| Landlocked Countries | 0 | - | 4.99 | 415,651 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,082,641 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,430 |
| Himalayan Countries | 0 | - | 4.95 | 136,077 |
| Andean Countries | 0 | - | 4.95 | 83,224 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,544 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,706 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,229 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,872 |
| Danube Countries | 0 | - | 4.97 | 71,289 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,044 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,743 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,925 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,872 |
| European Landlocked Countries | 0 | - | 4.99 | 145,999 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,583 |
| Countries with the Most Species | 0 | - | 4.99 | 95,362 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,709 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,282 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,448 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,086 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,737 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,104 |
| Countries in the Alps | 0 | - | 4.86 | 117,165 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,790 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,651 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,175 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,612 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,417 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,165 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,840 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,915 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,717 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,232 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,285 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,155 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,642 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,908 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,916 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,524 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,818 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,363 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,078 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,436 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,285 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,748 |
| Largest Countries By Category | 0 | - | 4.97 | 157,084 |
| Countries by Countries | 0 | - | 4.96 | 62,470 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,722 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,041 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,388 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,990 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,733,186 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,076 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,987 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,948 |
| Island Countries | 0 | - | 4.99 | 708,446 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,125 |
| Northernmost Countries | 0 | - | 4.99 | 358,859 |
| Countries of South America | 0 | - | 5.00 | 918,278 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,866 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,855,366 |
| "Land" Countries | 0 | - | 4.98 | 334,170 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,993 |
| Countries with Megacities | 0 | - | 4.99 | 248,382 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,888 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,398 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,274 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,339 |
| Countries by Official Language | 0 | - | 4.95 | 193,324 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,874 |
| Countries in their Native Language | 0 | - | 4.99 | 197,127 |
| Independence from Whom | 0 | - | 4.99 | 210,237 |
| Subdivisions by Country | 0 | - | 4.86 | 50,156 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,126 |
| Megadiverse Countries | 0 | - | 4.96 | 134,479 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,295 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,030 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,563 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,919 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,919 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,150 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,396 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,472 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,313 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,790 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,996 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,532 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,639 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,603 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,812 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,137 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,367,908 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,225 |
| World Map Quiz | 0 | - | 4.81 | 63,866 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,857 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,624 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,850 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,562 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,286 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,438 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,150 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,350 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,540 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,095 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,561 |
| Widest Countries East to West | 0 | - | 4.92 | 129,052 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,297 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,531 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,663 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,888 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,873 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,266 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,856 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,650 |
| Countries with Double Letters | 0 | - | 4.96 | 93,750 |
| Countries that End in N | 0 | - | 4.94 | 157,186 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,116 |
| Countries with Six Letters | 0 | - | 4.93 | 210,775 |
| Countries with W | 0 | - | 4.97 | 158,464 |
| Countries with Z | 0 | - | 4.98 | 288,318 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,811 |
| Countries That End in U | 0 | - | 4.95 | 119,634 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,929 |
| Countries that End in O | 0 | - | 4.92 | 158,676 |
| Countries that End in R | 0 | - | 4.87 | 118,395 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,947 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,483 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,592 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,690 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,245 |
| Countries That End in Y | 0 | - | 4.90 | 185,304 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,665 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,949 |
| Countries that End in I | 0 | - | 4.94 | 134,566 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,538 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,331 |
| Countries That End in NIA | 0 | - | 4.92 | 109,159 |
| Countries That End in BIA | 0 | - | 4.92 | 147,944 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,302 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,668 |
| Countries That End in RIA | 0 | - | 4.93 | 126,221 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,209 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,817 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,722 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,066 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,631 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,050 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,322 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,829 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,729 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,919 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,386 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,042 |
| Countries that End in L | 0 | - | 4.94 | 156,181 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,334 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,028 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,653 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,485 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,549 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,086 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,689 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,953 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,706 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,109 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,962 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,837 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,255 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,474 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,443 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,404 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,490 |
| One Border Countries | 0 | - | 4.98 | 465,890 |
| Top Producing Countries | 0 | - | 4.63 | 115,990 |
| ISO Country Codes | 0 | - | 4.45 | 82,232 |
| Countries on the Equator | 0 | - | 4.63 | 140,423 |
| Members of the Arab League | 0 | - | 4.77 | 75,510 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,646 |
| Separatist Movements | 0 | - | 4.44 | 45,718 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,757 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,682 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,025 |
| Westernmost Countries | 0 | - | 4.50 | 49,457 |
| Easternmost Countries | 0 | - | 4.75 | 62,719 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,523 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,067 |
| Indochina Countries | 0 | - | 4.74 | 66,001 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,549 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,851 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,905 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,990 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,246 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,489 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,660 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,778 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,092 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,476 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,335 |
| Flyover Countries | 0 | - | 4.68 | 50,630 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,531 |
