| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 142,918 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 70,441 |
| 500 Biggest US Cities | 0 | - | 4.88 | 99,983 |
| Biggest Cities in the World | 0 | - | 4.90 | 696,875 |
| Biggest Cities in Asia | 0 | - | 4.94 | 97,243 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 44,114 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 42,594 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 202,092 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 121,882 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 375,914 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 29,930 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 307,802 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 99,249 |
| Biggest Cities in the United States | 0 | - | 4.93 | 843,575 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 337,241 |
| Biggest City by Time Zone | 0 | - | 4.84 | 55,380 |
| Biggest City in Every Country | 0 | - | 4.98 | 80,398 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 172,622 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 93,410 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 98,547 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 66,139 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.84 | 72,734 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 66,339 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 52,858 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 56,674 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.70 | 74,997 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 42,793 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 60,450 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,767 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 56,162 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 108,468 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 44,482 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 104,203 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 519,756 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.82 | 53,357 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 109,749 |
| Biggest Cities by Language | 0 | - | 4.95 | 215,630 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 65,191 |
| Most Populous World Capitals | 0 | - | 4.93 | 149,795 |
| Biggest European Cities by Century | 0 | - | 4.98 | 119,881 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 51,330 |
| Megacities on a World Map | 0 | - | 4.98 | 222,845 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 93,166 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 60,505 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 64,206 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 44,889 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 85,785 |
| Biggest Cities in Germany | 0 | - | 4.95 | 266,376 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 152,545 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 32,342 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 155,955 |
| Biggest Cities in Europe | 0 | - | 4.75 | 470,943 |
| Megacities on an Empty Map | 0 | - | 4.95 | 88,350 |
| Biggest Cities in Sweden | 0 | - | 4.84 | 37,644 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 78,217 |
| Biggest Cities in Mexico | 0 | - | 4.50 | 34,672 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,510 |
| Biggest English Cities by Century | 0 | - | 4.90 | 100,206 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 64,209 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 68,347 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.50 | 62,516 |
| U.S. States by Second Most Populous City | 0 | - | 4.43 | 40,678 |
| Biggest "Saint" Cities - United States | 0 | - | 4.47 | 34,256 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 37,160 |
| Biggest Cities in Washington State | 0 | - | 4.44 | 30,170 |
| Biggest Cities in California | 0 | - | 4.35 | 131,408 |
| Biggest Cities in Florida | 0 | - | 4.20 | 67,908 |
| Biggest Cities in New York State | 0 | - | 4.29 | 56,272 |
| Biggest Cities in Pennsylvania | 0 | - | 4.14 | 43,031 |
| Biggest Cities in Ohio | 0 | - | 4.37 | 46,109 |
| Biggest Cities in Texas | 0 | - | 4.26 | 112,109 |
| Biggest Cities in Wisconsin | 0 | - | 4.45 | 23,625 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 61,880 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.50 | 41,147 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.78 | 69,317 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 87,097 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 37,350 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,917 |
| Word Scramble - U.S. States | 0 | - | 4.96 | 462,468 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 60,826 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 98,120 |
| Biggest Cities by Trait #1 | 0 | - | 4.45 | 43,254 |
| Biggest City by Region | 0 | - | 4.50 | 33,935 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 53,782 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.97 | 78,599 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,560 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 77,526 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,273 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 136,844 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 119,917 |
| Biggest City by Island | 0 | - | 4.57 | 45,990 |
| Biggest Cities in History | 0 | - | 4.50 | 81,415 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 68,340 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 63,192 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.38 | 37,671 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 40,409 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.23 | 93,879 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 36,779 |
| Biggest World Cities in 1850 | 0 | - | 4.63 | 64,929 |
