| Axis Occupied Countries of WWII | 0 | - | 4.99 | 226,759 |
| Countries in World War I | 0 | - | 4.88 | 225,594 |
| Battle to Country | 0 | - | 4.91 | 52,169 |
| Important Cities in WWII | 0 | - | 4.42 | 92,399 |
| Independence from Whom | 0 | - | 4.99 | 208,825 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,167 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,753 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,224 |
| Countries by Founding Story | 0 | - | 4.95 | 76,200 |
| Communist Countries in History | 0 | - | 4.63 | 491,058 |
| Recently Independent Countries | 0 | - | 4.98 | 157,103 |
| Countries of the World in 1900 | 0 | - | 4.89 | 82,823 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 192,220 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 147,998 |
| Countries by Former Name | 0 | - | 4.99 | 123,879 |
| Historical City to Country | 0 | - | 4.84 | 77,938 |
| Cities Bombed During WWII | 0 | - | 4.08 | 29,810 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,682,554 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 235,723 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,023 |
| WWII First Names | 0 | - | 4.45 | 41,444 |
| Most Populous Countries by Year | 0 | - | 4.83 | 108,698 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 133,888 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.86 | 75,014 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,322 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,342 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 72,576 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 95,865 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,125 |
| Countries with the Most Christians | 0 | - | 4.92 | 140,770 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,144 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,426 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 66,645 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,264 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,221 |
| Landlocked Countries | 0 | - | 4.99 | 410,602 |
| Countries with the Most Catholics | 0 | - | 4.90 | 107,447 |
| Orthodox Countries | 0 | - | 4.92 | 129,889 |
| Countries that Have Won the Most Battles | 0 | - | 4.03 | 39,248 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 77,628 |
| Monarchies of Europe | 0 | - | 4.89 | 96,894 |
| Monarchies of Asia | 0 | - | 4.97 | 70,374 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,231 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,692,989 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,120 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,552 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,328 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 196,615 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,111 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 112,934 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 90,794 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 191,922 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 125,739 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,339 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 321,086 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,039 |
| Countries by Independence Day | 0 | - | 4.56 | 52,547 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 399,617 |
| Island Countries | 0 | - | 4.99 | 706,180 |
| Sahara Desert Countries | 0 | - | 4.98 | 159,260 |
| Himalayan Countries | 0 | - | 4.95 | 134,291 |
| Andean Countries | 0 | - | 4.94 | 82,221 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 61,718 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 122,364 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,328 |
| Former Countries by Capital | 0 | - | 4.45 | 126,622 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,134 |
| Danube Countries | 0 | - | 4.97 | 70,596 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,250 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,210 |
| Countries with the Worst Passports | 0 | - | 4.93 | 81,809 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 146,694 |
| European Landlocked Countries | 0 | - | 4.99 | 145,407 |
| Partially Recognized Countries | 0 | - | 4.98 | 104,647 |
| Countries with the Most Species | 0 | - | 4.99 | 95,016 |
| Countries 197 to 205 | 0 | - | 4.89 | 68,740 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,073 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,239 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,723 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,316 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,626 |
| Countries in the Alps | 0 | - | 4.87 | 116,289 |
| Former Countries | 0 | - | 4.75 | 132,413 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,185 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 104,546 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,765 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,097 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 114,788 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 94,735 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,183 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,491 |
| Largest Country by Body of Water | 0 | - | 4.96 | 50,070 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,723 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,015 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 40,858 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,138 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,487 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,460 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,353 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,376 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,033 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 43,964 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 237,425 |
| World Countries - Blind Typing | 0 | - | 5.00 | 104,679 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,390 |
| Largest Countries By Category | 0 | - | 4.97 | 156,229 |
| Countries by Countries | 0 | - | 4.96 | 61,917 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,354,348 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,064 |
| Country Flags with the Most White | 0 | - | 4.87 | 136,852 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,845 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,241 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,398 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,035,509 |
| Northernmost Countries | 0 | - | 4.99 | 356,005 |
| Political Movements by Country | 0 | - | 4.46 | 72,104 |
| Countries of South America | 0 | - | 5.00 | 910,246 |
| Countries of Oceania | 0 | - | 5.00 | 1,034,576 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,837,847 |
| "Land" Countries | 0 | - | 4.98 | 332,878 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 75,885 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 74,960 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 147,742 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,431 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 71,878 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 188,401 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,429,443 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 376,078 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,299 |
| Countries with Megacities | 0 | - | 4.99 | 244,712 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,202 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,413 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 134,714 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 79,287 |
| Countries by Official Language | 0 | - | 4.95 | 192,063 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,183 |
| Countries in their Native Language | 0 | - | 4.99 | 195,859 |
| Subdivisions by Country | 0 | - | 4.86 | 49,964 |
| Megadiverse Countries | 0 | - | 4.97 | 133,664 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,184 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,773 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 124,717 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,743 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,130 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 152,613 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 94,954 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,604 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 74,914 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,018 |
| Hindu Countries | 0 | - | 4.85 | 49,275 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,272 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,318 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,458 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,728 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 107,652 |
| World Map Quiz | 0 | - | 4.81 | 62,976 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 151,066 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 105,720 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,010 |
| Countries by Road Signs | 0 | - | 4.98 | 52,690 |
| Southernmost Countries of the World | 0 | - | 4.99 | 225,701 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,551 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,419 |
| Countries With the Most Languages | 0 | - | 4.90 | 198,907 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,468 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 92,727 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 97,945 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 60,723 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,066 |
| Widest Countries East to West | 0 | - | 4.92 | 128,328 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,135 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 184,800 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,408 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,446 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,302 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,763 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 68,958 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,493 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 52,267 |
| Countries with Double Letters | 0 | - | 4.97 | 92,761 |
| Countries that End in N | 0 | - | 4.94 | 155,931 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 257,968 |
| Countries with Six Letters | 0 | - | 4.93 | 209,743 |
| Countries with W | 0 | - | 4.97 | 157,826 |
| Countries with Z | 0 | - | 4.98 | 286,785 |
| Countries with Letters Missing | 0 | - | 4.97 | 183,938 |
| Countries That End in U | 0 | - | 4.95 | 119,298 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 131,075 |
| Countries that End in O | 0 | - | 4.92 | 158,309 |
| Countries that End in R | 0 | - | 4.86 | 117,931 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,685 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,422 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 168,929 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,182 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 140,326 |
| Countries That End in Y | 0 | - | 4.90 | 185,005 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 195,848 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,291 |
| Countries that End in I | 0 | - | 4.94 | 133,875 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 181,697 |
