| Countries in World War I | 0 | - | 4.88 | 226,638 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,442 |
| Battle to Country | 0 | - | 4.91 | 52,543 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,496 |
| Countries in World War II | 0 | - | 4.54 | 904,780 |
| Independence from Whom | 0 | - | 4.99 | 209,731 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,782 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,012 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,044 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,777 |
| Countries by Founding Story | 0 | - | 4.95 | 76,560 |
| Communist Countries in History | 0 | - | 4.63 | 492,596 |
| Recently Independent Countries | 0 | - | 4.98 | 158,000 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,539 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,220 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 148,925 |
| Countries by Former Name | 0 | - | 4.99 | 124,310 |
| Historical City to Country | 0 | - | 4.84 | 78,138 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,525 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,745 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,271 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,324 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,302 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,631 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,585 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,834 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,235 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,930,588 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,854 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,494 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,280 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,945 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,505 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,750 |
| World Map with Random Merged Countries | 0 | - | 4.99 | 1,705,765 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,618 |
| Important Cities in WWII | 0 | - | 4.42 | 92,894 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,392 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,067 |
| Orthodox Countries | 0 | - | 4.91 | 130,415 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,369 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,060 |
| Monarchies of Europe | 0 | - | 4.90 | 97,342 |
| Monarchies of Asia | 0 | - | 4.97 | 70,613 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,437 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,618 |
| Landlocked Countries | 0 | - | 4.99 | 413,738 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,313 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,932 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,287 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,380 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,268 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,104 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,384 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,718,076 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,269 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,139 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,504 |
| WWII First Names | 0 | - | 4.44 | 41,570 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,192 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,156 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,911 |
| Island Countries | 0 | - | 4.99 | 707,675 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,652 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,290 |
| One Border Countries - Shape Quiz | 0 | - | 4.84 | 64,512 |
| Merged Country Shapes Quiz #1 | 0 | - | 4.93 | 59,035 |
| Merged Country Shapes Quiz #2 | 0 | - | 4.92 | 59,836 |
| Merged Country Shapes Quiz #3 | 0 | - | 4.86 | 41,665 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,622 |
| Northernmost Countries | 0 | - | 4.99 | 357,795 |
| Political Movements by Country | 0 | - | 4.46 | 72,267 |
| Countries of South America | 0 | - | 5.00 | 914,981 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,770 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,848,810 |
| "Land" Countries | 0 | - | 4.98 | 333,684 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,112 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,188 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,178 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,704 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,124 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,290 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,332 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,719 |
| Countries by Independence Day | 0 | - | 4.56 | 52,612 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,349 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,646 |
| Himalayan Countries | 0 | - | 4.95 | 135,410 |
| Andean Countries | 0 | - | 4.94 | 82,844 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,235 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,234 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,927 |
| Former Countries by Capital | 0 | - | 4.45 | 127,062 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,624 |
| Danube Countries | 0 | - | 4.97 | 71,094 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,776 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,547 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,514 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,423 |
| European Landlocked Countries | 0 | - | 4.99 | 145,767 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,228 |
| Countries with the Most Species | 0 | - | 4.99 | 95,247 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,368 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,202 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,372 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,964 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,581 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,957 |
| Countries in the Alps | 0 | - | 4.86 | 116,840 |
| Former Countries | 0 | - | 4.75 | 132,716 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,581 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,278 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,020 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,432 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,184 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,011 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,591 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,769 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,345 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,075 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,198 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,049 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,460 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,758 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,763 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,098 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,657 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,260 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,779 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,361 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,713 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,611 |
| Hindu Countries | 0 | - | 4.86 | 49,598 |
| Largest Countries By Category | 0 | - | 4.97 | 156,780 |
| Countries by Countries | 0 | - | 4.96 | 62,269 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,404 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,964 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,335 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,686 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,778 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 52,820 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,801,704 |
| One Border Countries | 0 | - | 4.98 | 464,474 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,588,713 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,546 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,330 |
| Countries with Megacities | 0 | - | 4.99 | 247,078 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,201 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,029 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,618 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,937 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,602 |
| Countries by Official Language | 0 | - | 4.95 | 192,800 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,165 |
| Countries in their Native Language | 0 | - | 4.99 | 196,663 |
| Subdivisions by Country | 0 | - | 4.86 | 50,071 |
| National Founders | 0 | - | 4.40 | 83,654 |
| Megadiverse Countries | 0 | - | 4.97 | 133,909 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,088,251 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,820 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,922 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,831 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,431 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,865 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,683 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,160 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,220 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,750 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,600 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,433 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,502 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,509 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,689 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,032 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,626 |
| Countries Bordering "U" Countries | 0 | - | 4.82 | 24,081 |
| World Map Quiz | 0 | - | 4.81 | 63,513 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,734 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,342 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 42,715 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 81,831 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,374 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,005 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,965 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,802 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,866 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,073 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,287 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,954 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,343 |
| Widest Countries East to West | 0 | - | 4.92 | 128,615 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,219 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,234 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,573 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,698 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,644 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,057 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,052 |
| Countries with the Most Borders | 0 | - | 4.97 | 385,856 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,586 |
