| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,880 |
| Countries in World War I | 0 | - | 4.88 | 229,540 |
| Battle to Country | 0 | - | 4.91 | 54,177 |
| Important Cities in WWII | 0 | - | 4.42 | 94,320 |
| Independence from Whom | 0 | - | 4.99 | 213,583 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,782 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,970 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,392 |
| Countries by Founding Story | 0 | - | 4.95 | 77,961 |
| Communist Countries in History | 0 | - | 4.63 | 499,011 |
| Recently Independent Countries | 0 | - | 4.98 | 160,597 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,324 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 197,250 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,638 |
| Countries by Former Name | 0 | - | 4.99 | 126,051 |
| Historical City to Country | 0 | - | 4.85 | 79,130 |
| Cities Bombed During WWII | 0 | - | 4.09 | 30,375 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,018,004 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,691 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.78 | 78,420 |
| WWII First Names | 0 | - | 4.45 | 42,032 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,753 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 136,084 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,655 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,336 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,598 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,966 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,929 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,231 |
| Countries with the Most Christians | 0 | - | 4.93 | 145,048 |
| Warsaw Pact Countries | 0 | - | 4.83 | 85,026 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 89,438 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,873 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,863 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,433 |
| Landlocked Countries | 0 | - | 4.99 | 427,849 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,744 |
| Orthodox Countries | 0 | - | 4.92 | 133,040 |
| Countries that Have Won the Most Battles | 0 | - | 4.01 | 39,833 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,658 |
| Monarchies of Europe | 0 | - | 4.90 | 99,108 |
| Monarchies of Asia | 0 | - | 4.97 | 71,654 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,397 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,816,643 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,789 |
| World Leaders of the World Wars | 0 | - | 4.36 | 38,093 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,203 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 201,094 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,555 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,951 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 93,021 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,151 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 128,053 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,845 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,170 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,218 |
| Countries by Independence Day | 0 | - | 4.62 | 52,890 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,732 |
| Island Countries | 0 | - | 4.99 | 713,286 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,195 |
| Himalayan Countries | 0 | - | 4.93 | 141,076 |
| Andean Countries | 0 | - | 4.94 | 85,933 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,033 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,677 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,582 |
| Former Countries by Capital | 0 | - | 4.45 | 127,927 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,781 |
| Danube Countries | 0 | - | 4.97 | 72,626 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,895 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,034 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,564 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,042 |
| European Landlocked Countries | 0 | - | 4.99 | 147,839 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,631 |
| Countries with the Most Species | 0 | - | 4.99 | 103,682 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,738 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,839 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,982 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,969 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,721 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,189 |
| Countries in the Alps | 0 | - | 4.87 | 119,072 |
| Former Countries | 0 | - | 4.77 | 134,358 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,161 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,278 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,101 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,234 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,206 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,437 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,655 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,048 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,549 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,361 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,987 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,858 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,722 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,975 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,073 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,299 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,773 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,862 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,930 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,623 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,715 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,652 |
| Largest Countries By Category | 0 | - | 4.97 | 159,214 |
| Countries by Countries | 0 | - | 4.97 | 63,869 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,914 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 73,148 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,552 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,465 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,725 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,308 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,901 |
| Northernmost Countries | 0 | - | 4.99 | 364,911 |
| Political Movements by Country | 0 | - | 4.46 | 72,854 |
| Countries of South America | 0 | - | 5.00 | 935,112 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,646 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,895,174 |
| "Land" Countries | 0 | - | 4.98 | 339,212 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.92 | 95,821 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 77,195 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,505 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,870 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,457 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,109 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,457,053 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,267 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,702 |
| Countries with Megacities | 0 | - | 4.99 | 268,259 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,336 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,432 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,682 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,556 |
| Countries by Official Language | 0 | - | 4.95 | 196,359 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,120 |
| Countries in their Native Language | 0 | - | 4.99 | 200,068 |
| Subdivisions by Country | 0 | - | 4.87 | 50,686 |
| Megadiverse Countries | 0 | - | 4.96 | 149,865 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,235 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,600 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,870 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,275 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,572 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,665 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,223 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,303 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,931 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,531 |
| Hindu Countries | 0 | - | 4.86 | 50,719 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,541 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,255 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,683 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,019 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,935 |
| World Map Quiz | 0 | - | 4.81 | 65,997 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,244 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,877 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 105,078 |
| Countries by Road Signs | 0 | - | 4.98 | 54,506 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,662 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,309 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,785 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,097 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,630 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,748 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,915 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,793 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,029 |
| Widest Countries East to West | 0 | - | 4.92 | 130,919 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,640 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,487 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,592 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,211 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,510 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,667 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,555 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,934 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 55,063 |
| Countries with Double Letters | 0 | - | 4.96 | 97,815 |
| Countries that End in N | 0 | - | 4.95 | 172,811 |
| Countries with Five Letters | 0 | - | 4.96 | 284,886 |
| Countries with Six Letters | 0 | - | 4.94 | 215,152 |
| Countries with W | 0 | - | 4.96 | 161,450 |
| Countries with Z | 0 | - | 4.98 | 293,214 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,821 |
| Countries That End in U | 0 | - | 4.95 | 121,470 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,576 |
| Countries that End in O | 0 | - | 4.92 | 160,435 |
| Countries that End in R | 0 | - | 4.87 | 119,322 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,093 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,293 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,823 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,312 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,999 |
| Countries That End in Y | 0 | - | 4.91 | 186,214 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,542 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,502 |
| Countries that End in I | 0 | - | 4.94 | 135,465 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,482 |
