| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 36,550,296 |
| US States Quiz | 0 | - | 5.00 | 13,154,259 |
| Biggest Cities in the United States | 0 | - | 4.91 | 746,058 |
| World Capitals Quiz | 0 | - | 5.00 | 4,142,999 |
| Biggest Cities in Texas | 0 | - | 4.24 | 105,739 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,216,059 |
| Biggest Urban Areas in the UK | 0 | - | 4.38 | 160,628 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 301,342 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.61 | 93,261 |
| Biggest English-Speaking Cities | 0 | - | 4.38 | 130,600 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.84 | 102,615 |
| Biggest Cities by Language | 0 | - | 4.95 | 201,579 |
| Biggest Mediterranean Cities | 0 | - | 4.60 | 71,563 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 318,120 |
| Most Populous Islands | 0 | - | 4.60 | 106,087 |
| Biggest Cities in Japan | 0 | - | 4.68 | 70,029 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 145,850 |
| Biggest Cities in Russia | 0 | - | 4.48 | 71,765 |
| Biggest Cities in Brazil | 0 | - | 4.54 | 44,667 |
| Biggest Cities in Poland | 0 | - | 4.55 | 43,282 |
| Biggest Cities Starting With A | 0 | - | 4.49 | 104,223 |
| Biggest Cities Starting With B | 0 | - | 4.29 | 138,328 |
| Biggest Cities Starting With D | 0 | - | 4.48 | 100,544 |
| Biggest Cities Starting With H | 0 | - | 4.53 | 89,972 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 102,204 |
| Biggest Cities Starting With M | 0 | - | 4.52 | 119,382 |
| Biggest Cities Starting With P | 0 | - | 4.48 | 106,387 |
| Biggest Cities Starting With S | 0 | - | 4.38 | 106,552 |
| Biggest Cities in Mexico | 0 | - | 4.54 | 22,883 |
| Biggest U.S. Cities A-Z | 0 | - | 4.52 | 114,809 |
| Biggest World Cities A-Z | 0 | - | 4.38 | 173,844 |
| Biggest Cities in France | 0 | - | 4.45 | 171,791 |
| Biggest Cities in Spain | 0 | - | 4.60 | 140,623 |
| Biggest Cities in Italy | 0 | - | 4.60 | 199,764 |
| Biggest Cities in California | 0 | - | 4.33 | 124,106 |
| Biggest Cities in the World Quiz | 0 | - | 4.80 | 603,742 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 21,393 |
| Biggest Cities in Africa Quiz | 0 | - | 4.89 | 87,180 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 45,384 |
| Biggest Cities in Europe | 0 | - | 4.50 | 422,614 |
| Biggest Cities in Canada | 0 | - | 4.60 | 113,195 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 33,553 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 135,768 |
| Biggest Cities in China | 0 | - | 4.42 | 125,341 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 131,494 |
| Biggest Cities in Germany | 0 | - | 4.94 | 240,064 |
| Biggest City in Each U.S. State | 0 | - | 4.83 | 140,624 |
| Biggest City in Every Country | 0 | - | 4.97 | 71,279 |
| Biggest Cities in North Carolina | 0 | - | 4.53 | 29,843 |
| Biggest Cities in Wisconsin | 0 | - | 4.42 | 21,803 |
| Biggest City by Time Zone | 0 | - | 4.76 | 51,179 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.45 | 94,552 |
| Biggest English Cities by Century | 0 | - | 4.92 | 91,303 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 40,639 |
| Biggest European Cities by Letter | 0 | - | 4.47 | 113,424 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 179,530 |
| Biggest Cities in India | 0 | - | 4.60 | 57,937 |
| Biggest Cities in Asia | 0 | - | 4.91 | 89,377 |
| Islands by Largest City #1 | 0 | - | 4.43 | 80,149 |
| Biggest City by Island | 0 | - | 4.49 | 43,850 |
| Most Populous Countries in 1900 | 0 | - | 4.88 | 152,699 |
| Biggest Cities in History | 0 | - | 4.46 | 74,228 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 41,257 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.94 | 61,519 |
| Five Biggest Cities by Country | 0 | - | 4.60 | 141,867 |
| Most Populous Countries in 1950 | 0 | - | 4.45 | 66,323 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 58,345 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 65,013 |
| Biggest Coastal City by Country | 0 | - | 4.55 | 25,807 |
| U.S. States with the Highest Population Density | 0 | - | 4.44 | 56,363 |
| U.S. States with the Lowest Population Density | 0 | - | 4.89 | 77,111 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.50 | 60,572 |
| Most Populous World Capitals | 0 | - | 4.89 | 132,388 |
| Biggest City by Region | 0 | - | 4.47 | 31,123 |
| Most Populous 2nd Cities | 0 | - | 4.52 | 50,112 |
| Biggest City by Region #2 | 0 | - | 4.43 | 21,404 |
| United States Map Quiz | 0 | - | 4.95 | 3,704,293 |
| Europe Map Quiz | 0 | - | 4.99 | 3,942,708 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,601,070 |
| Biggest European Cities by Century | 0 | - | 4.95 | 110,906 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 85,213 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 75,145 |
| Capitals of Most Populated Countries | 0 | - | 4.96 | 111,204 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 116,998 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 232,516 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 57,807 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 60,849 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.95 | 60,181 |
| Islands by Largest City #2 | 0 | - | 4.53 | 25,208 |
| Biggest Cities by Latitude | 0 | - | 4.70 | 25,115 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.93 | 63,800 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 41,135 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.60 | 61,129 |
| Biggest Two-Word Cities | 0 | - | 4.62 | 36,389 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 62,311 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.71 | 58,880 |
| Cities of Ireland | 0 | - | 4.42 | 37,110 |
| Largest Cities in Alexander's Empire | 0 | - | 4.47 | 37,004 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 153,753 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.68 | 88,064 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 84,717 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,057,685 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.79 | 48,152 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 127,179 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.92 | 123,638 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 128,189 |
