| Quiz | Points | Best | Rating | Takes |
|---|
| Biggest Cities in the United States | 0 | - | 4.93 | 709,368 |
| Places in their Native Language #1 | 0 | - | 4.78 | 188,380 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,168,824 |
| Biggest Urban Areas in the UK | 0 | - | 4.34 | 156,851 |
| English Speaking Countries | 0 | - | 4.72 | 314,317 |
| Spanish-Speaking Countries Quiz | 0 | - | 4.90 | 295,714 |
| Countries and Languages Quiz | 0 | - | 4.86 | 215,724 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 288,284 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.55 | 89,986 |
| Biggest English-Speaking Cities | 0 | - | 4.39 | 127,851 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.84 | 99,216 |
| Biggest Cities by Language | 0 | - | 4.95 | 194,298 |
| Biggest Mediterranean Cities | 0 | - | 4.67 | 69,378 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 306,970 |
| Most Populous Islands | 0 | - | 4.64 | 102,821 |
| Biggest Cities in Japan | 0 | - | 4.68 | 66,680 |
| Biggest US Cities by Decade | 0 | - | 4.92 | 133,044 |
| Biggest Cities in Russia | 0 | - | 4.49 | 68,867 |
| Countries by Official Language | 0 | - | 4.93 | 142,224 |
| French-Speaking Countries Quiz | 0 | - | 4.78 | 193,989 |
| Places in their Native Language #2 | 0 | - | 4.82 | 103,400 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 41,774 |
| Biggest Cities in Poland | 0 | - | 4.73 | 40,275 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 87,141 |
| Biggest Cities Starting With B | 0 | - | 4.38 | 121,084 |
| Biggest Cities Starting With D | 0 | - | 4.46 | 84,844 |
| Biggest Cities Starting With H | 0 | - | 4.48 | 75,814 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 85,122 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 98,899 |
| Biggest Cities Starting With P | 0 | - | 4.44 | 87,695 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 21,079 |
| Biggest U.S. Cities A-Z | 0 | - | 4.55 | 109,277 |
| Biggest World Cities A-Z | 0 | - | 4.39 | 167,198 |
| Top World Languages | 0 | - | 4.89 | 579,242 |
| Biggest Cities in France | 0 | - | 4.53 | 161,839 |
| Biggest Cities in Spain | 0 | - | 4.65 | 133,130 |
| Biggest Cities in Italy | 0 | - | 4.64 | 189,392 |
| Biggest Cities in California | 0 | - | 4.30 | 120,020 |
| Biggest Cities in the World Quiz | 0 | - | 4.82 | 572,368 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 19,915 |
| Biggest Cities in Africa Quiz | 0 | - | 4.88 | 84,212 |
| Biggest Cities in The Netherlands | 0 | - | 4.42 | 36,355 |
| Biggest Cities in Europe | 0 | - | 4.64 | 404,224 |
| Biggest Cities in Canada | 0 | - | 4.58 | 108,927 |
| Biggest Cities in Sweden | 0 | - | 4.71 | 24,651 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,491 |
| Countries in their Native Language | 0 | - | 4.97 | 149,844 |
| Biggest Cities in China | 0 | - | 4.42 | 118,441 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 126,758 |
| Biggest Cities in Germany | 0 | - | 4.94 | 226,980 |
| Capitals in their Native Languages | 0 | - | 4.93 | 106,562 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 135,060 |
| Biggest City in Every Country | 0 | - | 4.97 | 66,913 |
| Biggest Cities in North Carolina | 0 | - | 4.48 | 25,843 |
| Biggest City by Time Zone | 0 | - | 4.74 | 49,825 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.42 | 78,241 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,871 |
| Biggest Cities in Switzerland | 0 | - | 4.56 | 38,355 |
| Biggest European Cities by Letter | 0 | - | 4.43 | 110,073 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,586 |
| Biggest Cities in India | 0 | - | 4.53 | 54,959 |
| Biggest Cities in Asia | 0 | - | 4.87 | 86,060 |
| Islands by Largest City #1 | 0 | - | 4.46 | 78,387 |
| Biggest City by Island | 0 | - | 4.49 | 42,278 |
| German-Speaking Countries | 0 | - | 4.92 | 106,463 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 147,229 |
| Biggest Cities in History | 0 | - | 4.47 | 70,723 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 39,900 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,446 |
| Five Biggest Cities by Country | 0 | - | 4.77 | 122,598 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,466 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,285 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,259 |
| Biggest Coastal City by Country | 0 | - | 4.56 | 24,131 |
| U.S. States with the Highest Population Density | 0 | - | 4.46 | 55,006 |
| U.S. States with the Lowest Population Density | 0 | - | 4.90 | 74,642 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.53 | 58,777 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 78,962 |
| Most Populous World Capitals | 0 | - | 4.89 | 128,294 |
| Biggest City by Region | 0 | - | 4.50 | 29,212 |
| Most Populous 2nd Cities | 0 | - | 4.54 | 39,312 |
| Biggest City by Region #2 | 0 | - | 4.44 | 19,892 |
| Biggest European Cities by Century | 0 | - | 4.96 | 105,292 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,870 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 72,076 |
| Capitals of Most Populated Countries | 0 | - | 4.97 | 107,757 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 113,412 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 224,896 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,845 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,709 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 57,056 |
| Islands by Largest City #2 | 0 | - | 4.54 | 23,924 |
| Biggest Cities by Latitude | 0 | - | 4.73 | 24,124 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.92 | 59,313 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 39,438 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,731 |
| Biggest Two-Word Cities | 0 | - | 4.72 | 34,019 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 58,369 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.74 | 55,605 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,891 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 146,403 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.58 | 68,447 |
