| Landlocked Countries | 0 | - | 4.99 | 416,392 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,142,720 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,807 |
| Himalayan Countries | 0 | - | 4.95 | 136,390 |
| Andean Countries | 0 | - | 4.95 | 83,427 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,693 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,917 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,376 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,981 |
| Danube Countries | 0 | - | 4.97 | 71,372 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,169 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,828 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,102 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,053 |
| European Landlocked Countries | 0 | - | 4.99 | 146,100 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,716 |
| Countries with the Most Species | 0 | - | 4.99 | 100,773 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,856 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,315 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,493 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,134 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,791 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,163 |
| Countries in the Alps | 0 | - | 4.86 | 117,296 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,875 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,828 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,235 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,715 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,787 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,228 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,957 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,975 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,783 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,311 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,341 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,194 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,700 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,972 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,988 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,660 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,873 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,407 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,207 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,849 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,500 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,799 |
| Largest Countries By Category | 0 | - | 4.97 | 157,218 |
| Countries by Countries | 0 | - | 4.96 | 62,566 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,846 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,070 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,406 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,060 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,738,676 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,609 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,719 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,575 |
| Island Countries | 0 | - | 4.99 | 708,732 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,012 |
| Northernmost Countries | 0 | - | 4.99 | 359,233 |
| Countries of South America | 0 | - | 5.00 | 919,317 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,199 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,801 |
| "Land" Countries | 0 | - | 4.98 | 334,467 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,200 |
| Countries with Megacities | 0 | - | 4.99 | 248,788 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,052 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,510 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,427 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,458 |
| Countries by Official Language | 0 | - | 4.95 | 193,932 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,428 |
| Countries in their Native Language | 0 | - | 4.99 | 197,557 |
| Independence from Whom | 0 | - | 4.99 | 210,636 |
| Subdivisions by Country | 0 | - | 4.86 | 50,187 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,274 |
| Megadiverse Countries | 0 | - | 4.96 | 134,519 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,760 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,070 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,615 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,942 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,415 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,198 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,530 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,524 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,355 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,802 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,122 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,571 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,671 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,632 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,837 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,185 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,809 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,460 |
| World Map Quiz | 0 | - | 4.81 | 64,024 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,220 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,667 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,013 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,635 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,369 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,624 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,231 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,428 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,601 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,132 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,621 |
| Widest Countries East to West | 0 | - | 4.92 | 129,120 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,320 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,616 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,902 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,936 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,956 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,333 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,046 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,663 |
| Countries with Double Letters | 0 | - | 4.96 | 93,974 |
| Countries that End in N | 0 | - | 4.94 | 162,784 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,398 |
| Countries with Six Letters | 0 | - | 4.93 | 210,991 |
| Countries with W | 0 | - | 4.97 | 158,673 |
| Countries with Z | 0 | - | 4.98 | 288,592 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,948 |
| Countries That End in U | 0 | - | 4.95 | 119,815 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,080 |
| Countries that End in O | 0 | - | 4.92 | 158,790 |
| Countries that End in R | 0 | - | 4.87 | 118,466 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,002 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,652 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,690 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,768 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,339 |
| Countries That End in Y | 0 | - | 4.90 | 185,377 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,782 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,040 |
| Countries that End in I | 0 | - | 4.94 | 134,633 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,650 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,382 |
| Countries That End in NIA | 0 | - | 4.92 | 109,265 |
| Countries That End in BIA | 0 | - | 4.93 | 148,507 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,387 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,739 |
| Countries That End in RIA | 0 | - | 4.93 | 126,307 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,293 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,008 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,817 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,164 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,733 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,117 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,401 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,916 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,801 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,975 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,479 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,156 |
| Countries that End in L | 0 | - | 4.94 | 156,248 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,751 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,050 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,700 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,543 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,601 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,258 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,778 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,258 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,789 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,208 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,025 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,860 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,282 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,503 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,493 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,525 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,745 |
| One Border Countries | 0 | - | 4.98 | 466,276 |
| Top Producing Countries | 0 | - | 4.63 | 116,029 |
| ISO Country Codes | 0 | - | 4.45 | 82,260 |
| Countries on the Equator | 0 | - | 4.63 | 140,475 |
| Members of the Arab League | 0 | - | 4.77 | 75,527 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,678 |
| Separatist Movements | 0 | - | 4.44 | 45,734 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,806 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,691 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,053 |
| Westernmost Countries | 0 | - | 4.50 | 49,464 |
| Easternmost Countries | 0 | - | 4.75 | 62,735 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,542 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,140 |
| Indochina Countries | 0 | - | 4.74 | 66,026 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,556 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,060 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,915 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,008 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,270 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,520 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,691 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,802 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,133 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,508 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,365 |
| Flyover Countries | 0 | - | 4.68 | 50,648 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,577 |
