| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 34,260,703 |
| US States Quiz | 0 | - | 5.00 | 12,300,458 |
| Biggest Cities in the United States | 0 | - | 4.93 | 709,457 |
| U.S. State Capitals Quiz | 0 | - | 4.99 | 1,341,158 |
| World Capitals Quiz | 0 | - | 5.00 | 3,927,781 |
| Country Flags Quiz #1 | 0 | - | 4.95 | 2,146,688 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,169,000 |
| Biggest Urban Areas in the UK | 0 | - | 4.34 | 156,860 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 288,326 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.55 | 89,997 |
| Biggest English-Speaking Cities | 0 | - | 4.39 | 127,858 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.84 | 99,225 |
| Biggest Cities by Language | 0 | - | 4.95 | 194,317 |
| Biggest Mediterranean Cities | 0 | - | 4.67 | 69,383 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 307,011 |
| Most Populous Islands | 0 | - | 4.64 | 102,833 |
| Biggest Cities in Japan | 0 | - | 4.68 | 66,711 |
| Biggest US Cities by Decade | 0 | - | 4.92 | 133,049 |
| Biggest Cities in Russia | 0 | - | 4.49 | 68,877 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,480,543 |
| Countries that Start with A | 0 | - | 4.96 | 1,633,247 |
| Countries that Start with B | 0 | - | 4.94 | 1,770,830 |
| Countries that Start with C | 0 | - | 4.95 | 1,403,111 |
| Countries that Start with S | 0 | - | 4.96 | 1,359,538 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 41,780 |
| Biggest Cities in Poland | 0 | - | 4.73 | 40,284 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 87,148 |
| Biggest Cities Starting With B | 0 | - | 4.38 | 121,098 |
| Biggest Cities Starting With D | 0 | - | 4.46 | 84,849 |
| Biggest Cities Starting With H | 0 | - | 4.48 | 75,820 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 85,132 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 98,914 |
| Biggest Cities Starting With P | 0 | - | 4.44 | 87,705 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 21,082 |
| Biggest U.S. Cities A-Z | 0 | - | 4.55 | 109,290 |
| Biggest World Cities A-Z | 0 | - | 4.39 | 167,219 |
| Biggest Cities in France | 0 | - | 4.53 | 161,862 |
| Biggest Cities in Spain | 0 | - | 4.65 | 133,156 |
| Biggest Cities in Italy | 0 | - | 4.64 | 189,427 |
| Biggest Cities in California | 0 | - | 4.30 | 120,025 |
| Biggest Cities in the World Quiz | 0 | - | 4.82 | 572,531 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 19,917 |
| Biggest Cities in Africa Quiz | 0 | - | 4.88 | 84,218 |
| Countries of Africa | 0 | - | 5.00 | 1,740,317 |
| Biggest Cities in The Netherlands | 0 | - | 4.42 | 36,410 |
| Biggest Cities in Europe | 0 | - | 4.64 | 404,296 |
| Biggest Cities in Canada | 0 | - | 4.58 | 108,938 |
| Biggest Cities in Sweden | 0 | - | 4.71 | 24,662 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,508 |
| Biggest Cities in China | 0 | - | 4.42 | 118,479 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 126,786 |
| Biggest Cities in Germany | 0 | - | 4.94 | 227,027 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 135,072 |
| Biggest City in Every Country | 0 | - | 4.97 | 66,929 |
| Biggest Cities in North Carolina | 0 | - | 4.48 | 25,846 |
| Biggest City by Time Zone | 0 | - | 4.74 | 49,829 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.42 | 78,244 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,881 |
| Biggest Cities in Switzerland | 0 | - | 4.56 | 38,360 |
| Biggest European Cities by Letter | 0 | - | 4.43 | 110,084 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,605 |
| Biggest Cities in India | 0 | - | 4.53 | 54,969 |
| Biggest Cities in Asia | 0 | - | 4.87 | 86,068 |
| Islands by Largest City #1 | 0 | - | 4.46 | 78,392 |
| Biggest City by Island | 0 | - | 4.49 | 42,285 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 147,243 |
| Biggest Cities in History | 0 | - | 4.47 | 70,730 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 39,907 |
| Random Capital to Country | 0 | - | 4.99 | 2,077,762 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,451 |
| Five Biggest Cities by Country | 0 | - | 4.77 | 122,623 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,473 |
| All Country Flags of the World | 0 | - | 5.00 | 2,282,616 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,291 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,272 |
| Biggest Coastal City by Country | 0 | - | 4.56 | 24,135 |
| U.S. States with the Highest Population Density | 0 | - | 4.46 | 55,012 |
| U.S. States with the Lowest Population Density | 0 | - | 4.90 | 74,651 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.53 | 58,798 |
| Most Populous World Capitals | 0 | - | 4.89 | 128,302 |
| Biggest City by Region | 0 | - | 4.50 | 29,215 |
| Most Populous 2nd Cities | 0 | - | 4.54 | 39,314 |
| Biggest City by Region #2 | 0 | - | 4.44 | 19,900 |
| United States Map Quiz | 0 | - | 4.96 | 3,584,806 |
| Europe Map Quiz | 0 | - | 4.99 | 3,729,784 |
| Africa Map Quiz | 0 | - | 5.00 | 1,761,032 |
| South America Map Quiz | 0 | - | 4.99 | 1,259,420 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,336,859 |
| Biggest European Cities by Century | 0 | - | 4.96 | 105,302 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,879 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 72,083 |
| Capitals of Most Populated Countries | 0 | - | 4.97 | 107,769 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 113,431 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 224,916 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,859 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,716 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 57,061 |
| Islands by Largest City #2 | 0 | - | 4.54 | 23,926 |
| Biggest Cities by Latitude | 0 | - | 4.73 | 24,132 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.92 | 59,328 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 39,446 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,736 |
