| Most Populous World Capitals | 0 | - | 4.93 | 167,907 |
| Biggest Cities in the World | 0 | - | 4.91 | 737,142 |
| Biggest City by Time Zone | 0 | - | 4.85 | 60,057 |
| Biggest City in Every Country | 0 | - | 4.98 | 87,645 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 184,826 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 99,982 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 107,867 |
| Biggest Cities with Exceptions | 0 | - | 4.89 | 71,582 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.85 | 77,577 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 392,954 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 71,264 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 44,796 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.90 | 64,141 |
| Ten Southernmost Megacities | 0 | - | 4.82 | 48,492 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 60,666 |
| Biggest Cities in the United States | 0 | - | 4.94 | 896,007 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 348,580 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.88 | 113,811 |
| Biggest Cities by Language | 0 | - | 4.95 | 222,159 |
| Largest City by Island | 0 | - | 4.90 | 64,477 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.94 | 67,039 |
| Biggest European Cities by Century | 0 | - | 4.98 | 123,923 |
| Megacities on a World Map | 0 | - | 4.98 | 230,587 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 542,959 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 63,367 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 68,350 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 97,917 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 158,746 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 321,589 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 160,373 |
| Biggest Cities in Asia | 0 | - | 4.94 | 102,547 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 46,547 |
| Megacities on an Empty Map | 0 | - | 4.95 | 92,138 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.94 | 46,063 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.81 | 66,074 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 70,383 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 210,633 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 127,353 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 105,741 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 99,961 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 44,052 |
| Biggest City by Region | 0 | - | 4.49 | 34,776 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 55,321 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 150,937 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.83 | 45,976 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.97 | 40,683 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 109,791 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,952 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 51,324 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 80,359 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 74,228 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.92 | 33,844 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.89 | 106,590 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 56,961 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 48,211 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 144,896 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 115,943 |
| Biggest Cities in Europe | 0 | - | 4.74 | 510,935 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 53,259 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 97,062 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 49,352 |
| Largest Nordic Cities on a Map | 0 | - | 4.83 | 33,195 |
| Biggest Cities in Germany | 0 | - | 4.95 | 276,924 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 139,768 |
| Biggest Cities in History | 0 | - | 4.49 | 84,575 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 69,887 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.55 | 41,663 |
| Biggest World Cities in 1850 | 0 | - | 4.62 | 66,424 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 117,701 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 111,320 |
| Biggest Cities Starting With H | 0 | - | 4.55 | 102,778 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 116,053 |
| Biggest Cities Starting With M | 0 | - | 4.49 | 135,274 |
| Biggest Cities Starting With P | 0 | - | 4.48 | 120,291 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 71,650 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,839 |
| Biggest Coastal City by Country | 0 | - | 4.60 | 27,456 |
| Biggest City by Region #2 | 0 | - | 4.43 | 23,879 |
| Biggest Cities by Latitude | 0 | - | 4.75 | 26,870 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 41,843 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 39,040 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.90 | 86,150 |
| All Cities in India with Population of 1 Million | 0 | - | 4.82 | 43,915 |
| Cities of China (With Some Help) | 0 | - | 4.89 | 29,692 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 155,226 |
| Countries with Megacities | 0 | - | 4.99 | 213,906 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 184,122 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 104,831 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 105,326 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 71,541 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 266,022 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 71,067 |
| Biggest Mediterranean Cities | 0 | - | 4.56 | 88,584 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.57 | 39,046 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,369,030 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 361,907 |
| Biggest English Cities by Century | 0 | - | 4.89 | 102,665 |
| Biggest Cities in the World - 2100 | 0 | - | 4.25 | 87,094 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,281 |
| Biggest Cities Starting With B | 0 | - | 4.36 | 155,184 |
