| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,720 |
| Countries in World War I | 0 | - | 4.88 | 228,752 |
| Battle to Country | 0 | - | 4.91 | 53,722 |
| Important Cities in WWII | 0 | - | 4.42 | 93,733 |
| Independence from Whom | 0 | - | 4.99 | 212,530 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,056 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,693 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,718 |
| Countries by Founding Story | 0 | - | 4.95 | 77,524 |
| Communist Countries in History | 0 | - | 4.63 | 497,312 |
| Recently Independent Countries | 0 | - | 4.98 | 159,698 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,551 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,215 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,715 |
| Countries by Former Name | 0 | - | 4.99 | 125,552 |
| Historical City to Country | 0 | - | 4.85 | 78,754 |
| Cities Bombed During WWII | 0 | - | 4.09 | 30,247 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,722,897 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,971 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 78,178 |
| WWII First Names | 0 | - | 4.44 | 41,915 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,116 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,690 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,394 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,063 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,414 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,728 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,581 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,905 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,233 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,616 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,794 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,003 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,308 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,062 |
| Landlocked Countries | 0 | - | 4.99 | 423,720 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,089 |
| Orthodox Countries | 0 | - | 4.92 | 132,513 |
| Countries that Have Won the Most Battles | 0 | - | 4.01 | 39,707 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,282 |
| Monarchies of Europe | 0 | - | 4.90 | 98,573 |
| Monarchies of Asia | 0 | - | 4.97 | 71,362 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,150 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,791,323 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,256 |
| World Leaders of the World Wars | 0 | - | 4.36 | 37,973 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,522 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,165 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,003 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 136,384 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,577 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,562 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,502 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,610 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,123 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,070 |
| Countries by Independence Day | 0 | - | 4.62 | 52,825 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,467 |
| Island Countries | 0 | - | 4.99 | 711,715 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,301 |
| Himalayan Countries | 0 | - | 4.94 | 139,474 |
| Andean Countries | 0 | - | 4.94 | 85,027 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,231 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,417 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,788 |
| Former Countries by Capital | 0 | - | 4.45 | 127,706 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,098 |
| Danube Countries | 0 | - | 4.97 | 72,199 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,289 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,617 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,692 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,194 |
| European Landlocked Countries | 0 | - | 4.99 | 147,358 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,965 |
| Countries with the Most Species | 0 | - | 4.99 | 103,408 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,095 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,679 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,790 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,681 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,430 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,844 |
| Countries in the Alps | 0 | - | 4.87 | 118,475 |
| Former Countries | 0 | - | 4.77 | 134,060 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,038 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,425 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,804 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,801 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,724 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,093 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,902 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,660 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,290 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,013 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,756 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,623 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,378 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,632 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,716 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,348 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,470 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,171 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,346 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,861 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,632 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,374 |
| Largest Countries By Category | 0 | - | 4.97 | 158,530 |
| Countries by Countries | 0 | - | 4.96 | 63,432 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,388,207 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,930 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,992 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,344 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,615 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,892 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,264 |
| Northernmost Countries | 0 | - | 4.99 | 362,979 |
| Political Movements by Country | 0 | - | 4.46 | 72,694 |
| Countries of South America | 0 | - | 5.00 | 929,833 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,044 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,882,913 |
| "Land" Countries | 0 | - | 4.98 | 337,843 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,833 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,621 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,264 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,545 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,092 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,518 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,059 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,675 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,418 |
| Countries with Megacities | 0 | - | 4.99 | 265,784 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,211 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,739 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,471 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,825 |
| Countries by Official Language | 0 | - | 4.95 | 195,614 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,968 |
| Countries in their Native Language | 0 | - | 4.99 | 199,387 |
| Subdivisions by Country | 0 | - | 4.87 | 50,524 |
| Megadiverse Countries | 0 | - | 4.96 | 135,152 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,414 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,453 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,337 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,160 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,361 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,463 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,743 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,205 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,071 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,113 |
| Hindu Countries | 0 | - | 4.87 | 50,427 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,321 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,053 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,469 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,595 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,778 |
| World Map Quiz | 0 | - | 4.81 | 65,366 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,215 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,524 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,373 |
| Countries by Road Signs | 0 | - | 4.98 | 54,191 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,616 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,641 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,304 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,922 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,172 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,299 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,510 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,573 |
| Tallest Countries North to South | 0 | - | 4.85 | 128,281 |
| Widest Countries East to West | 0 | - | 4.92 | 130,147 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,522 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,005 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,437 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,921 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,797 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,068 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,445 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,847 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 54,610 |
| Countries with Double Letters | 0 | - | 4.96 | 96,649 |
| Countries that End in N | 0 | - | 4.95 | 171,540 |
| Countries with Five Letters | 0 | - | 4.96 | 283,160 |
| Countries with Six Letters | 0 | - | 4.94 | 213,994 |
| Countries with W | 0 | - | 4.96 | 160,616 |
| Countries with Z | 0 | - | 4.98 | 291,928 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,988 |
| Countries That End in U | 0 | - | 4.95 | 121,008 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,774 |
| Countries that End in O | 0 | - | 4.92 | 159,661 |
| Countries that End in R | 0 | - | 4.87 | 119,065 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,825 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,450 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,924 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,644 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,566 |
| Countries That End in Y | 0 | - | 4.91 | 185,990 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,180 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,063 |
| Countries that End in I | 0 | - | 4.94 | 135,207 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,363 |
