| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,437 |
| Countries in World War I | 0 | - | 4.88 | 227,574 |
| Battle to Country | 0 | - | 4.91 | 52,997 |
| Important Cities in WWII | 0 | - | 4.42 | 93,246 |
| Independence from Whom | 0 | - | 4.99 | 210,977 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,451 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,276 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,707 |
| Countries by Founding Story | 0 | - | 4.95 | 76,936 |
| Communist Countries in History | 0 | - | 4.63 | 494,231 |
| Recently Independent Countries | 0 | - | 4.98 | 158,468 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,272 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,322 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,003 |
| Countries by Former Name | 0 | - | 4.99 | 124,745 |
| Historical City to Country | 0 | - | 4.84 | 78,362 |
| Cities Bombed During WWII | 0 | - | 4.08 | 30,060 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,213,456 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,969 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,669 |
| WWII First Names | 0 | - | 4.44 | 41,699 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,066 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,914 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 75,920 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 91,101 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,026 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,297 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,891 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,150 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,451 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,404 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,618 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,483 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,274 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,414 |
| Landlocked Countries | 0 | - | 4.99 | 417,275 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,774 |
| Orthodox Countries | 0 | - | 4.92 | 131,045 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,477 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,485 |
| Monarchies of Europe | 0 | - | 4.90 | 97,769 |
| Monarchies of Asia | 0 | - | 4.97 | 70,876 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,690 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,745,349 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,209 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,768 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,522 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,245 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,851 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 120,161 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,533 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,707 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,584 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,722 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,567 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,113 |
| Countries by Independence Day | 0 | - | 4.61 | 52,691 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,231 |
| Island Countries | 0 | - | 4.99 | 709,098 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,221 |
| Himalayan Countries | 0 | - | 4.95 | 136,766 |
| Andean Countries | 0 | - | 4.95 | 83,604 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,867 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,168 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,535 |
| Former Countries by Capital | 0 | - | 4.45 | 127,278 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,127 |
| Danube Countries | 0 | - | 4.97 | 71,488 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,306 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,904 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,300 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,300 |
| European Landlocked Countries | 0 | - | 4.99 | 146,197 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,879 |
| Countries with the Most Species | 0 | - | 4.99 | 102,397 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,009 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,357 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,536 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,205 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,857 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,234 |
| Countries in the Alps | 0 | - | 4.86 | 117,436 |
| Former Countries | 0 | - | 4.75 | 133,028 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,964 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,047 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,305 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,808 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,905 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,323 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,073 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,044 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,861 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,395 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,398 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,241 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,790 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,052 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,066 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,841 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,942 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,468 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,311 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,378 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,753 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,878 |
| Largest Countries By Category | 0 | - | 4.97 | 157,356 |
| Countries by Countries | 0 | - | 4.96 | 62,674 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,066 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,482 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,957 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,109 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,423 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,147 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,151 |
| Northernmost Countries | 0 | - | 4.99 | 359,724 |
| Political Movements by Country | 0 | - | 4.46 | 72,413 |
| Countries of South America | 0 | - | 5.00 | 920,541 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,131 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,960 |
| "Land" Countries | 0 | - | 4.98 | 335,204 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 82,404 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,597 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,893 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,041 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,468 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,178 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,929 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,111 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,495 |
| Countries with Megacities | 0 | - | 4.99 | 249,431 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,347 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,672 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,676 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,643 |
| Countries by Official Language | 0 | - | 4.95 | 194,247 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,071 |
| Countries in their Native Language | 0 | - | 4.99 | 197,846 |
| Subdivisions by Country | 0 | - | 4.86 | 50,224 |
| Megadiverse Countries | 0 | - | 4.96 | 134,604 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,011 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,108 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,661 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,965 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,515 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,598 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,409 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,822 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,476 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,620 |
| Hindu Countries | 0 | - | 4.86 | 49,887 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,717 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,685 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,893 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,251 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,751 |
| World Map Quiz | 0 | - | 4.81 | 64,230 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,721 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,775 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,293 |
| Countries by Road Signs | 0 | - | 4.98 | 53,487 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,185 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,742 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,475 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,891 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,351 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,523 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,687 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,183 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,144 |
| Widest Countries East to West | 0 | - | 4.92 | 129,224 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,342 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,740 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,946 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,997 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,046 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,420 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,157 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,691 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,350 |
| Countries with Double Letters | 0 | - | 4.96 | 94,602 |
| Countries that End in N | 0 | - | 4.95 | 168,701 |
| Countries with Five Letters | 0 | - | 4.96 | 273,472 |
| Countries with Six Letters | 0 | - | 4.93 | 211,871 |
| Countries with W | 0 | - | 4.97 | 159,172 |
| Countries with Z | 0 | - | 4.98 | 289,264 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,373 |
| Countries That End in U | 0 | - | 4.95 | 120,206 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,393 |
| Countries that End in O | 0 | - | 4.92 | 159,035 |
| Countries that End in R | 0 | - | 4.87 | 118,611 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,389 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,968 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,885 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,914 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,497 |
| Countries That End in Y | 0 | - | 4.90 | 185,523 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,976 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,197 |
| Countries that End in I | 0 | - | 4.94 | 134,733 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,805 |
