| Landlocked Countries | 0 | - | 4.99 | 422,561 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,628,612 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,809 |
| Himalayan Countries | 0 | - | 4.95 | 138,987 |
| Andean Countries | 0 | - | 4.93 | 84,775 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,001 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,069 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,589 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,914 |
| Danube Countries | 0 | - | 4.97 | 72,093 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,115 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,487 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,437 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,921 |
| European Landlocked Countries | 0 | - | 4.99 | 147,224 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,758 |
| Countries with the Most Species | 0 | - | 4.99 | 103,303 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,873 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,628 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,748 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,595 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,311 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,730 |
| Countries in the Alps | 0 | - | 4.87 | 118,304 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,475 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,159 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,716 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,664 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,580 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,995 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,744 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,561 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,224 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,915 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,688 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,569 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,283 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,533 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,597 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,042 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,364 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,434 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,191 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,243 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,301 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,276 |
| Largest Countries By Category | 0 | - | 4.97 | 158,328 |
| Countries by Countries | 0 | - | 4.96 | 63,311 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,765 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,307 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,579 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,742 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,782,872 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,097 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,672 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,696 |
| Island Countries | 0 | - | 4.99 | 711,240 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,588 |
| Northernmost Countries | 0 | - | 4.99 | 362,244 |
| Countries of South America | 0 | - | 5.00 | 928,154 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,971 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,879,045 |
| "Land" Countries | 0 | - | 4.98 | 337,503 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,062 |
| Countries with Megacities | 0 | - | 4.99 | 264,958 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,888 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,570 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,153 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,641 |
| Countries by Official Language | 0 | - | 4.95 | 195,360 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,530 |
| Countries in their Native Language | 0 | - | 4.99 | 199,150 |
| Independence from Whom | 0 | - | 4.99 | 212,239 |
| Subdivisions by Country | 0 | - | 4.87 | 50,455 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,831 |
| Megadiverse Countries | 0 | - | 4.96 | 135,061 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,194 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,388 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,267 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,128 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,205 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,629 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,551 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,069 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,689 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,164 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,799 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,926 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,235 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,999 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,390 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,519 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,385,115 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,367 |
| World Map Quiz | 0 | - | 4.81 | 65,177 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,585 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,405 |
| Countries by Founding Story | 0 | - | 4.95 | 77,418 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,203 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,349 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,049 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,392 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,952 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,061 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,342 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,477 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,612 |
| Widest Countries East to West | 0 | - | 4.92 | 129,712 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,470 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,448 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,143 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,808 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,641 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,924 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,396 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,813 |
| Countries with Double Letters | 0 | - | 4.96 | 96,359 |
| Countries that End in N | 0 | - | 4.95 | 171,252 |
| Countries with Five Letters | 0 | - | 4.96 | 282,727 |
| Countries with Six Letters | 0 | - | 4.94 | 213,691 |
| Countries with W | 0 | - | 4.97 | 160,421 |
| Countries with Z | 0 | - | 4.98 | 291,603 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,784 |
| Countries That End in U | 0 | - | 4.95 | 120,892 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,545 |
| Countries that End in O | 0 | - | 4.92 | 159,547 |
| Countries that End in R | 0 | - | 4.87 | 118,996 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,761 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,214 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,752 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,522 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,442 |
| Countries That End in Y | 0 | - | 4.91 | 185,905 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,996 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,918 |
| Countries that End in I | 0 | - | 4.94 | 135,130 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,172 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,850 |
| Countries That End in NIA | 0 | - | 4.92 | 109,830 |
| Countries That End in BIA | 0 | - | 4.93 | 149,261 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,164 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,475 |
| Countries That End in RIA | 0 | - | 4.93 | 126,851 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,062 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,755 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,778 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,203 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,757 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,607 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,070 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,460 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,573 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,455 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,341 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,043 |
| Countries that End in L | 0 | - | 4.94 | 156,880 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,038 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,281 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,061 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,987 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,037 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,852 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,726 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,188 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,896 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,537 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,911 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,125 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,722 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,902 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,103 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,202 |
| One Border Countries | 0 | - | 4.98 | 470,183 |
| Top Producing Countries | 0 | - | 4.63 | 116,278 |
| ISO Country Codes | 0 | - | 4.49 | 91,394 |
| Countries on the Equator | 0 | - | 4.63 | 141,036 |
| Members of the Arab League | 0 | - | 4.77 | 75,652 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,938 |
| Separatist Movements | 0 | - | 4.45 | 45,920 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,327 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,845 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,305 |
| Westernmost Countries | 0 | - | 4.43 | 62,455 |
| Easternmost Countries | 0 | - | 4.75 | 62,990 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,686 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,722 |
| Indochina Countries | 0 | - | 4.74 | 66,235 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,651 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,392 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,990 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,120 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,427 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,740 |
| Countries that are the Source of Refugees | 0 | - | 4.80 | 73,121 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,978 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,498 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,746 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,642 |
| Flyover Countries | 0 | - | 4.69 | 50,869 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 74,051 |