| Biggest Two-Word Cities | 0 | - | 4.72 | 34,030 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 58,376 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.74 | 55,616 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,894 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 146,429 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.58 | 68,451 |
| Biggest Cities in the World - Extreme | 0 | - | 4.97 | 73,243 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,885,799 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,414 |
| Countries With More Than 100 Million People | 0 | - | 4.97 | 100,783 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 118,411 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 123,477 |
| Top 10 Least Populous U.S. States | 0 | - | 4.95 | 146,899 |
| Cities of China (With Some Help) | 0 | - | 4.77 | 23,622 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 34,034 |
| Biggest Cities with Exceptions | 0 | - | 4.88 | 42,818 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 217,906 |
| Countries with Megacities | 0 | - | 4.99 | 176,268 |
| Countries of Europe by Population | 0 | - | 4.98 | 108,594 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 168,571 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 127,462 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 123,598 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.89 | 32,495 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,653,180 |
| Biggest Cities in the UK | 0 | - | 4.42 | 79,916 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 81,885 |
| Biggest World Cities in 1850 | 0 | - | 4.53 | 47,637 |
| Megacities on a World Map | 0 | - | 4.97 | 199,906 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 174,829 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.78 | 48,890 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 95,574 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 73,759 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.81 | 38,741 |
| Most Populous Countries by Year | 0 | - | 4.78 | 79,400 |
| Ten Northernmost Megacities | 0 | - | 4.41 | 44,133 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 74,671 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.42 | 60,684 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,749 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 53,106 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 72,177 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,762 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 313,205 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 125,103 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 50,109 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.57 | 34,745 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.44 | 35,970 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 435,123 |
| Megacities on an Empty Map | 0 | - | 4.96 | 77,295 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 52,109 |
| All 3M Cities on the World Map | 0 | - | 4.94 | 54,063 |
| All Cities in China with Population of 1 Million | 0 | - | 4.67 | 28,629 |
| Northernmost Major City by Country | 0 | - | 4.50 | 28,150 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.93 | 21,185 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 32,895 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 55,383 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.93 | 78,541 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.46 | 42,515 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 76,090 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 87,181 |
| Most Populous Country by First Two Letters | 0 | - | 4.64 | 60,307 |
| Two Largest Cities by First Two Letters | 0 | - | 4.65 | 56,272 |
| Largest World Capitals with Exceptions | 0 | - | 4.66 | 37,842 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.72 | 62,146 |
| Most Populous Islands of Europe | 0 | - | 4.42 | 20,375 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,609 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,396 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,464 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 48,014 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 99,222 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,335 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.53 | 43,407 |
| Biggest Cities in Deserts | 0 | - | 4.86 | 37,541 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 261,967 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.92 | 79,780 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 61,906 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 112,447 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 86,203 |
| Ten Southernmost Megacities | 0 | - | 4.79 | 39,416 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,506 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 40,124 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 45,005 |
| Flags to Largest Cities | 0 | - | 4.55 | 23,114 |
| 500 Biggest US Cities | 0 | - | 4.88 | 76,192 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 26,470 |
| Saint Lucia Country Quiz | 0 | - | 4.57 | 13,902 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 54,451 |
| Demographics Multiple Choice | 0 | - | 4.55 | 36,312 |
| Biggest Cities in France - Extreme | 0 | - | 4.84 | 32,000 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.82 | 45,413 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.90 | 51,314 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,600 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,750 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 67,116 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,722 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.64 | 27,565 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.82 | 42,120 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,527,896 |
| Biggest Cities in Australia on a Map | 0 | - | 4.58 | 27,174 |
