| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 34,256,501 |
| US States Quiz | 0 | - | 5.00 | 12,298,670 |
| Biggest Cities in the United States | 0 | - | 4.93 | 709,399 |
| U.S. State Capitals Quiz | 0 | - | 4.99 | 1,341,039 |
| World Capitals Quiz | 0 | - | 5.00 | 3,927,360 |
| Country Flags Quiz #1 | 0 | - | 4.95 | 2,146,569 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,168,909 |
| Biggest Urban Areas in the UK | 0 | - | 4.34 | 156,855 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 288,296 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.55 | 89,988 |
| Biggest English-Speaking Cities | 0 | - | 4.39 | 127,854 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.84 | 99,219 |
| Biggest Cities by Language | 0 | - | 4.95 | 194,303 |
| Biggest Mediterranean Cities | 0 | - | 4.67 | 69,382 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 306,984 |
| Most Populous Islands | 0 | - | 4.64 | 102,823 |
| Biggest Cities in Japan | 0 | - | 4.68 | 66,686 |
| Biggest US Cities by Decade | 0 | - | 4.92 | 133,046 |
| Biggest Cities in Russia | 0 | - | 4.49 | 68,870 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,480,056 |
| Countries that Start with A | 0 | - | 4.96 | 1,633,053 |
| Countries that Start with B | 0 | - | 4.94 | 1,770,632 |
| Countries that Start with C | 0 | - | 4.95 | 1,402,940 |
| Countries that Start with S | 0 | - | 4.96 | 1,359,373 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 41,774 |
| Biggest Cities in Poland | 0 | - | 4.73 | 40,278 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 87,143 |
| Biggest Cities Starting With B | 0 | - | 4.38 | 121,087 |
| Biggest Cities Starting With D | 0 | - | 4.46 | 84,844 |
| Biggest Cities Starting With H | 0 | - | 4.48 | 75,816 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 85,124 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 98,903 |
| Biggest Cities Starting With P | 0 | - | 4.44 | 87,698 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 21,079 |
| Biggest U.S. Cities A-Z | 0 | - | 4.55 | 109,283 |
| Biggest World Cities A-Z | 0 | - | 4.39 | 167,210 |
| Biggest Cities in France | 0 | - | 4.53 | 161,845 |
| Biggest Cities in Spain | 0 | - | 4.65 | 133,141 |
| Biggest Cities in Italy | 0 | - | 4.64 | 189,399 |
| Biggest Cities in California | 0 | - | 4.30 | 120,023 |
| Biggest Cities in the World Quiz | 0 | - | 4.82 | 572,428 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 19,915 |
| Biggest Cities in Africa Quiz | 0 | - | 4.88 | 84,213 |
| Countries of Africa | 0 | - | 5.00 | 1,740,071 |
| Biggest Cities in The Netherlands | 0 | - | 4.42 | 36,380 |
| Biggest Cities in Europe | 0 | - | 4.64 | 404,255 |
| Biggest Cities in Canada | 0 | - | 4.58 | 108,930 |
| Biggest Cities in Sweden | 0 | - | 4.71 | 24,655 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,501 |
| Biggest Cities in China | 0 | - | 4.42 | 118,461 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 126,766 |
| Biggest Cities in Germany | 0 | - | 4.94 | 226,998 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 135,063 |
| Biggest City in Every Country | 0 | - | 4.97 | 66,919 |
| Biggest Cities in North Carolina | 0 | - | 4.48 | 25,844 |
| Biggest City by Time Zone | 0 | - | 4.74 | 49,826 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.42 | 78,241 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,872 |
| Biggest Cities in Switzerland | 0 | - | 4.56 | 38,355 |
| Biggest European Cities by Letter | 0 | - | 4.43 | 110,078 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,593 |
| Biggest Cities in India | 0 | - | 4.53 | 54,961 |
| Biggest Cities in Asia | 0 | - | 4.87 | 86,062 |
| Islands by Largest City #1 | 0 | - | 4.46 | 78,387 |
| Biggest City by Island | 0 | - | 4.49 | 42,279 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 147,237 |
| Biggest Cities in History | 0 | - | 4.47 | 70,727 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 39,903 |
| Random Capital to Country | 0 | - | 4.99 | 2,077,547 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,448 |
| Five Biggest Cities by Country | 0 | - | 4.77 | 122,608 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,468 |
| All Country Flags of the World | 0 | - | 5.00 | 2,282,195 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,287 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,264 |
| Biggest Coastal City by Country | 0 | - | 4.56 | 24,133 |
| U.S. States with the Highest Population Density | 0 | - | 4.46 | 55,007 |
| U.S. States with the Lowest Population Density | 0 | - | 4.90 | 74,644 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.53 | 58,787 |
| Most Populous World Capitals | 0 | - | 4.89 | 128,297 |
| Biggest City by Region | 0 | - | 4.50 | 29,214 |
| Most Populous 2nd Cities | 0 | - | 4.54 | 39,312 |
| Biggest City by Region #2 | 0 | - | 4.44 | 19,896 |
| United States Map Quiz | 0 | - | 4.96 | 3,584,661 |
| Europe Map Quiz | 0 | - | 4.99 | 3,729,435 |
| Africa Map Quiz | 0 | - | 5.00 | 1,760,907 |
| South America Map Quiz | 0 | - | 4.99 | 1,259,350 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,336,424 |
| Biggest European Cities by Century | 0 | - | 4.96 | 105,295 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,872 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 72,078 |
| Capitals of Most Populated Countries | 0 | - | 4.97 | 107,760 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 113,418 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 224,898 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,849 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,712 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 57,057 |
| Islands by Largest City #2 | 0 | - | 4.54 | 23,925 |
| Biggest Cities by Latitude | 0 | - | 4.73 | 24,127 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.92 | 59,317 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 39,441 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,733 |
