| Axis Occupied Countries of WWII | 0 | - | 4.99 | 206,603 |
| Countries in World War I | 0 | - | 4.89 | 208,356 |
| Battle to Country | 0 | - | 4.92 | 34,890 |
| Important Cities in WWII | 0 | - | 4.48 | 82,702 |
| Independence from Whom | 0 | - | 4.99 | 183,856 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 112,301 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 48,772 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 76,928 |
| Communist Countries in History | 0 | - | 4.65 | 451,954 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 143,726 |
| Countries of the World in 1900 | 0 | - | 4.88 | 65,117 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 168,904 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 126,398 |
| Countries by Former Name | 0 | - | 4.99 | 109,983 |
| Historical City to Country | 0 | - | 4.83 | 71,937 |
| Cities Bombed During WWII | 0 | - | 4.09 | 26,882 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,506,470 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 221,039 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.76 | 57,243 |
| WWII First Names | 0 | - | 4.46 | 38,449 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 108,906 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 68,235 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 75,692 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,363 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 66,604 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 86,341 |
| Countries Settled by Vikings | 0 | - | 4.93 | 110,840 |
| Countries with the Most Christians | 0 | - | 4.93 | 106,251 |
| Warsaw Pact Countries | 0 | - | 4.85 | 79,850 |
| Least Christian Countries with Exceptions | 0 | - | 4.89 | 71,662 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 86,143 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 161,211 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 317,998 |
| Countries with the Most Catholics | 0 | - | 4.91 | 92,066 |
| Orthodox Countries | 0 | - | 4.91 | 116,172 |
| Countries that Have Won the Most Battles | 0 | - | 4.07 | 35,850 |
| Flags of Countries of the World in 1910 | 0 | - | 4.95 | 68,238 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,023,727 |
| Monarchies of Europe | 0 | - | 4.88 | 86,337 |
| Monarchies of Asia | 0 | - | 4.95 | 53,631 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 97,195 |
| World Leaders of the World Wars | 0 | - | 4.40 | 34,197 |
| Biggest Spanish Empire Countries | 0 | - | 4.90 | 92,019 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 176,880 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 108,776 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 100,832 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 80,491 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 180,078 |
| Top 10 Hottest European Countries | 0 | - | 4.87 | 114,891 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 116,145 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,789 |
| Countries by Independence Day Quiz | 0 | - | 4.64 | 44,345 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 352,101 |
| Countries on the Equator | 0 | - | 4.82 | 132,833 |
| Members of the Arab League | 0 | - | 4.82 | 59,451 |
| Island Countries Quiz | 0 | - | 4.99 | 639,098 |
| Sahara Desert Countries | 0 | - | 4.97 | 125,270 |
| Himalayan Countries | 0 | - | 4.95 | 102,620 |
| Andean Countries | 0 | - | 4.90 | 57,018 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 57,865 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,616 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 101,944 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,581 |
| Former Countries by Capital | 0 | - | 4.45 | 103,381 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,779 |
| Danube Countries | 0 | - | 4.97 | 56,374 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,425 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,619 |
| Countries with the Best Passports | 0 | - | 4.87 | 70,413 |
| Countries with the Worst Passports | 0 | - | 4.87 | 48,830 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,452 |
| European Landlocked Countries | 0 | - | 4.99 | 114,861 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,808 |
| Countries with the Most Species | 0 | - | 4.99 | 89,099 |
| Countries 197 to 205 | 0 | - | 4.88 | 55,874 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,460 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,830 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,800 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,145 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 58,477 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,721 |
| Countries in the Alps | 0 | - | 4.82 | 101,896 |
| Former Countries | 0 | - | 4.71 | 123,639 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,712 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 85,896 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,156 |
| Guerrillas by Country | 0 | - | 4.45 | 38,304 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,774 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,415 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,105 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,098 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,787 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,084 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,206 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 68,948 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,346 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,432 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,020 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,539 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,019 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,729 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 60,984 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 52,990 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 193,055 |
| World Countries - Blind Typing | 0 | - | 5.00 | 71,522 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 41,988 |
| Largest Countries By Category | 0 | - | 4.96 | 143,975 |
| Countries by Countries | 0 | - | 4.96 | 54,137 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 66,816 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,404 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 77,431 |
| Biggest Countries by Area | 0 | - | 5.00 | 925,542 |
| Northernmost Countries | 0 | - | 4.99 | 325,475 |
| Political Movements by Country | 0 | - | 4.47 | 68,223 |
| Countries of South America | 0 | - | 5.00 | 784,470 |
| Countries of Oceania | 0 | - | 5.00 | 883,095 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,113,066 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,553,716 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.87 | 67,388 |
| Top 10 Richest Countries in Asia | 0 | - | 4.88 | 76,588 |
| Top 10 Richest Countries in Africa | 0 | - | 4.87 | 67,029 |
| Top 10 Richest Countries in Europe | 0 | - | 4.88 | 133,897 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 66,877 |
| Biggest Trading Partners - European Union | 0 | - | 4.90 | 64,251 |
| Deadliest U.S. Wars | 0 | - | 4.82 | 157,022 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,303,051 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,709 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,312 |
| Countries with Megacities | 0 | - | 4.99 | 194,985 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,642 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,957 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,824 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,806 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,322 |
| Countries by Official Language | 0 | - | 4.95 | 153,600 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 246,988 |
| Countries in their Native Language | 0 | - | 4.98 | 177,102 |
| Subdivisions by Country | 0 | - | 4.82 | 46,205 |
| Megadiverse Countries | 0 | - | 4.96 | 124,815 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 90,079 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 106,059 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,147 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 130,165 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,360 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,543 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 40,999 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 43,059 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,859 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,400 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,515 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 67,975 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,790 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,037,979 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 80,327 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,820 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 87,618 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,455 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,191 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,143 |
| Countries With the Most Languages | 0 | - | 4.90 | 171,760 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.92 | 86,615 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 70,936 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,546 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,361 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,898 |
| Widest Countries East to West | 0 | - | 4.93 | 118,783 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,692 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 157,975 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,133 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,851 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 118,167 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,581 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,275 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,875 |
| Countries with Double Letters | 0 | - | 4.96 | 67,091 |
| Countries that End in N | 0 | - | 4.94 | 131,544 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 228,021 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 185,799 |
| Countries with W | 0 | - | 4.97 | 121,808 |
| Countries with Z | 0 | - | 4.98 | 242,710 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,721 |
| Countries That End in U | 0 | - | 4.94 | 107,038 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 88,442 |
| Countries that End in O | 0 | - | 4.92 | 146,468 |
| Countries that End in R | 0 | - | 4.86 | 96,161 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,914 |
| Countries Ending in "IA" | 0 | - | 4.99 | 169,710 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 154,956 |
| Countries by Last Two Letters | 0 | - | 4.90 | 115,647 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 128,582 |
| Countries That End in Y | 0 | - | 4.90 | 160,847 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 159,757 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 119,923 |
| Countries that End in I | 0 | - | 4.92 | 114,201 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 148,542 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 87,858 |
| Countries That End in NIA | 0 | - | 4.93 | 100,375 |
| Countries That End in BIA | 0 | - | 4.91 | 125,434 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 152,472 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,118 |
