| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 132,514 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 69,525 |
| 500 Biggest US Cities | 0 | - | 4.87 | 98,210 |
| Biggest Cities in the World | 0 | - | 4.89 | 687,363 |
| Biggest Cities in Asia | 0 | - | 4.94 | 95,937 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 43,470 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 41,754 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 199,298 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 109,338 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 371,432 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 29,097 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 304,252 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 97,556 |
| Biggest Cities in the United States | 0 | - | 4.93 | 821,449 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 334,135 |
| Biggest City by Time Zone | 0 | - | 4.84 | 54,447 |
| Biggest City in Every Country | 0 | - | 4.97 | 78,884 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 169,904 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 92,144 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 96,340 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 64,978 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.86 | 71,517 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 65,303 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 52,621 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.67 | 56,323 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,561 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 42,389 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 59,747 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,389 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 55,270 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 43,972 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.91 | 91,966 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 513,818 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.81 | 52,414 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 109,050 |
| Biggest Cities by Language | 0 | - | 4.95 | 213,998 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.94 | 64,877 |
| Most Populous World Capitals | 0 | - | 4.92 | 148,573 |
| Biggest European Cities by Century | 0 | - | 4.98 | 118,864 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 50,951 |
| Megacities on a World Map | 0 | - | 4.98 | 220,779 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 91,108 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,889 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 63,480 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 43,847 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 84,434 |
| Biggest Cities in Germany | 0 | - | 4.95 | 263,205 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 151,285 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 31,975 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 154,943 |
| Biggest Cities in Europe | 0 | - | 4.75 | 465,105 |
| Megacities on an Empty Map | 0 | - | 4.95 | 87,598 |
| Biggest Cities in Sweden | 0 | - | 4.82 | 37,255 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 76,294 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,222 |
| Biggest English Cities by Century | 0 | - | 4.90 | 99,606 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.82 | 63,771 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,888 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.50 | 59,986 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 40,349 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 33,991 |
| Biggest Cities in Washington State | 0 | - | 4.44 | 29,140 |
| Biggest Cities in California | 0 | - | 4.35 | 130,465 |
| Biggest Cities in Florida | 0 | - | 4.20 | 67,379 |
| Biggest Cities in New York State | 0 | - | 4.29 | 55,856 |
| Biggest Cities in Pennsylvania | 0 | - | 4.14 | 42,686 |
| Biggest Cities in Ohio | 0 | - | 4.36 | 45,713 |
| Biggest Cities in Texas | 0 | - | 4.26 | 111,400 |
| Biggest Cities in Wisconsin | 0 | - | 4.45 | 23,393 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 61,570 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,788 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,813 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,594 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 36,882 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,416 |
| Biggest Cities in Mexico | 0 | - | 4.55 | 29,276 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 459,174 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 60,406 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,558 |
| Biggest Cities by Trait #1 | 0 | - | 4.45 | 43,084 |
| Biggest City by Region | 0 | - | 4.49 | 33,659 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 53,393 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.97 | 78,000 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,368 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 76,681 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 28,719 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,037 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 136,230 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 118,997 |
| Biggest City by Island | 0 | - | 4.57 | 45,779 |
| Biggest Cities in History | 0 | - | 4.50 | 80,265 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 67,972 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 62,943 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.37 | 37,245 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.49 | 40,136 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.25 | 91,420 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 36,083 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,601 |
| Biggest Cities in Japan | 0 | - | 4.66 | 75,617 |
