| Biggest Cities in the World | 0 | - | 4.91 | 759,264 |
| Biggest City by Time Zone | 0 | - | 4.87 | 62,598 |
| Biggest City in Every Country | 0 | - | 4.98 | 91,848 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 191,542 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 103,658 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 112,790 |
| Biggest Cities with Exceptions | 0 | - | 4.88 | 74,324 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.86 | 80,031 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 401,893 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 74,074 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 45,983 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 66,213 |
| Ten Southernmost Megacities | 0 | - | 4.82 | 49,427 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 63,162 |
| Biggest Cities in the United States | 0 | - | 4.94 | 925,106 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 354,898 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.88 | 115,722 |
| Biggest Cities by Language | 0 | - | 4.95 | 225,645 |
| Largest City by Island | 0 | - | 4.89 | 68,164 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.92 | 68,311 |
| Most Populous World Capitals | 0 | - | 4.93 | 170,625 |
| Biggest European Cities by Century | 0 | - | 4.98 | 126,033 |
| Megacities on a World Map | 0 | - | 4.98 | 234,791 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 555,457 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 64,753 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 70,652 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 101,846 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 162,346 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 329,878 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 163,155 |
| Biggest Cities in Asia | 0 | - | 4.94 | 105,181 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 47,869 |
| Megacities on an Empty Map | 0 | - | 4.95 | 94,167 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.94 | 47,785 |
| Biggest Cities Starting With A | 0 | - | 4.61 | 120,201 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 113,062 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 105,255 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 118,305 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 138,351 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 122,624 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 67,108 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 71,519 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 214,929 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 130,456 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 109,145 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 100,449 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 44,463 |
| Biggest City by Region | 0 | - | 4.50 | 35,255 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,018 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 154,206 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 42,575 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 112,411 |
| Northernmost Major City by Country | 0 | - | 4.56 | 32,391 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 51,685 |
| Two Largest Cities by First Two Letters | 0 | - | 4.55 | 81,513 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 76,167 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.92 | 36,964 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.88 | 109,906 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.85 | 58,772 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 48,631 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 158,121 |
| Biggest Cities Starting With C | 0 | - | 4.10 | 102,223 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 84,323 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 122,430 |
| Biggest Cities Starting With T | 0 | - | 4.28 | 124,385 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 160,689 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 119,060 |
| Biggest Cities in Europe | 0 | - | 4.74 | 524,619 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 54,303 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 98,672 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 52,499 |
| Largest Nordic Cities on a Map | 0 | - | 4.83 | 34,817 |
| Biggest Cities in Germany | 0 | - | 4.95 | 282,834 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 141,282 |
| Biggest Cities in History | 0 | - | 4.52 | 86,920 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 71,077 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.55 | 42,312 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 67,161 |
| Fastest Growing U.S. Cities | 0 | - | 4.37 | 72,184 |
| Second Biggest Cities by Country | 0 | - | 4.37 | 44,933 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,664 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,186 |
| Biggest Cities by Latitude | 0 | - | 4.77 | 27,129 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.86 | 87,786 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 39,922 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 91,358 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 45,261 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 30,387 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 163,159 |
| Countries with Megacities | 0 | - | 4.99 | 222,835 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 189,893 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 107,870 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 129,178 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 75,292 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 303,554 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.77 | 71,899 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 89,811 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.57 | 39,964 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,394,977 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 367,662 |
| Biggest English Cities by Century | 0 | - | 4.90 | 104,115 |
| Biggest Cities in the World - 2100 | 0 | - | 4.23 | 89,454 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,532 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 105,224 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.49 | 63,383 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 161,963 |
| Flags to Largest Cities | 0 | - | 4.54 | 36,440 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.43 | 106,413 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.42 | 90,892 |
| Biggest World Cities A-Z | 0 | - | 4.56 | 216,159 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 123,681 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 82,959 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 259,666 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 117,290 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 108,634 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 89,455 |
| Biggest European Cities by Letter | 0 | - | 4.62 | 124,163 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 64,710 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 44,745 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,352 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 81,343 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 42,802 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 35,892 |
| Biggest Cities by Trait #2 | 0 | - | 4.40 | 14,943 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.42 | 39,451 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 36,249 |
| Countries of Europe by Population | 0 | - | 4.98 | 168,005 |
| Most Populous Countries by Year | 0 | - | 4.81 | 104,572 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 69,808 |
| Demographics Multiple Choice | 0 | - | 4.69 | 41,485 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 91,298 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 111,476 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 102,462 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 108,755 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 86,153 |
| Jewish Cities Quiz | 0 | - | 4.33 | 60,909 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 82,285 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 71,595 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 49,987 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 31,015 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 41,343 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 20,792 |
| Biggest Urban Areas in the UK | 0 | - | 4.41 | 173,242 |
| Biggest Cities in Japan | 0 | - | 4.65 | 80,798 |
| Biggest Cities in Russia | 0 | - | 4.48 | 80,518 |
| Biggest Cities in France | 0 | - | 4.70 | 215,498 |
| Biggest Cities in Spain | 0 | - | 4.69 | 165,121 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 54,267 |
| Biggest Cities in Poland | 0 | - | 4.58 | 51,970 |
| Biggest Cities in the UK | 0 | - | 4.47 | 101,017 |
| Biggest Cities in China | 0 | - | 4.47 | 151,614 |
| Cities of Ireland | 0 | - | 4.50 | 49,089 |
| Biggest Cities in Canada | 0 | - | 4.56 | 128,605 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 46,023 |
| Biggest Cities in India | 0 | - | 4.70 | 65,914 |
| Biggest Cities in Italy | 0 | - | 4.74 | 233,041 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.35 | 98,727 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.15 | 104,217 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 83,402 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.17 | 78,489 |
| Biggest U.S. Cities Starting with O | 0 | - | 4.38 | 32,259 |
| Biggest U.S. Cities Starting with P | 0 | - | 4.04 | 66,226 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.26 | 71,914 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.37 | 79,645 |
| Biggest U.S. Cities A-Z | 0 | - | 4.69 | 136,333 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 216,835 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 131,342 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.86 | 73,392 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 81,500 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 65,060 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 71,168 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 93,642 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 160,782 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 165,087 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 58,922 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 77,681 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.75 | 43,314 |
| Biggest Cities in Brazil | 0 | - | 4.56 | 51,449 |
| Biggest Cities in Mexico | 0 | - | 4.50 | 37,583 |
| All Cities in China with Population of 1 Million | 0 | - | 4.78 | 43,399 |
| Most Populous Islands | 0 | - | 4.78 | 119,449 |
| Islands by Largest City #1 | 0 | - | 4.47 | 93,754 |
| Islands by Largest City #2 | 0 | - | 4.74 | 34,832 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 222,735 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 175,238 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 171,919 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 100,005 |
| Countries by Population Decrease | 0 | - | 4.45 | 48,788 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 105,547 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 155,116 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.62 | 62,447 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 69,999 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.92 | 20,608 |
| Biggest Nordic Cities | 0 | - | 4.38 | 60,903 |
| U.S. Cities by Hispanic Population | 0 | - | 4.30 | 36,579 |
| Biggest Axis-Controlled Cities | 0 | - | 4.43 | 47,597 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,382 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.51 | 22,669 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 23,687 |
| Biggest Cities in Washington State | 0 | - | 4.46 | 34,946 |
