| Independence from Whom | 0 | - | 4.99 | 211,305 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,697 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,379 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,970 |
| Countries by Founding Story | 0 | - | 4.95 | 77,059 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,331,906 |
| Recently Independent Countries | 0 | - | 4.98 | 159,013 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,581 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,752 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,394 |
| Countries by Former Name | 0 | - | 4.99 | 124,917 |
| Historical City to Country | 0 | - | 4.84 | 78,433 |
| Landlocked Countries | 0 | - | 4.99 | 418,905 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,395 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,103 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,082 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,456 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,154 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,437 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,082 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,280 |
| 2018 News Stories - Name the Country | 0 | - | 4.42 | 23,825 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,448 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,819 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,480 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,297 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,756,656 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,982 |
| Himalayan Countries | 0 | - | 4.94 | 137,416 |
| Andean Countries | 0 | - | 4.95 | 83,929 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,226 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,643 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,829 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,348 |
| Danube Countries | 0 | - | 4.97 | 71,659 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,545 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,049 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,644 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,728 |
| European Landlocked Countries | 0 | - | 4.99 | 146,776 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,133 |
| Countries with the Most Species | 0 | - | 4.99 | 102,906 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,263 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,431 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,586 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,300 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,989 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,360 |
| Countries in the Alps | 0 | - | 4.87 | 117,684 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,130 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,360 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,418 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,979 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,089 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,536 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,281 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,183 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,966 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,549 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,476 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,337 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,920 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,187 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,204 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,178 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,061 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,571 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,529 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,356 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,224 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,995 |
| Largest Countries By Category | 0 | - | 4.97 | 157,631 |
| Countries by Countries | 0 | - | 4.96 | 62,833 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,208 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,159 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,466 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,513 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,648 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,320 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,964 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,596 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,083 |
| Island Countries | 0 | - | 4.99 | 709,739 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,013 |
| Northernmost Countries | 0 | - | 4.99 | 360,451 |
| Countries of South America | 0 | - | 5.00 | 922,875 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,932 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,231 |
| "Land" Countries | 0 | - | 4.98 | 335,785 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,587 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,625 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,669 |
| Battle to Country | 0 | - | 4.91 | 53,160 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,622 |
| Countries by Independence Day | 0 | - | 4.61 | 52,712 |
| Former Countries by Capital | 0 | - | 4.45 | 127,364 |
| Former Countries | 0 | - | 4.75 | 133,331 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,015 |
| Countries with Megacities | 0 | - | 4.99 | 259,708 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,885 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,987 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,164 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,993 |
| Countries by Official Language | 0 | - | 4.95 | 194,640 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,521 |
| Countries in their Native Language | 0 | - | 4.99 | 198,181 |
| Subdivisions by Country | 0 | - | 4.86 | 50,287 |
| Megadiverse Countries | 0 | - | 4.96 | 134,764 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,539 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,182 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,753 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,017 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,708 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,735 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,844 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,486 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,987 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,956 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,714 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,992 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,773 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,150 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,326 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,187 |
| World Map Quiz | 0 | - | 4.81 | 64,514 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,582 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,030 |
| Countries by Road Signs | 0 | - | 4.98 | 53,651 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,498 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,926 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,634 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,317 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,518 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,670 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,823 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,258 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,282 |
| Widest Countries East to West | 0 | - | 4.92 | 129,372 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,381 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,957 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,991 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,508 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,218 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,544 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,231 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,725 |
| Countries with Double Letters | 0 | - | 4.97 | 95,086 |
| Countries that End in N | 0 | - | 4.95 | 169,987 |
| Countries with Five Letters | 0 | - | 4.96 | 280,185 |
| Countries with Six Letters | 0 | - | 4.94 | 212,479 |
| Countries with W | 0 | - | 4.97 | 159,519 |
| Countries with Z | 0 | - | 4.98 | 289,796 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,741 |
| Countries That End in U | 0 | - | 4.95 | 120,411 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,749 |
| Countries that End in O | 0 | - | 4.92 | 159,192 |
| Countries that End in R | 0 | - | 4.87 | 118,734 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,510 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,329 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,102 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,077 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,660 |
| Countries That End in Y | 0 | - | 4.90 | 185,647 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,222 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,417 |
| Countries that End in I | 0 | - | 4.94 | 134,867 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,073 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,576 |
| Countries That End in NIA | 0 | - | 4.92 | 109,513 |
| Countries That End in BIA | 0 | - | 4.93 | 148,841 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,711 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,056 |
| Countries That End in RIA | 0 | - | 4.93 | 126,535 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,621 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,696 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,224 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,583 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,108 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,319 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,682 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,237 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,120 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,191 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,824 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,530 |
| Countries that End in L | 0 | - | 4.94 | 156,539 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,001 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,153 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,835 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,723 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,781 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,775 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,166 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,619 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,124 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,613 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,583 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,954 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,599 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,664 |
