| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 130,899 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 68,993 |
| 500 Biggest US Cities | 0 | - | 4.85 | 96,623 |
| Biggest Cities in the World | 0 | - | 4.89 | 680,169 |
| Biggest Cities in Asia | 0 | - | 4.94 | 95,159 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 43,028 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 31,761 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 197,704 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 108,506 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 367,982 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.90 | 28,508 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 301,911 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 96,409 |
| Biggest Cities in the United States | 0 | - | 4.92 | 809,790 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 321,204 |
| Biggest City by Time Zone | 0 | - | 4.84 | 53,647 |
| Biggest City in Every Country | 0 | - | 4.97 | 77,853 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 167,829 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 91,085 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 94,849 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 63,710 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.85 | 70,477 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 64,444 |
| Biggest Cities in Deserts | 0 | - | 4.93 | 42,076 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 59,167 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,058 |
| Biggest Cities in California | 0 | - | 4.35 | 129,850 |
| Biggest Cities in Florida | 0 | - | 4.19 | 67,101 |
| Biggest Cities in New York State | 0 | - | 4.29 | 55,584 |
| Biggest Cities in Texas | 0 | - | 4.26 | 110,929 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.82 | 43,713 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.90 | 91,031 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 509,645 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 108,283 |
| Biggest Cities by Language | 0 | - | 4.95 | 212,632 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 64,553 |
| Most Populous World Capitals | 0 | - | 4.92 | 146,920 |
| Biggest European Cities by Century | 0 | - | 4.98 | 117,846 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 50,618 |
| Megacities on a World Map | 0 | - | 4.98 | 219,318 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 90,524 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,489 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 62,851 |
| Biggest Cities in France - Extreme | 0 | - | 4.88 | 43,103 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 83,283 |
| Biggest Cities in Germany | 0 | - | 4.95 | 261,214 |
| Biggest Cities in Washington State | 0 | - | 4.43 | 27,782 |
| Biggest Cities in Pennsylvania | 0 | - | 4.14 | 42,528 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 150,250 |
| Biggest Cities in Ohio | 0 | - | 4.36 | 45,522 |
| Biggest Cities in Wisconsin | 0 | - | 4.45 | 23,252 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 154,068 |
| Biggest Cities in Europe | 0 | - | 4.75 | 459,247 |
| Megacities on an Empty Map | 0 | - | 4.96 | 86,940 |
| Biggest Cities in Sweden | 0 | - | 4.83 | 37,061 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 74,929 |
| Cities of China (With Some Help) | 0 | - | 4.86 | 28,026 |
| Biggest Cities in Michigan | 0 | - | 3.97 | 32,156 |
| Biggest English Cities by Century | 0 | - | 4.89 | 99,102 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 63,339 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,413 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.49 | 55,591 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 40,096 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 33,809 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.43 | 61,325 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,663 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,423 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,320 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.64 | 36,552 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,051 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,203 |
| Biggest Cities in New Jersey | 0 | - | 4.10 | 24,788 |
| Biggest Cities in Colorado | 0 | - | 4.04 | 29,782 |
| Biggest Cities in Virginia | 0 | - | 4.23 | 22,798 |
| Biggest Cities in Oregon | 0 | - | 4.10 | 18,610 |
| Biggest Cities in Alaska | 0 | - | 4.27 | 23,411 |
| Biggest Cities in Illinois | 0 | - | 4.33 | 24,287 |
| Biggest Cities in Louisiana | 0 | - | 4.12 | 18,109 |
| Biggest Cities in Massachusetts | 0 | - | 4.38 | 27,413 |
| Biggest Cities in Missouri | 0 | - | 4.20 | 15,749 |
| Biggest Cities in Tennessee | 0 | - | 4.24 | 19,027 |
| Biggest Cities in Indiana | 0 | - | 4.28 | 19,697 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.44 | 60,063 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,354 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 42,912 |
| Biggest City by Region | 0 | - | 4.49 | 33,471 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 53,114 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 70,357 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,249 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 73,381 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 28,608 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 46,854 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 135,788 |
| Biggest European Cities by Letter | 0 | - | 4.65 | 118,178 |
| Biggest City by Island | 0 | - | 4.57 | 45,630 |
| Biggest Cities in History | 0 | - | 4.49 | 79,601 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 67,734 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.64 | 62,757 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.37 | 36,891 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 39,931 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.24 | 89,590 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 52,415 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 35,597 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.80 | 51,876 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,340 |
