| Biggest Cities in the World | 0 | - | 4.92 | 803,989 |
| Biggest City by Time Zone | 0 | - | 4.88 | 68,755 |
| Biggest City in Every Country | 0 | - | 4.98 | 101,697 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 226,924 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 111,251 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 149,213 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,590 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 85,111 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,946 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,765 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,499 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.92 | 70,565 |
| Ten Southernmost Megacities | 0 | - | 4.88 | 65,090 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 68,228 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 131,939 |
| Biggest Cities in the United States | 0 | - | 4.94 | 984,880 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,574 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 129,403 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,449 |
| Largest City by Island | 0 | - | 4.87 | 72,309 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,335 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,531 |
| Biggest European Cities by Century | 0 | - | 4.99 | 146,018 |
| Megacities on a World Map | 0 | - | 4.98 | 256,363 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 581,106 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,676 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,497 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 115,864 |
| Biggest City in Each U.S. State | 0 | - | 4.87 | 169,465 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 347,980 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,846 |
| Biggest Cities in Asia | 0 | - | 4.95 | 117,938 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,349 |
| Megacities on an Empty Map | 0 | - | 4.97 | 119,034 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,410 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.84 | 69,249 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,912 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,391 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,499 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 116,203 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,977 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,618 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,113 |
| Biggest City by Region | 0 | - | 4.50 | 36,351 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,283 |
| Biggest Cities by Latitude Range | 0 | - | 4.80 | 32,230 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 159,885 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,843 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 119,090 |
| Northernmost Major City by Country | 0 | - | 4.57 | 33,281 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,419 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,490 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 84,119 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,307 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 117,901 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,776 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,529 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,778 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,808 |
| Biggest Cities in Europe | 0 | - | 4.73 | 548,437 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,437 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 127,124 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,263 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,728 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,797 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,735 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,819 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 165,600 |
| Biggest Cities in History | 0 | - | 4.52 | 90,483 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 78,794 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.54 | 43,563 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,641 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 125,006 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 117,067 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,853 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,448 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,921 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,579 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,152 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,127 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,897 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,840 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 97,043 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,462 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,391 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 99,738 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 47,901 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,722 |
| Countries with Megacities | 0 | - | 4.99 | 266,242 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,444 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,861 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,725 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,739 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,974 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,705 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,443 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 67,817 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,915 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,930 |
| Biggest English Cities by Century | 0 | - | 4.91 | 106,630 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 32,060 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,976 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 163,635 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,712 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,424 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 127,215 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,705 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,795 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.64 | 108,066 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,929 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 167,149 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.43 | 110,457 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.42 | 94,434 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 223,868 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,311 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,176 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,714 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,497 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,783 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,056 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,459 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,952 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,551 |
| Largest World Cities With Four Letters | 0 | - | 4.39 | 64,400 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 76,031 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 47,061 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 91,775 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 44,126 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,968 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 32,093 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,495 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 38,134 |
| Countries of Europe by Population | 0 | - | 4.98 | 182,447 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,196 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,978 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,353 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,840 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,121 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,486 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,610 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,743 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,116 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,943 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,802 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.46 | 73,288 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,998 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,695 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.61 | 44,482 |
| Cities in Squares on a Map - North America | 0 | - | 4.31 | 21,554 |
| Largest Nordic Cities on a Map | 0 | - | 4.78 | 37,323 |
| Cities on Interstate 90 on a Map | 0 | - | 4.45 | 32,326 |
| Biggest Urban Areas in the UK | 0 | - | 4.43 | 176,619 |
| Biggest Cities in Japan | 0 | - | 4.68 | 83,407 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,693 |
| Biggest Cities in France | 0 | - | 4.70 | 225,004 |
| Biggest Cities in Spain | 0 | - | 4.64 | 171,906 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 56,204 |
| Biggest Cities in Poland | 0 | - | 4.62 | 54,199 |
| Biggest Cities in the UK | 0 | - | 4.48 | 105,682 |
| Biggest Cities in China | 0 | - | 4.53 | 159,588 |
| Biggest Cities in Canada | 0 | - | 4.54 | 133,347 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 47,407 |
| Biggest Cities in India | 0 | - | 4.64 | 67,988 |
| Biggest Cities in Italy | 0 | - | 4.77 | 242,079 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.36 | 102,437 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.16 | 107,664 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 85,752 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.17 | 80,803 |
| Biggest U.S. Cities Starting with O | 0 | - | 4.39 | 33,862 |
| Biggest U.S. Cities Starting with P | 0 | - | 4.03 | 67,637 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.28 | 73,622 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.37 | 81,844 |
| Biggest U.S. Cities A-Z | 0 | - | 4.69 | 139,506 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,603 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,750 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,430 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,105 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,443 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,776 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,634 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,481 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,731 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 60,406 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 79,463 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.75 | 43,902 |
| Biggest Cities in Brazil | 0 | - | 4.57 | 53,367 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 39,523 |
| Most Populous Islands | 0 | - | 4.80 | 123,218 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,359 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,610 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,054 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 184,778 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 194,436 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,715 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,943 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,752 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 159,852 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,419 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 74,435 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.86 | 23,714 |