| Biggest Cities in Russia | 0 | - | 4.49 | 76,428 |
| Biggest Cities in France | 0 | - | 4.76 | 199,723 |
| Biggest Cities in Spain | 0 | - | 4.50 | 153,628 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 50,205 |
| Biggest Cities in Poland | 0 | - | 4.57 | 48,105 |
| Biggest Cities in the UK | 0 | - | 4.46 | 93,511 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 32,970 |
| Biggest Cities in China | 0 | - | 4.64 | 138,740 |
| Cities of Ireland | 0 | - | 4.43 | 39,742 |
| Biggest Cities in Canada | 0 | - | 4.66 | 120,480 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,588 |
| Biggest Cities in India | 0 | - | 4.72 | 62,416 |
| Biggest Cities in Italy | 0 | - | 4.65 | 217,283 |
| Biggest Cities in New Jersey | 0 | - | 4.10 | 24,935 |
| Biggest Cities in Colorado | 0 | - | 4.04 | 29,924 |
| Biggest Cities in Virginia | 0 | - | 4.23 | 22,943 |
| Biggest Cities in Oregon | 0 | - | 4.10 | 18,741 |
| Biggest Cities in Alaska | 0 | - | 4.27 | 23,573 |
| Biggest Cities in Arizona | 0 | - | 4.28 | 28,502 |
| Biggest Cities in Illinois | 0 | - | 4.33 | 24,451 |
| Biggest Cities in Louisiana | 0 | - | 4.12 | 18,224 |
| Biggest Cities in Massachusetts | 0 | - | 4.38 | 27,593 |
| Biggest Cities in Michigan | 0 | - | 3.97 | 32,263 |
| Biggest Cities in Missouri | 0 | - | 4.21 | 15,831 |
| Biggest Cities in Tennessee | 0 | - | 4.24 | 19,121 |
| Biggest Cities in Indiana | 0 | - | 4.28 | 20,315 |
| Biggest Cities Starting With A | 0 | - | 4.56 | 112,245 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 106,901 |
| Biggest Cities Starting With H | 0 | - | 4.55 | 97,696 |
| Biggest Cities Starting With L | 0 | - | 4.45 | 110,540 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 128,886 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 114,752 |
| U.S. State Flags | 0 | - | 4.88 | 136,442 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 57,830 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 42,477 |
| Biggest Cities in Colombia Quiz | 0 | - | 4.41 | 13,129 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 64,582 |
| All Cities in China with Population of 1 Million | 0 | - | 4.79 | 38,665 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 41,015 |
| US States and State Capitals Quiz | 0 | - | 4.99 | 119,784 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 76,823 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 99,495 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,208 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,987 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,674 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 27,034 |
| Five Biggest Cities by Country | 0 | - | 4.66 | 152,522 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,119 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,249 |
| U.S. Cities by Hispanic Population | 0 | - | 4.26 | 24,555 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,253 |
| Northernmost Major City by Country | 0 | - | 4.56 | 30,878 |
| Flags to Largest Cities | 0 | - | 4.54 | 31,984 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 20,725 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 22,769 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 194,011 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,311,585 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 349,657 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 137,231 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 109,831 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.79 | 65,015 |
| Largest Cities in Alexander's Empire | 0 | - | 4.56 | 38,623 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 81,231 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,449 |
| Largest Nordic Cities on a Map | 0 | - | 4.76 | 23,302 |
| Biggest Urban Areas in the UK | 0 | - | 4.40 | 167,816 |
| Canadian Metro Areas over 100,000 People | 0 | - | 4.46 | 28,559 |
| Biggest Cities in Portugal | 0 | - | 4.41 | 18,802 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,820 |
| Biggest Cities in Georgia | 0 | - | 3.96 | 21,578 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 148,081 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 97,016 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 78,804 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 114,702 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 116,296 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 125,875 |
| Countries with Megacities | 0 | - | 4.99 | 197,173 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,508 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 97,915 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 95,353 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 63,888 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 247,883 |
| Saint Lucia Country Quiz | 0 | - | 4.66 | 16,312 |
| Biggest U.S. Cities A-Z | 0 | - | 4.63 | 122,157 |
| Which City in Canada? | 0 | - | 4.89 | 45,201 |
| Countries Closest to United States A-Z | 0 | - | 4.84 | 107,396 |
| Hawaiian Islands | 0 | - | 4.85 | 38,493 |
| U.S. States that Border Canada | 0 | - | 4.90 | 165,855 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 117,007 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 66,126 |
| Countries of Europe by Population | 0 | - | 4.98 | 126,826 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 245,085 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 109,050 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,975 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 69,702 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,706 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 96,641 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 75,360 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 93,500 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 70,082 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,270 |