| Biggest Cities in Japan | 0 | - | 4.66 | 74,972 |
| Biggest Cities in Russia | 0 | - | 4.49 | 76,004 |
| Biggest Cities in France | 0 | - | 4.76 | 197,927 |
| Biggest Cities in Spain | 0 | - | 4.50 | 152,456 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 49,770 |
| Biggest Cities in Poland | 0 | - | 4.56 | 47,734 |
| Biggest Cities in the UK | 0 | - | 4.45 | 92,736 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 32,610 |
| Biggest Cities in China | 0 | - | 4.64 | 137,254 |
| Cities of Ireland | 0 | - | 4.43 | 39,486 |
| Biggest Cities in Canada | 0 | - | 4.67 | 119,715 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,319 |
| Biggest Cities in India | 0 | - | 4.72 | 62,044 |
| Biggest Cities in Italy | 0 | - | 4.66 | 215,678 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 111,301 |
| Biggest Cities Starting With D | 0 | - | 4.48 | 106,332 |
| Biggest Cities Starting With H | 0 | - | 4.53 | 96,925 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 109,771 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 127,772 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 113,971 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 42,388 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,104 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 63,660 |
| All Cities in China with Population of 1 Million | 0 | - | 4.77 | 37,931 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 40,556 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 98,601 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 69,965 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,867 |
| Biggest Nordic Cities | 0 | - | 4.37 | 59,549 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 26,977 |
| Five Biggest Cities by Country | 0 | - | 4.66 | 151,280 |
| Biggest City by Region #2 | 0 | - | 4.45 | 23,015 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,156 |
| U.S. Cities by Hispanic Population | 0 | - | 4.26 | 24,468 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,081 |
| Northernmost Major City by Country | 0 | - | 4.55 | 30,707 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 20,563 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 22,673 |
| Biggest Cities in Georgia | 0 | - | 3.96 | 21,452 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 192,539 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,303,739 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,813 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 136,338 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 108,973 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.80 | 64,710 |
| Largest Cities in Alexander's Empire | 0 | - | 4.56 | 38,525 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 80,352 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,338 |
| Largest Nordic Cities on a Map | 0 | - | 4.73 | 22,906 |
| Biggest Urban Areas in the UK | 0 | - | 4.40 | 167,220 |
| Canadian Metro Areas over 100,000 People | 0 | - | 4.45 | 28,396 |
| Biggest Cities in Portugal | 0 | - | 4.41 | 18,693 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,754 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 147,124 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 96,297 |
| Biggest Cities Starting With K | 0 | - | 4.29 | 78,339 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 113,991 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 115,542 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,408 |
| Countries with Megacities | 0 | - | 4.99 | 195,098 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,751 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 97,007 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,891 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,865 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,514 |
| Biggest Cities in Colombia Quiz | 0 | - | 4.41 | 13,001 |
| Biggest Cities in Mexico | 0 | - | 4.54 | 28,875 |
| Saint Lucia Country Quiz | 0 | - | 4.66 | 16,166 |
| Biggest U.S. Cities A-Z | 0 | - | 4.59 | 121,746 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 116,451 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,483 |
| Countries of Europe by Population | 0 | - | 4.98 | 124,882 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,700 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,342 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,539 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,521 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,331 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 95,794 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 74,585 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 92,742 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 64,552 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,115 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 28,010 |
| Biggest Cities by Trait #2 | 0 | - | 4.37 | 14,090 |
| Flags to Largest Cities | 0 | - | 4.57 | 31,023 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,223 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.36 | 82,929 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.36 | 69,404 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.28 | 77,730 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.10 | 83,372 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 65,807 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.23 | 61,563 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.22 | 59,818 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 67,234 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 204,188 |
