| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 130,438 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 68,779 |
| 500 Biggest US Cities | 0 | - | 4.84 | 96,090 |
| Biggest Cities in the World | 0 | - | 4.89 | 677,647 |
| Biggest Cities in Asia | 0 | - | 4.94 | 94,892 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 42,887 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 197,265 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 108,198 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 366,920 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.90 | 28,308 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 301,109 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 95,988 |
| Biggest Cities in the United States | 0 | - | 4.92 | 807,506 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 320,540 |
| Biggest City by Time Zone | 0 | - | 4.82 | 53,253 |
| Biggest City in Every Country | 0 | - | 4.97 | 77,394 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 167,004 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 90,701 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 94,281 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 53,553 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.85 | 70,020 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 64,081 |
| Biggest Cities in Deserts | 0 | - | 4.93 | 41,948 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 58,975 |
| Biggest Cities in California | 0 | - | 4.35 | 129,696 |
| Biggest Cities in Florida | 0 | - | 4.19 | 67,012 |
| Biggest Cities in New York State | 0 | - | 4.29 | 55,523 |
| Biggest Cities in Texas | 0 | - | 4.26 | 110,802 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.82 | 43,641 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 90,628 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 508,278 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 108,089 |
| Biggest Cities by Language | 0 | - | 4.95 | 212,311 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 64,432 |
| Most Populous World Capitals | 0 | - | 4.92 | 146,419 |
| Biggest European Cities by Century | 0 | - | 4.97 | 117,606 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 50,509 |
| Megacities on a World Map | 0 | - | 4.98 | 218,964 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 90,316 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,352 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 62,665 |
| Biggest Cities in France - Extreme | 0 | - | 4.88 | 42,879 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 82,828 |
| Biggest Cities in Germany | 0 | - | 4.94 | 260,602 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 149,881 |
| Biggest Cities in Michigan | 0 | - | 3.97 | 32,125 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 31,706 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 153,596 |
| Biggest Cities in Europe | 0 | - | 4.74 | 456,247 |
| Megacities on an Empty Map | 0 | - | 4.96 | 86,711 |
| Biggest Cities in Sweden | 0 | - | 4.82 | 36,970 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 74,523 |
| Cities of China (With Some Help) | 0 | - | 4.86 | 27,970 |
| Biggest English Cities by Century | 0 | - | 4.89 | 98,734 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 63,044 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,040 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.49 | 55,464 |
| U.S. States by Second Most Populous City | 0 | - | 4.44 | 40,014 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 33,762 |
| Biggest Cities in Washington State | 0 | - | 4.43 | 27,736 |
| Biggest Cities in Pennsylvania | 0 | - | 4.14 | 42,491 |
| Biggest Cities in Ohio | 0 | - | 4.36 | 45,479 |
| Biggest Cities in Wisconsin | 0 | - | 4.45 | 23,227 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.43 | 61,231 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,620 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,285 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,163 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.64 | 36,436 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 55,971 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,098 |
| Biggest Cities in Arizona | 0 | - | 4.28 | 28,228 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.46 | 59,950 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,287 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 42,865 |
| Biggest City by Region | 0 | - | 4.48 | 33,196 |
| Most Populous 2nd Cities | 0 | - | 4.72 | 52,967 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 70,221 |
| Largest World Capitals with Exceptions | 0 | - | 4.71 | 50,194 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 67,620 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 28,569 |
| Ten Northernmost Megacities | 0 | - | 4.49 | 46,788 |
| Ten Southernmost Megacities | 0 | - | 4.80 | 45,977 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 135,645 |
| Biggest European Cities by Letter | 0 | - | 4.64 | 118,019 |
| Biggest City by Island | 0 | - | 4.57 | 45,593 |
| Biggest Cities in History | 0 | - | 4.49 | 79,386 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 67,630 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.59 | 62,701 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.37 | 36,776 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 39,838 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.24 | 88,919 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 52,350 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 35,426 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.79 | 51,706 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,266 |
| Biggest Cities in Japan | 0 | - | 4.65 | 74,849 |
| Biggest Cities in Russia | 0 | - | 4.49 | 75,868 |
| Biggest Cities in France | 0 | - | 4.76 | 197,204 |
| Biggest Cities in Spain | 0 | - | 4.50 | 152,094 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 49,635 |
