| Landlocked Countries | 0 | - | 4.99 | 423,144 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,674,594 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,065 |
| Himalayan Countries | 0 | - | 4.94 | 139,239 |
| Andean Countries | 0 | - | 4.93 | 84,897 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,120 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,263 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,694 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,014 |
| Danube Countries | 0 | - | 4.97 | 72,146 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,206 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,554 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,555 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,069 |
| European Landlocked Countries | 0 | - | 4.99 | 147,290 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,855 |
| Countries with the Most Species | 0 | - | 4.99 | 103,356 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,984 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,652 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,772 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,630 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,377 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,798 |
| Countries in the Alps | 0 | - | 4.87 | 118,379 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,809 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,312 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,764 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,730 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,647 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,049 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,833 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,616 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,253 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,972 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,726 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,599 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,336 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,577 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,648 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,193 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,417 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,846 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,262 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,551 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,458 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,322 |
| Largest Countries By Category | 0 | - | 4.97 | 158,424 |
| Countries by Countries | 0 | - | 4.96 | 63,370 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,866 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,329 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,593 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,808 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,786,865 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,623 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,876 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,062 |
| Island Countries | 0 | - | 4.99 | 711,466 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,360 |
| Northernmost Countries | 0 | - | 4.99 | 362,560 |
| Countries of South America | 0 | - | 5.00 | 928,967 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,929 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,880,958 |
| "Land" Countries | 0 | - | 4.98 | 337,665 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,246 |
| Countries with Megacities | 0 | - | 4.99 | 265,397 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,074 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,657 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,315 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,729 |
| Countries by Official Language | 0 | - | 4.95 | 195,493 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,713 |
| Countries in their Native Language | 0 | - | 4.99 | 199,275 |
| Independence from Whom | 0 | - | 4.99 | 212,359 |
| Subdivisions by Country | 0 | - | 4.87 | 50,490 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,936 |
| Megadiverse Countries | 0 | - | 4.96 | 135,104 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,300 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,422 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,299 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,144 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,281 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,666 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,631 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,422 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,714 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,186 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,934 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,959 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,279 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,017 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,438 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,555 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,386,601 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,579 |
| World Map Quiz | 0 | - | 4.81 | 65,265 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,878 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,461 |
| Countries by Founding Story | 0 | - | 4.95 | 77,463 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,333 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,424 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,136 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,617 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,030 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,142 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,408 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,504 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,660 |
| Widest Countries East to West | 0 | - | 4.92 | 129,760 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,483 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,614 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,394 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,854 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,715 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,986 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,421 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,822 |
| Countries with Double Letters | 0 | - | 4.96 | 96,507 |
| Countries that End in N | 0 | - | 4.95 | 171,405 |
| Countries with Five Letters | 0 | - | 4.96 | 282,957 |
| Countries with Six Letters | 0 | - | 4.94 | 213,837 |
| Countries with W | 0 | - | 4.96 | 160,533 |
| Countries with Z | 0 | - | 4.98 | 291,755 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,882 |
| Countries That End in U | 0 | - | 4.95 | 120,954 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,654 |
| Countries that End in O | 0 | - | 4.92 | 159,607 |
| Countries that End in R | 0 | - | 4.87 | 119,033 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,796 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,339 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,839 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,589 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,503 |
| Countries That End in Y | 0 | - | 4.91 | 185,950 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,074 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,001 |
| Countries that End in I | 0 | - | 4.94 | 135,173 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,262 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,886 |
| Countries That End in NIA | 0 | - | 4.92 | 109,862 |
| Countries That End in BIA | 0 | - | 4.93 | 149,319 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,230 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,534 |
| Countries That End in RIA | 0 | - | 4.93 | 126,891 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,134 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,917 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,858 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,294 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,847 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,646 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,127 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,471 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,635 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,506 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,429 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,120 |
| Countries that End in L | 0 | - | 4.94 | 156,931 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,329 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,292 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,103 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,032 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,079 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,955 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,818 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,241 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,963 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,622 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,976 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,143 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,739 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,052 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,450,099 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,432 |
| One Border Countries | 0 | - | 4.98 | 470,534 |
| Top Producing Countries | 0 | - | 4.63 | 116,309 |
| ISO Country Codes | 0 | - | 4.49 | 91,464 |
| Countries on the Equator | 0 | - | 4.63 | 141,068 |
| Members of the Arab League | 0 | - | 4.77 | 75,664 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,973 |
| Separatist Movements | 0 | - | 4.45 | 45,942 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,370 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,858 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,326 |
| Westernmost Countries | 0 | - | 4.43 | 62,486 |
| Easternmost Countries | 0 | - | 4.74 | 63,017 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,706 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,782 |
| Indochina Countries | 0 | - | 4.74 | 66,259 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,659 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,411 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,996 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,132 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,442 |
| Countries with More Sheep than People | 0 | - | 4.48 | 31,678 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,763 |
| Countries that are the Source of Refugees | 0 | - | 4.78 | 74,208 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,005 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,533 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,771 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,662 |
| Flyover Countries | 0 | - | 4.69 | 50,901 |
