| Independence from Whom | 0 | - | 4.99 | 211,408 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,779 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,402 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,033 |
| Countries by Founding Story | 0 | - | 4.95 | 77,101 |
| Recently Independent Countries | 0 | - | 4.98 | 159,068 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,664 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,859 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,507 |
| Countries by Former Name | 0 | - | 4.99 | 124,958 |
| Historical City to Country | 0 | - | 4.84 | 78,454 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,360,485 |
| Landlocked Countries | 0 | - | 4.99 | 419,310 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,759,109 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,448 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,143 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,108 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,585 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,189 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,469 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,119 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,149 |
| Himalayan Countries | 0 | - | 4.95 | 137,569 |
| Andean Countries | 0 | - | 4.95 | 84,018 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,281 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,758 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,897 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,398 |
| Danube Countries | 0 | - | 4.97 | 71,702 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,612 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,098 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,714 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,790 |
| European Landlocked Countries | 0 | - | 4.99 | 146,813 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,182 |
| Countries with the Most Species | 0 | - | 4.99 | 102,953 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,331 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,314 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,439 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,598 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,334 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,008 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,399 |
| Countries in the Alps | 0 | - | 4.87 | 117,749 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,179 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,440 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,444 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,039 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,146 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,744 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,324 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,222 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,987 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,585 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,507 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,356 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,961 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,218 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,243 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,258 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,089 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,590 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,593 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,545 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,320 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,017 |
| Largest Countries By Category | 0 | - | 4.97 | 157,702 |
| Countries by Countries | 0 | - | 4.96 | 62,876 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,261 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,463 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,172 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,891 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,479 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,540 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,333 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,653 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,687 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,367 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,320 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,699 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,310 |
| Island Countries | 0 | - | 4.99 | 709,919 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,466 |
| Northernmost Countries | 0 | - | 4.99 | 360,641 |
| Countries of South America | 0 | - | 5.00 | 923,429 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,796 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,867,550 |
| "Land" Countries | 0 | - | 4.98 | 335,892 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,619 |
| Countries by Independence Day | 0 | - | 4.61 | 52,720 |
| Former Countries by Capital | 0 | - | 4.45 | 127,390 |
| Former Countries | 0 | - | 4.75 | 133,691 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,535 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,704 |
| Battle to Country | 0 | - | 4.91 | 53,202 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,664 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 135,470 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,133 |
| Countries with Megacities | 0 | - | 4.99 | 261,447 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,993 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,054 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,272 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,082 |
| Countries by Official Language | 0 | - | 4.95 | 194,703 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,633 |
| Countries in their Native Language | 0 | - | 4.99 | 198,251 |
| Subdivisions by Country | 0 | - | 4.86 | 50,299 |
| Megadiverse Countries | 0 | - | 4.96 | 134,792 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,592 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,205 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,768 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,028 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,748 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,863 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,508 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,000 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,071 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,738 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,012 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,802 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,173 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,344 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,296 |
| World Map Quiz | 0 | - | 4.81 | 64,647 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,768 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,068 |
| Countries by Road Signs | 0 | - | 4.98 | 53,687 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,589 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,976 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,690 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,431 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,562 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,717 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,862 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,295 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,323 |
| Widest Countries East to West | 0 | - | 4.92 | 129,412 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,390 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,994 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,011 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,548 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,266 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,585 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,252 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,732 |
| Countries with Double Letters | 0 | - | 4.97 | 95,152 |
| Countries that End in N | 0 | - | 4.95 | 170,114 |
| Countries with Five Letters | 0 | - | 4.96 | 280,611 |
| Countries with Six Letters | 0 | - | 4.94 | 212,560 |
| Countries with W | 0 | - | 4.97 | 159,555 |
| Countries with Z | 0 | - | 4.98 | 289,895 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,806 |
| Countries That End in U | 0 | - | 4.95 | 120,428 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,812 |
| Countries that End in O | 0 | - | 4.92 | 159,216 |
| Countries that End in R | 0 | - | 4.87 | 118,750 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,526 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,392 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,153 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,109 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,701 |
| Countries That End in Y | 0 | - | 4.91 | 185,657 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,285 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,467 |
| Countries that End in I | 0 | - | 4.94 | 134,888 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,145 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,596 |
| Countries That End in NIA | 0 | - | 4.92 | 109,536 |
| Countries That End in BIA | 0 | - | 4.93 | 148,873 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,765 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,094 |
| Countries That End in RIA | 0 | - | 4.93 | 126,560 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,669 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,801 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,279 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,653 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,183 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,352 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,707 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,274 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,167 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,216 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,871 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,577 |
| Countries that End in L | 0 | - | 4.94 | 156,564 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,183 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,160 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,858 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,741 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,800 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,854 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,229 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,668 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,171 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,668 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,609 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,967 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,609 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,692 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,844 |
