 |
| Partially Recognized Countries | 0 | - | 4.98 | 97,824 |
| Countries with the Most Species | 0 | - | 4.99 | 92,248 |
| Countries 197 to 205 | 0 | - | 4.87 | 63,246 |
| Tropic of Cancer Countries | 0 | - | 4.95 | 46,628 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 45,725 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 52,447 |
| Countries that Use the Peso | 0 | - | 4.88 | 56,175 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 69,846 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 53,516 |
| Countries in the Alps | 0 | - | 4.86 | 110,206 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 90,546 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 97,466 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 75,272 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 83,559 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 110,434 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 91,811 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 94,833 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 49,720 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 47,882 |
| Countries with the Most Container Port Traffic | 0 | - | 4.91 | 58,655 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 72,634 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 51,167 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.89 | 39,026 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 100,030 |
| Arctic Ocean Countries | 0 | - | 4.94 | 75,703 |
| Countries with the Most Grassland | 0 | - | 4.93 | 73,383 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 108,639 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 64,699 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 56,607 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 221,320 |
| World Countries - Blind Typing | 0 | - | 5.00 | 94,500 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 44,998 |
| Largest Countries By Category | 0 | - | 4.97 | 151,104 |
| Countries by Countries | 0 | - | 4.96 | 58,311 |
| Country Flags with the Most White | 0 | - | 4.87 | 131,881 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,599 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 83,747 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,398,248 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,464,283 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 359,664 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 381,655 |
| Island Countries Quiz | 0 | - | 4.99 | 689,974 |
| Biggest Countries by Area | 0 | - | 5.00 | 988,182 |
| Northernmost Countries | 0 | - | 4.99 | 342,324 |
| Countries of South America | 0 | - | 5.00 | 860,502 |
| Countries of Oceania | 0 | - | 5.00 | 973,036 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,726,211 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 158,381 |
| Countries with Megacities | 0 | - | 4.99 | 217,485 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 186,399 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 106,078 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 126,384 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 72,994 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 269,364 |
| Countries by Official Language | 0 | - | 4.95 | 183,778 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 281,634 |
| Countries in their Native Language | 0 | - | 4.98 | 188,580 |
| Independence from Whom | 0 | - | 4.99 | 199,555 |
| Subdivisions by Country | 0 | - | 4.86 | 48,481 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 123,528 |
| Megadiverse Countries | 0 | - | 4.96 | 130,374 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 121,862 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 120,782 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 49,287 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 155,291 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 59,404 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 86,331 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 148,921 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 80,337 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,386 |
| Countries by Sports League Revenue | 0 | - | 4.93 | 67,024 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 104,804 |
| Countries Furthest from the United States | 0 | - | 4.95 | 85,885 |
| Countries with the Highest HDI | 0 | - | 4.95 | 134,127 |
| Straight Shot to the Arctic Circle | 0 | - | 4.89 | 72,089 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 68,547 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,252,929 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 97,870 |
| World Map Quiz | 0 | - | 4.88 | 57,487 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 134,486 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 86,609 |
| Southernmost Countries of the World | 0 | - | 4.99 | 218,375 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 98,597 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 116,471 |
| Countries With the Most Languages | 0 | - | 4.89 | 188,939 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 92,457 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 88,469 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 93,487 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 58,285 |
| Tallest Countries North to South | 0 | - | 4.85 | 115,502 |
| Widest Countries East to West | 0 | - | 4.92 | 124,629 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 70,179 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 176,542 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 95,409 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 90,194 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 125,297 |
| Countries with the Most Desert | 0 | - | 4.93 | 123,233 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 68,010 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 33,528 |
| Countries with Double Letters | 0 | - | 4.96 | 81,688 |
| Countries that End in N | 0 | - | 4.93 | 145,600 |
| Countries with Five Letters Quiz | 0 | - | 4.97 | 245,505 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 200,113 |
| Countries with W | 0 | - | 4.97 | 132,983 |
| Countries with Z | 0 | - | 4.98 | 275,405 |
| Countries with Letters Missing | 0 | - | 4.97 | 176,192 |
| Countries That End in U | 0 | - | 4.95 | 113,964 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 99,972 |
| Countries that End in O | 0 | - | 4.92 | 154,167 |
| Countries that End in R | 0 | - | 4.84 | 99,813 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 151,822 |
| Countries Ending in "IA" | 0 | - | 4.99 | 197,902 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 163,174 |
| Countries by Last Two Letters | 0 | - | 4.87 | 121,751 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 135,506 |
| Countries That End in Y | 0 | - | 4.91 | 182,041 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 189,120 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 127,359 |
| Countries that End in I | 0 | - | 4.92 | 117,370 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 158,235 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 92,152 |
| Countries That End in NIA | 0 | - | 4.92 | 105,057 |
| Countries That End in BIA | 0 | - | 4.91 | 142,654 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 161,170 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 114,658 |
| Countries That End in RIA | 0 | - | 4.90 | 105,401 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 105,811 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 215,095 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 127,121 |
| Divided Country Name Puzzle #3 | 0 | - | 4.91 | 118,952 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 84,779 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 71,112 |
| Countries With One Word and Three A's | 0 | - | 4.94 | 48,523 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 97,607 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 119,892 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 46,199 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 47,626 |
| Countries that End in L | 0 | - | 4.94 | 151,697 |
| "Land" Countries | 0 | - | 4.98 | 299,507 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 197,419 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 83,905 |
| City to Country Quiz #1 | 0 | - | 4.96 | 150,200 |
| City to Country Quiz #3 | 0 | - | 4.87 | 104,684 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 75,545 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 219,058 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 192,286 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 122,017 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 140,780 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 215,804 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.97 | 147,102 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 68,700 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.82 | 105,944 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 84,833 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 59,732 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,379,819 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 364,413 |
| One Border Countries | 0 | - | 4.98 | 444,453 |
| Top-Producing Countries | 0 | - | 4.69 | 102,557 |
| Country Codes Quiz | 0 | - | 4.45 | 80,616 |
| Countries on the Equator | 0 | - | 4.74 | 137,441 |
| Members of the Arab League | 0 | - | 4.78 | 74,653 |
| Countries with the Oldest Median Age | 0 | - | 4.79 | 68,045 |
| Separatist Movements | 0 | - | 4.46 | 44,467 |
| Prime Meridian Countries | 0 | - | 4.69 | 58,797 |
| Next Country Alphabetically | 0 | - | 4.71 | 83,635 |
| Westernmost Countries | 0 | - | 4.49 | 48,740 |
| Easternmost Countries | 0 | - | 4.70 | 61,753 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 38,571 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 104,219 |
| Indochina Countries | 0 | - | 4.70 | 64,653 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,013 |
| Countries With the Most Conflict Deaths | 0 | - | 4.65 | 94,134 |
| Highest Foreign Aid Recipients | 0 | - | 4.64 | 43,371 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,285 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 47,274 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 51,961 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 58,974 |
| Countries 206 to 242 | 0 | - | 4.73 | 32,579 |
| Most Populous Countries By Category | 0 | - | 4.54 | 63,927 |
| Countries with the Most Turkic People | 0 | - | 4.74 | 44,086 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.75 | 59,695 |
| Flyover Countries | 0 | - | 4.64 | 49,309 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 70,652 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 38,918 |