| Biggest Cities in Poland | 0 | - | 4.56 | 47,580 |
| Biggest Cities in the UK | 0 | - | 4.45 | 92,471 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 32,488 |
| Biggest Cities in China | 0 | - | 4.64 | 136,590 |
| Cities of Ireland | 0 | - | 4.43 | 39,423 |
| Biggest Cities in Canada | 0 | - | 4.67 | 119,476 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,232 |
| Biggest Cities in India | 0 | - | 4.72 | 61,893 |
| Biggest Cities in Italy | 0 | - | 4.65 | 215,204 |
| Biggest Cities in New Jersey | 0 | - | 4.10 | 24,753 |
| Biggest Cities in Colorado | 0 | - | 4.04 | 29,743 |
| Biggest Cities in Virginia | 0 | - | 4.23 | 22,760 |
| Biggest Cities in Oregon | 0 | - | 4.10 | 18,580 |
| Biggest Cities in Alaska | 0 | - | 4.27 | 23,378 |
| Biggest Cities in Illinois | 0 | - | 4.33 | 24,245 |
| Biggest Cities in Louisiana | 0 | - | 4.10 | 18,081 |
| Biggest Cities in Massachusetts | 0 | - | 4.38 | 27,354 |
| Biggest Cities in Missouri | 0 | - | 4.20 | 15,729 |
| Biggest Cities in Tennessee | 0 | - | 4.24 | 19,004 |
| Biggest Cities in Indiana | 0 | - | 4.28 | 19,666 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 110,981 |
| Biggest Cities Starting With D | 0 | - | 4.48 | 106,086 |
| Biggest Cities Starting With H | 0 | - | 4.53 | 96,652 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 109,479 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 127,412 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 113,425 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 42,354 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,006 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.74 | 63,348 |
| All Cities in China with Population of 1 Million | 0 | - | 4.77 | 37,780 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 40,386 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 98,405 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 69,896 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,835 |
| Biggest Nordic Cities | 0 | - | 4.37 | 59,508 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 26,955 |
| Five Biggest Cities by Country | 0 | - | 4.66 | 150,958 |
| Biggest City by Region #2 | 0 | - | 4.45 | 22,836 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,118 |
| U.S. Cities by Hispanic Population | 0 | - | 4.26 | 24,436 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,040 |
| Northernmost Major City by Country | 0 | - | 4.55 | 30,656 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 20,514 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 22,654 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 191,985 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,300,892 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,311 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 136,049 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 108,734 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.79 | 64,607 |
| Largest Cities in Alexander's Empire | 0 | - | 4.56 | 38,479 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 80,084 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,313 |
| Largest Nordic Cities on a Map | 0 | - | 4.72 | 22,763 |
| Biggest Urban Areas in the UK | 0 | - | 4.40 | 167,033 |
| Canadian Metro Areas over 100,000 People | 0 | - | 4.45 | 28,346 |
| Biggest Cities in Portugal | 0 | - | 4.41 | 18,657 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,741 |
| Biggest Cities in Georgia | 0 | - | 3.96 | 21,426 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 146,475 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 96,074 |
| Biggest Cities Starting With K | 0 | - | 4.29 | 78,142 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 113,716 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 115,289 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 123,964 |
| Countries with Megacities | 0 | - | 4.99 | 194,468 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,199 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,734 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,515 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,600 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 244,743 |
| Biggest Cities in Colombia Quiz | 0 | - | 4.41 | 12,944 |
| Biggest Cities in Mexico | 0 | - | 4.54 | 28,709 |
| Saint Lucia Country Quiz | 0 | - | 4.65 | 16,127 |
| Biggest U.S. Cities A-Z | 0 | - | 4.59 | 121,626 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 116,206 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,253 |
| Countries of Europe by Population | 0 | - | 4.98 | 124,340 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,228 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,144 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,439 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,326 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,214 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 95,528 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 74,363 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 92,498 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 64,370 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,062 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 27,588 |
| Biggest Cities by Trait #2 | 0 | - | 4.37 | 14,062 |
| Flags to Largest Cities | 0 | - | 4.57 | 30,733 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,186 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.36 | 82,777 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.36 | 69,273 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.28 | 77,585 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.10 | 83,251 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 65,717 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.23 | 61,470 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.22 | 59,747 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 67,148 |
