| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 131,621 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 69,430 |
| 500 Biggest US Cities | 0 | - | 4.87 | 98,002 |
| Biggest Cities in the World | 0 | - | 4.89 | 686,409 |
| Biggest Cities in Asia | 0 | - | 4.94 | 95,807 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 43,401 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 41,668 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 199,108 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 109,218 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 371,020 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.90 | 29,012 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 303,898 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 97,408 |
| Biggest Cities in the United States | 0 | - | 4.92 | 815,479 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 333,714 |
| Biggest City by Time Zone | 0 | - | 4.84 | 54,323 |
| Biggest City in Every Country | 0 | - | 4.97 | 78,743 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 169,605 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 92,005 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 96,126 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 64,856 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.86 | 71,379 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 65,170 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 42,332 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 59,659 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,351 |
| Biggest Cities in California | 0 | - | 4.35 | 130,376 |
| Biggest Cities in Florida | 0 | - | 4.20 | 67,326 |
| Biggest Cities in New York State | 0 | - | 4.29 | 55,804 |
| Biggest Cities in Texas | 0 | - | 4.26 | 111,325 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 43,915 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.91 | 91,831 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 513,181 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.81 | 52,327 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 108,986 |
| Biggest Cities by Language | 0 | - | 4.95 | 213,853 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.94 | 64,833 |
| Most Populous World Capitals | 0 | - | 4.92 | 148,416 |
| Biggest European Cities by Century | 0 | - | 4.98 | 118,767 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 50,905 |
| Megacities on a World Map | 0 | - | 4.98 | 220,632 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 91,032 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,832 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 63,391 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 43,706 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 84,251 |
| Biggest Cities in Germany | 0 | - | 4.95 | 262,868 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 151,146 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 31,933 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 154,839 |
| Biggest Cities in Europe | 0 | - | 4.76 | 464,183 |
| Megacities on an Empty Map | 0 | - | 4.95 | 87,518 |
| Biggest Cities in Sweden | 0 | - | 4.83 | 37,230 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 76,024 |
| Cities of China (With Some Help) | 0 | - | 4.86 | 28,189 |
| Biggest Cities in Michigan | 0 | - | 3.97 | 32,238 |
| Biggest English Cities by Century | 0 | - | 4.90 | 99,557 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.82 | 63,725 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,843 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.49 | 58,330 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 40,313 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 33,967 |
| Biggest Cities in Washington State | 0 | - | 4.43 | 27,912 |
| Biggest Cities in Pennsylvania | 0 | - | 4.14 | 42,654 |
| Biggest Cities in Ohio | 0 | - | 4.36 | 45,679 |
| Biggest Cities in Wisconsin | 0 | - | 4.45 | 23,365 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 61,537 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,775 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,752 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,554 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 36,836 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.67 | 56,289 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,505 |
| Biggest Cities in Arizona | 0 | - | 4.28 | 28,459 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.44 | 60,344 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,526 |
| Biggest Cities by Trait #1 | 0 | - | 4.45 | 43,059 |
| Biggest City by Region | 0 | - | 4.49 | 33,631 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 53,358 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.97 | 77,925 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,358 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 76,574 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 28,707 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,013 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 136,176 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 118,936 |
| Biggest City by Island | 0 | - | 4.57 | 45,764 |
| Biggest Cities in History | 0 | - | 4.50 | 80,195 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 67,949 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 62,915 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.37 | 37,195 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 40,116 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.25 | 91,151 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 52,587 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 36,011 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,568 |
| Biggest Cities in Japan | 0 | - | 4.66 | 75,401 |
| Biggest Cities in Russia | 0 | - | 4.49 | 76,378 |
| Biggest Cities in France | 0 | - | 4.76 | 199,304 |
