| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 34,522,631 |
| US States Quiz | 0 | - | 5.00 | 12,399,689 |
| Biggest Cities in the United States | 0 | - | 4.93 | 713,061 |
| U.S. State Capitals Quiz | 0 | - | 4.99 | 1,349,065 |
| World Capitals Quiz | 0 | - | 5.00 | 3,947,585 |
| Country Flags Quiz #1 | 0 | - | 4.95 | 2,155,857 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,174,115 |
| Biggest Urban Areas in the UK | 0 | - | 4.34 | 157,159 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 289,652 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.57 | 90,434 |
| Biggest English-Speaking Cities | 0 | - | 4.38 | 128,131 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.84 | 99,683 |
| Biggest Cities by Language | 0 | - | 4.95 | 195,008 |
| Biggest Mediterranean Cities | 0 | - | 4.64 | 69,620 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 308,031 |
| Most Populous Islands | 0 | - | 4.64 | 103,085 |
| Biggest Cities in Japan | 0 | - | 4.68 | 66,976 |
| Biggest US Cities by Decade | 0 | - | 4.93 | 133,498 |
| Biggest Cities in Russia | 0 | - | 4.49 | 69,106 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,508,469 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,267,991 |
| Countries that Start with A | 0 | - | 4.96 | 1,643,160 |
| Countries that Start with B | 0 | - | 4.94 | 1,780,824 |
| Countries that Start with C | 0 | - | 4.95 | 1,410,823 |
| Countries that Start with S | 0 | - | 4.96 | 1,367,377 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 42,030 |
| Biggest Cities in Poland | 0 | - | 4.73 | 40,543 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 87,502 |
| Biggest Cities Starting With B | 0 | - | 4.38 | 121,461 |
| Biggest Cities Starting With D | 0 | - | 4.47 | 85,125 |
| Biggest Cities Starting With H | 0 | - | 4.48 | 76,125 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 85,457 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 99,322 |
| Biggest Cities Starting With P | 0 | - | 4.44 | 88,017 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 21,220 |
| Biggest U.S. Cities A-Z | 0 | - | 4.55 | 109,755 |
| Biggest World Cities A-Z | 0 | - | 4.39 | 167,755 |
| Biggest Cities in France | 0 | - | 4.53 | 162,823 |
| Biggest Cities in Spain | 0 | - | 4.66 | 133,914 |
| Biggest Cities in Italy | 0 | - | 4.64 | 190,399 |
| Biggest Cities in California | 0 | - | 4.30 | 120,304 |
| Biggest Cities in the World Quiz | 0 | - | 4.84 | 575,599 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 20,049 |
| Biggest Cities in Africa Quiz | 0 | - | 4.89 | 84,463 |
| Countries of Africa | 0 | - | 5.00 | 1,756,392 |
| Biggest Cities in The Netherlands | 0 | - | 4.42 | 37,205 |
| Biggest Cities in Europe | 0 | - | 4.57 | 406,065 |
| Biggest Cities in Canada | 0 | - | 4.57 | 109,301 |
| Biggest Cities in Sweden | 0 | - | 4.71 | 24,868 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,926 |
| Biggest Cities in China | 0 | - | 4.46 | 119,179 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 127,474 |
| Biggest Cities in Germany | 0 | - | 4.94 | 228,323 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 135,590 |
| Biggest City in Every Country | 0 | - | 4.97 | 67,232 |
| Biggest Cities in North Carolina | 0 | - | 4.48 | 25,952 |
| Biggest City by Time Zone | 0 | - | 4.74 | 49,958 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.42 | 81,184 |
| Biggest English Cities by Century | 0 | - | 4.92 | 86,359 |
| Biggest Cities in Switzerland | 0 | - | 4.56 | 38,566 |
| Biggest European Cities by Letter | 0 | - | 4.43 | 110,306 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 174,231 |
| Biggest Cities in India | 0 | - | 4.52 | 55,206 |
| Biggest Cities in Asia | 0 | - | 4.89 | 86,408 |
| Islands by Largest City #1 | 0 | - | 4.45 | 78,556 |
| Biggest City by Island | 0 | - | 4.49 | 42,448 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 147,986 |
| Biggest Cities in History | 0 | - | 4.48 | 71,177 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 40,052 |
| Random Capital to Country | 0 | - | 4.99 | 2,087,894 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.96 | 58,707 |
| Five Biggest Cities by Country | 0 | - | 4.74 | 123,124 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,793 |
| All Country Flags of the World | 0 | - | 5.00 | 2,308,948 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,488 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,479 |
| Biggest Coastal City by Country | 0 | - | 4.56 | 24,308 |
| U.S. States with the Highest Population Density | 0 | - | 4.46 | 55,150 |
| U.S. States with the Lowest Population Density | 0 | - | 4.90 | 75,128 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.53 | 59,085 |
| Most Populous World Capitals | 0 | - | 4.90 | 128,667 |
| Biggest City by Region | 0 | - | 4.50 | 29,460 |
| Most Populous 2nd Cities | 0 | - | 4.52 | 48,288 |
| Biggest City by Region #2 | 0 | - | 4.44 | 20,102 |
| United States Map Quiz | 0 | - | 4.96 | 3,597,272 |
| Europe Map Quiz | 0 | - | 4.99 | 3,751,476 |
| Africa Map Quiz | 0 | - | 5.00 | 1,768,864 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,363,260 |
| Biggest European Cities by Century | 0 | - | 4.96 | 105,827 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 82,229 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 72,403 |
| Capitals of Most Populated Countries | 0 | - | 4.97 | 108,143 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 113,857 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 225,708 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 55,170 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 58,025 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 57,343 |
| Islands by Largest City #2 | 0 | - | 4.55 | 24,047 |
| Biggest Cities by Latitude | 0 | - | 4.73 | 24,220 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.91 | 59,653 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 39,619 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.65 | 58,999 |
