| Independence from Whom | 0 | - | 4.99 | 213,568 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,772 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,967 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,385 |
| Countries by Founding Story | 0 | - | 4.95 | 77,956 |
| Landlocked Countries | 0 | - | 4.99 | 427,805 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,013,964 |
| Recently Independent Countries | 0 | - | 4.98 | 160,594 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,304 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 197,237 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,623 |
| Countries by Former Name | 0 | - | 4.99 | 126,046 |
| Historical City to Country | 0 | - | 4.85 | 79,125 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,175 |
| Himalayan Countries | 0 | - | 4.93 | 141,056 |
| Andean Countries | 0 | - | 4.94 | 85,918 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,028 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,657 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,573 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,775 |
| Danube Countries | 0 | - | 4.97 | 72,620 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,886 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,028 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,556 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,026 |
| European Landlocked Countries | 0 | - | 4.99 | 147,830 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,621 |
| Countries with the Most Species | 0 | - | 4.99 | 103,678 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,730 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,837 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,980 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,967 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,713 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,182 |
| Countries in the Alps | 0 | - | 4.87 | 119,062 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,146 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,266 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,101 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,231 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,200 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,435 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,651 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,043 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,542 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,357 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,986 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,856 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,717 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,970 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,071 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,287 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,771 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,843 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,924 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,607 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,673 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,648 |
| Largest Countries By Category | 0 | - | 4.97 | 159,207 |
| Countries by Countries | 0 | - | 4.97 | 63,865 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,540 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,464 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,722 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,657 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,609 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,302 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,816,291 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,744 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 136,078 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,650 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,332 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,595 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,963 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,919 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,226 |
| Warsaw Pact Countries | 0 | - | 4.83 | 85,021 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,858 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,856 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 58,030 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,133 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,211 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,706 |
| Island Countries | 0 | - | 4.99 | 713,256 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,844 |
| Northernmost Countries | 0 | - | 4.99 | 364,882 |
| Countries of South America | 0 | - | 5.00 | 935,066 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,534 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,895,010 |
| "Land" Countries | 0 | - | 4.98 | 339,203 |
| Former Countries by Capital | 0 | - | 4.45 | 127,923 |
| Former Countries | 0 | - | 4.77 | 134,356 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,744 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,685 |
| Countries with Megacities | 0 | - | 4.99 | 268,234 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,314 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,421 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,666 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,548 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,428 |
| Countries by Official Language | 0 | - | 4.95 | 196,350 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,112 |
| Countries in their Native Language | 0 | - | 4.99 | 200,056 |
| Subdivisions by Country | 0 | - | 4.87 | 50,684 |
| Megadiverse Countries | 0 | - | 4.96 | 149,839 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,228 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,598 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,863 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,274 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,568 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,663 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,223 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,302 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,917 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,529 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,534 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,254 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,678 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,017 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,921 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,653 |
| Battle to Country | 0 | - | 4.91 | 54,171 |
| World Map Quiz | 0 | - | 4.81 | 65,992 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,229 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,866 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,350 |
| Countries by Road Signs | 0 | - | 4.98 | 54,503 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,653 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,305 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,776 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,085 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,627 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,745 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,910 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,791 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,023 |
| Widest Countries East to West | 0 | - | 4.92 | 130,915 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,640 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,481 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,591 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,208 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,503 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,663 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,555 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,934 |
| Countries with Double Letters | 0 | - | 4.96 | 97,805 |
| Countries that End in N | 0 | - | 4.95 | 172,804 |
| Countries with Five Letters | 0 | - | 4.96 | 284,872 |
| Countries with Six Letters | 0 | - | 4.94 | 215,141 |
| Countries with W | 0 | - | 4.96 | 161,444 |
| Countries with Z | 0 | - | 4.98 | 293,197 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,816 |
| Countries That End in U | 0 | - | 4.95 | 121,465 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,568 |
| Countries that End in O | 0 | - | 4.92 | 160,430 |
| Countries that End in R | 0 | - | 4.87 | 119,319 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,090 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,283 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,760 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,307 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,992 |
| Countries That End in Y | 0 | - | 4.91 | 186,212 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,535 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,496 |
| Countries that End in I | 0 | - | 4.94 | 135,462 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,472 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,188 |
| Countries That End in NIA | 0 | - | 4.92 | 110,204 |
| Countries That End in BIA | 0 | - | 4.93 | 149,796 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 168,012 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,960 |
| Countries That End in RIA | 0 | - | 4.93 | 127,203 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,600 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,092 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,480 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 126,942 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,497 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,965 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,529 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,625 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,135 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,787 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,984 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,695 |
| Countries that End in L | 0 | - | 4.94 | 157,302 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,844 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,394 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,922 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,193 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,579 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,771 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,392 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,578 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,487 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,277 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,368 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,318 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,987 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,897 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,395 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,984 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,249 |
