| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 130,320 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 68,715 |
| 500 Biggest US Cities | 0 | - | 4.84 | 95,940 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 31,687 |
| Biggest Cities in the World | 0 | - | 4.89 | 676,901 |
| Biggest Cities in Asia | 0 | - | 4.94 | 94,771 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 42,838 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 197,113 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 108,092 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 366,597 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.90 | 28,252 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 300,868 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 95,862 |
| Biggest Cities in the United States | 0 | - | 4.92 | 806,790 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 320,367 |
| Biggest City by Time Zone | 0 | - | 4.82 | 53,146 |
| Biggest City in Every Country | 0 | - | 4.97 | 77,279 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 166,781 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 90,610 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 94,159 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 53,451 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.85 | 69,885 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 63,985 |
| Biggest Cities in Deserts | 0 | - | 4.93 | 41,913 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 58,906 |
| Biggest Cities in Washington State | 0 | - | 4.43 | 27,724 |
| Biggest Cities in California | 0 | - | 4.35 | 129,627 |
| Biggest Cities in Florida | 0 | - | 4.19 | 66,981 |
| Biggest Cities in New York State | 0 | - | 4.29 | 55,500 |
| Biggest Cities in Ohio | 0 | - | 4.36 | 45,455 |
| Biggest Cities in Texas | 0 | - | 4.26 | 110,754 |
| Biggest Cities in Wisconsin | 0 | - | 4.45 | 23,213 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.82 | 43,618 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 90,457 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 507,886 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 108,033 |
| Biggest Cities by Language | 0 | - | 4.95 | 212,219 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 64,411 |
| Most Populous World Capitals | 0 | - | 4.92 | 146,258 |
| Biggest European Cities by Century | 0 | - | 4.97 | 117,557 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 50,465 |
| Megacities on a World Map | 0 | - | 4.98 | 218,841 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 90,254 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,316 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 62,591 |
| Biggest Cities in France - Extreme | 0 | - | 4.88 | 42,815 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 82,672 |
| Biggest Cities in Germany | 0 | - | 4.94 | 260,415 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 149,778 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 153,528 |
| Biggest Cities in Europe | 0 | - | 4.78 | 454,438 |
| Megacities on an Empty Map | 0 | - | 4.96 | 86,655 |
| Biggest Cities in Sweden | 0 | - | 4.83 | 36,947 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 74,415 |
| Cities of China (With Some Help) | 0 | - | 4.86 | 27,958 |
| Biggest Cities in New Jersey | 0 | - | 4.10 | 24,740 |
| Biggest Cities in Colorado | 0 | - | 4.04 | 29,729 |
| Biggest Cities in Virginia | 0 | - | 4.23 | 22,747 |
| Biggest Cities in Oregon | 0 | - | 4.10 | 18,573 |
| Biggest Cities in Alaska | 0 | - | 4.27 | 23,368 |
| Biggest Cities in Arizona | 0 | - | 4.28 | 28,211 |
| Biggest Cities in Illinois | 0 | - | 4.33 | 24,229 |
| Biggest Cities in Louisiana | 0 | - | 4.10 | 18,070 |
| Biggest Cities in Massachusetts | 0 | - | 4.38 | 27,327 |
| Biggest Cities in Michigan | 0 | - | 3.97 | 32,113 |
| Biggest Cities in Missouri | 0 | - | 4.20 | 15,722 |
| Biggest Cities in Tennessee | 0 | - | 4.24 | 18,995 |
| Biggest Cities in Indiana | 0 | - | 4.28 | 19,644 |
| Biggest English Cities by Century | 0 | - | 4.89 | 98,689 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.82 | 63,010 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,008 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.49 | 55,423 |
| U.S. States by Second Most Populous City | 0 | - | 4.44 | 39,992 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 33,747 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.43 | 61,204 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,601 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,245 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,094 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.64 | 36,411 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 55,950 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,073 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.46 | 59,924 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,261 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 42,843 |
| Biggest City by Region | 0 | - | 4.48 | 33,173 |
| Most Populous 2nd Cities | 0 | - | 4.72 | 52,929 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 70,187 |
| Largest World Capitals with Exceptions | 0 | - | 4.71 | 50,184 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 67,547 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 28,560 |
| Ten Northernmost Megacities | 0 | - | 4.49 | 46,778 |
| Ten Southernmost Megacities | 0 | - | 4.80 | 45,957 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 135,599 |
| Biggest European Cities by Letter | 0 | - | 4.64 | 117,981 |
| Biggest City by Island | 0 | - | 4.57 | 45,580 |
| Biggest Cities in History | 0 | - | 4.49 | 79,319 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 67,603 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.59 | 62,681 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.37 | 36,742 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 39,808 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.24 | 88,767 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 52,326 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 35,376 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.79 | 51,653 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,252 |
