| Biggest Cities in the World | 0 | - | 4.91 | 740,096 |
| Biggest City by Time Zone | 0 | - | 4.86 | 60,369 |
| Biggest City in Every Country | 0 | - | 4.98 | 88,365 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 185,716 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 100,477 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 108,511 |
| Biggest Cities with Exceptions | 0 | - | 4.89 | 71,950 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.85 | 77,891 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 394,087 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 71,640 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 44,942 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 64,420 |
| Ten Southernmost Megacities | 0 | - | 4.82 | 48,617 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 60,979 |
| Biggest Cities in the United States | 0 | - | 4.94 | 899,985 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 349,456 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 544,751 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.88 | 114,063 |
| Biggest Cities by Language | 0 | - | 4.95 | 222,568 |
| Largest City by Island | 0 | - | 4.90 | 65,087 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.94 | 67,211 |
| Most Populous World Capitals | 0 | - | 4.93 | 168,270 |
| Biggest European Cities by Century | 0 | - | 4.98 | 124,527 |
| Megacities on a World Map | 0 | - | 4.98 | 231,152 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 63,543 |
| All 3M Cities on the World Map | 0 | - | 4.94 | 68,665 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 98,392 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 159,119 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 322,562 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 160,674 |
| Biggest Cities in Asia | 0 | - | 4.94 | 102,881 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 46,740 |
| Megacities on an Empty Map | 0 | - | 4.95 | 92,410 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.94 | 46,296 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.81 | 66,224 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 70,527 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 211,162 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 127,676 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 106,208 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 151,392 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.97 | 40,929 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 110,135 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 74,505 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.92 | 34,196 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.89 | 107,072 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 57,201 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 100,014 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 44,105 |
| Biggest City by Region | 0 | - | 4.49 | 34,830 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 55,413 |
| Northernmost Major City by Country | 0 | - | 4.56 | 32,008 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 51,367 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 80,531 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 48,272 |
| Biggest Cities in Europe | 0 | - | 4.74 | 512,777 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 53,426 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 97,276 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 49,689 |
| Largest Nordic Cities on a Map | 0 | - | 4.83 | 33,413 |
| Biggest Cities in Germany | 0 | - | 4.95 | 277,738 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 212,757 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 145,466 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 116,356 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 139,924 |
| Biggest Cities in History | 0 | - | 4.50 | 84,768 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 70,017 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.55 | 41,748 |
| Biggest World Cities in 1850 | 0 | - | 4.62 | 66,525 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 39,141 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.90 | 86,724 |
| All Cities in India with Population of 1 Million | 0 | - | 4.82 | 44,093 |
| Biggest Cities Starting With A | 0 | - | 4.61 | 117,995 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 111,559 |
| Biggest Cities Starting With H | 0 | - | 4.55 | 103,123 |
| Biggest Cities Starting With L | 0 | - | 4.45 | 116,353 |
| Biggest Cities Starting With M | 0 | - | 4.49 | 135,617 |
| Biggest Cities Starting With P | 0 | - | 4.48 | 120,597 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 71,718 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,898 |
| Biggest Coastal City by Country | 0 | - | 4.60 | 27,482 |
| Biggest City by Region #2 | 0 | - | 4.43 | 23,911 |
| Biggest Cities by Latitude | 0 | - | 4.77 | 26,915 |
| Cities of China (With Some Help) | 0 | - | 4.89 | 29,788 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 71,187 |
| Biggest Mediterranean Cities | 0 | - | 4.56 | 88,676 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.57 | 39,193 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,372,688 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 362,639 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 156,547 |
| Countries with Megacities | 0 | - | 4.99 | 215,609 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 185,091 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 105,374 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 124,295 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 72,213 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 267,421 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 103,724 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.47 | 62,663 |
| Biggest English Cities by Century | 0 | - | 4.89 | 102,855 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 159,387 |
| Biggest Cities in the World - 2100 | 0 | - | 4.25 | 87,427 |