| Top 10 Least Populous U.S. States | 0 | - | 4.93 | 151,648 |
| Cities of China (With Some Help) | 0 | - | 4.84 | 25,602 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.90 | 39,813 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 45,084 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 228,664 |
| Countries with Megacities | 0 | - | 4.99 | 182,839 |
| Countries of Europe by Population | 0 | - | 4.98 | 114,848 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 178,005 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.95 | 133,975 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 143,018 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.82 | 41,372 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,808,877 |
| Biggest Cities in the UK | 0 | - | 4.42 | 84,647 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.93 | 86,269 |
| Biggest World Cities in 1850 | 0 | - | 4.63 | 61,196 |
| Megacities on a World Map | 0 | - | 4.98 | 207,191 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 183,421 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.76 | 50,728 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 100,418 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 77,608 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 40,752 |
| Most Populous Countries by Year | 0 | - | 4.74 | 83,967 |
| Ten Northernmost Megacities | 0 | - | 4.40 | 45,250 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.96 | 84,727 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.43 | 62,043 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 89,483 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 58,317 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 75,087 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 87,217 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 336,597 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 137,332 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 52,134 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.47 | 36,155 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.45 | 37,688 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 471,282 |
| Megacities on an Empty Map | 0 | - | 4.96 | 81,108 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.97 | 55,644 |
| All 3M Cities on the World Map | 0 | - | 4.94 | 57,569 |
| All Cities in China with Population of 1 Million | 0 | - | 4.54 | 33,373 |
| Northernmost Major City by Country | 0 | - | 4.51 | 29,187 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 24,232 |
| All Cities in India with Population of 1 Million | 0 | - | 4.82 | 35,959 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 58,665 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 101,789 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 46,374 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 79,068 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 91,117 |
| Most Populous Country by First Two Letters | 0 | - | 4.62 | 62,758 |
| Two Largest Cities by First Two Letters | 0 | - | 4.59 | 58,760 |
| U.S. States by Second Most Populous City | 0 | - | 4.41 | 37,813 |
| Largest World Capitals with Exceptions | 0 | - | 4.70 | 48,398 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.69 | 64,709 |
| Most Populous Islands of Europe | 0 | - | 4.44 | 21,976 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 71,492 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.83 | 57,078 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.90 | 62,944 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.90 | 50,323 |
| First Countries to Reach 5 Million People | 0 | - | 4.89 | 102,864 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.47 | 56,145 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.60 | 53,193 |
| Biggest Cities in Deserts | 0 | - | 4.93 | 39,458 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 277,623 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 86,174 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 64,810 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 31,938 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 133,786 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 89,607 |
| Ten Southernmost Megacities | 0 | - | 4.80 | 43,808 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 69,630 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 41,578 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.90 | 47,314 |
| Flags to Largest Cities | 0 | - | 4.60 | 26,101 |
| 500 Biggest US Cities | 0 | - | 4.85 | 83,943 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 27,360 |
| Saint Lucia Country Quiz | 0 | - | 4.62 | 14,856 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 65,656 |
| Demographics Multiple Choice | 0 | - | 4.63 | 37,631 |
| Biggest Cities in France - Extreme | 0 | - | 4.85 | 36,088 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.71 | 51,165 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.84 | 62,165 |
| Densest Countries Bordering Each Other | 0 | - | 4.92 | 60,209 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 87,339 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 70,923 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.56 | 22,881 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.56 | 31,014 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.85 | 54,489 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 6,121,769 |
| Biggest Cities in Australia on a Map | 0 | - | 4.60 | 29,415 |
| Largest Nordic Cities on a Map | 0 | - | 4.51 | 17,039 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 18,663 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.83 | 47,270 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.53 | 33,455 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.92 | 37,317 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.96 | 48,480 |
