| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 34,103,116 |
| US States Quiz | 0 | - | 5.00 | 12,233,456 |
| Biggest Cities in the United States | 0 | - | 4.93 | 706,783 |
| U.S. State Capitals Quiz | 0 | - | 4.99 | 1,335,837 |
| World Capitals Quiz | 0 | - | 5.00 | 3,913,332 |
| Country Flags Quiz #1 | 0 | - | 4.95 | 2,141,245 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,165,614 |
| Biggest Urban Areas in the UK | 0 | - | 4.34 | 156,646 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 287,514 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.54 | 89,743 |
| Biggest English-Speaking Cities | 0 | - | 4.39 | 127,683 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.84 | 99,023 |
| Biggest Cities by Language | 0 | - | 4.95 | 193,639 |
| Biggest Mediterranean Cities | 0 | - | 4.73 | 69,233 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 306,256 |
| Most Populous Islands | 0 | - | 4.63 | 102,651 |
| Biggest Cities in Japan | 0 | - | 4.73 | 66,481 |
| Biggest US Cities by Decade | 0 | - | 4.92 | 132,705 |
| Biggest Cities in Russia | 0 | - | 4.48 | 68,695 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,462,883 |
| Countries that Start with A | 0 | - | 4.96 | 1,626,736 |
| Countries that Start with B | 0 | - | 4.94 | 1,764,277 |
| Countries that Start with C | 0 | - | 4.95 | 1,397,962 |
| Countries that Start with S | 0 | - | 4.97 | 1,354,311 |
| Biggest Cities in Brazil | 0 | - | 4.54 | 41,566 |
| Biggest Cities in Poland | 0 | - | 4.73 | 40,077 |
| Biggest Cities Starting With A | 0 | - | 4.54 | 86,855 |
| Biggest Cities Starting With B | 0 | - | 4.38 | 120,798 |
| Biggest Cities Starting With D | 0 | - | 4.46 | 84,627 |
| Biggest Cities Starting With H | 0 | - | 4.48 | 75,343 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 84,861 |
| Biggest Cities Starting With M | 0 | - | 4.47 | 98,553 |
| Biggest Cities Starting With P | 0 | - | 4.44 | 87,408 |
| Biggest Cities in Mexico | 0 | - | 4.51 | 20,965 |
| Biggest U.S. Cities A-Z | 0 | - | 4.52 | 109,003 |
| Biggest World Cities A-Z | 0 | - | 4.38 | 166,742 |
| Biggest Cities in France | 0 | - | 4.52 | 161,254 |
| Biggest Cities in Spain | 0 | - | 4.64 | 132,637 |
| Biggest Cities in Italy | 0 | - | 4.57 | 188,744 |
| Biggest Cities in California | 0 | - | 4.30 | 119,759 |
| Biggest Cities in the World Quiz | 0 | - | 4.84 | 570,415 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 19,834 |
| Biggest Cities in Africa Quiz | 0 | - | 4.88 | 84,009 |
| Countries of Africa | 0 | - | 5.00 | 1,730,002 |
| Biggest Cities in The Netherlands | 0 | - | 4.42 | 33,657 |
| Biggest Cities in Europe | 0 | - | 4.56 | 403,158 |
| Biggest Cities in Canada | 0 | - | 4.56 | 108,658 |
| Biggest Cities in Sweden | 0 | - | 4.71 | 24,534 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,230 |
| Biggest Cities in China | 0 | - | 4.42 | 118,024 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 126,457 |
| Biggest Cities in Germany | 0 | - | 4.94 | 226,009 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 134,390 |
| Biggest City in Every Country | 0 | - | 4.97 | 66,732 |
| Biggest Cities in North Carolina | 0 | - | 4.48 | 25,749 |
| Biggest Cities in Wisconsin | 0 | - | 4.41 | 20,561 |
| Biggest City by Time Zone | 0 | - | 4.74 | 49,730 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.42 | 78,137 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,502 |
| Biggest Cities in Switzerland | 0 | - | 4.55 | 38,184 |
| Biggest European Cities by Letter | 0 | - | 4.43 | 109,624 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,183 |
| Biggest Cities in India | 0 | - | 4.51 | 54,775 |
| Biggest Cities in Asia | 0 | - | 4.87 | 85,838 |
| Islands by Largest City #1 | 0 | - | 4.45 | 78,281 |
| Biggest City by Island | 0 | - | 4.49 | 42,178 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 146,865 |
| Biggest Cities in History | 0 | - | 4.49 | 70,416 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 39,795 |
| Random Capital to Country | 0 | - | 4.99 | 2,070,861 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,259 |
| Five Biggest Cities by Country | 0 | - | 4.76 | 122,253 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,277 |
| All Country Flags of the World | 0 | - | 5.00 | 2,265,910 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,172 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,142 |
| Biggest Coastal City by Country | 0 | - | 4.56 | 24,021 |
| U.S. States with the Highest Population Density | 0 | - | 4.46 | 54,896 |
| U.S. States with the Lowest Population Density | 0 | - | 4.90 | 74,475 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.49 | 51,822 |
| Most Populous World Capitals | 0 | - | 4.89 | 127,785 |
| Biggest City by Region | 0 | - | 4.50 | 29,063 |
| Most Populous 2nd Cities | 0 | - | 4.52 | 39,153 |
| Biggest City by Region #2 | 0 | - | 4.46 | 19,774 |
| United States Map Quiz | 0 | - | 4.96 | 3,577,427 |
| Europe Map Quiz | 0 | - | 4.99 | 3,716,863 |
| Africa Map Quiz | 0 | - | 5.00 | 1,756,452 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,320,063 |
| Biggest European Cities by Century | 0 | - | 4.96 | 104,965 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,652 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 71,873 |
| Capitals of Most Populated Countries | 0 | - | 4.97 | 107,527 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 113,161 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 224,395 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,662 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,505 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 56,868 |
| Islands by Largest City #2 | 0 | - | 4.56 | 23,836 |
| Biggest Cities by Latitude | 0 | - | 4.73 | 24,058 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.92 | 59,098 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 39,328 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,564 |
