| Countries in World War I | 0 | - | 4.88 | 229,499 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,812 |
| Battle to Country | 0 | - | 4.91 | 54,145 |
| Independence from Whom | 0 | - | 4.99 | 213,485 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,731 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,944 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,349 |
| Countries by Founding Story | 0 | - | 4.95 | 77,932 |
| Recently Independent Countries | 0 | - | 4.98 | 160,558 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,232 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 197,171 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,564 |
| Countries by Former Name | 0 | - | 4.99 | 126,012 |
| Historical City to Country | 0 | - | 4.85 | 79,109 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,994,026 |
| Countries in World War II | 0 | - | 4.55 | 920,579 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,683 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 136,049 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,634 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,305 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,586 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,945 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,901 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,203 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,996 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,859 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 89,386 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,802 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,820 |
| Political Movements by Country | 0 | - | 4.46 | 72,844 |
| Landlocked Countries | 0 | - | 4.99 | 427,564 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,814,635 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,402 |
| National Founders | 0 | - | 4.40 | 84,003 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,688 |
| Orthodox Countries | 0 | - | 4.92 | 133,000 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,634 |
| Monarchies of Europe | 0 | - | 4.90 | 99,063 |
| Monarchies of Asia | 0 | - | 4.97 | 71,629 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,374 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,754 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,900 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,136 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,545 |
| Island Countries | 0 | - | 4.99 | 713,117 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,064 |
| Himalayan Countries | 0 | - | 4.93 | 140,957 |
| Andean Countries | 0 | - | 4.94 | 85,866 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,975 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,589 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,521 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,738 |
| Danube Countries | 0 | - | 4.97 | 72,589 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,847 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,002 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,503 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,974 |
| European Landlocked Countries | 0 | - | 4.99 | 147,808 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,580 |
| Countries with the Most Species | 0 | - | 4.99 | 103,663 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,687 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,826 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,965 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,946 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,699 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,157 |
| Countries in the Alps | 0 | - | 4.87 | 119,022 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,075 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,219 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,082 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,207 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,178 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,415 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,629 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,022 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,529 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,341 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,969 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,847 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,696 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,156 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,947 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,049 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,209 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,760 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,680 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,874 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,472 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,591 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,635 |
| Largest Countries By Category | 0 | - | 4.97 | 159,142 |
| Countries by Countries | 0 | - | 4.97 | 63,835 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 201,025 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,523 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,823 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,979 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,017 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,496 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,454 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,716 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,269 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,541 |
| Northernmost Countries | 0 | - | 4.99 | 364,755 |
| Countries of South America | 0 | - | 5.00 | 934,739 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,018 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,144 |
| "Land" Countries | 0 | - | 4.98 | 339,123 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,106 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 128,006 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,830 |
| Countries by Independence Day | 0 | - | 4.62 | 52,886 |
| Former Countries by Capital | 0 | - | 4.45 | 127,909 |
| Former Countries | 0 | - | 4.77 | 134,338 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,723 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,770 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 73,130 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.92 | 95,749 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 77,167 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,459 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,851 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,439 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,566 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,115 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,597 |
| Countries with Megacities | 0 | - | 4.99 | 268,069 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,247 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,386 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,569 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,489 |
| Countries by Official Language | 0 | - | 4.95 | 196,295 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,034 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,649 |
| Countries in their Native Language | 0 | - | 4.99 | 200,010 |
| Subdivisions by Country | 0 | - | 4.87 | 50,680 |
| Megadiverse Countries | 0 | - | 4.96 | 149,604 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,194 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,591 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,836 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,266 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,521 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,644 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,196 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,292 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,854 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,511 |
| Hindu Countries | 0 | - | 4.86 | 50,695 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,524 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,238 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,658 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,998 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,837 |
| World Map Quiz | 0 | - | 4.81 | 65,967 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,078 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,848 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,817 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 105,029 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,589 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,271 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,745 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,017 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,595 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,708 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,890 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,781 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,994 |
| Widest Countries East to West | 0 | - | 4.92 | 130,892 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,637 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,451 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,580 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,183 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,290 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,640 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,547 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,930 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 55,032 |
| Countries with Double Letters | 0 | - | 4.96 | 97,737 |
| Countries that End in N | 0 | - | 4.95 | 172,730 |
| Countries with Five Letters | 0 | - | 4.96 | 284,775 |
| Countries with Six Letters | 0 | - | 4.94 | 215,064 |
| Countries with W | 0 | - | 4.96 | 161,387 |
| Countries with Z | 0 | - | 4.98 | 293,137 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,759 |
| Countries That End in U | 0 | - | 4.95 | 121,442 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,511 |
| Countries that End in O | 0 | - | 4.92 | 160,411 |
| Countries that End in R | 0 | - | 4.87 | 119,305 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,081 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,228 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,322 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,272 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,945 |
| Countries That End in Y | 0 | - | 4.91 | 186,194 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,472 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,464 |
| Countries that End in I | 0 | - | 4.94 | 135,452 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,414 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,170 |
| Countries That End in NIA | 0 | - | 4.92 | 110,182 |
| Countries That End in BIA | 0 | - | 4.93 | 149,777 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,983 |
