| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,207 |
| Countries in World War II | 0 | - | 4.53 | 919,177 |
| Battle to Country | 0 | - | 4.91 | 53,995 |
| Important Cities in WWII | 0 | - | 4.42 | 93,938 |
| Independence from Whom | 0 | - | 4.99 | 213,148 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,509 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,871 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,150 |
| Countries by Founding Story | 0 | - | 4.95 | 77,831 |
| Communist Countries in History | 0 | - | 4.63 | 498,323 |
| Recently Independent Countries | 0 | - | 4.98 | 160,386 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,012 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,845 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,230 |
| Countries by Former Name | 0 | - | 4.99 | 125,866 |
| Historical City to Country | 0 | - | 4.85 | 79,041 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,902,176 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,420 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,458 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,923 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,557 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,218 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,528 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,872 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,788 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,104 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,746 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,697 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 89,186 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,519 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,608 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,274 |
| Landlocked Countries | 0 | - | 4.99 | 426,207 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,470 |
| Orthodox Countries | 0 | - | 4.92 | 132,838 |
| Countries that Have Won the Most Battles | 0 | - | 4.01 | 39,788 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,518 |
| Monarchies of Europe | 0 | - | 4.90 | 98,907 |
| Monarchies of Asia | 0 | - | 4.97 | 71,521 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,299 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,806,426 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,584 |
| Cities Bombed During WWII | 0 | - | 4.09 | 30,324 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,965 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,772 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,375 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,405 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,866 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,941 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,840 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,769 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,709 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,773 |
| Countries by Independence Day | 0 | - | 4.62 | 52,863 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,862 |
| Island Countries | 0 | - | 4.99 | 712,672 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,424 |
| Himalayan Countries | 0 | - | 4.93 | 140,380 |
| Andean Countries | 0 | - | 4.94 | 85,539 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,694 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,122 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,259 |
| Former Countries by Capital | 0 | - | 4.45 | 127,830 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,495 |
| Danube Countries | 0 | - | 4.97 | 72,438 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,643 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,872 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,202 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,678 |
| European Landlocked Countries | 0 | - | 4.99 | 147,640 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,352 |
| Countries with the Most Species | 0 | - | 4.99 | 103,590 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,453 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,785 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,898 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,860 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,597 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,043 |
| Countries in the Alps | 0 | - | 4.87 | 118,826 |
| Former Countries | 0 | - | 4.77 | 134,247 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,712 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,940 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,985 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,053 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,994 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,289 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,437 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,889 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,447 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,210 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,899 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,759 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,584 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,824 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,916 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,919 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,637 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 74,611 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,714 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,848 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,226 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,533 |
| Largest Countries By Category | 0 | - | 4.97 | 158,906 |
| Countries by Countries | 0 | - | 4.96 | 63,671 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,394,650 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 73,046 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,300 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,414 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,680 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,130 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,104 |
| Northernmost Countries | 0 | - | 4.99 | 364,174 |
| Political Movements by Country | 0 | - | 4.46 | 72,788 |
| Countries of South America | 0 | - | 5.00 | 933,111 |
| Countries of Oceania | 0 | - | 5.00 | 1,063,968 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,890,274 |
| "Land" Countries | 0 | - | 4.98 | 338,462 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 95,323 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 77,054 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,276 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,743 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,328 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.78 | 78,320 |
| WWII First Names | 0 | - | 4.45 | 41,979 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,821 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,454,584 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,614 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,249 |
| Countries with Megacities | 0 | - | 4.99 | 267,307 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,930 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,187 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,253 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,302 |
| Countries by Official Language | 0 | - | 4.95 | 196,059 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,706 |
| Countries in their Native Language | 0 | - | 4.99 | 199,792 |
| Subdivisions by Country | 0 | - | 4.87 | 50,633 |
| Megadiverse Countries | 0 | - | 4.96 | 135,300 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,989 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,549 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,725 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,233 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,315 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,578 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,098 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,264 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,595 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,397 |
| Hindu Countries | 0 | - | 4.87 | 50,598 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,455 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,160 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,596 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,895 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,433 |
| World Map Quiz | 0 | - | 4.81 | 65,783 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,425 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,738 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,821 |
| Countries by Road Signs | 0 | - | 4.98 | 54,376 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,326 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,127 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,600 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,663 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,471 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,576 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,776 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,714 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,794 |
| Widest Countries East to West | 0 | - | 4.92 | 130,707 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,607 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,283 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,526 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,080 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,012 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,508 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,512 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,900 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 54,890 |
| Countries with Double Letters | 0 | - | 4.96 | 97,154 |
| Countries that End in N | 0 | - | 4.95 | 172,025 |
| Countries with Five Letters | 0 | - | 4.96 | 284,063 |
| Countries with Six Letters | 0 | - | 4.94 | 214,566 |
| Countries with W | 0 | - | 4.96 | 161,007 |
| Countries with Z | 0 | - | 4.98 | 292,542 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,343 |
| Countries That End in U | 0 | - | 4.95 | 121,221 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,164 |
| Countries that End in O | 0 | - | 4.92 | 160,249 |
| Countries that End in R | 0 | - | 4.87 | 119,202 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,967 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,917 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,197 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,863 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,786 |
| Countries That End in Y | 0 | - | 4.91 | 186,104 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,506 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,304 |
| Countries that End in I | 0 | - | 4.94 | 135,339 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,671 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,080 |