| Biggest Cities in the World - Extreme | 0 | - | 4.97 | 73,229 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,412 |
| Countries With More Than 100 Million People | 0 | - | 4.97 | 100,774 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 118,399 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 123,463 |
| Top 10 Least Populous U.S. States | 0 | - | 4.95 | 146,886 |
| Cities of China (With Some Help) | 0 | - | 4.77 | 23,604 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 34,029 |
| Biggest Cities with Exceptions | 0 | - | 4.88 | 42,807 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 217,870 |
| Countries with Megacities | 0 | - | 4.99 | 176,239 |
| Countries of Europe by Population | 0 | - | 4.98 | 108,579 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 168,547 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 127,440 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 123,589 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.89 | 32,489 |
| Biggest Cities in the UK | 0 | - | 4.42 | 79,890 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 81,871 |
| Biggest World Cities in 1850 | 0 | - | 4.53 | 47,631 |
| Megacities on a World Map | 0 | - | 4.97 | 199,880 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 174,789 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.78 | 48,887 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 95,551 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 73,747 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.81 | 38,738 |
| Most Populous Countries by Year | 0 | - | 4.78 | 79,382 |
| Ten Northernmost Megacities | 0 | - | 4.41 | 44,126 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 74,661 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.42 | 60,682 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,737 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 53,086 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 72,171 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,753 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 313,118 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 125,088 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 50,101 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.57 | 34,740 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.44 | 35,964 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 435,031 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 61,852 |
| Megacities on an Empty Map | 0 | - | 4.96 | 77,280 |
| Top 10 Countries with the Most Spanish Speakers | 0 | - | 4.97 | 87,474 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 52,103 |
| Top World Languages on a Map | 0 | - | 4.92 | 80,558 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.95 | 160,165 |
| All 3M Cities on the World Map | 0 | - | 4.94 | 54,045 |
| All Cities in China with Population of 1 Million | 0 | - | 4.67 | 27,917 |
| Northernmost Major City by Country | 0 | - | 4.50 | 28,146 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.93 | 21,169 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 32,882 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 55,364 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.93 | 78,530 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.46 | 42,505 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 76,086 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 87,173 |
| Most Populous Country by First Two Letters | 0 | - | 4.64 | 60,303 |
| Two Largest Cities by First Two Letters | 0 | - | 4.65 | 56,266 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.73 | 52,971 |
| Largest World Capitals with Exceptions | 0 | - | 4.66 | 37,827 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.72 | 62,140 |
| Most Populous Islands of Europe | 0 | - | 4.42 | 20,373 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,603 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,388 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,453 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 48,007 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 99,210 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,328 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.53 | 43,406 |
| Biggest Cities in Deserts | 0 | - | 4.86 | 37,532 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 261,912 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.92 | 79,759 |
| Official Languages of the World on the Disappearing World Map | 0 | - | 4.98 | 78,058 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 61,900 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 112,432 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 86,189 |
| Ten Southernmost Megacities | 0 | - | 4.79 | 38,927 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,499 |
| 15 Most Populous Countries that Speak a Romance Language | 0 | - | 4.48 | 97,899 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 40,059 |
| Flags to Languages | 0 | - | 4.97 | 119,998 |
| Top European Languages on a Map | 0 | - | 4.74 | 102,778 |
| Top Asian Languages on a Map | 0 | - | 4.89 | 51,985 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 44,998 |
| Flags to Largest Cities | 0 | - | 4.55 | 23,108 |
| 500 Biggest US Cities | 0 | - | 4.88 | 76,162 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 26,469 |
| Top African Languages on a Map | 0 | - | 4.90 | 30,065 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 54,428 |
| Countries With the Most Russian Speakers | 0 | - | 4.94 | 44,851 |
| Countries With the Most German Speakers | 0 | - | 4.84 | 41,742 |
| Countries With the Most Italian Speakers | 0 | - | 4.47 | 44,440 |
| Demographics Multiple Choice | 0 | - | 4.55 | 36,308 |
| Biggest Cities in France - Extreme | 0 | - | 4.84 | 31,985 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.82 | 45,395 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.90 | 51,287 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,596 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,740 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 67,106 |
