| Countries in World War I | 0 | - | 4.88 | 229,122 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,107 |
| Battle to Country | 0 | - | 4.91 | 53,943 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,280 |
| Countries in World War II | 0 | - | 4.53 | 918,734 |
| Independence from Whom | 0 | - | 4.99 | 213,031 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,417 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,839 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,102 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,349 |
| Countries by Founding Story | 0 | - | 4.95 | 77,786 |
| Communist Countries in History | 0 | - | 4.63 | 498,144 |
| Recently Independent Countries | 0 | - | 4.98 | 160,330 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,944 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,730 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,122 |
| Countries by Former Name | 0 | - | 4.99 | 125,807 |
| Historical City to Country | 0 | - | 4.85 | 79,014 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,439 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,829 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,389 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,878 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,514 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,191 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,511 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,853 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,758 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,869,201 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,074 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,654 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,690 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 89,094 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,364 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,553 |
| World Map with Random Merged Countries | 0 | - | 4.99 | 1,729,611 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,235 |
| Important Cities in WWII | 0 | - | 4.42 | 93,877 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,308 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,403 |
| Orthodox Countries | 0 | - | 4.92 | 132,783 |
| Countries that Have Won the Most Battles | 0 | - | 4.01 | 39,770 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,474 |
| Monarchies of Europe | 0 | - | 4.90 | 98,858 |
| Monarchies of Asia | 0 | - | 4.97 | 71,496 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,281 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,520 |
| Landlocked Countries | 0 | - | 4.99 | 425,676 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 107,179 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,826 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,674 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,320 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,235 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,825 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,415 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,803,610 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,864 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,774 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,732 |
| WWII First Names | 0 | - | 4.45 | 41,963 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,309 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,651 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,631 |
| Island Countries | 0 | - | 4.99 | 712,520 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,393,353 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 73,022 |
| One Border Countries - Shape Quiz | 0 | - | 4.85 | 65,209 |
| Merged Country Shapes Quiz #1 | 0 | - | 4.93 | 59,685 |
| Merged Country Shapes Quiz #2 | 0 | - | 4.92 | 60,485 |
| Merged Country Shapes Quiz #3 | 0 | - | 4.87 | 42,300 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,576 |
| Northernmost Countries | 0 | - | 4.99 | 363,933 |
| Political Movements by Country | 0 | - | 4.46 | 72,769 |
| Countries of South America | 0 | - | 5.00 | 932,517 |
| Countries of Oceania | 0 | - | 5.00 | 1,063,091 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,888,836 |
| "Land" Countries | 0 | - | 4.98 | 338,350 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 95,059 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,986 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,181 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,692 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,294 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,761 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,453,968 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,449 |
| Countries by Independence Day | 0 | - | 4.62 | 52,859 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,271 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,180 |
| Himalayan Countries | 0 | - | 4.93 | 140,179 |
| Andean Countries | 0 | - | 4.94 | 85,402 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,550 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,942 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,127 |
| Former Countries by Capital | 0 | - | 4.45 | 127,804 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,401 |
| Danube Countries | 0 | - | 4.97 | 72,365 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,573 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,822 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,088 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,581 |
| European Landlocked Countries | 0 | - | 4.99 | 147,592 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,275 |
| Countries with the Most Species | 0 | - | 4.99 | 103,552 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,384 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,768 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,878 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,833 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,569 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,000 |
| Countries in the Alps | 0 | - | 4.87 | 118,750 |
| Former Countries | 0 | - | 4.77 | 134,215 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,589 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,834 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,951 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,012 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,935 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,238 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,381 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,846 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,410 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,160 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,859 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,736 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,546 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,773 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,874 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,801 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,597 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 67,340 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,650 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,637 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,108 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,494 |
| Hindu Countries | 0 | - | 4.87 | 50,570 |
| Largest Countries By Category | 0 | - | 4.97 | 158,842 |
| Countries by Countries | 0 | - | 4.96 | 63,628 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,241 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,397 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,664 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,688 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,096 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 54,848 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,848,344 |
| One Border Countries | 0 | - | 4.98 | 471,888 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,652,260 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,650 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,120 |
| Countries with Megacities | 0 | - | 4.99 | 267,043 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,816 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,117 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,134 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,226 |
| Majority Muslim Countries | 0 | - | 4.98 | 377,612 |
| Countries by Official Language | 0 | - | 4.95 | 195,970 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,604 |
| Countries in their Native Language | 0 | - | 4.99 | 199,717 |
| Subdivisions by Country | 0 | - | 4.87 | 50,610 |
| National Founders | 0 | - | 4.40 | 83,973 |
| Megadiverse Countries | 0 | - | 4.96 | 135,272 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,123,268 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,929 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,532 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 453,285 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,645 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,226 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,900 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,566 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,031 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,252 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,507 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,370 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,441 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,141 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,573 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,837 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,329 |
| Countries Bordering "U" Countries | 0 | - | 4.83 | 24,858 |
| World Map Quiz | 0 | - | 4.81 | 65,707 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,180 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,708 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,680 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 83,384 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,231 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,068 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,550 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,547 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,420 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,523 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,721 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,686 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,687 |
| Widest Countries East to West | 0 | - | 4.92 | 130,448 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,596 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,247 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,514 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,057 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,961 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,474 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,501 |
| Countries with the Most Borders | 0 | - | 4.97 | 390,545 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,888 |
