| Biggest Cities in the World | 0 | - | 4.91 | 739,335 |
| Biggest City by Time Zone | 0 | - | 4.85 | 60,300 |
| Biggest City in Every Country | 0 | - | 4.98 | 88,244 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 185,491 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 100,340 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 108,345 |
| Biggest Cities with Exceptions | 0 | - | 4.89 | 71,851 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.85 | 77,813 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 393,772 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 71,550 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 44,911 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 64,345 |
| Ten Southernmost Megacities | 0 | - | 4.82 | 48,592 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 60,906 |
| Biggest Cities in the United States | 0 | - | 4.94 | 898,943 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 349,246 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.88 | 113,983 |
| Biggest Cities by Language | 0 | - | 4.95 | 222,454 |
| Largest City by Island | 0 | - | 4.90 | 64,935 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.94 | 67,179 |
| Most Populous World Capitals | 0 | - | 4.93 | 168,187 |
| Biggest European Cities by Century | 0 | - | 4.98 | 124,452 |
| Megacities on a World Map | 0 | - | 4.98 | 231,009 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 544,243 |
| 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 | 68,584 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 98,283 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 159,007 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 322,298 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 160,599 |
| Biggest Cities in Asia | 0 | - | 4.94 | 102,799 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 46,684 |
| Megacities on an Empty Map | 0 | - | 4.95 | 92,341 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.94 | 46,235 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 117,925 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 111,502 |
| Biggest Cities Starting With H | 0 | - | 4.55 | 103,041 |
| Biggest Cities Starting With L | 0 | - | 4.45 | 116,284 |
| Biggest Cities Starting With M | 0 | - | 4.49 | 135,519 |
| Biggest Cities Starting With P | 0 | - | 4.48 | 120,517 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.81 | 66,179 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 70,479 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 211,027 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 127,603 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 106,076 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 100,009 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 44,089 |
| Biggest City by Region | 0 | - | 4.49 | 34,818 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 55,390 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 151,267 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.97 | 40,861 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 110,063 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,994 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 51,353 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 80,488 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 74,422 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.92 | 34,081 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.89 | 106,927 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 57,131 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 48,252 |
| Biggest Cities Starting With B | 0 | - | 4.36 | 155,460 |
| Biggest Cities Starting With C | 0 | - | 4.09 | 100,818 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 82,941 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 120,608 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 121,985 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 145,209 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 116,256 |
| Biggest Cities in Europe | 0 | - | 4.74 | 512,314 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 53,390 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 97,217 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 49,592 |
| Largest Nordic Cities on a Map | 0 | - | 4.83 | 33,354 |
| Biggest Cities in Germany | 0 | - | 4.95 | 277,506 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 139,876 |
| Biggest Cities in History | 0 | - | 4.50 | 84,719 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 69,981 |
| 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 | 71,697 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,886 |
| 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 | 39,122 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.90 | 86,578 |
| All Cities in India with Population of 1 Million | 0 | - | 4.82 | 44,060 |
| Cities of China (With Some Help) | 0 | - | 4.89 | 29,758 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 156,255 |
| Countries with Megacities | 0 | - | 4.99 | 215,324 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 184,878 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 105,267 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 122,694 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 72,063 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 267,090 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 71,165 |
| Biggest Mediterranean Cities | 0 | - | 4.56 | 88,654 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.57 | 39,150 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,371,752 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 362,440 |
| Biggest English Cities by Century | 0 | - | 4.89 | 102,814 |
| Biggest Cities in the World - 2100 | 0 | - | 4.25 | 87,328 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,312 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 103,687 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.47 | 62,622 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 159,285 |
| Flags to Largest Cities | 0 | - | 4.54 | 35,270 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.42 | 103,254 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.41 | 87,745 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 212,626 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 121,721 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 81,012 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 255,803 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 114,956 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 107,118 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 87,186 |
| Biggest European Cities by Letter | 0 | - | 4.62 | 122,634 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.64 | 64,276 |
| Largest World Cities With Four Letters | 0 | - | 4.35 | 44,344 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,011 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 79,333 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 42,184 |
| Biggest "Saint" Cities - United States | 0 | - | 4.48 | 35,417 |
| Biggest Cities by Trait #2 | 0 | - | 4.40 | 14,752 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.42 | 38,870 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 35,366 |
| Countries of Europe by Population | 0 | - | 4.98 | 143,328 |
| Most Populous Countries by Year | 0 | - | 4.81 | 101,321 |
| Most Populous Country by First Two Letters | 0 | - | 4.71 | 69,111 |
| Demographics Multiple Choice | 0 | - | 4.68 | 41,044 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 81,293 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 102,703 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 99,737 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 106,608 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 84,014 |
| Jewish Cities Quiz | 0 | - | 4.32 | 60,467 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 81,046 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 63,502 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.43 | 49,056 |
| Biggest Cities Near a Border | 0 | - | 4.19 | 30,484 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 39,712 |
| Cities in Squares on a Map - North America | 0 | - | 4.31 | 20,396 |
| Biggest Urban Areas in the UK | 0 | - | 4.41 | 171,838 |
| Biggest Cities in Japan | 0 | - | 4.68 | 79,442 |
| Biggest Cities in Russia | 0 | - | 4.48 | 79,555 |
| Biggest Cities in France | 0 | - | 4.70 | 210,768 |
| Biggest Cities in Spain | 0 | - | 4.55 | 162,039 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 53,212 |
| Biggest Cities in Poland | 0 | - | 4.57 | 50,892 |
| Biggest Cities in the UK | 0 | - | 4.47 | 99,003 |
| Biggest Cities in China | 0 | - | 4.47 | 148,071 |
| Cities of Ireland | 0 | - | 4.50 | 48,283 |
| Biggest Cities in Canada | 0 | - | 4.56 | 126,276 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 45,333 |
| Biggest Cities in India | 0 | - | 4.70 | 65,029 |
| Biggest Cities in Italy | 0 | - | 4.70 | 229,235 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.34 | 95,690 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.14 | 101,324 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 75,354 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.17 | 70,700 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.25 | 69,996 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.31 | 71,320 |
| Biggest U.S. Cities A-Z | 0 | - | 4.68 | 134,946 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 213,322 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 129,236 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 71,872 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 79,778 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 56,153 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 69,814 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 91,509 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 158,654 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 162,466 |
| 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 | 43,073 |
| Biggest Cities in Brazil | 0 | - | 4.56 | 50,707 |
| Biggest Cities in Mexico | 0 | - | 4.50 | 36,729 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.74 | 72,271 |
| All Cities in China with Population of 1 Million | 0 | - | 4.77 | 42,035 |
| Most Populous Islands | 0 | - | 4.77 | 117,498 |
| Islands by Largest City #1 | 0 | - | 4.46 | 92,974 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 218,124 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 171,314 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 168,421 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 97,782 |
| Countries by Population Decrease | 0 | - | 4.46 | 48,239 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 103,949 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 152,586 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.56 | 61,477 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 68,372 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.91 | 19,118 |
| Biggest Nordic Cities | 0 | - | 4.38 | 60,531 |
| U.S. Cities by Hispanic Population | 0 | - | 4.30 | 35,524 |
| Biggest Axis-Controlled Cities | 0 | - | 4.42 | 46,864 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.37 | 31,046 |
| 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 | 34,274 |
| Biggest Cities in North Carolina | 0 | - | 4.68 | 33,594 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 167,579 |
| Boundary Waters | 0 | - | 4.93 | 84,673 |
