| Landlocked Countries | 0 | - | 4.99 | 423,092 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,671,061 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,049 |
| Himalayan Countries | 0 | - | 4.94 | 139,218 |
| Andean Countries | 0 | - | 4.93 | 84,888 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,107 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,244 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,685 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,999 |
| Danube Countries | 0 | - | 4.97 | 72,141 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,202 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,550 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,545 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,058 |
| European Landlocked Countries | 0 | - | 4.99 | 147,286 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,847 |
| Countries with the Most Species | 0 | - | 4.99 | 103,353 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,972 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,649 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,769 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,625 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,372 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,793 |
| Countries in the Alps | 0 | - | 4.87 | 118,375 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,787 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,304 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,761 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,725 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,645 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,045 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,826 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,611 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,252 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,965 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,726 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,597 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,332 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,573 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,641 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,181 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,410 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,805 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,258 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,535 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,444 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,316 |
| Largest Countries By Category | 0 | - | 4.97 | 158,413 |
| Countries by Countries | 0 | - | 4.96 | 63,367 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,859 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,328 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,592 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,798 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,786,509 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,587 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,865 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,037 |
| Island Countries | 0 | - | 4.99 | 711,446 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,298 |
| Northernmost Countries | 0 | - | 4.99 | 362,531 |
| Countries of South America | 0 | - | 5.00 | 928,920 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,861 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,880,804 |
| "Land" Countries | 0 | - | 4.98 | 337,650 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,234 |
| Countries with Megacities | 0 | - | 4.99 | 265,356 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,051 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,651 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,300 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,722 |
| Countries by Official Language | 0 | - | 4.95 | 195,483 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,694 |
| Countries in their Native Language | 0 | - | 4.99 | 199,258 |
| Independence from Whom | 0 | - | 4.99 | 212,351 |
| Subdivisions by Country | 0 | - | 4.87 | 50,485 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,925 |
| Megadiverse Countries | 0 | - | 4.96 | 135,101 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,290 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,421 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,298 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,142 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,277 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,665 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,623 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,419 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,711 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,185 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,922 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,956 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,274 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,015 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,432 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,552 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,386,479 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,566 |
| World Map Quiz | 0 | - | 4.81 | 65,261 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,865 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,460 |
| Countries by Founding Story | 0 | - | 4.95 | 77,461 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,323 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,420 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,126 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,604 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,020 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,131 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,403 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,500 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,655 |
| Widest Countries East to West | 0 | - | 4.92 | 129,757 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,481 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,553 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,392 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,847 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,710 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,979 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,417 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,822 |
| Countries with Double Letters | 0 | - | 4.96 | 96,495 |
| Countries that End in N | 0 | - | 4.95 | 171,390 |
| Countries with Five Letters | 0 | - | 4.96 | 282,948 |
| Countries with Six Letters | 0 | - | 4.94 | 213,826 |
| Countries with W | 0 | - | 4.96 | 160,520 |
| Countries with Z | 0 | - | 4.98 | 291,743 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,874 |
| Countries That End in U | 0 | - | 4.95 | 120,950 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,647 |
| Countries that End in O | 0 | - | 4.92 | 159,605 |
| Countries that End in R | 0 | - | 4.87 | 119,030 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,794 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,331 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,831 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,585 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,499 |
| Countries That End in Y | 0 | - | 4.91 | 185,948 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,068 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,994 |
| Countries that End in I | 0 | - | 4.94 | 135,173 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,257 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,885 |
| Countries That End in NIA | 0 | - | 4.92 | 109,861 |
| Countries That End in BIA | 0 | - | 4.93 | 149,311 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,223 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,529 |
| Countries That End in RIA | 0 | - | 4.93 | 126,885 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,128 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,909 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,856 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,285 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,842 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,644 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,119 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,471 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,633 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,498 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,421 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,112 |
| Countries that End in L | 0 | - | 4.94 | 156,929 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,308 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,291 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,101 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,031 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,073 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,950 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,814 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,237 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,956 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,616 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,971 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,141 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,737 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,034 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,450,021 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,418 |
| One Border Countries | 0 | - | 4.98 | 470,503 |
| Top Producing Countries | 0 | - | 4.63 | 116,305 |
| ISO Country Codes | 0 | - | 4.49 | 91,458 |
| Countries on the Equator | 0 | - | 4.63 | 141,066 |
| Members of the Arab League | 0 | - | 4.77 | 75,663 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,972 |
| Separatist Movements | 0 | - | 4.45 | 45,942 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,364 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,857 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,324 |
| Westernmost Countries | 0 | - | 4.43 | 62,486 |
| Easternmost Countries | 0 | - | 4.74 | 63,017 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,705 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,778 |
| Indochina Countries | 0 | - | 4.74 | 66,256 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,659 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,410 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,995 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,131 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,441 |
| Countries with More Sheep than People | 0 | - | 4.48 | 31,666 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,763 |
| Countries that are the Source of Refugees | 0 | - | 4.78 | 74,153 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,004 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,530 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,765 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,661 |
| Flyover Countries | 0 | - | 4.69 | 50,898 |
