| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 130,867 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 68,981 |
| 500 Biggest US Cities | 0 | - | 4.85 | 96,550 |
| Biggest Cities in the World | 0 | - | 4.89 | 679,907 |
| Biggest Cities in Asia | 0 | - | 4.94 | 95,122 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 43,017 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 197,650 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 108,469 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 367,871 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.90 | 28,474 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 301,830 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 96,342 |
| Biggest Cities in the United States | 0 | - | 4.92 | 809,572 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 321,123 |
| Biggest City by Time Zone | 0 | - | 4.84 | 53,604 |
| Biggest City in Every Country | 0 | - | 4.97 | 77,799 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 167,740 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 91,030 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 94,781 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 63,580 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.85 | 70,414 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 64,398 |
| Biggest Cities in Deserts | 0 | - | 4.93 | 42,070 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 59,148 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,039 |
| Biggest Cities in Washington State | 0 | - | 4.43 | 27,778 |
| Biggest Cities in California | 0 | - | 4.35 | 129,834 |
| Biggest Cities in Florida | 0 | - | 4.19 | 67,093 |
| Biggest Cities in New York State | 0 | - | 4.29 | 55,575 |
| Biggest Cities in Pennsylvania | 0 | - | 4.14 | 42,521 |
| Biggest Cities in Ohio | 0 | - | 4.36 | 45,518 |
| Biggest Cities in Texas | 0 | - | 4.26 | 110,909 |
| Biggest Cities in Wisconsin | 0 | - | 4.45 | 23,248 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.82 | 43,706 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.90 | 90,992 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 509,462 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 108,252 |
| Biggest Cities by Language | 0 | - | 4.95 | 212,579 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 64,541 |
| Most Populous World Capitals | 0 | - | 4.92 | 146,865 |
| Biggest European Cities by Century | 0 | - | 4.97 | 117,821 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 50,597 |
| Megacities on a World Map | 0 | - | 4.98 | 219,287 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 90,510 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,476 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 62,834 |
| Biggest Cities in France - Extreme | 0 | - | 4.88 | 43,080 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 83,207 |
| Biggest Cities in Germany | 0 | - | 4.95 | 261,147 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 150,207 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 153,886 |
| Biggest Cities in Europe | 0 | - | 4.75 | 458,978 |
| Megacities on an Empty Map | 0 | - | 4.96 | 86,918 |
| Biggest Cities in Sweden | 0 | - | 4.83 | 37,042 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 74,890 |
| Cities of China (With Some Help) | 0 | - | 4.86 | 28,019 |
| Biggest Cities in New Jersey | 0 | - | 4.10 | 24,784 |
| Biggest Cities in Colorado | 0 | - | 4.04 | 29,777 |
| Biggest Cities in Virginia | 0 | - | 4.23 | 22,787 |
| Biggest Cities in Oregon | 0 | - | 4.10 | 18,606 |
| Biggest Cities in Alaska | 0 | - | 4.27 | 23,410 |
| Biggest Cities in Arizona | 0 | - | 4.28 | 28,282 |
| Biggest Cities in Illinois | 0 | - | 4.33 | 24,281 |
| Biggest Cities in Louisiana | 0 | - | 4.12 | 18,108 |
| Biggest Cities in Massachusetts | 0 | - | 4.38 | 27,407 |
| Biggest Cities in Michigan | 0 | - | 3.97 | 32,140 |
| Biggest Cities in Missouri | 0 | - | 4.20 | 15,749 |
| Biggest Cities in Tennessee | 0 | - | 4.24 | 19,026 |
| Biggest Cities in Indiana | 0 | - | 4.28 | 19,693 |
| Biggest English Cities by Century | 0 | - | 4.89 | 99,079 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 63,267 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,313 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.49 | 55,573 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 40,089 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 33,803 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.43 | 61,315 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,657 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,408 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,311 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.64 | 36,537 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,039 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,189 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.44 | 60,051 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,345 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 42,911 |
| Biggest City by Region | 0 | - | 4.49 | 33,456 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 53,102 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 70,334 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,243 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 72,046 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 28,607 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 46,848 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 135,768 |
| Biggest European Cities by Letter | 0 | - | 4.65 | 118,160 |
| Biggest City by Island | 0 | - | 4.57 | 45,626 |
| Biggest Cities in History | 0 | - | 4.49 | 79,577 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 67,724 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.64 | 62,753 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.37 | 36,881 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 39,917 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.24 | 89,505 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 52,407 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 35,577 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.80 | 51,851 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,334 |
