| Independence from Whom | 0 | - | 4.99 | 182,608 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 111,654 |
| Most Recently-Settled Countries | 0 | - | 4.91 | 48,547 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 76,429 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 316,428 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,372,791 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 143,194 |
| Countries of the World in 1900 | 0 | - | 4.88 | 64,626 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 168,373 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 125,842 |
| Countries by Former Name | 0 | - | 4.98 | 92,371 |
| Historical City to Country | 0 | - | 4.82 | 71,796 |
| Countries on the Equator | 0 | - | 4.82 | 131,659 |
| Members of the Arab League | 0 | - | 4.81 | 58,780 |
| Sahara Desert Countries | 0 | - | 4.97 | 124,872 |
| Himalayan Countries | 0 | - | 4.95 | 102,167 |
| Andean Countries | 0 | - | 4.90 | 56,742 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 57,559 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,485 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 101,780 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,444 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,634 |
| Danube Countries | 0 | - | 4.97 | 56,317 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,337 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,553 |
| Countries with the Best Passports | 0 | - | 4.86 | 70,174 |
| Countries with the Worst Passports | 0 | - | 4.86 | 48,680 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,061 |
| European Landlocked Countries | 0 | - | 4.99 | 114,785 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,627 |
| Countries with the Most Species | 0 | - | 4.99 | 89,053 |
| Countries 197 to 205 | 0 | - | 4.87 | 55,691 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,400 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,770 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,677 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,053 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 58,411 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,595 |
| Countries in the Alps | 0 | - | 4.82 | 101,497 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,502 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 85,548 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,058 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,617 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,243 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 86,785 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 88,960 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,690 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,018 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,066 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 68,830 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,300 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,368 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 94,854 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,422 |
| Countries with the Most Grassland | 0 | - | 4.93 | 68,886 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,342 |
| Countries with the Most Climate Zones | 0 | - | 4.97 | 60,889 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 52,879 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 192,013 |
| World Countries - Blind Typing | 0 | - | 5.00 | 71,039 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 41,891 |
| Largest Countries By Category | 0 | - | 4.96 | 143,712 |
| Countries by Countries | 0 | - | 4.95 | 53,958 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,007,810 |
| Country Flags with the Most White | 0 | - | 4.90 | 107,487 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,319 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 77,178 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 108,717 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 68,128 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 75,558 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,275 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 66,493 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 86,184 |
| Countries Settled by Vikings | 0 | - | 4.93 | 110,653 |
| Warsaw Pact Countries | 0 | - | 4.85 | 79,740 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.90 | 47,549 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 85,877 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,134 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 351,034 |
| Island Countries Quiz | 0 | - | 4.99 | 637,443 |
| Biggest Countries by Area | 0 | - | 5.00 | 923,264 |
| Northernmost Countries | 0 | - | 4.99 | 324,993 |
| Countries of South America | 0 | - | 5.00 | 781,964 |
| Countries of Oceania | 0 | - | 5.00 | 879,704 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,100,390 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,547,526 |
| Former Countries by Capital | 0 | - | 4.45 | 103,250 |
| Former Countries | 0 | - | 4.71 | 123,438 |
| Guerrillas by Country | 0 | - | 4.45 | 38,235 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 123,892 |
| Countries with Megacities | 0 | - | 4.99 | 194,327 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,084 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,669 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,437 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,538 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 244,605 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 161,000 |
| Countries by Official Language | 0 | - | 4.95 | 153,248 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 246,135 |
| Countries in their Native Language | 0 | - | 4.98 | 176,687 |
| Subdivisions by Country | 0 | - | 4.82 | 46,131 |
| Megadiverse Countries | 0 | - | 4.96 | 124,616 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 89,720 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 105,898 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,077 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 129,629 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,208 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,418 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 40,922 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 42,705 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,730 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,263 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,447 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 67,828 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,654 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 79,679 |
| Flags of Countries of the World in 1910 | 0 | - | 4.95 | 68,031 |
| Battle to Country | 0 | - | 4.92 | 34,701 |
| World Map Quiz | 0 | - | 4.90 | 47,923 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 110,096 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,622 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,113 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 89,980 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 106,900 |
| Countries With the Most Languages | 0 | - | 4.90 | 171,222 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.92 | 86,468 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 70,744 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,301 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,186 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,709 |
| Widest Countries East to West | 0 | - | 4.93 | 118,372 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,660 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 157,743 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,047 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,673 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 117,518 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,406 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,226 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,803 |
| Countries with Double Letters | 0 | - | 4.96 | 66,352 |
| Countries that End in N | 0 | - | 4.94 | 130,746 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 227,235 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 185,055 |
| Countries with W | 0 | - | 4.97 | 121,062 |
| Countries with Z | 0 | - | 4.98 | 241,687 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,238 |
| Countries That End in U | 0 | - | 4.94 | 106,539 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.96 | 87,934 |
| Countries that End in O | 0 | - | 4.92 | 146,186 |
| Countries that End in R | 0 | - | 4.85 | 95,967 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,751 |
| Countries Ending in "IA" | 0 | - | 4.99 | 169,272 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 154,699 |
| Countries by Last Two Letters | 0 | - | 4.90 | 115,451 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 128,371 |
| Countries That End in Y | 0 | - | 4.90 | 160,714 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 159,431 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 119,647 |
| Countries that End in I | 0 | - | 4.92 | 114,079 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 148,228 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 87,723 |
| Countries That End in NIA | 0 | - | 4.93 | 100,221 |
| Countries That End in BIA | 0 | - | 4.91 | 125,200 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 152,241 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 108,919 |
| Countries That End in RIA | 0 | - | 4.89 | 100,377 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 99,619 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 198,326 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 118,463 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 109,256 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 76,167 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 91,399 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 95,773 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 42,289 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 39,612 |
| Countries that End in L | 0 | - | 4.95 | 133,226 |
| "Land" Countries | 0 | - | 4.98 | 287,635 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 187,241 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,052 |
| City to Country Quiz #1 | 0 | - | 4.94 | 133,619 |
| City to Country Quiz #3 | 0 | - | 4.86 | 99,395 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,007 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 205,932 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 156,789 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 115,564 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 131,451 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 191,791 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 139,837 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 65,373 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,396 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 81,812 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,309 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,300,346 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,185 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,029,485 |
| One Border Countries | 0 | - | 4.98 | 406,059 |
| Countries Unconquered since 1850 | 0 | - | 4.38 | 62,080 |
| Most Recent Country To ... | 0 | - | 4.34 | 51,055 |
| Biggest Spanish Empire Countries | 0 | - | 4.90 | 91,736 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 35,440 |
