| Countries in World War I | 0 | - | 4.88 | 228,595 |
| Battle to Country | 0 | - | 4.91 | 53,620 |
| Important Cities in WWII | 0 | - | 4.42 | 93,658 |
| Independence from Whom | 0 | - | 4.99 | 212,301 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,883 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,650 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,588 |
| Countries by Founding Story | 0 | - | 4.95 | 77,445 |
| Communist Countries in History | 0 | - | 4.63 | 496,893 |
| Recently Independent Countries | 0 | - | 4.98 | 159,573 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,382 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,965 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,489 |
| Countries by Former Name | 0 | - | 4.99 | 125,444 |
| Historical City to Country | 0 | - | 4.84 | 78,685 |
| Cities Bombed During WWII | 0 | - | 4.09 | 30,228 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,652,307 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,837 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 78,113 |
| WWII First Names | 0 | - | 4.44 | 41,868 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,979 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,582 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,342 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,986 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,373 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,679 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,486 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,821 |
| Countries with the Most Christians | 0 | - | 4.93 | 143,760 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,585 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,641 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,803 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,131 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,977 |
| Landlocked Countries | 0 | - | 4.99 | 422,865 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,909 |
| Orthodox Countries | 0 | - | 4.92 | 132,382 |
| Countries that Have Won the Most Battles | 0 | - | 4.01 | 39,677 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,146 |
| Monarchies of Europe | 0 | - | 4.90 | 98,449 |
| Monarchies of Asia | 0 | - | 4.97 | 71,298 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,086 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,784,921 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,112 |
| World Leaders of the World Wars | 0 | - | 4.36 | 37,939 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,388 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,973 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,895 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,955 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,479 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,435 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,357 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,548 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,386 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,787 |
| Countries by Independence Day | 0 | - | 4.62 | 52,797 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,872 |
| Island Countries | 0 | - | 4.99 | 711,361 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,956 |
| Himalayan Countries | 0 | - | 4.95 | 139,124 |
| Andean Countries | 0 | - | 4.93 | 84,849 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,069 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,180 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,653 |
| Former Countries by Capital | 0 | - | 4.45 | 127,639 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,964 |
| Danube Countries | 0 | - | 4.97 | 72,123 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,165 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,522 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,503 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,007 |
| European Landlocked Countries | 0 | - | 4.99 | 147,262 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,809 |
| Countries with the Most Species | 0 | - | 4.99 | 103,331 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,937 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,644 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,761 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,609 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,349 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,769 |
| Countries in the Alps | 0 | - | 4.87 | 118,340 |
| Former Countries | 0 | - | 4.75 | 133,992 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,677 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,246 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,738 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,695 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,616 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,029 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,788 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,588 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,237 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,943 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,704 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,584 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,314 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,554 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,623 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,119 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,388 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,648 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,228 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,416 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,391 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,300 |
| Largest Countries By Category | 0 | - | 4.97 | 158,370 |
| Countries by Countries | 0 | - | 4.96 | 63,340 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,385,861 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,841 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,813 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,319 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,531 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,589 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,771 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,987 |
| Northernmost Countries | 0 | - | 4.99 | 362,398 |
| Political Movements by Country | 0 | - | 4.46 | 72,653 |
| Countries of South America | 0 | - | 5.00 | 928,610 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,450 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,880,052 |
| "Land" Countries | 0 | - | 4.98 | 337,592 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,627 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,516 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,126 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,473 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,012 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,365 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,635 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,325 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,154 |
| Countries with Megacities | 0 | - | 4.99 | 265,201 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,976 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,616 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,236 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,690 |
| Countries by Official Language | 0 | - | 4.95 | 195,442 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,634 |
| Countries in their Native Language | 0 | - | 4.99 | 199,213 |
| Subdivisions by Country | 0 | - | 4.87 | 50,475 |
| Megadiverse Countries | 0 | - | 4.96 | 135,083 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,240 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,401 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,281 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,138 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,250 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,408 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,701 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,178 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,877 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,939 |
| Hindu Countries | 0 | - | 4.86 | 50,353 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,257 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,010 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,410 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,539 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,485 |
| World Map Quiz | 0 | - | 4.81 | 65,226 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,736 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,437 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,194 |
| Countries by Road Signs | 0 | - | 4.98 | 54,100 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,275 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,381 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,094 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,496 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,991 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,096 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,379 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,490 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,638 |
| Widest Countries East to West | 0 | - | 4.92 | 129,735 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,476 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,494 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,208 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,824 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,678 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,956 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,406 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,817 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 54,366 |
| Countries with Double Letters | 0 | - | 4.96 | 96,437 |
| Countries that End in N | 0 | - | 4.95 | 171,316 |
| Countries with Five Letters | 0 | - | 4.96 | 282,846 |
| Countries with Six Letters | 0 | - | 4.94 | 213,770 |
| Countries with W | 0 | - | 4.96 | 160,472 |
| Countries with Z | 0 | - | 4.98 | 291,680 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,836 |
| Countries That End in U | 0 | - | 4.95 | 120,923 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,604 |
| Countries that End in O | 0 | - | 4.92 | 159,578 |
| Countries that End in R | 0 | - | 4.87 | 119,014 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,770 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,282 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,787 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,562 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,471 |
| Countries That End in Y | 0 | - | 4.91 | 185,932 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,039 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,959 |
| Countries that End in I | 0 | - | 4.94 | 135,157 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,224 |
