| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,317 |
| Countries in World War II | 0 | - | 4.54 | 914,485 |
| Battle to Country | 0 | - | 4.91 | 53,496 |
| Important Cities in WWII | 0 | - | 4.42 | 93,587 |
| Independence from Whom | 0 | - | 4.99 | 212,064 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,707 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,590 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,456 |
| Countries by Founding Story | 0 | - | 4.95 | 77,356 |
| Communist Countries in History | 0 | - | 4.63 | 496,413 |
| Recently Independent Countries | 0 | - | 4.98 | 159,457 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,206 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,698 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,263 |
| Countries by Former Name | 0 | - | 4.99 | 125,322 |
| Historical City to Country | 0 | - | 4.84 | 78,625 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,573,951 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,649 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,849 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,486 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,294 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,899 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,330 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,634 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,399 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,745 |
| Countries with the Most Christians | 0 | - | 4.92 | 143,562 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,563 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,480 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,583 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,000 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,903 |
| Landlocked Countries | 0 | - | 4.99 | 421,853 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,740 |
| Orthodox Countries | 0 | - | 4.92 | 132,218 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,644 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,031 |
| Monarchies of Europe | 0 | - | 4.90 | 98,324 |
| Monarchies of Asia | 0 | - | 4.97 | 71,201 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,996 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,777,893 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,984 |
| Cities Bombed During WWII | 0 | - | 4.09 | 30,199 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,229 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,750 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,782 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,351 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,354 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,279 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,213 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,080 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,486 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,471 |
| Countries by Independence Day | 0 | - | 4.61 | 52,774 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,130 |
| Island Countries | 0 | - | 4.99 | 711,004 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,386 |
| Himalayan Countries | 0 | - | 4.95 | 138,661 |
| Andean Countries | 0 | - | 4.93 | 84,577 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,772 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,774 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,400 |
| Former Countries by Capital | 0 | - | 4.45 | 127,579 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,786 |
| Danube Countries | 0 | - | 4.97 | 71,997 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,001 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,416 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,275 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,759 |
| European Landlocked Countries | 0 | - | 4.99 | 147,133 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,622 |
| Countries with the Most Species | 0 | - | 4.99 | 103,233 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,744 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,582 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,717 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,535 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,216 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,646 |
| Countries in the Alps | 0 | - | 4.87 | 118,189 |
| Former Countries | 0 | - | 4.75 | 133,903 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,040 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,011 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,635 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,590 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,496 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,939 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,663 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,479 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,174 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,831 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,645 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,517 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,216 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,460 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,506 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,876 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,300 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 63,621 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,056 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,878 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,068 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,218 |
| Largest Countries By Category | 0 | - | 4.97 | 158,195 |
| Countries by Countries | 0 | - | 4.96 | 63,211 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,378 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,784 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,669 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,280 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,564 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,670 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,723 |
| Northernmost Countries | 0 | - | 4.99 | 361,909 |
| Political Movements by Country | 0 | - | 4.46 | 72,607 |
| Countries of South America | 0 | - | 5.00 | 927,216 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,661 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,876,903 |
| "Land" Countries | 0 | - | 4.98 | 337,303 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,366 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,405 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,969 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,392 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,931 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 78,043 |
| WWII First Names | 0 | - | 4.44 | 41,833 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,034 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,001 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,927 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,853 |
| Countries with Megacities | 0 | - | 4.99 | 264,477 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,712 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,456 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,975 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,518 |
| Countries by Official Language | 0 | - | 4.95 | 195,231 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,331 |
| Countries in their Native Language | 0 | - | 4.99 | 199,023 |
| Subdivisions by Country | 0 | - | 4.86 | 50,426 |
| Megadiverse Countries | 0 | - | 4.96 | 135,003 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,061 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,342 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,229 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,097 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,129 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,026 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,648 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,142 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,654 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,870 |
| Hindu Countries | 0 | - | 4.86 | 50,282 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,195 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,955 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,343 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,484 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,150 |
| World Map Quiz | 0 | - | 4.81 | 65,063 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,233 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,343 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,048 |
| Countries by Road Signs | 0 | - | 4.98 | 54,001 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,066 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,266 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,988 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,162 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,880 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,001 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,287 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,434 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,562 |
| Widest Countries East to West | 0 | - | 4.92 | 129,629 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,450 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,363 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,117 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,761 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,588 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,856 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,370 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,796 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 54,007 |
| Countries with Double Letters | 0 | - | 4.96 | 96,210 |
| Countries that End in N | 0 | - | 4.95 | 171,083 |
| Countries with Five Letters | 0 | - | 4.96 | 282,389 |
| Countries with Six Letters | 0 | - | 4.94 | 213,510 |
| Countries with W | 0 | - | 4.97 | 160,301 |
| Countries with Z | 0 | - | 4.98 | 291,408 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,672 |
| Countries That End in U | 0 | - | 4.95 | 120,836 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,432 |
| Countries that End in O | 0 | - | 4.92 | 159,497 |
| Countries that End in R | 0 | - | 4.87 | 118,958 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,715 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,052 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,675 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,457 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,371 |
| Countries That End in Y | 0 | - | 4.91 | 185,860 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,888 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,834 |
| Countries that End in I | 0 | - | 4.94 | 135,081 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,072 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,813 |
