| Biggest Cities in the World | 0 | - | 4.91 | 766,724 |
| Biggest City by Time Zone | 0 | - | 4.86 | 63,521 |
| Biggest City in Every Country | 0 | - | 4.98 | 93,267 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 194,211 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 104,893 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 114,427 |
| Biggest Cities with Exceptions | 0 | - | 4.88 | 75,269 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.86 | 80,885 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 404,714 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 75,107 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 46,337 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 66,888 |
| Ten Southernmost Megacities | 0 | - | 4.82 | 49,734 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 64,015 |
| Biggest Cities in the United States | 0 | - | 4.94 | 935,342 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 357,350 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 559,873 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.88 | 116,339 |
| Biggest Cities by Language | 0 | - | 4.95 | 226,772 |
| Largest City by Island | 0 | - | 4.89 | 68,860 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.92 | 68,717 |
| Most Populous World Capitals | 0 | - | 4.93 | 171,872 |
| Biggest European Cities by Century | 0 | - | 4.98 | 126,573 |
| Megacities on a World Map | 0 | - | 4.98 | 236,325 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 65,264 |
| All 3M Cities on the World Map | 0 | - | 4.94 | 71,386 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 103,156 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 163,416 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 332,442 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 164,107 |
| Biggest Cities in Asia | 0 | - | 4.94 | 106,058 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 48,273 |
| Megacities on an Empty Map | 0 | - | 4.96 | 94,777 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.94 | 48,358 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 67,444 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 71,876 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 216,385 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 131,410 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 110,276 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 155,185 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 43,268 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 113,292 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 76,746 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.94 | 37,819 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.88 | 111,385 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.85 | 59,539 |
| Second Biggest Cities by Country | 0 | - | 4.42 | 56,794 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,046 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 44,574 |
| Biggest City by Region | 0 | - | 4.50 | 35,430 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,265 |
| Northernmost Major City by Country | 0 | - | 4.56 | 32,552 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 51,829 |
| Two Largest Cities by First Two Letters | 0 | - | 4.55 | 81,909 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 48,791 |
| Biggest Cities in Europe | 0 | - | 4.74 | 528,935 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 54,616 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 99,246 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 53,524 |
| Largest Nordic Cities on a Map | 0 | - | 4.82 | 35,358 |
| Biggest Cities in Germany | 0 | - | 4.95 | 284,849 |
| Biggest World Cities A-Z | 0 | - | 4.56 | 217,404 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 161,724 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 120,039 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 141,695 |
| Biggest Cities in History | 0 | - | 4.52 | 87,470 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 71,323 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.55 | 42,532 |
| Biggest World Cities in 1850 | 0 | - | 4.62 | 67,420 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 89,595 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,172 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 92,709 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 45,754 |
| Biggest Cities Starting With A | 0 | - | 4.61 | 121,219 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 113,759 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 106,104 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 119,416 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 139,548 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 123,498 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 72,369 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,759 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,298 |
| Biggest Cities by Latitude | 0 | - | 4.77 | 27,220 |
| Biggest Cities by Trait #2 | 0 | - | 4.41 | 15,018 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 30,619 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.78 | 72,157 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 90,073 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.57 | 40,258 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,403,565 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 369,413 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 165,390 |
| Countries with Megacities | 0 | - | 4.99 | 225,422 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 191,676 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 108,847 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 130,652 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 76,384 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 308,908 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 105,677 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.47 | 63,651 |
| Biggest English Cities by Century | 0 | - | 4.90 | 104,475 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 162,746 |
| Flags to Largest Cities | 0 | - | 4.54 | 36,899 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.43 | 107,106 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.42 | 91,468 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,611 |
| Biggest Cities Starting With B | 0 | - | 4.33 | 159,083 |
| Biggest Cities Starting With C | 0 | - | 4.10 | 102,866 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 84,876 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 123,502 |
| Biggest Cities Starting With T | 0 | - | 4.28 | 125,127 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 124,714 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 83,660 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 260,989 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 118,204 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 109,466 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 90,209 |
| Biggest European Cities by Letter | 0 | - | 4.63 | 124,617 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 64,860 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 44,897 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,492 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 82,072 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,022 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,052 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.43 | 39,642 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 36,590 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 82,742 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 71,894 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 47,517 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 50,359 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.48 | 62,640 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 41,913 |
| Biggest Urban Areas in the UK | 0 | - | 4.42 | 174,079 |
| Biggest Cities in Japan | 0 | - | 4.65 | 81,213 |
| Biggest Cities in Russia | 0 | - | 4.48 | 80,923 |
| Biggest Cities in France | 0 | - | 4.72 | 217,280 |
| Biggest Cities in Spain | 0 | - | 4.63 | 166,258 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 54,627 |
| Biggest Cities in Poland | 0 | - | 4.58 | 52,364 |
| Biggest Cities in the UK | 0 | - | 4.47 | 101,759 |
| Biggest Cities in China | 0 | - | 4.48 | 152,879 |
| Cities of Ireland | 0 | - | 4.50 | 49,366 |
| Biggest Cities in Canada | 0 | - | 4.56 | 129,331 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 46,247 |
| Biggest Cities in India | 0 | - | 4.70 | 66,275 |
| Biggest Cities in Italy | 0 | - | 4.75 | 234,862 |
| Biggest U.S. Cities A-Z | 0 | - | 4.69 | 136,976 |
| Countries of Europe by Population | 0 | - | 4.98 | 170,940 |
| Most Populous Countries by Year | 0 | - | 4.81 | 105,921 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,023 |
| Demographics Multiple Choice | 0 | - | 4.70 | 41,656 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 93,831 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 123,909 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 103,590 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 109,680 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 87,004 |
| Jewish Cities Quiz | 0 | - | 4.33 | 61,090 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 59,162 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 77,985 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 31,201 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.75 | 43,417 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 20,943 |
| Biggest Cities in Brazil | 0 | - | 4.57 | 51,756 |
| Biggest Cities in Mexico | 0 | - | 4.50 | 37,910 |
| All Cities in China with Population of 1 Million | 0 | - | 4.78 | 43,849 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.35 | 99,323 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.15 | 104,777 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 83,843 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.17 | 78,927 |
| Biggest U.S. Cities Starting with O | 0 | - | 4.38 | 32,560 |
| Biggest U.S. Cities Starting with P | 0 | - | 4.04 | 66,500 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.26 | 72,228 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.37 | 80,431 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 217,907 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 132,073 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.86 | 73,855 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 82,019 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 65,399 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 71,562 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 94,267 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 161,569 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 166,021 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 225,791 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 177,934 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 187,942 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 100,951 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 106,165 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 155,950 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 71,016 |
| Biggest Nordic Cities | 0 | - | 4.38 | 61,040 |
| U.S. Cities by Hispanic Population | 0 | - | 4.31 | 36,982 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,511 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.51 | 22,825 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 23,791 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 170,346 |
| Most Populous Islands | 0 | - | 4.78 | 120,067 |
| Islands by Largest City #1 | 0 | - | 4.47 | 93,874 |
| Islands by Largest City #2 | 0 | - | 4.74 | 34,972 |
| Countries by Population Decrease | 0 | - | 4.45 | 48,987 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 62,825 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.87 | 21,274 |
