| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,386 |
| Countries in World War II | 0 | - | 4.53 | 904,401 |
| Battle to Country | 0 | - | 4.91 | 52,509 |
| Important Cities in WWII | 0 | - | 4.42 | 92,875 |
| Independence from Whom | 0 | - | 4.99 | 209,657 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,724 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,989 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,914 |
| Countries by Founding Story | 0 | - | 4.95 | 76,521 |
| Communist Countries in History | 0 | - | 4.63 | 492,478 |
| Recently Independent Countries | 0 | - | 4.98 | 157,976 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,478 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,136 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 148,826 |
| Countries by Former Name | 0 | - | 4.99 | 124,270 |
| Historical City to Country | 0 | - | 4.84 | 78,122 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,909,810 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,250 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,206 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,279 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,256 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,599 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,555 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,798 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,206 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,830 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,428 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,269 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,908 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,394 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,708 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,584 |
| Landlocked Countries | 0 | - | 4.99 | 413,489 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,021 |
| Orthodox Countries | 0 | - | 4.91 | 130,362 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,361 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,026 |
| Monarchies of Europe | 0 | - | 4.90 | 97,303 |
| Monarchies of Asia | 0 | - | 4.97 | 70,592 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,430 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,715,629 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,579 |
| Cities Bombed During WWII | 0 | - | 4.08 | 29,900 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,825 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,242 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,353 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,232 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,079 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,232 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,113 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,486 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,744 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,078 |
| Countries by Independence Day | 0 | - | 4.56 | 52,603 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,784 |
| Island Countries | 0 | - | 4.99 | 707,571 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,537 |
| Himalayan Countries | 0 | - | 4.95 | 135,313 |
| Andean Countries | 0 | - | 4.94 | 82,805 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,201 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,167 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,876 |
| Former Countries by Capital | 0 | - | 4.45 | 127,038 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,583 |
| Danube Countries | 0 | - | 4.97 | 71,067 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,744 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,525 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,447 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,370 |
| European Landlocked Countries | 0 | - | 4.99 | 145,739 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,185 |
| Countries with the Most Species | 0 | - | 4.99 | 95,235 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,321 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,197 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,365 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,950 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,569 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,943 |
| Countries in the Alps | 0 | - | 4.86 | 116,799 |
| Former Countries | 0 | - | 4.75 | 132,689 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,549 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,238 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,996 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,408 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,142 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,987 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,558 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,742 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,219 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,040 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,193 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,037 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,445 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,729 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,743 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,036 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,628 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,251 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,757 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,220 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,643 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,597 |
| Largest Countries By Category | 0 | - | 4.97 | 156,736 |
| Countries by Countries | 0 | - | 4.96 | 62,247 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,979 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,268 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,360 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,959 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,329 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,755 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,317 |
| Northernmost Countries | 0 | - | 4.99 | 357,663 |
| Political Movements by Country | 0 | - | 4.46 | 72,257 |
| Countries of South America | 0 | - | 5.00 | 914,500 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,219 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,947 |
| "Land" Countries | 0 | - | 4.98 | 333,617 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,094 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,168 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,138 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,667 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,103 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,312 |
| WWII First Names | 0 | - | 4.44 | 41,559 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,234 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,871 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,573 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,123 |
| Countries with Megacities | 0 | - | 4.99 | 246,773 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,044 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,924 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,469 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,814 |
| Countries by Official Language | 0 | - | 4.95 | 192,748 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,089 |
| Countries in their Native Language | 0 | - | 4.99 | 196,611 |
| Subdivisions by Country | 0 | - | 4.86 | 50,063 |
| Megadiverse Countries | 0 | - | 4.97 | 133,889 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,776 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,915 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,423 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,854 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,636 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,134 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,209 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,738 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,543 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,406 |
| Hindu Countries | 0 | - | 4.85 | 49,566 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,483 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,493 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,659 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,014 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,547 |
| World Map Quiz | 0 | - | 4.81 | 63,488 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,607 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,317 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,587 |
| Countries by Road Signs | 0 | - | 4.98 | 53,090 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,327 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,977 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,936 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,714 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,842 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,050 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,266 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,937 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,327 |
| Widest Countries East to West | 0 | - | 4.92 | 128,595 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,215 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,195 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,562 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,681 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,620 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,029 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,049 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,576 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 52,773 |
| Countries with Double Letters | 0 | - | 4.97 | 93,366 |
| Countries that End in N | 0 | - | 4.94 | 156,688 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,660 |
| Countries with Six Letters | 0 | - | 4.93 | 210,329 |
| Countries with W | 0 | - | 4.97 | 158,209 |
| Countries with Z | 0 | - | 4.98 | 287,843 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,534 |
| Countries That End in U | 0 | - | 4.95 | 119,508 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,520 |
| Countries that End in O | 0 | - | 4.92 | 158,544 |
| Countries that End in R | 0 | - | 4.87 | 118,266 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,855 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,994 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,307 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,481 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,999 |
| Countries That End in Y | 0 | - | 4.90 | 185,194 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,350 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,668 |
| Countries that End in I | 0 | - | 4.94 | 134,403 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,175 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,185 |
