| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 33,973,034 |
| US States Quiz | 0 | - | 5.00 | 12,179,114 |
| Biggest Cities in the United States | 0 | - | 4.93 | 704,555 |
| U.S. State Capitals Quiz | 0 | - | 4.99 | 1,331,302 |
| World Capitals Quiz | 0 | - | 5.00 | 3,902,547 |
| Country Flags Quiz #1 | 0 | - | 4.95 | 2,136,519 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,162,791 |
| Biggest Urban Areas in the UK | 0 | - | 4.34 | 156,444 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 286,763 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.55 | 89,487 |
| Biggest English-Speaking Cities | 0 | - | 4.39 | 127,529 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.82 | 98,845 |
| Biggest Cities by Language | 0 | - | 4.95 | 193,285 |
| Biggest Mediterranean Cities | 0 | - | 4.73 | 69,098 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 305,661 |
| Most Populous Islands | 0 | - | 4.63 | 102,434 |
| Biggest Cities in Japan | 0 | - | 4.73 | 66,305 |
| Biggest US Cities by Decade | 0 | - | 4.93 | 132,432 |
| Biggest Cities in Russia | 0 | - | 4.48 | 68,541 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,448,670 |
| Countries that Start with A | 0 | - | 4.96 | 1,621,005 |
| Countries that Start with B | 0 | - | 4.94 | 1,758,514 |
| Countries that Start with C | 0 | - | 4.95 | 1,393,380 |
| Countries that Start with S | 0 | - | 4.96 | 1,349,848 |
| Biggest Cities in Brazil | 0 | - | 4.54 | 41,381 |
| Biggest Cities in Poland | 0 | - | 4.73 | 39,923 |
| Biggest Cities Starting With A | 0 | - | 4.54 | 86,555 |
| Biggest Cities Starting With B | 0 | - | 4.38 | 120,465 |
| Biggest Cities Starting With D | 0 | - | 4.46 | 84,418 |
| Biggest Cities Starting With H | 0 | - | 4.49 | 75,065 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 84,562 |
| Biggest Cities Starting With M | 0 | - | 4.47 | 98,228 |
| Biggest Cities Starting With P | 0 | - | 4.44 | 87,104 |
| Biggest Cities in Mexico | 0 | - | 4.51 | 20,846 |
| Biggest U.S. Cities A-Z | 0 | - | 4.53 | 108,732 |
| Biggest World Cities A-Z | 0 | - | 4.38 | 166,380 |
| Biggest Cities in France | 0 | - | 4.50 | 160,687 |
| Biggest Cities in Spain | 0 | - | 4.65 | 132,215 |
| Biggest Cities in Italy | 0 | - | 4.57 | 188,253 |
| Biggest Cities in California | 0 | - | 4.32 | 119,556 |
| Biggest Cities in the World Quiz | 0 | - | 4.84 | 568,634 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 19,766 |
| Biggest Cities in Africa Quiz | 0 | - | 4.88 | 83,811 |
| Countries of Africa | 0 | - | 5.00 | 1,721,303 |
| Biggest Cities in The Netherlands | 0 | - | 4.42 | 33,519 |
| Biggest Cities in Europe | 0 | - | 4.57 | 402,177 |
| Biggest Cities in Canada | 0 | - | 4.56 | 108,172 |
| Biggest Cities in Sweden | 0 | - | 4.67 | 24,422 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,015 |
| Biggest Cities in China | 0 | - | 4.41 | 117,445 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 126,194 |
| Biggest Cities in Germany | 0 | - | 4.94 | 225,326 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 134,047 |
| Biggest City in Every Country | 0 | - | 4.97 | 66,551 |
| Biggest Cities in North Carolina | 0 | - | 4.48 | 25,655 |
| Biggest Cities in Wisconsin | 0 | - | 4.41 | 20,489 |
| Biggest City by Time Zone | 0 | - | 4.74 | 49,648 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.42 | 78,030 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,211 |
| Biggest Cities in Switzerland | 0 | - | 4.55 | 38,064 |
| Biggest European Cities by Letter | 0 | - | 4.43 | 109,479 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 172,532 |
| Biggest Cities in India | 0 | - | 4.52 | 54,626 |
| Biggest Cities in Asia | 0 | - | 4.87 | 85,523 |
| Islands by Largest City #1 | 0 | - | 4.45 | 77,996 |
| Biggest City by Island | 0 | - | 4.49 | 42,065 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 146,551 |
| Biggest Cities in History | 0 | - | 4.49 | 70,075 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 39,704 |
| Random Capital to Country | 0 | - | 4.99 | 2,064,947 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,095 |
| Five Biggest Cities by Country | 0 | - | 4.76 | 121,936 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,120 |
| All Country Flags of the World | 0 | - | 5.00 | 2,252,253 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,057 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,032 |
| Biggest Coastal City by Country | 0 | - | 4.56 | 23,912 |
| U.S. States with the Highest Population Density | 0 | - | 4.45 | 54,796 |
| U.S. States with the Lowest Population Density | 0 | - | 4.90 | 74,356 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.49 | 51,734 |
| Most Populous World Capitals | 0 | - | 4.89 | 127,570 |
| Biggest City by Region | 0 | - | 4.50 | 28,940 |
| Most Populous 2nd Cities | 0 | - | 4.53 | 38,997 |
| Biggest City by Region #2 | 0 | - | 4.46 | 19,689 |
| United States Map Quiz | 0 | - | 4.96 | 3,570,774 |
| Europe Map Quiz | 0 | - | 4.99 | 3,705,485 |
| Africa Map Quiz | 0 | - | 5.00 | 1,752,561 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.93 | 4,304,275 |
| Biggest European Cities by Century | 0 | - | 4.97 | 104,711 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,463 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 71,738 |
| Capitals of Most Populated Countries | 0 | - | 4.97 | 107,310 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 112,708 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 223,912 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,442 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,306 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 56,673 |
| Islands by Largest City #2 | 0 | - | 4.56 | 23,720 |
| Biggest Cities by Latitude | 0 | - | 4.73 | 24,004 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.91 | 58,919 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 39,101 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,439 |
