| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 34,134,378 |
| US States Quiz | 0 | - | 5.00 | 12,246,672 |
| Biggest Cities in the United States | 0 | - | 4.93 | 707,326 |
| U.S. State Capitals Quiz | 0 | - | 4.99 | 1,336,922 |
| World Capitals Quiz | 0 | - | 5.00 | 3,916,112 |
| Country Flags Quiz #1 | 0 | - | 4.95 | 2,142,325 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,166,309 |
| Biggest Urban Areas in the UK | 0 | - | 4.34 | 156,682 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 287,678 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.55 | 89,796 |
| Biggest English-Speaking Cities | 0 | - | 4.39 | 127,727 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.84 | 99,067 |
| Biggest Cities by Language | 0 | - | 4.95 | 193,948 |
| Biggest Mediterranean Cities | 0 | - | 4.73 | 69,264 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 306,402 |
| Most Populous Islands | 0 | - | 4.64 | 102,695 |
| Biggest Cities in Japan | 0 | - | 4.73 | 66,516 |
| Biggest US Cities by Decade | 0 | - | 4.92 | 132,759 |
| Biggest Cities in Russia | 0 | - | 4.48 | 68,734 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,466,343 |
| Countries that Start with A | 0 | - | 4.96 | 1,628,083 |
| Countries that Start with B | 0 | - | 4.94 | 1,765,589 |
| Countries that Start with C | 0 | - | 4.95 | 1,399,063 |
| Countries that Start with S | 0 | - | 4.97 | 1,355,366 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 41,622 |
| Biggest Cities in Poland | 0 | - | 4.73 | 40,117 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 86,916 |
| Biggest Cities Starting With B | 0 | - | 4.38 | 120,849 |
| Biggest Cities Starting With D | 0 | - | 4.46 | 84,673 |
| Biggest Cities Starting With H | 0 | - | 4.48 | 75,411 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 84,904 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 98,632 |
| Biggest Cities Starting With P | 0 | - | 4.44 | 87,473 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 20,998 |
| Biggest U.S. Cities A-Z | 0 | - | 4.54 | 109,050 |
| Biggest World Cities A-Z | 0 | - | 4.38 | 166,827 |
| Biggest Cities in France | 0 | - | 4.52 | 161,349 |
| Biggest Cities in Spain | 0 | - | 4.64 | 132,723 |
| Biggest Cities in Italy | 0 | - | 4.57 | 188,866 |
| Biggest Cities in California | 0 | - | 4.30 | 119,827 |
| Biggest Cities in the World Quiz | 0 | - | 4.84 | 570,782 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 19,854 |
| Biggest Cities in Africa Quiz | 0 | - | 4.88 | 84,055 |
| Countries of Africa | 0 | - | 5.00 | 1,732,303 |
| Biggest Cities in The Netherlands | 0 | - | 4.42 | 33,678 |
| Biggest Cities in Europe | 0 | - | 4.63 | 403,376 |
| Biggest Cities in Canada | 0 | - | 4.57 | 108,715 |
| Biggest Cities in Sweden | 0 | - | 4.71 | 24,557 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,283 |
| Biggest Cities in China | 0 | - | 4.43 | 118,137 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 126,528 |
| Biggest Cities in Germany | 0 | - | 4.94 | 226,219 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 134,461 |
| Biggest City in Every Country | 0 | - | 4.97 | 66,773 |
| Biggest Cities in North Carolina | 0 | - | 4.48 | 25,768 |
| Biggest City by Time Zone | 0 | - | 4.74 | 49,752 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.42 | 78,157 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,585 |
| Biggest Cities in Switzerland | 0 | - | 4.55 | 38,216 |
| Biggest European Cities by Letter | 0 | - | 4.43 | 109,659 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,271 |
| Biggest Cities in India | 0 | - | 4.52 | 54,806 |
| Biggest Cities in Asia | 0 | - | 4.87 | 85,897 |
| Islands by Largest City #1 | 0 | - | 4.45 | 78,305 |
| Biggest City by Island | 0 | - | 4.49 | 42,194 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 146,939 |
| Biggest Cities in History | 0 | - | 4.49 | 70,490 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 39,818 |
| Random Capital to Country | 0 | - | 4.99 | 2,072,159 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,293 |
| Five Biggest Cities by Country | 0 | - | 4.76 | 122,323 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,313 |
| All Country Flags of the World | 0 | - | 5.00 | 2,269,309 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,191 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,162 |
| Biggest Coastal City by Country | 0 | - | 4.56 | 24,045 |
| U.S. States with the Highest Population Density | 0 | - | 4.46 | 54,922 |
| U.S. States with the Lowest Population Density | 0 | - | 4.90 | 74,509 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.49 | 51,841 |
| Most Populous World Capitals | 0 | - | 4.89 | 127,836 |
| Biggest City by Region | 0 | - | 4.50 | 29,109 |
| Most Populous 2nd Cities | 0 | - | 4.53 | 39,198 |
| Biggest City by Region #2 | 0 | - | 4.44 | 19,810 |
| United States Map Quiz | 0 | - | 4.96 | 3,578,902 |
| Europe Map Quiz | 0 | - | 4.99 | 3,719,397 |
| Africa Map Quiz | 0 | - | 5.00 | 1,757,407 |
| South America Map Quiz | 0 | - | 4.99 | 1,256,191 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,323,538 |
| Biggest European Cities by Century | 0 | - | 4.96 | 105,024 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,699 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 71,913 |
| Capitals of Most Populated Countries | 0 | - | 4.97 | 107,583 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 113,218 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 224,503 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,695 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,555 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 56,908 |
| Islands by Largest City #2 | 0 | - | 4.56 | 23,866 |
| Biggest Cities by Latitude | 0 | - | 4.73 | 24,072 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.92 | 59,145 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 39,349 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,596 |