| Biggest Cities in Japan | 0 | - | 4.65 | 76,199 |
| Biggest Cities in Russia | 0 | - | 4.49 | 77,355 |
| Biggest Cities in France | 0 | - | 4.76 | 201,775 |
| Biggest Cities in Spain | 0 | - | 4.55 | 155,369 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 50,857 |
| Biggest Cities in Poland | 0 | - | 4.57 | 48,698 |
| Biggest Cities in the UK | 0 | - | 4.46 | 94,576 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 33,410 |
| Biggest Cities in China | 0 | - | 4.57 | 140,594 |
| Cities of Ireland | 0 | - | 4.43 | 40,115 |
| Biggest Cities in Canada | 0 | - | 4.66 | 121,754 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,923 |
| Biggest Cities in India | 0 | - | 4.71 | 62,972 |
| Biggest Cities in Italy | 0 | - | 4.66 | 219,860 |
| Biggest Cities in New Jersey | 0 | - | 4.10 | 25,234 |
| Biggest Cities in Colorado | 0 | - | 4.04 | 30,197 |
| Biggest Cities in Virginia | 0 | - | 4.21 | 23,198 |
| Biggest Cities in Oregon | 0 | - | 4.11 | 18,963 |
| Biggest Cities in Alaska | 0 | - | 4.27 | 23,844 |
| Biggest Cities in Arizona | 0 | - | 4.28 | 28,890 |
| Biggest Cities in Illinois | 0 | - | 4.33 | 24,844 |
| Biggest Cities in Louisiana | 0 | - | 4.12 | 18,469 |
| Biggest Cities in Massachusetts | 0 | - | 4.38 | 27,985 |
| Biggest Cities in Michigan | 0 | - | 3.97 | 32,536 |
| Biggest Cities in Missouri | 0 | - | 4.21 | 16,008 |
| Biggest Cities in Tennessee | 0 | - | 4.24 | 19,335 |
| Biggest Cities in Indiana | 0 | - | 4.29 | 24,228 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 113,405 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 107,644 |
| Biggest Cities Starting With H | 0 | - | 4.57 | 98,688 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 111,580 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 130,048 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 115,722 |
| U.S. State Flags | 0 | - | 4.88 | 139,057 |
| U.S. States that Border Tennessee | 0 | - | 4.84 | 57,998 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.78 | 42,600 |
| Biggest Cities in Colombia Quiz | 0 | - | 4.41 | 13,266 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.75 | 65,923 |
| All Cities in China with Population of 1 Million | 0 | - | 4.79 | 39,211 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 41,476 |
| US States and State Capitals Quiz | 0 | - | 4.99 | 122,874 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 77,853 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 100,229 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,505 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,129 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,827 |
| Biggest Coastal City by Country | 0 | - | 4.60 | 27,095 |
| Five Biggest Cities by Country | 0 | - | 4.66 | 154,077 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,297 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,369 |
| U.S. Cities by Hispanic Population | 0 | - | 4.27 | 24,672 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,436 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,103 |
| Flags to Largest Cities | 0 | - | 4.54 | 32,638 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.48 | 21,022 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 22,916 |
| Biggest World Cities A-Z | 0 | - | 4.57 | 204,799 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,322,535 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 352,126 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 138,929 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 110,953 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.79 | 65,394 |
| Largest Cities in Alexander's Empire | 0 | - | 4.56 | 38,727 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 82,426 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,585 |
| Largest Nordic Cities on a Map | 0 | - | 4.79 | 23,839 |
| Biggest Urban Areas in the UK | 0 | - | 4.40 | 168,593 |
| Canadian Metro Areas over 100,000 People | 0 | - | 4.46 | 28,769 |
| Biggest Cities in Portugal | 0 | - | 4.42 | 19,020 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,912 |
| Biggest Cities in Georgia | 0 | - | 3.96 | 21,913 |
| Biggest Cities Starting With B | 0 | - | 4.36 | 149,626 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 97,673 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 79,441 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 115,827 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 117,253 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 127,983 |
| Countries with Megacities | 0 | - | 4.99 | 200,317 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,842 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,211 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 97,342 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,206 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 251,199 |
| Saint Lucia Country Quiz | 0 | - | 4.66 | 16,479 |
| Biggest U.S. Cities A-Z | 0 | - | 4.72 | 132,402 |
| Which City in Canada? | 0 | - | 4.89 | 45,721 |
| Countries Closest to United States A-Z | 0 | - | 4.84 | 108,191 |
| Hawaiian Islands | 0 | - | 4.85 | 38,743 |
| U.S. States that Border Canada | 0 | - | 4.90 | 166,535 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 117,695 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 66,981 |
| Countries of Europe by Population | 0 | - | 4.98 | 129,856 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 247,158 |
| Most Populous Countries by Year | 0 | - | 4.81 | 94,997 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,019 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 103,978 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 71,640 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 79,122 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 97,745 |
| Countries with the Most People Bordering Them | 0 | - | 4.97 | 82,851 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 94,470 |
