| Independence from Whom | 0 | - | 4.99 | 212,836 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,276 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,780 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,972 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,543 |
| Recently Independent Countries | 0 | - | 4.98 | 159,850 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,796 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,509 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,949 |
| Countries by Former Name | 0 | - | 4.99 | 125,697 |
| Historical City to Country | 0 | - | 4.85 | 78,930 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,799,326 |
| Landlocked Countries | 0 | - | 4.99 | 424,739 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,281 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,809 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,462 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,125 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,472 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,811 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,673 |
| Countries Settled by Vikings | 0 | - | 4.92 | 121,993 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,644 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,443 |
| Political Movements by Country | 0 | - | 4.46 | 72,727 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,797,761 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,459 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,176 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,735 |
| Himalayan Countries | 0 | - | 4.93 | 139,850 |
| Andean Countries | 0 | - | 4.94 | 85,223 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,395 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,707 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,960 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,265 |
| Danube Countries | 0 | - | 4.97 | 72,291 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,440 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,728 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,901 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,399 |
| European Landlocked Countries | 0 | - | 4.99 | 147,481 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,124 |
| Countries with the Most Species | 0 | - | 4.99 | 103,503 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,270 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,719 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,829 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,766 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,499 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,924 |
| Countries in the Alps | 0 | - | 4.87 | 118,627 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,388 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,644 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,890 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,917 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,843 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,153 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,280 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,787 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,354 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,086 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,803 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,674 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,467 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,704 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,795 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,568 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,536 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,603 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,518 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,282 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,900 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,445 |
| Largest Countries By Category | 0 | - | 4.97 | 158,695 |
| Countries by Countries | 0 | - | 4.96 | 63,534 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,386 |
| Battle to Country | 0 | - | 4.91 | 53,873 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,369 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,005 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,077 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,618 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,385 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,096 |
| Island Countries | 0 | - | 4.99 | 712,158 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 162,172 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,246 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,536 |
| Northernmost Countries | 0 | - | 4.99 | 363,515 |
| Countries of South America | 0 | - | 5.00 | 931,242 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,562 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,066 |
| "Land" Countries | 0 | - | 4.98 | 338,115 |
| Countries by Independence Day | 0 | - | 4.62 | 52,847 |
| Former Countries by Capital | 0 | - | 4.45 | 127,763 |
| Former Countries | 0 | - | 4.77 | 134,139 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,698 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 97,851 |
| African Countries with the Most Christians | 0 | - | 4.94 | 76,011 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,481 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,206 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 136,874 |
| Communist Countries in History | 0 | - | 4.63 | 497,728 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,644 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,103 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,871 |
| Countries with Megacities | 0 | - | 4.99 | 266,552 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,581 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,959 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,877 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,065 |
| Countries by Official Language | 0 | - | 4.95 | 195,817 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,369 |
| Countries in their Native Language | 0 | - | 4.99 | 199,600 |
| Subdivisions by Country | 0 | - | 4.87 | 50,575 |
| Megadiverse Countries | 0 | - | 4.96 | 135,210 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,797 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,491 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,397 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,196 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,473 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,519 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,783 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,229 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,291 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,324 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,385 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,112 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,527 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,647 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,092 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,609 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,041 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,975 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,456 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,304 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,310 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,432 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,632 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,631 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,326 |
| Widest Countries East to West | 0 | - | 4.92 | 130,350 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,571 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,143 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,477 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,997 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,885 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,385 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,469 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,870 |
| Countries with Double Letters | 0 | - | 4.96 | 96,853 |
| Countries that End in N | 0 | - | 4.95 | 171,739 |
| Countries with Five Letters | 0 | - | 4.96 | 283,470 |
| Countries with Six Letters | 0 | - | 4.94 | 214,213 |
| Countries with W | 0 | - | 4.96 | 160,786 |
| Countries with Z | 0 | - | 4.98 | 292,195 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,135 |
| Countries That End in U | 0 | - | 4.95 | 121,094 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,949 |
| Countries that End in O | 0 | - | 4.92 | 159,740 |
| Countries that End in R | 0 | - | 4.87 | 119,125 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,882 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,642 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,033 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,742 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,670 |
| Countries That End in Y | 0 | - | 4.91 | 186,040 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,332 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,168 |
| Countries that End in I | 0 | - | 4.94 | 135,261 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,499 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,992 |
| Countries That End in NIA | 0 | - | 4.92 | 109,982 |
| Countries That End in BIA | 0 | - | 4.93 | 149,498 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,417 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,688 |
| Countries That End in RIA | 0 | - | 4.93 | 127,001 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,287 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,355 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,061 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,498 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,064 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,757 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,251 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,516 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,805 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,595 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,297 |
| Countries that End in L | 0 | - | 4.94 | 157,055 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,373 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,324 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,067 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,697 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,325 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,275 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,037 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,367 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,165 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,859 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,137 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,207 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,796 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,174 |
