| Landlocked Countries | 0 | - | 4.99 | 419,632 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,387,089 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,278 |
| Himalayan Countries | 0 | - | 4.95 | 137,719 |
| Andean Countries | 0 | - | 4.95 | 84,076 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,319 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,844 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,949 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,432 |
| Danube Countries | 0 | - | 4.97 | 71,730 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,655 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,126 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,771 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,856 |
| European Landlocked Countries | 0 | - | 4.99 | 146,856 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,224 |
| Countries with the Most Species | 0 | - | 4.99 | 102,993 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,385 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,453 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,615 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,363 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,039 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,431 |
| Countries in the Alps | 0 | - | 4.87 | 117,804 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,210 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,516 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,464 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,200 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,182 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,771 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,367 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,257 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,016 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,620 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,519 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,367 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,986 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,254 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,272 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,328 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,108 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,617 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,642 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,691 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,415 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,035 |
| Largest Countries By Category | 0 | - | 4.97 | 157,771 |
| Countries by Countries | 0 | - | 4.96 | 62,917 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,318 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,179 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,485 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,398 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,761,383 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,592 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,798 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,617 |
| Island Countries | 0 | - | 4.99 | 710,051 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,819 |
| Northernmost Countries | 0 | - | 4.99 | 360,810 |
| Countries of South America | 0 | - | 5.00 | 923,910 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,476 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,868,814 |
| "Land" Countries | 0 | - | 4.98 | 335,963 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,225 |
| Countries with Megacities | 0 | - | 4.99 | 262,234 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,068 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,105 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,371 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,141 |
| Countries by Official Language | 0 | - | 4.95 | 194,777 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,719 |
| Countries in their Native Language | 0 | - | 4.99 | 198,322 |
| Independence from Whom | 0 | - | 4.99 | 211,497 |
| Subdivisions by Country | 0 | - | 4.86 | 50,317 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,838 |
| Megadiverse Countries | 0 | - | 4.96 | 134,816 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,650 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,216 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,791 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,035 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,797 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,425 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,069 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,886 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,526 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,011 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,153 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,755 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,034 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,824 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,191 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,368 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,313 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,389 |
| World Map Quiz | 0 | - | 4.81 | 64,711 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,918 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,106 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,644 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,010 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,740 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,544 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,604 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,756 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,893 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,307 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,347 |
| Widest Countries East to West | 0 | - | 4.92 | 129,437 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,404 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,046 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,022 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,572 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,308 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,623 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,273 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,739 |
| Countries with Double Letters | 0 | - | 4.97 | 95,217 |
| Countries that End in N | 0 | - | 4.95 | 170,211 |
| Countries with Five Letters | 0 | - | 4.96 | 280,897 |
| Countries with Six Letters | 0 | - | 4.94 | 212,653 |
| Countries with W | 0 | - | 4.97 | 159,608 |
| Countries with Z | 0 | - | 4.98 | 290,224 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,851 |
| Countries That End in U | 0 | - | 4.95 | 120,454 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,869 |
| Countries that End in O | 0 | - | 4.92 | 159,242 |
| Countries that End in R | 0 | - | 4.87 | 118,761 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,539 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,460 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,211 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,148 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,743 |
| Countries That End in Y | 0 | - | 4.91 | 185,675 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,378 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,509 |
| Countries that End in I | 0 | - | 4.94 | 134,905 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,392 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,615 |
| Countries That End in NIA | 0 | - | 4.92 | 109,559 |
| Countries That End in BIA | 0 | - | 4.93 | 148,906 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,803 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,131 |
| Countries That End in RIA | 0 | - | 4.93 | 126,583 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,714 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,900 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,322 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,700 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,229 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,379 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,733 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,305 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,214 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,234 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,910 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,633 |
| Countries that End in L | 0 | - | 4.94 | 156,587 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,359 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,167 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,876 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,772 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,819 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,916 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,279 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,712 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,219 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,712 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,636 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,983 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,615 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,712 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,349 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,981 |
| One Border Countries | 0 | - | 4.98 | 468,066 |
| Top Producing Countries | 0 | - | 4.63 | 116,158 |
| ISO Country Codes | 0 | - | 4.45 | 82,386 |
| Countries on the Equator | 0 | - | 4.63 | 140,681 |
| Members of the Arab League | 0 | - | 4.77 | 75,591 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,812 |
| Separatist Movements | 0 | - | 4.44 | 45,844 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,099 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,768 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,181 |
| Westernmost Countries | 0 | - | 4.42 | 61,748 |
| Easternmost Countries | 0 | - | 4.75 | 62,848 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,604 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,460 |
| Indochina Countries | 0 | - | 4.74 | 66,119 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,596 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,281 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,958 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,067 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,342 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,619 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,816 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,877 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,335 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,622 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,498 |
| Flyover Countries | 0 | - | 4.68 | 50,757 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,781 |
| Countries with the Most Coral Reefs | 0 | - | 4.77 | 48,481 |
