| Biggest Cities in the World | 0 | - | 4.91 | 739,382 |
| Biggest City by Time Zone | 0 | - | 4.85 | 60,305 |
| Biggest City in Every Country | 0 | - | 4.98 | 88,250 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 185,506 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 100,346 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 108,354 |
| Biggest Cities with Exceptions | 0 | - | 4.89 | 71,858 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.85 | 77,815 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 393,800 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 71,557 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 44,918 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 64,350 |
| Ten Southernmost Megacities | 0 | - | 4.82 | 48,592 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 60,913 |
| Biggest Cities in the United States | 0 | - | 4.94 | 898,987 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 349,253 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.88 | 113,983 |
| Biggest Cities by Language | 0 | - | 4.95 | 222,459 |
| Largest City by Island | 0 | - | 4.90 | 64,945 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.94 | 67,180 |
| Most Populous World Capitals | 0 | - | 4.93 | 168,193 |
| Biggest European Cities by Century | 0 | - | 4.98 | 124,454 |
| Megacities on a World Map | 0 | - | 4.98 | 231,015 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 544,274 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 63,498 |
| All 3M Cities on the World Map | 0 | - | 4.94 | 68,593 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 98,285 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 159,013 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 322,316 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 160,600 |
| Biggest Cities in Asia | 0 | - | 4.94 | 102,805 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 46,689 |
| Megacities on an Empty Map | 0 | - | 4.95 | 92,348 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.94 | 46,239 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 111,504 |
| Biggest Cities Starting With H | 0 | - | 4.55 | 103,045 |
| Biggest Cities Starting With L | 0 | - | 4.45 | 116,288 |
| Biggest Cities Starting With M | 0 | - | 4.49 | 135,523 |
| Biggest Cities Starting With P | 0 | - | 4.48 | 120,519 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.81 | 66,183 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 70,485 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 211,034 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 127,606 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 106,093 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 100,010 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 44,090 |
| Biggest City by Region | 0 | - | 4.49 | 34,818 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 55,392 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 151,275 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.97 | 40,867 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 110,066 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,995 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 51,355 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 80,490 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 74,429 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.92 | 34,088 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.89 | 106,932 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 57,135 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 48,253 |
| Biggest Cities Starting With B | 0 | - | 4.36 | 155,462 |
| Biggest Cities Starting With C | 0 | - | 4.09 | 100,821 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 82,942 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 120,614 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 121,988 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 145,215 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 116,257 |
| Biggest Cities in Europe | 0 | - | 4.74 | 512,350 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 53,393 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 97,218 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 49,598 |
| Largest Nordic Cities on a Map | 0 | - | 4.83 | 33,359 |
| Biggest Cities in Germany | 0 | - | 4.95 | 277,521 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 139,878 |
| Biggest Cities in History | 0 | - | 4.50 | 84,719 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 69,982 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.55 | 41,731 |
| Biggest World Cities in 1850 | 0 | - | 4.62 | 66,503 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 71,700 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,889 |
| Biggest Coastal City by Country | 0 | - | 4.60 | 27,475 |
| Biggest City by Region #2 | 0 | - | 4.43 | 23,902 |
| Biggest Cities by Latitude | 0 | - | 4.77 | 26,905 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 39,124 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.90 | 86,588 |
| All Cities in India with Population of 1 Million | 0 | - | 4.82 | 44,060 |
| Cities of China (With Some Help) | 0 | - | 4.89 | 29,760 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 156,265 |
| Countries with Megacities | 0 | - | 4.99 | 215,330 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 184,884 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 105,268 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 122,781 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 72,069 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 267,118 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 71,168 |
| Biggest Mediterranean Cities | 0 | - | 4.56 | 88,654 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.57 | 39,153 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,371,816 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 362,451 |
| Biggest English Cities by Century | 0 | - | 4.89 | 102,819 |