| Flags to Largest Cities | 0 | - | 4.54 | 35,333 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.42 | 103,320 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.41 | 87,801 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,317 |
| Biggest Cities Starting With B | 0 | - | 4.36 | 155,556 |
| Biggest Cities Starting With C | 0 | - | 4.09 | 100,866 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 82,985 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 120,679 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 122,059 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 121,774 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 81,075 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 255,950 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 115,062 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 107,175 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 87,292 |
| Biggest European Cities by Letter | 0 | - | 4.62 | 122,676 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.64 | 64,292 |
| Largest World Cities With Four Letters | 0 | - | 4.35 | 44,352 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,019 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 79,433 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 42,209 |
| Biggest "Saint" Cities - United States | 0 | - | 4.48 | 35,436 |
| Biggest Cities by Trait #2 | 0 | - | 4.40 | 14,759 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.42 | 38,896 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 35,395 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 81,094 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 63,550 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.43 | 49,091 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 61,948 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 39,763 |
| Biggest Urban Areas in the UK | 0 | - | 4.41 | 171,898 |
| Biggest Cities in Japan | 0 | - | 4.68 | 79,632 |
| Biggest Cities in Russia | 0 | - | 4.48 | 79,585 |
| Biggest Cities in France | 0 | - | 4.70 | 210,992 |
| Biggest Cities in Spain | 0 | - | 4.56 | 162,293 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 53,249 |
| Biggest Cities in Poland | 0 | - | 4.57 | 50,928 |
| Biggest Cities in the UK | 0 | - | 4.47 | 99,111 |
| Biggest Cities in China | 0 | - | 4.47 | 148,189 |
| Cities of Ireland | 0 | - | 4.50 | 48,317 |
| Biggest Cities in Canada | 0 | - | 4.56 | 126,361 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 45,361 |
| Biggest Cities in India | 0 | - | 4.70 | 65,052 |
| Biggest Cities in Italy | 0 | - | 4.70 | 229,408 |
| Biggest U.S. Cities A-Z | 0 | - | 4.68 | 134,983 |
| Countries of Europe by Population | 0 | - | 4.98 | 143,602 |
| Most Populous Countries by Year | 0 | - | 4.81 | 101,573 |
| Most Populous Country by First Two Letters | 0 | - | 4.71 | 69,144 |
| Demographics Multiple Choice | 0 | - | 4.68 | 41,065 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 81,358 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 102,782 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 99,832 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 106,711 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 84,097 |
| Jewish Cities Quiz | 0 | - | 4.32 | 60,483 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 58,250 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.68 | 76,867 |
| Biggest Cities Near a Border | 0 | - | 4.19 | 30,511 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.74 | 43,082 |
| Cities in Squares on a Map - North America | 0 | - | 4.31 | 20,408 |
| Biggest Cities in Brazil | 0 | - | 4.56 | 50,735 |
| Biggest Cities in Mexico | 0 | - | 4.50 | 36,763 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.74 | 72,373 |
| All Cities in China with Population of 1 Million | 0 | - | 4.77 | 42,089 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.34 | 95,757 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.14 | 101,391 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 75,395 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.17 | 70,746 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.25 | 70,055 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.31 | 71,355 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 213,469 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 129,387 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 72,118 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 80,034 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 62,225 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 70,011 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 91,846 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 158,747 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 162,581 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 218,301 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 171,443 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 168,574 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 97,847 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 103,998 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 152,672 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 68,435 |
| Biggest Nordic Cities | 0 | - | 4.38 | 60,545 |
| U.S. Cities by Hispanic Population | 0 | - | 4.30 | 35,564 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.37 | 31,061 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.50 | 22,206 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 23,464 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 167,752 |
| Most Populous Islands | 0 | - | 4.77 | 117,557 |
| Islands by Largest City #1 | 0 | - | 4.46 | 92,978 |
| Countries by Population Decrease | 0 | - | 4.46 | 48,267 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.56 | 61,514 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.91 | 19,169 |
| Biggest Axis-Controlled Cities | 0 | - | 4.42 | 46,892 |
| Largest Cities in Alexander's Empire | 0 | - | 4.57 | 39,251 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.38 | 39,288 |