| Biggest Cities Starting With C | 0 | - | 4.09 | 100,664 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 82,558 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 120,408 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 121,784 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 103,567 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.47 | 62,541 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 159,040 |
| Flags to Largest Cities | 0 | - | 4.54 | 35,111 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.42 | 102,993 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.41 | 87,505 |
| Biggest World Cities A-Z | 0 | - | 4.56 | 212,243 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 121,517 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 80,811 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 255,282 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 114,665 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 106,953 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 86,927 |
| Biggest European Cities by Letter | 0 | - | 4.62 | 122,510 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.64 | 64,222 |
| Largest World Cities With Four Letters | 0 | - | 4.35 | 44,309 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 79,092 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 42,086 |
| Biggest "Saint" Cities - United States | 0 | - | 4.48 | 35,370 |
| Biggest Cities by Trait #2 | 0 | - | 4.40 | 14,730 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.42 | 38,813 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 35,269 |
| Countries of Europe by Population | 0 | - | 4.98 | 142,589 |
| Most Populous Countries by Year | 0 | - | 4.81 | 100,991 |
| Most Populous Country by First Two Letters | 0 | - | 4.71 | 69,024 |
| Demographics Multiple Choice | 0 | - | 4.68 | 40,996 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 81,170 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 102,375 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 99,437 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 106,281 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 83,783 |
| Jewish Cities Quiz | 0 | - | 4.32 | 60,432 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 80,914 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 63,408 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.43 | 48,974 |
| Biggest Cities Near a Border | 0 | - | 4.19 | 30,420 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 39,580 |
| Cities in Squares on a Map - North America | 0 | - | 4.31 | 20,355 |
| Biggest Urban Areas in the UK | 0 | - | 4.41 | 171,689 |
| Biggest Cities in Japan | 0 | - | 4.68 | 79,308 |
| Biggest Cities in Russia | 0 | - | 4.48 | 79,474 |
| Biggest Cities in France | 0 | - | 4.70 | 210,301 |
| Biggest Cities in Spain | 0 | - | 4.55 | 161,684 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 53,104 |
| Biggest Cities in Poland | 0 | - | 4.57 | 50,779 |
| Biggest Cities in the UK | 0 | - | 4.47 | 98,769 |
| Biggest Cities in China | 0 | - | 4.47 | 147,724 |
| Cities of Ireland | 0 | - | 4.50 | 48,175 |
| Biggest Cities in Canada | 0 | - | 4.57 | 126,104 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 45,259 |
| Biggest Cities in India | 0 | - | 4.70 | 64,947 |
| Biggest Cities in Italy | 0 | - | 4.70 | 228,775 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.34 | 95,449 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.14 | 101,081 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 75,138 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.17 | 70,501 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.26 | 68,940 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.31 | 71,170 |
| Biggest U.S. Cities A-Z | 0 | - | 4.68 | 134,811 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 212,972 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 128,988 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 71,744 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 79,630 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 56,047 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 69,691 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 91,323 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 158,407 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 162,189 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 58,120 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.68 | 76,737 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.74 | 43,051 |
| Biggest Cities in Brazil | 0 | - | 4.56 | 50,611 |
| Biggest Cities in Mexico | 0 | - | 4.50 | 36,631 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.74 | 72,046 |
| Most Populous Islands | 0 | - | 4.75 | 117,316 |
| Islands by Largest City #1 | 0 | - | 4.46 | 92,952 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 217,687 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 170,942 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 168,055 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 97,578 |
| Countries by Population Decrease | 0 | - | 4.46 | 48,163 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 103,815 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 152,226 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.56 | 61,341 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 68,189 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.91 | 18,926 |
| Biggest Nordic Cities | 0 | - | 4.38 | 60,497 |
| U.S. Cities by Hispanic Population | 0 | - | 4.30 | 35,377 |
| Biggest Axis-Controlled Cities | 0 | - | 4.42 | 46,785 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.37 | 31,010 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.50 | 22,140 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 23,438 |
| Biggest Cities in Washington State | 0 | - | 4.45 | 34,216 |
| Biggest Cities in North Carolina | 0 | - | 4.68 | 33,545 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 167,390 |
| Boundary Waters | 0 | - | 4.93 | 84,470 |