| Biggest Two-Word Cities | 0 | - | 4.71 | 33,702 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 57,895 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.73 | 55,191 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,729 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 145,396 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.57 | 68,111 |
| Biggest Cities in the World - Extreme | 0 | - | 4.97 | 72,763 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,862,539 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,218 |
| Countries With More Than 100 Million People | 0 | - | 4.97 | 100,262 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.92 | 117,688 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 122,897 |
| Top 10 Least Populous U.S. States | 0 | - | 4.95 | 146,316 |
| Cities of China (With Some Help) | 0 | - | 4.77 | 23,341 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 33,671 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 42,525 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 216,701 |
| Countries with Megacities | 0 | - | 4.99 | 158,079 |
| Countries of Europe by Population | 0 | - | 4.98 | 107,894 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 167,123 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 126,493 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 122,389 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.88 | 32,276 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,633,302 |
| Biggest Cities in the UK | 0 | - | 4.42 | 79,092 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.93 | 81,370 |
| Biggest World Cities in 1850 | 0 | - | 4.52 | 47,388 |
| Megacities on a World Map | 0 | - | 4.97 | 198,381 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 153,218 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.78 | 48,670 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 94,028 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 72,756 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.84 | 38,480 |
| Most Populous Countries by Year | 0 | - | 4.77 | 78,583 |
| Ten Northernmost Megacities | 0 | - | 4.41 | 43,961 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.93 | 73,461 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.42 | 60,490 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,254 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.96 | 52,425 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 71,760 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,220 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 300,259 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 124,514 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 49,823 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.54 | 34,552 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.44 | 35,750 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 431,817 |
| Megacities on an Empty Map | 0 | - | 4.96 | 76,764 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.97 | 51,677 |
| All 3M Cities on the World Map | 0 | - | 4.93 | 53,404 |
| All Cities in China with Population of 1 Million | 0 | - | 4.65 | 27,057 |
| Northernmost Major City by Country | 0 | - | 4.50 | 28,023 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.92 | 20,375 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 28,891 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 54,897 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.93 | 77,913 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 42,097 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 75,709 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 86,654 |
| Most Populous Country by First Two Letters | 0 | - | 4.64 | 59,976 |
| Two Largest Cities by First Two Letters | 0 | - | 4.65 | 55,946 |
| Largest World Capitals with Exceptions | 0 | - | 4.65 | 37,018 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.71 | 61,833 |
| Most Populous Islands of Europe | 0 | - | 4.41 | 20,160 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,244 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,061 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,165 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 47,711 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 97,597 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,101 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.52 | 43,166 |
| Biggest Cities in Deserts | 0 | - | 4.86 | 37,293 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 259,826 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.93 | 78,975 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 61,570 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.96 | 111,826 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 85,303 |
| Ten Southernmost Megacities | 0 | - | 4.67 | 32,237 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,069 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 39,835 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 44,647 |
| Flags to Largest Cities | 0 | - | 4.55 | 22,665 |
| 500 Biggest US Cities | 0 | - | 4.90 | 75,121 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 26,336 |
| Saint Lucia Country Quiz | 0 | - | 4.64 | 13,781 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 53,931 |
| Demographics Multiple Choice | 0 | - | 4.54 | 36,145 |
| Biggest Cities in France - Extreme | 0 | - | 4.84 | 31,506 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.82 | 44,687 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 50,354 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,284 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,133 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 66,679 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,571 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 27,134 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.81 | 41,660 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,452,805 |
| Biggest Cities in Australia on a Map | 0 | - | 4.58 | 26,894 |