| Biggest Cities in Spain | 0 | - | 4.50 | 153,455 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 50,152 |
| Biggest Cities in Poland | 0 | - | 4.56 | 48,055 |
| Biggest Cities in the UK | 0 | - | 4.46 | 93,405 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 32,918 |
| Biggest Cities in China | 0 | - | 4.64 | 138,419 |
| Cities of Ireland | 0 | - | 4.43 | 39,716 |
| Biggest Cities in Canada | 0 | - | 4.66 | 120,369 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,551 |
| Biggest Cities in India | 0 | - | 4.72 | 62,359 |
| Biggest Cities in Italy | 0 | - | 4.65 | 217,038 |
| Biggest Cities in New Jersey | 0 | - | 4.10 | 24,912 |
| Biggest Cities in Colorado | 0 | - | 4.04 | 29,893 |
| Biggest Cities in Virginia | 0 | - | 4.23 | 22,903 |
| Biggest Cities in Oregon | 0 | - | 4.10 | 18,719 |
| Biggest Cities in Alaska | 0 | - | 4.27 | 23,541 |
| Biggest Cities in Illinois | 0 | - | 4.33 | 24,408 |
| Biggest Cities in Louisiana | 0 | - | 4.12 | 18,195 |
| Biggest Cities in Massachusetts | 0 | - | 4.38 | 27,554 |
| Biggest Cities in Missouri | 0 | - | 4.21 | 15,813 |
| Biggest Cities in Tennessee | 0 | - | 4.24 | 19,097 |
| Biggest Cities in Indiana | 0 | - | 4.28 | 19,786 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 112,155 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 106,832 |
| Biggest Cities Starting With H | 0 | - | 4.55 | 97,600 |
| Biggest Cities Starting With L | 0 | - | 4.45 | 110,433 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 128,752 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 114,656 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 42,463 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,353 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 64,439 |
| All Cities in China with Population of 1 Million | 0 | - | 4.79 | 38,586 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 40,932 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 99,094 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,175 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,976 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,658 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 27,025 |
| Five Biggest Cities by Country | 0 | - | 4.67 | 152,404 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,106 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,236 |
| U.S. Cities by Hispanic Population | 0 | - | 4.26 | 24,542 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,227 |
| Northernmost Major City by Country | 0 | - | 4.56 | 30,862 |
| Flags to Largest Cities | 0 | - | 4.54 | 31,915 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 20,705 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 22,757 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 193,824 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,310,463 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 349,455 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 137,100 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 109,700 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.79 | 64,981 |
| Largest Cities in Alexander's Empire | 0 | - | 4.56 | 38,613 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 81,111 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,436 |
| Largest Nordic Cities on a Map | 0 | - | 4.76 | 23,236 |
| Biggest Urban Areas in the UK | 0 | - | 4.40 | 167,719 |
| Canadian Metro Areas over 100,000 People | 0 | - | 4.46 | 28,544 |
| Biggest Cities in Portugal | 0 | - | 4.41 | 18,784 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,811 |
| Biggest Cities in Georgia | 0 | - | 3.96 | 21,544 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 147,963 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 96,964 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 78,749 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 114,619 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 116,200 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 125,681 |
| Countries with Megacities | 0 | - | 4.99 | 196,915 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,278 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 97,792 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 95,171 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 63,752 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 247,585 |
| Biggest Cities in Colombia Quiz | 0 | - | 4.41 | 13,115 |
| Biggest Cities in Mexico | 0 | - | 4.55 | 29,216 |
| Saint Lucia Country Quiz | 0 | - | 4.66 | 16,285 |
| Biggest U.S. Cities A-Z | 0 | - | 4.63 | 122,073 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 116,937 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 66,041 |
| Countries of Europe by Population | 0 | - | 4.98 | 126,491 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 244,885 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 108,942 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,904 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 69,362 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,595 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 96,457 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 75,185 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 93,369 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 69,661 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,253 |
| Biggest Axis-Controlled Cities | 0 | - | 4.39 | 43,650 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 28,419 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,171 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,361 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.37 | 85,118 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.39 | 71,396 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.29 | 79,705 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.10 | 83,766 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 66,059 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.23 | 61,830 |