| Biggest Two-Word Cities | 0 | - | 4.72 | 34,022 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 58,372 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.74 | 55,611 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,891 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 146,412 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.58 | 68,449 |
| Biggest Cities in the World - Extreme | 0 | - | 4.97 | 73,234 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,885,556 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,414 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 118,406 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 123,467 |
| Top 10 Least Populous U.S. States | 0 | - | 4.95 | 146,891 |
| Cities of China (With Some Help) | 0 | - | 4.77 | 23,605 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 34,030 |
| Biggest Cities with Exceptions | 0 | - | 4.88 | 42,809 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 217,882 |
| Countries with Megacities | 0 | - | 4.99 | 176,246 |
| Countries of Europe by Population | 0 | - | 4.98 | 108,585 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 168,555 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 127,445 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 123,590 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.89 | 32,491 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,652,917 |
| Biggest Cities in the UK | 0 | - | 4.42 | 79,901 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 81,879 |
| Biggest World Cities in 1850 | 0 | - | 4.53 | 47,634 |
| Megacities on a World Map | 0 | - | 4.97 | 199,889 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 174,799 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.78 | 48,888 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 95,560 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 73,752 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.81 | 38,738 |
| Most Populous Countries by Year | 0 | - | 4.78 | 79,385 |
| Ten Northernmost Megacities | 0 | - | 4.41 | 44,128 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 74,664 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.42 | 60,683 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,741 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 53,093 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 72,173 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,760 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 313,150 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 125,091 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 50,103 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.57 | 34,742 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.44 | 35,966 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 435,071 |
| Megacities on an Empty Map | 0 | - | 4.96 | 77,283 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 52,104 |
| All 3M Cities on the World Map | 0 | - | 4.94 | 54,051 |
| All Cities in China with Population of 1 Million | 0 | - | 4.67 | 28,240 |
| Northernmost Major City by Country | 0 | - | 4.50 | 28,147 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.93 | 21,178 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 32,883 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 55,371 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.93 | 78,533 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.46 | 42,510 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 76,087 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 87,175 |
| Most Populous Country by First Two Letters | 0 | - | 4.64 | 60,303 |
| Two Largest Cities by First Two Letters | 0 | - | 4.65 | 56,267 |
| Largest World Capitals with Exceptions | 0 | - | 4.66 | 37,833 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.72 | 62,143 |
| Most Populous Islands of Europe | 0 | - | 4.42 | 20,373 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,605 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,390 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,455 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 48,011 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 99,214 |
| 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 | 43,407 |
| Biggest Cities in Deserts | 0 | - | 4.86 | 37,533 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 261,936 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.92 | 79,769 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 61,901 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 112,437 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 86,193 |
| Ten Southernmost Megacities | 0 | - | 4.79 | 39,136 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,501 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 40,092 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 44,999 |
| Flags to Largest Cities | 0 | - | 4.55 | 23,112 |
| 500 Biggest US Cities | 0 | - | 4.88 | 76,172 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 26,470 |
| Saint Lucia Country Quiz | 0 | - | 4.57 | 13,901 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 54,441 |
| Demographics Multiple Choice | 0 | - | 4.55 | 36,308 |
| Biggest Cities in France - Extreme | 0 | - | 4.84 | 31,991 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.82 | 45,403 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.90 | 51,298 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,596 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,744 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 67,110 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,719 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.64 | 27,556 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.82 | 42,115 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,526,676 |
| Biggest Cities in Australia on a Map | 0 | - | 4.58 | 27,171 |
| Largest Nordic Cities on a Map | 0 | - | 4.48 | 15,617 |