| Biggest Two-Word Cities | 0 | - | 4.73 | 34,260 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 58,737 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.74 | 55,937 |
| Largest Cities in Alexander's Empire | 0 | - | 4.42 | 35,801 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 147,129 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.72 | 85,557 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 73,586 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,906,130 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.80 | 46,568 |
| Countries With More Than 100 Million People | 0 | - | 4.97 | 101,262 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 118,933 |
| Top 10 Most Populous U.S. States | 0 | - | 4.96 | 123,946 |
| Top 10 Least Populous U.S. States | 0 | - | 4.95 | 147,350 |
| Cities of China (With Some Help) | 0 | - | 4.78 | 23,840 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 34,310 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 43,076 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 218,873 |
| Countries with Megacities | 0 | - | 4.99 | 177,183 |
| Countries of Europe by Population | 0 | - | 4.98 | 109,198 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 169,727 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 128,189 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 124,297 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.90 | 34,688 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,669,714 |
| Biggest Cities in the UK | 0 | - | 4.42 | 80,421 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 82,251 |
| Biggest World Cities in 1850 | 0 | - | 4.52 | 47,924 |
| Megacities on a World Map | 0 | - | 4.97 | 200,686 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 175,794 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.79 | 49,077 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 96,036 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.84 | 74,100 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.78 | 38,948 |
| Most Populous Countries by Year | 0 | - | 4.78 | 79,867 |
| Ten Northernmost Megacities | 0 | - | 4.42 | 44,258 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 75,022 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.42 | 60,807 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 86,172 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 53,705 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 72,481 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 84,171 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 315,369 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 125,765 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 50,346 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.55 | 34,895 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.45 | 36,146 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 437,522 |
| Megacities on an Empty Map | 0 | - | 4.96 | 77,667 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 52,450 |
| All 3M Cities on the World Map | 0 | - | 4.94 | 54,491 |
| All Cities in China with Population of 1 Million | 0 | - | 4.67 | 30,618 |
| Northernmost Major City by Country | 0 | - | 4.50 | 28,252 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.93 | 21,569 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 33,240 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 55,741 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.94 | 79,055 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.46 | 42,798 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 76,443 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 87,596 |
| Most Populous Country by First Two Letters | 0 | - | 4.65 | 60,572 |
| Two Largest Cities by First Two Letters | 0 | - | 4.65 | 56,530 |
| Largest World Capitals with Exceptions | 0 | - | 4.66 | 38,160 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.72 | 62,420 |
| Most Populous Islands of Europe | 0 | - | 4.42 | 20,496 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,914 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 54,611 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,713 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 48,247 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 99,600 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,493 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.53 | 43,579 |
| Biggest Cities in Deserts | 0 | - | 4.87 | 37,734 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 263,305 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.92 | 80,404 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 62,145 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 112,973 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 86,619 |
| Ten Southernmost Megacities | 0 | - | 4.82 | 42,398 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,876 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.48 | 40,351 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 45,290 |
| Flags to Largest Cities | 0 | - | 4.57 | 23,431 |
| 500 Biggest US Cities | 0 | - | 4.87 | 77,128 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 26,557 |
| Saint Lucia Country Quiz | 0 | - | 4.58 | 13,984 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 54,852 |
| Demographics Multiple Choice | 0 | - | 4.55 | 36,441 |
| Biggest Cities in France - Extreme | 0 | - | 4.84 | 32,318 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.84 | 45,937 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.90 | 52,063 |
| Densest Countries Bordering Each Other | 0 | - | 4.89 | 57,921 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 84,215 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 67,486 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,834 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.63 | 27,878 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.79 | 42,405 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,589,467 |
| Biggest Cities in Australia on a Map | 0 | - | 4.58 | 27,380 |