| Biggest Cities in Japan | 0 | - | 4.65 | 74,805 |
| Biggest Cities in Russia | 0 | - | 4.49 | 75,832 |
| Biggest Cities in France | 0 | - | 4.76 | 197,055 |
| Biggest Cities in Spain | 0 | - | 4.50 | 151,994 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 49,594 |
| Biggest Cities in Poland | 0 | - | 4.56 | 47,535 |
| Biggest Cities in the UK | 0 | - | 4.45 | 92,395 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 32,451 |
| Biggest Cities in China | 0 | - | 4.64 | 136,440 |
| Cities of Ireland | 0 | - | 4.43 | 39,393 |
| Biggest Cities in Canada | 0 | - | 4.67 | 119,405 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,214 |
| Biggest Cities in India | 0 | - | 4.71 | 61,849 |
| Biggest Cities in Italy | 0 | - | 4.65 | 215,055 |
| Biggest Cities in Georgia | 0 | - | 3.96 | 21,411 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 110,919 |
| Biggest Cities Starting With D | 0 | - | 4.48 | 106,034 |
| Biggest Cities Starting With H | 0 | - | 4.53 | 96,574 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 109,405 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 127,328 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 113,358 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 42,346 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 47,982 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.74 | 63,263 |
| All Cities in China with Population of 1 Million | 0 | - | 4.77 | 37,744 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 40,335 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 98,353 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 69,876 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,823 |
| Biggest Nordic Cities | 0 | - | 4.37 | 59,496 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 26,945 |
| Five Biggest Cities by Country | 0 | - | 4.66 | 150,836 |
| Biggest City by Region #2 | 0 | - | 4.45 | 22,824 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,112 |
| U.S. Cities by Hispanic Population | 0 | - | 4.26 | 24,426 |
| Largest World Cities With Four Letters | 0 | - | 4.43 | 43,020 |
| Northernmost Major City by Country | 0 | - | 4.55 | 30,640 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 20,500 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 22,639 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 191,780 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,300,050 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,125 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 135,971 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 108,664 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.79 | 64,584 |
| Largest Cities in Alexander's Empire | 0 | - | 4.56 | 38,473 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 79,981 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,301 |
| Largest Nordic Cities on a Map | 0 | - | 4.72 | 22,724 |
| Biggest Urban Areas in the UK | 0 | - | 4.40 | 166,974 |
| Canadian Metro Areas over 100,000 People | 0 | - | 4.45 | 28,333 |
| Biggest Cities in Portugal | 0 | - | 4.41 | 18,645 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,734 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 146,382 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 96,029 |
| Biggest Cities Starting With K | 0 | - | 4.29 | 78,102 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 113,648 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 115,235 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 123,839 |
| Countries with Megacities | 0 | - | 4.99 | 194,267 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,024 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,646 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,391 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,505 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 244,541 |
| Biggest Cities in Colombia Quiz | 0 | - | 4.41 | 12,863 |
| Biggest Cities in Mexico | 0 | - | 4.54 | 28,666 |
| Saint Lucia Country Quiz | 0 | - | 4.65 | 16,115 |
| Biggest U.S. Cities A-Z | 0 | - | 4.59 | 121,595 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 116,152 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,191 |
| Countries of Europe by Population | 0 | - | 4.98 | 124,183 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,091 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,072 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,398 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,280 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,140 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 95,405 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 74,290 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 92,433 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 64,301 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,052 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 27,187 |
| Biggest Cities by Trait #2 | 0 | - | 4.37 | 14,056 |
| Flags to Largest Cities | 0 | - | 4.57 | 30,684 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,161 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.36 | 82,742 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.36 | 69,247 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.28 | 77,548 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.10 | 83,216 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 65,698 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.23 | 61,445 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.22 | 59,724 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 67,124 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 203,732 |