| Biggest Two-Word Cities | 0 | - | 4.71 | 33,855 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 58,139 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.73 | 55,394 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,798 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 145,859 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.56 | 68,275 |
| Biggest Cities in the World - Extreme | 0 | - | 4.97 | 72,994 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,873,811 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,301 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.92 | 118,032 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 123,168 |
| Top 10 Least Populous U.S. States | 0 | - | 4.95 | 146,579 |
| Cities of China (With Some Help) | 0 | - | 4.77 | 23,484 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 33,823 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 42,649 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 217,261 |
| Countries with Megacities | 0 | - | 4.99 | 175,188 |
| Countries of Europe by Population | 0 | - | 4.98 | 108,223 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 167,971 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 126,889 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 123,152 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.89 | 32,375 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,642,068 |
| Biggest Cities in the UK | 0 | - | 4.42 | 79,608 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 81,605 |
| Biggest World Cities in 1850 | 0 | - | 4.52 | 47,491 |
| Megacities on a World Map | 0 | - | 4.97 | 199,119 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 170,604 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.78 | 48,775 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 95,090 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 73,426 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.81 | 38,601 |
| Most Populous Countries by Year | 0 | - | 4.77 | 78,890 |
| Ten Northernmost Megacities | 0 | - | 4.41 | 44,027 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.93 | 74,368 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.42 | 60,579 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,484 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.96 | 52,764 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 71,934 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,474 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 306,695 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 124,794 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 49,953 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.54 | 34,641 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.44 | 35,860 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 433,308 |
| Megacities on an Empty Map | 0 | - | 4.96 | 77,010 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.97 | 51,899 |
| All 3M Cities on the World Map | 0 | - | 4.93 | 53,698 |
| All Cities in China with Population of 1 Million | 0 | - | 4.65 | 27,421 |
| Northernmost Major City by Country | 0 | - | 4.50 | 28,078 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.92 | 20,788 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 32,280 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 55,114 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.93 | 78,215 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 42,323 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 75,883 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 86,916 |
| Most Populous Country by First Two Letters | 0 | - | 4.64 | 60,125 |
| Two Largest Cities by First Two Letters | 0 | - | 4.65 | 56,098 |
| Largest World Capitals with Exceptions | 0 | - | 4.66 | 37,529 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.71 | 61,974 |
| Most Populous Islands of Europe | 0 | - | 4.42 | 20,265 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,439 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,221 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,317 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 47,857 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 98,857 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,209 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.52 | 43,275 |
| Biggest Cities in Deserts | 0 | - | 4.86 | 37,398 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 260,848 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.93 | 79,368 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 61,730 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 112,123 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 85,940 |
| Ten Southernmost Megacities | 0 | - | 4.67 | 32,344 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,281 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 39,929 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 44,815 |
| Flags to Largest Cities | 0 | - | 4.55 | 22,888 |
| 500 Biggest US Cities | 0 | - | 4.90 | 75,611 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 26,417 |
| Saint Lucia Country Quiz | 0 | - | 4.64 | 13,834 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 54,140 |
| Demographics Multiple Choice | 0 | - | 4.54 | 36,214 |
| Biggest Cities in France - Extreme | 0 | - | 4.84 | 31,736 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.82 | 45,037 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 50,787 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,422 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,331 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 66,904 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,637 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 27,361 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.82 | 41,862 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,486,097 |
| Biggest Cities in Australia on a Map | 0 | - | 4.58 | 27,030 |
| Largest Nordic Cities on a Map | 0 | - | 4.48 | 15,521 |