| Biggest Two-Word Cities | 0 | - | 4.71 | 33,882 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 58,169 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.73 | 55,439 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,813 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 145,967 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.57 | 68,300 |
| Biggest Cities in the World - Extreme | 0 | - | 4.97 | 73,037 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,876,052 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,313 |
| Countries With More Than 100 Million People | 0 | - | 4.97 | 100,553 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 118,130 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 123,223 |
| Top 10 Least Populous U.S. States | 0 | - | 4.95 | 146,642 |
| Cities of China (With Some Help) | 0 | - | 4.77 | 23,513 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.90 | 33,877 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 42,696 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 217,411 |
| Countries with Megacities | 0 | - | 4.99 | 175,621 |
| Countries of Europe by Population | 0 | - | 4.98 | 108,298 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 168,091 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 126,961 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 123,263 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.89 | 32,403 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,644,320 |
| Biggest Cities in the UK | 0 | - | 4.42 | 79,661 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 81,662 |
| Biggest World Cities in 1850 | 0 | - | 4.52 | 47,522 |
| Megacities on a World Map | 0 | - | 4.97 | 199,459 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 172,927 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.78 | 48,796 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 95,273 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 73,530 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.81 | 38,642 |
| Most Populous Countries by Year | 0 | - | 4.78 | 78,951 |
| Ten Northernmost Megacities | 0 | - | 4.41 | 44,045 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.93 | 74,468 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.42 | 60,602 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,538 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 52,829 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 71,981 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,537 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 310,271 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 124,860 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 49,981 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.57 | 34,662 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.44 | 35,883 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 433,698 |
| Megacities on an Empty Map | 0 | - | 4.96 | 77,052 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.97 | 51,933 |
| All 3M Cities on the World Map | 0 | - | 4.94 | 53,778 |
| All Cities in China with Population of 1 Million | 0 | - | 4.66 | 27,481 |
| Northernmost Major City by Country | 0 | - | 4.50 | 28,092 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.93 | 20,869 |
| All Cities in India with Population of 1 Million | 0 | - | 4.80 | 32,596 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 55,160 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.93 | 78,278 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.46 | 42,369 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 75,917 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 86,954 |
| Most Populous Country by First Two Letters | 0 | - | 4.64 | 60,164 |
| Two Largest Cities by First Two Letters | 0 | - | 4.65 | 56,136 |
| Largest World Capitals with Exceptions | 0 | - | 4.66 | 37,624 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.71 | 62,003 |
| Most Populous Islands of Europe | 0 | - | 4.42 | 20,295 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,470 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,251 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,357 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 47,886 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 98,948 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,233 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.53 | 43,309 |
| Biggest Cities in Deserts | 0 | - | 4.86 | 37,438 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 261,137 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.93 | 79,476 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 61,768 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 112,204 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 85,987 |
| Ten Southernmost Megacities | 0 | - | 4.68 | 32,367 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,330 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 39,947 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 44,844 |
| Flags to Largest Cities | 0 | - | 4.55 | 22,940 |
| 500 Biggest US Cities | 0 | - | 4.88 | 75,710 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 26,425 |
| Saint Lucia Country Quiz | 0 | - | 4.65 | 13,850 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 54,200 |
| Demographics Multiple Choice | 0 | - | 4.55 | 36,235 |
| Biggest Cities in France - Extreme | 0 | - | 4.84 | 31,797 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.82 | 45,106 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 50,887 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,460 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,375 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 66,942 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,651 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 27,405 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.82 | 41,913 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,493,652 |
| Biggest Cities in Australia on a Map | 0 | - | 4.58 | 27,062 |
