| Axis Occupied Countries of WWII | 0 | - | 4.99 | 210,034 |
| Countries in World War II | 0 | - | 4.57 | 819,764 |
| Battle to Country | 0 | - | 4.92 | 36,264 |
| Important Cities in WWII | 0 | - | 4.46 | 84,364 |
| Independence from Whom | 0 | - | 4.99 | 187,716 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,699 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,547 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 78,895 |
| Communist Countries in History | 0 | - | 4.65 | 458,697 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 145,540 |
| Countries of the World in 1900 | 0 | - | 4.87 | 67,605 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 172,275 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 129,592 |
| Countries by Former Name | 0 | - | 4.99 | 114,730 |
| Historical City to Country | 0 | - | 4.82 | 72,749 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,413,024 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 223,446 |
| Most Populous Countries by Year | 0 | - | 4.81 | 94,844 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 110,330 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 69,060 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 76,612 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,994 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 67,327 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 87,641 |
| Countries Settled by Vikings | 0 | - | 4.93 | 112,163 |
| Countries with the Most Christians | 0 | - | 4.93 | 123,018 |
| Warsaw Pact Countries | 0 | - | 4.84 | 80,490 |
| Least Christian Countries with Exceptions | 0 | - | 4.89 | 73,849 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.92 | 50,872 |
| Countries of Europe in 1444 | 0 | - | 4.93 | 87,972 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 162,894 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 330,303 |
| Countries with the Most Catholics | 0 | - | 4.91 | 94,683 |
| Orthodox Countries | 0 | - | 4.91 | 118,649 |
| Countries that Have Won the Most Battles | 0 | - | 4.05 | 36,407 |
| Flags of Countries of the World in 1910 | 0 | - | 4.95 | 69,670 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,129,300 |
| Monarchies of Europe | 0 | - | 4.88 | 87,679 |
| Monarchies of Asia | 0 | - | 4.95 | 54,482 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,196,961 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 99,501 |
| Cities Bombed During WWII | 0 | - | 4.05 | 27,364 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 94,629 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 180,655 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 110,636 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 102,733 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 82,289 |
| Top 10 Coldest European Countries | 0 | - | 4.95 | 182,135 |
| Top 10 Hottest European Countries | 0 | - | 4.87 | 116,420 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 116,977 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 343,192 |
| Countries by Independence Day Quiz | 0 | - | 4.63 | 44,622 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 359,547 |
| Members of the Arab League | 0 | - | 4.85 | 64,735 |
| Island Countries Quiz | 0 | - | 4.99 | 665,228 |
| Sahara Desert Countries | 0 | - | 4.97 | 129,018 |
| Himalayan Countries | 0 | - | 4.95 | 106,975 |
| Andean Countries | 0 | - | 4.91 | 59,498 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 60,565 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,314 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 103,682 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,571 |
| Former Countries by Capital | 0 | - | 4.44 | 104,290 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,867 |
| Danube Countries | 0 | - | 4.96 | 57,009 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,025 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,122 |
| Countries with the Best Passports | 0 | - | 4.87 | 72,105 |
| Countries with the Worst Passports | 0 | - | 4.88 | 49,983 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 110,265 |
| European Landlocked Countries | 0 | - | 4.99 | 136,585 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,391 |
| Countries with the Most Species | 0 | - | 4.99 | 89,714 |
| Countries 197 to 205 | 0 | - | 4.87 | 56,892 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,894 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,189 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,737 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,675 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,952 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,567 |
| Countries in the Alps | 0 | - | 4.84 | 103,363 |
| Former Countries | 0 | - | 4.72 | 125,204 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,971 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 88,475 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,987 |
| Guerrillas by Country | 0 | - | 4.45 | 38,748 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,046 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,524 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,011 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,175 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,517 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,545 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,111 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,872 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,832 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,881 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,222 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,386 |
| Countries with the Most Grassland | 0 | - | 4.94 | 69,944 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 99,504 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,694 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 53,779 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 199,723 |
| World Countries - Blind Typing | 0 | - | 5.00 | 74,249 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,602 |
| Largest Countries By Category | 0 | - | 4.97 | 145,816 |
| Countries by Countries | 0 | - | 4.96 | 55,198 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 67,534 |
| Country Flags with the Most White | 0 | - | 4.90 | 125,484 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,997 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,012 |
| Biggest Countries by Area | 0 | - | 5.00 | 941,065 |
| Northernmost Countries | 0 | - | 4.99 | 329,484 |
| Political Movements by Country | 0 | - | 4.46 | 68,857 |
| Countries of South America | 0 | - | 5.00 | 803,105 |
| Countries of Oceania | 0 | - | 5.00 | 905,103 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,594,781 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.88 | 69,017 |
| Top 10 Richest Countries in Asia | 0 | - | 4.87 | 82,478 |
| Top 10 Richest Countries in Africa | 0 | - | 4.87 | 68,465 |
| Top 10 Richest Countries in Europe | 0 | - | 4.88 | 136,630 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 67,868 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 65,540 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.76 | 58,805 |
| WWII First Names | 0 | - | 4.46 | 38,873 |
| Deadliest U.S. Wars | 0 | - | 4.83 | 159,212 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,321,199 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 351,621 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 127,744 |
| Countries with Megacities | 0 | - | 4.99 | 200,009 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,563 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,068 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 97,122 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 65,051 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 250,794 |
| Countries by Official Language | 0 | - | 4.96 | 174,289 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 251,439 |
| Countries in their Native Language | 0 | - | 4.98 | 179,481 |
| Subdivisions by Country | 0 | - | 4.82 | 46,715 |
| Megadiverse Countries | 0 | - | 4.96 | 126,206 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 92,601 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,184 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,652 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 132,415 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,719 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,416 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,694 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 44,524 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,982 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,622 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,173 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,054 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,692 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,095,010 |
| Countries of the World in Alphabetical Order | 0 | - | 4.99 | 84,600 |
| World Map Quiz | 0 | - | 4.91 | 50,553 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 116,325 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 82,212 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 89,938 |
| Southernmost Countries of the World | 0 | - | 4.99 | 208,652 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 91,976 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 109,231 |
| Countries With the Most Languages | 0 | - | 4.91 | 175,926 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,113 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 72,502 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 87,569 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 54,626 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,101 |
| Widest Countries East to West | 0 | - | 4.93 | 120,066 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,010 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,885 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,413 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,025 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,193 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,086 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,796 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,649 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,265 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 41,820 |
| Countries with Double Letters | 0 | - | 4.96 | 70,121 |
| Countries that End in N | 0 | - | 4.94 | 134,335 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 231,710 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 189,067 |
| Countries with W | 0 | - | 4.96 | 124,269 |
| Countries with Z | 0 | - | 4.98 | 246,377 |
| Countries with Letters Missing | 0 | - | 4.97 | 168,506 |
| Countries That End in U | 0 | - | 4.95 | 108,391 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 90,930 |
| Countries that End in O | 0 | - | 4.92 | 147,922 |
| Countries that End in R | 0 | - | 4.84 | 96,890 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,690 |
| Countries Ending in "IA" | 0 | - | 4.99 | 172,835 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 156,996 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,177 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 130,118 |
| Countries That End in Y | 0 | - | 4.90 | 162,041 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 162,143 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 121,813 |
| Countries that End in I | 0 | - | 4.92 | 114,891 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 150,694 |