| Biggest Cities in Japan | 0 | - | 4.66 | 74,958 |
| Biggest Cities in Russia | 0 | - | 4.49 | 75,984 |
| Biggest Cities in France | 0 | - | 4.76 | 197,857 |
| Biggest Cities in Spain | 0 | - | 4.50 | 152,414 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 49,763 |
| Biggest Cities in Poland | 0 | - | 4.56 | 47,721 |
| Biggest Cities in the UK | 0 | - | 4.45 | 92,698 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 32,591 |
| Biggest Cities in China | 0 | - | 4.64 | 137,213 |
| Cities of Ireland | 0 | - | 4.43 | 39,479 |
| Biggest Cities in Canada | 0 | - | 4.67 | 119,697 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,303 |
| Biggest Cities in India | 0 | - | 4.72 | 62,014 |
| Biggest Cities in Italy | 0 | - | 4.66 | 215,625 |
| Biggest Cities in Georgia | 0 | - | 3.96 | 21,450 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 111,269 |
| Biggest Cities Starting With D | 0 | - | 4.48 | 106,313 |
| Biggest Cities Starting With H | 0 | - | 4.53 | 96,898 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 109,736 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 127,734 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 113,947 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 42,384 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,091 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 63,621 |
| All Cities in China with Population of 1 Million | 0 | - | 4.77 | 37,917 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 40,535 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 98,580 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 69,961 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,862 |
| Biggest Nordic Cities | 0 | - | 4.37 | 59,542 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 26,976 |
| Five Biggest Cities by Country | 0 | - | 4.66 | 151,243 |
| Biggest City by Region #2 | 0 | - | 4.45 | 23,012 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,154 |
| U.S. Cities by Hispanic Population | 0 | - | 4.26 | 24,461 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,076 |
| Northernmost Major City by Country | 0 | - | 4.55 | 30,702 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 20,554 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 22,668 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 192,479 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,303,391 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,761 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 136,308 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 108,946 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.80 | 64,703 |
| Largest Cities in Alexander's Empire | 0 | - | 4.56 | 38,517 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 80,329 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,335 |
| Largest Nordic Cities on a Map | 0 | - | 4.73 | 22,890 |
| Biggest Urban Areas in the UK | 0 | - | 4.40 | 167,195 |
| Canadian Metro Areas over 100,000 People | 0 | - | 4.45 | 28,390 |
| Biggest Cities in Portugal | 0 | - | 4.41 | 18,687 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,753 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 147,096 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 96,279 |
| Biggest Cities Starting With K | 0 | - | 4.29 | 78,320 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 113,966 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 115,515 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,353 |
| Countries with Megacities | 0 | - | 4.99 | 195,038 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,692 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,986 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,852 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,830 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,417 |
| Biggest Cities in Colombia Quiz | 0 | - | 4.41 | 12,995 |
| Biggest Cities in Mexico | 0 | - | 4.54 | 28,847 |
| Saint Lucia Country Quiz | 0 | - | 4.66 | 16,161 |
| Biggest U.S. Cities A-Z | 0 | - | 4.59 | 121,729 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 116,390 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,448 |
| Countries of Europe by Population | 0 | - | 4.98 | 124,827 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,653 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,315 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,529 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,501 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,317 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 95,765 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 74,567 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 92,722 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 64,532 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,111 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 27,994 |
| Biggest Cities by Trait #2 | 0 | - | 4.37 | 14,089 |
| Flags to Largest Cities | 0 | - | 4.57 | 30,872 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,218 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.36 | 82,909 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.36 | 69,389 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.28 | 77,710 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.10 | 83,357 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 65,796 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.23 | 61,548 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.22 | 59,807 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 67,218 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 204,151 |
