| Biggest Cities in the World | 0 | - | 4.89 | 687,328 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 371,423 |
| Biggest Cities in the United States | 0 | - | 4.93 | 821,382 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 334,121 |
| Biggest City by Time Zone | 0 | - | 4.84 | 54,445 |
| Biggest City in Every Country | 0 | - | 4.97 | 78,879 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 169,894 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 92,139 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 96,335 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 64,970 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 199,296 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.86 | 71,512 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 109,329 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 65,296 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 42,389 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 304,241 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 97,553 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 59,742 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,387 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 513,799 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 109,048 |
| Biggest Cities by Language | 0 | - | 4.95 | 213,990 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.94 | 64,877 |
| Most Populous World Capitals | 0 | - | 4.92 | 148,568 |
| Biggest European Cities by Century | 0 | - | 4.98 | 118,860 |
| Megacities on a World Map | 0 | - | 4.98 | 220,775 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.91 | 91,958 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,887 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 63,478 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 84,433 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 151,280 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 154,939 |
| Biggest Cities in Asia | 0 | - | 4.94 | 95,932 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 43,468 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 91,107 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 43,841 |
| Megacities on an Empty Map | 0 | - | 4.95 | 87,592 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 41,752 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.82 | 63,769 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,887 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 132,320 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 43,966 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 69,520 |
| 500 Biggest US Cities | 0 | - | 4.87 | 98,206 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.81 | 52,411 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 99,465 |
| Biggest Cities in Europe | 0 | - | 4.75 | 465,068 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,557 |
| 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 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 50,949 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,367 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 76,678 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,035 |
| Biggest Cities in Germany | 0 | - | 4.95 | 263,196 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 194,004 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 29,092 |
| Biggest Cities in Sweden | 0 | - | 4.82 | 37,254 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 76,288 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 136,228 |
| Biggest City by Island | 0 | - | 4.57 | 45,778 |
| Biggest Cities in History | 0 | - | 4.50 | 80,260 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 67,971 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.49 | 40,135 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 30,025 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,600 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,221 |
| Biggest Cities Starting With A | 0 | - | 4.56 | 112,243 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 106,899 |
| Biggest Cities Starting With H | 0 | - | 4.55 | 97,691 |
| Biggest Cities Starting With L | 0 | - | 4.45 | 110,539 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 128,883 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 114,750 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 137,224 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 109,824 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,208 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,987 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 27,034 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,119 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,249 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,253 |
| Northernmost Major City by Country | 0 | - | 4.56 | 30,878 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,806 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,593 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 36,082 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 36,882 |
| Biggest U.S. Cities A-Z | 0 | - | 4.63 | 122,154 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,268 |
| Biggest English Cities by Century | 0 | - | 4.90 | 99,605 |
| Top 10 Coldest European Countries | 0 | - | 4.95 | 180,806 |
| Top 10 Hottest European Countries | 0 | - | 4.87 | 115,547 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 116,464 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,311,556 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 349,650 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 125,869 |
| Countries with Megacities | 0 | - | 4.99 | 197,169 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,504 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 97,913 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 95,346 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 63,882 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 247,870 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 60,404 |
| Five Biggest Cities by Country | 0 | - | 4.66 | 152,518 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 81,227 |
| Flags to Largest Cities | 0 | - | 4.54 | 31,984 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 20,723 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,819 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 148,079 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 97,015 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 78,803 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 114,702 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 116,294 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 118,996 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 62,943 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.50 | 59,956 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.25 | 91,410 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 40,347 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 33,987 |
| Largest Nordic Cities on a Map | 0 | - | 4.76 | 23,299 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 32,969 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 117,006 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 66,124 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 245,076 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 109,046 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,974 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 69,693 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.97 | 77,996 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 61,569 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,787 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,181 |
| Biggest Cities in Japan | 0 | - | 4.66 | 75,613 |
| Biggest Cities in Russia | 0 | - | 4.49 | 76,427 |
| Biggest Cities in France | 0 | - | 4.76 | 199,718 |
| Biggest Cities in Spain | 0 | - | 4.50 | 153,624 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 50,203 |
| Biggest Cities in Poland | 0 | - | 4.57 | 48,101 |
| Biggest Cities in the UK | 0 | - | 4.46 | 93,509 |
| Biggest Cities in China | 0 | - | 4.64 | 138,734 |
| Cities of Ireland | 0 | - | 4.43 | 39,742 |
| Biggest Cities in Canada | 0 | - | 4.66 | 120,478 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,587 |
| Biggest Cities in India | 0 | - | 4.72 | 62,416 |
| Biggest Cities in Italy | 0 | - | 4.65 | 217,275 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.92 | 46,460 |
| Top 10 Coldest U.S. States | 0 | - | 4.91 | 100,260 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 100,724 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 57,107 |
| Countries of Europe by Population | 0 | - | 4.98 | 126,819 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,702 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 96,628 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 75,353 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 93,497 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 70,073 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 28,469 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,383 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.38 | 86,616 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.39 | 72,863 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.31 | 81,142 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.09 | 86,771 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.18 | 68,652 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.23 | 64,171 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.23 | 60,339 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 67,700 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 205,290 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 109,618 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.86 | 68,620 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 76,145 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,676 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 66,944 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 86,956 |
| Countries with the Most Christians | 0 | - | 4.93 | 107,449 |
| Least Christian Countries with Exceptions | 0 | - | 4.89 | 72,523 |
| Countries with the Highest Population Density | 0 | - | 4.93 | 143,782 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 144,918 |
| Most Populous Country by First Two Letters | 0 | - | 4.75 | 66,942 |
| Demographics Multiple Choice | 0 | - | 4.66 | 39,792 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,673 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.67 | 56,321 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,559 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 42,476 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 28,719 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,412 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 64,577 |
| 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 | 41,013 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 22,769 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 31,973 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 205,331 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 160,943 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 157,409 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.91 | 80,868 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.90 | 84,774 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 145,913 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 64,422 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.97 | 5,927 |
| Largest Cities in Alexander's Empire | 0 | - | 4.56 | 38,623 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.37 | 37,245 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 52,621 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,448 |