| Biggest Cities in the World - 2100 | 0 | - | 4.25 | 87,335 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,313 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 103,690 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.47 | 62,625 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 159,290 |
| Flags to Largest Cities | 0 | - | 4.54 | 35,271 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.42 | 103,259 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.41 | 87,751 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 212,634 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 121,722 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 81,013 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 255,807 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 114,964 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 107,122 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 87,190 |
| Countries by Population Range - Tile Select | 0 | - | 4.85 | 54,326 |
| Biggest European Cities by Letter | 0 | - | 4.62 | 122,636 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.64 | 64,276 |
| Largest World Cities With Four Letters | 0 | - | 4.35 | 44,345 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,011 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 79,335 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 42,185 |
| Biggest "Saint" Cities - United States | 0 | - | 4.48 | 35,420 |
| Biggest Cities by Trait #2 | 0 | - | 4.40 | 14,753 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.42 | 38,870 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 35,368 |
| Countries of Europe by Population | 0 | - | 4.98 | 143,347 |
| Most Populous Countries by Year | 0 | - | 4.81 | 101,328 |
| Most Populous Country by First Two Letters | 0 | - | 4.71 | 69,112 |
| Demographics Multiple Choice | 0 | - | 4.68 | 41,044 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 81,297 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 102,709 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 99,743 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 106,612 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 84,021 |
| Jewish Cities Quiz | 0 | - | 4.32 | 60,468 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 81,047 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 63,508 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.43 | 49,057 |
| Biggest Cities Near a Border | 0 | - | 4.19 | 30,485 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 39,718 |
| Cities in Squares on a Map - North America | 0 | - | 4.31 | 20,396 |
| Biggest Urban Areas in the UK | 0 | - | 4.41 | 171,842 |
| Biggest Cities in Japan | 0 | - | 4.68 | 79,477 |
| Biggest Cities in Russia | 0 | - | 4.48 | 79,558 |
| Biggest Cities in France | 0 | - | 4.70 | 210,782 |
| Biggest Cities in Spain | 0 | - | 4.55 | 162,094 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 53,216 |
| Biggest Cities in Poland | 0 | - | 4.57 | 50,897 |
| Biggest Cities in the UK | 0 | - | 4.47 | 99,007 |
| Biggest Cities in China | 0 | - | 4.47 | 148,077 |
| Cities of Ireland | 0 | - | 4.50 | 48,284 |
| Biggest Cities in Canada | 0 | - | 4.56 | 126,282 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 45,336 |
| Biggest Cities in India | 0 | - | 4.70 | 65,032 |
| Biggest Cities in Italy | 0 | - | 4.70 | 229,248 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.34 | 95,692 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.14 | 101,326 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 75,355 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.17 | 70,702 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.25 | 69,997 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.31 | 71,321 |
| Biggest U.S. Cities A-Z | 0 | - | 4.68 | 134,948 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 213,325 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 129,243 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 71,875 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 79,779 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 56,154 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 69,817 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 91,512 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 158,660 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 162,470 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 58,225 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.68 | 76,836 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.74 | 43,074 |
| Biggest Cities in Brazil | 0 | - | 4.56 | 50,709 |
| Biggest Cities in Mexico | 0 | - | 4.50 | 36,730 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.74 | 72,280 |
| All Cities in China with Population of 1 Million | 0 | - | 4.77 | 42,038 |
| Most Populous Islands | 0 | - | 4.77 | 117,501 |
| Islands by Largest City #1 | 0 | - | 4.46 | 92,974 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 218,131 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 171,318 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 168,429 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 97,784 |
| Countries by Population Decrease | 0 | - | 4.46 | 48,240 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 103,953 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 152,590 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.56 | 61,477 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 68,374 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.91 | 19,118 |
| Biggest Nordic Cities | 0 | - | 4.38 | 60,533 |
| U.S. Cities by Hispanic Population | 0 | - | 4.30 | 35,524 |
| Biggest Axis-Controlled Cities | 0 | - | 4.42 | 46,867 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.37 | 31,047 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.50 | 22,188 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 23,457 |
| Biggest Cities in Washington State | 0 | - | 4.45 | 34,276 |
| Biggest Cities in North Carolina | 0 | - | 4.68 | 33,595 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 167,582 |
| Boundary Waters | 0 | - | 4.93 | 84,676 |
