| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,438 |
| Countries in World War I | 0 | - | 4.88 | 228,512 |
| Countries in World War II | 0 | - | 4.55 | 915,036 |
| Battle to Country | 0 | - | 4.91 | 53,559 |
| Important Cities in WWII | 0 | - | 4.42 | 93,628 |
| Independence from Whom | 0 | - | 4.99 | 212,189 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,799 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,616 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,525 |
| Countries by Founding Story | 0 | - | 4.95 | 77,409 |
| Communist Countries in History | 0 | - | 4.63 | 496,648 |
| Cities Bombed During WWII | 0 | - | 4.09 | 30,212 |
| Recently Independent Countries | 0 | - | 4.98 | 159,512 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,731 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,310 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,847 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,388 |
| Countries by Former Name | 0 | - | 4.99 | 125,385 |
| Historical City to Country | 0 | - | 4.84 | 78,657 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 78,076 |
| WWII First Names | 0 | - | 4.44 | 41,854 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,906 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,537 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,318 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,941 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,354 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,655 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,430 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,613,113 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,786 |
| Countries with the Most Christians | 0 | - | 4.92 | 143,641 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,573 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,566 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,691 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,085 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,937 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,833 |
| Orthodox Countries | 0 | - | 4.92 | 132,298 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,664 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,080 |
| Monarchies of Europe | 0 | - | 4.90 | 98,377 |
| Monarchies of Asia | 0 | - | 4.97 | 71,246 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,041 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,043 |
| World Leaders of the World Wars | 0 | - | 4.36 | 37,906 |
| Landlocked Countries | 0 | - | 4.99 | 422,356 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,295 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,850 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,833 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,630 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,408 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,781,524 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,382 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,288 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,523 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,877 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,623 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,576 |
| Island Countries | 0 | - | 4.99 | 711,179 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,711 |
| Himalayan Countries | 0 | - | 4.95 | 138,909 |
| Andean Countries | 0 | - | 4.93 | 84,725 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,926 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,987 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,542 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,880 |
| Danube Countries | 0 | - | 4.97 | 72,065 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,084 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,471 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,386 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,876 |
| European Landlocked Countries | 0 | - | 4.99 | 147,193 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,721 |
| Countries with the Most Species | 0 | - | 4.99 | 103,277 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,839 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,616 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,737 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,575 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,263 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,710 |
| Countries in the Alps | 0 | - | 4.87 | 118,270 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,360 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,108 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,694 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,635 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,558 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,984 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,718 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,543 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,203 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,895 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,679 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,548 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,261 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,511 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,571 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,996 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,344 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,247 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,139 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,127 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,240 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,266 |
| Largest Countries By Category | 0 | - | 4.97 | 158,283 |
| Countries by Countries | 0 | - | 4.96 | 63,275 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,614 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,809 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,745 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,304 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,577 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,711 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,346 |
| Northernmost Countries | 0 | - | 4.99 | 362,141 |
| Countries of South America | 0 | - | 5.00 | 927,908 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,640 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,501 |
| "Land" Countries | 0 | - | 4.98 | 337,447 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,508 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,454 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,051 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,434 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,968 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,261 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,789 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,115 |
| Countries by Independence Day | 0 | - | 4.61 | 52,785 |
| Former Countries by Capital | 0 | - | 4.45 | 127,616 |
| Former Countries | 0 | - | 4.75 | 133,952 |
| Hindu Countries | 0 | - | 4.86 | 50,318 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,129 |
| Political Movements by Country | 0 | - | 4.46 | 72,630 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 54,087 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,675 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,836,193 |
| One Border Countries | 0 | - | 4.98 | 470,076 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,584 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,634,537 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,002 |
| Countries with Megacities | 0 | - | 4.99 | 264,811 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,831 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,524 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,088 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,604 |
| Majority Muslim Countries | 0 | - | 4.98 | 375,725 |
| Countries by Official Language | 0 | - | 4.95 | 195,319 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,484 |
| Countries in their Native Language | 0 | - | 4.99 | 199,116 |
| Subdivisions by Country | 0 | - | 4.86 | 50,442 |
| National Founders | 0 | - | 4.40 | 83,890 |
| Megadiverse Countries | 0 | - | 4.96 | 135,050 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,106,070 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,166 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,380 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,649 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,256 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,121 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,183 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,056 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,680 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,160 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,745 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,911 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,227 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,986 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,375 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,514 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,296 |
| World Map Quiz | 0 | - | 4.81 | 65,144 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,476 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,389 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,393 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 83,018 |
| Countries by Road Signs | 0 | - | 4.98 | 54,050 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,163 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,320 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,031 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,312 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,933 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,049 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,329 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,467 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,601 |
| Widest Countries East to West | 0 | - | 4.92 | 129,685 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,464 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,425 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,135 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,795 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,625 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,908 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,387 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,226 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,808 |
| Countries of Africa | 0 | - | 5.00 | 2,546,000 |
| Countries with Double Letters | 0 | - | 4.96 | 96,306 |
| Countries that End in N | 0 | - | 4.95 | 171,202 |
| Countries with Five Letters | 0 | - | 4.96 | 282,631 |
| Countries with Six Letters | 0 | - | 4.94 | 213,638 |
| Countries with W | 0 | - | 4.97 | 160,384 |
| Countries with Z | 0 | - | 4.98 | 291,551 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,757 |
