| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,395 |
| Countries in World War I | 0 | - | 4.88 | 228,490 |
| Battle to Country | 0 | - | 4.91 | 53,540 |
| Important Cities in WWII | 0 | - | 4.42 | 93,613 |
| Independence from Whom | 0 | - | 4.99 | 212,153 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,766 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,608 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,504 |
| Countries by Founding Story | 0 | - | 4.95 | 77,392 |
| Communist Countries in History | 0 | - | 4.63 | 496,563 |
| Recently Independent Countries | 0 | - | 4.98 | 159,493 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,276 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,785 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,348 |
| Countries by Former Name | 0 | - | 4.99 | 125,368 |
| Historical City to Country | 0 | - | 4.84 | 78,643 |
| Cities Bombed During WWII | 0 | - | 4.09 | 30,207 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,600,464 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,697 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 78,066 |
| WWII First Names | 0 | - | 4.44 | 41,848 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,886 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,519 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,308 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,929 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,344 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,647 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,421 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,769 |
| Countries with the Most Christians | 0 | - | 4.92 | 143,615 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,570 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,530 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,656 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,057 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,922 |
| Landlocked Countries | 0 | - | 4.99 | 422,184 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,801 |
| Orthodox Countries | 0 | - | 4.92 | 132,263 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,657 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,063 |
| Monarchies of Europe | 0 | - | 4.90 | 98,357 |
| Monarchies of Asia | 0 | - | 4.97 | 71,228 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,028 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,780,279 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,027 |
| World Leaders of the World Wars | 0 | - | 4.36 | 37,901 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,270 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,816 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,822 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,545 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,388 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,365 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,269 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,515 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,752 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,574 |
| Countries by Independence Day | 0 | - | 4.61 | 52,783 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,472 |
| Island Countries | 0 | - | 4.99 | 711,128 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,595 |
| Himalayan Countries | 0 | - | 4.95 | 138,842 |
| Andean Countries | 0 | - | 4.93 | 84,673 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,871 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,914 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,503 |
| Former Countries by Capital | 0 | - | 4.45 | 127,603 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,847 |
| Danube Countries | 0 | - | 4.97 | 72,041 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,055 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,450 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,357 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,845 |
| European Landlocked Countries | 0 | - | 4.99 | 147,168 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,684 |
| Countries with the Most Species | 0 | - | 4.99 | 103,266 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,805 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,605 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,729 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,558 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,249 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,687 |
| Countries in the Alps | 0 | - | 4.87 | 118,237 |
| Former Countries | 0 | - | 4.75 | 133,937 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,252 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,071 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,676 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,621 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,544 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,965 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,698 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,515 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,195 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,874 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,668 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,541 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,243 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,497 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,547 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,963 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,332 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,063 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,124 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,053 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,188 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,253 |
| Largest Countries By Category | 0 | - | 4.97 | 158,253 |
| Countries by Countries | 0 | - | 4.96 | 63,260 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,252 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,801 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,714 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,297 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,571 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,692 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,155 |
| Northernmost Countries | 0 | - | 4.99 | 362,059 |
| Political Movements by Country | 0 | - | 4.46 | 72,623 |
| Countries of South America | 0 | - | 5.00 | 927,662 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,382 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,018 |
| "Land" Countries | 0 | - | 4.98 | 337,403 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,457 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,437 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,023 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,423 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,960 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,096 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,540 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,048 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,957 |
| Countries with Megacities | 0 | - | 4.99 | 264,683 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,789 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,499 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,054 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,576 |
| Countries by Official Language | 0 | - | 4.95 | 195,296 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,435 |
| Countries in their Native Language | 0 | - | 4.99 | 199,085 |
| Subdivisions by Country | 0 | - | 4.86 | 50,438 |
| Megadiverse Countries | 0 | - | 4.96 | 135,033 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,131 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,372 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,246 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,115 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,164 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,048 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,670 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,154 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,709 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,899 |
| Hindu Countries | 0 | - | 4.86 | 50,309 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,219 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,980 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,364 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,507 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,249 |
| World Map Quiz | 0 | - | 4.81 | 65,123 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,401 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,371 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,095 |
| Countries by Road Signs | 0 | - | 4.98 | 54,028 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,131 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,307 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,017 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,268 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,918 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,029 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,321 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,456 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,587 |
| Widest Countries East to West | 0 | - | 4.92 | 129,668 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,462 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,401 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,127 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,781 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,614 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,885 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,380 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,802 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 54,064 |
| Countries with Double Letters | 0 | - | 4.96 | 96,271 |
| Countries that End in N | 0 | - | 4.95 | 171,160 |
| Countries with Five Letters | 0 | - | 4.96 | 282,558 |
| Countries with Six Letters | 0 | - | 4.94 | 213,597 |
| Countries with W | 0 | - | 4.97 | 160,349 |
| Countries with Z | 0 | - | 4.98 | 291,503 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,725 |
| Countries That End in U | 0 | - | 4.95 | 120,864 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,490 |
| Countries that End in O | 0 | - | 4.92 | 159,518 |
| Countries that End in R | 0 | - | 4.87 | 118,975 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,738 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,138 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,709 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,483 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,409 |
| Countries That End in Y | 0 | - | 4.91 | 185,883 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,946 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,872 |
| Countries that End in I | 0 | - | 4.94 | 135,104 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,132 |
