| Biggest Cities in the World | 0 | - | 4.89 | 681,158 |
| Biggest City by Time Zone | 0 | - | 4.84 | 53,764 |
| Biggest City in Every Country | 0 | - | 4.97 | 78,004 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 168,141 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 91,259 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 95,073 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 64,082 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.86 | 70,630 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 64,581 |
| Biggest Cities in Deserts | 0 | - | 4.93 | 42,113 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 59,255 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,104 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 368,376 |
| Biggest Cities in the United States | 0 | - | 4.92 | 810,676 |
| 100 Biggest Metro Areas in the USA | 0 | - | 4.98 | 321,529 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 108,370 |
| Biggest Cities by Language | 0 | - | 4.95 | 212,761 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 64,588 |
| Most Populous World Capitals | 0 | - | 4.92 | 147,122 |
| Biggest European Cities by Century | 0 | - | 4.98 | 117,924 |
| Megacities on a World Map | 0 | - | 4.98 | 219,497 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 510,167 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,527 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 62,936 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 83,416 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 150,384 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 154,190 |
| Biggest Cities in Asia | 0 | - | 4.94 | 95,235 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 43,092 |
| Megacities on an Empty Map | 0 | - | 4.96 | 87,024 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 41,295 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 63,474 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,588 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 197,890 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 108,614 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 302,167 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 96,571 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,387 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 42,944 |
| Biggest City by Region | 0 | - | 4.49 | 33,502 |
| Most Populous 2nd Cities | 0 | - | 4.76 | 53,150 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,261 |
| Two Largest Cities by First Two Letters | 0 | - | 4.59 | 75,584 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 46,878 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 136,454 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 109,084 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 131,023 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.83 | 43,740 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.90 | 91,149 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 69,092 |
| 500 Biggest US Cities | 0 | - | 4.87 | 96,811 |
| Biggest Cities in Europe | 0 | - | 4.75 | 460,096 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 135,868 |
| Biggest City by Island | 0 | - | 4.57 | 45,638 |
| Biggest Cities in History | 0 | - | 4.49 | 79,693 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 67,777 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 50,644 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 90,599 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 39,954 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 43,190 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,368 |
| Biggest Cities in Germany | 0 | - | 4.95 | 261,438 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 111,554 |
| Biggest Cities Starting With D | 0 | - | 4.48 | 106,444 |
| Biggest Cities Starting With H | 0 | - | 4.53 | 97,049 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 109,895 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 127,899 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 114,085 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,000 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,882 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 26,988 |
| Biggest City by Region #2 | 0 | - | 4.45 | 23,032 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,169 |
| Northernmost Major City by Country | 0 | - | 4.55 | 30,736 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.90 | 28,575 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,560 |
| Countries with Megacities | 0 | - | 4.99 | 195,333 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,986 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 97,111 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 94,060 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,970 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,834 |
| Biggest Cities in Sweden | 0 | - | 4.83 | 37,084 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 75,092 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,304,801 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 348,014 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,097 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,480 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,371 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.64 | 36,600 |
| Cities of China (With Some Help) | 0 | - | 4.86 | 28,044 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 80,481 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,766 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 147,294 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 96,389 |
| Biggest Cities Starting With K | 0 | - | 4.29 | 78,417 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 114,096 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 115,667 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 116,552 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,572 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,886 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,435 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,599 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,605 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 98,685 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.44 | 60,096 |
| Biggest English Cities by Century | 0 | - | 4.89 | 99,143 |
| Five Biggest Cities by Country | 0 | - | 4.66 | 151,418 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,103 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 192,719 |
| Most Populous Country by First Two Letters | 0 | - | 4.75 | 66,584 |
| Demographics Multiple Choice | 0 | - | 4.66 | 39,619 |
| Biggest European Cities by Letter | 0 | - | 4.65 | 118,242 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.64 | 62,775 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.49 | 55,648 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 40,127 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 33,836 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.80 | 51,944 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 32,658 |
| Countries of Europe by Population | 0 | - | 4.98 | 125,088 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,378 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 95,897 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 74,667 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 92,812 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 64,636 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,140 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.43 | 61,368 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,681 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 28,097 |
| Flags to Largest Cities | 0 | - | 4.54 | 31,505 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 35,654 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,245 |
| Biggest Cities in Japan | 0 | - | 4.66 | 75,007 |
| Biggest Cities in Russia | 0 | - | 4.49 | 76,076 |
| Biggest Cities in France | 0 | - | 4.76 | 198,119 |
| Biggest Cities in Spain | 0 | - | 4.50 | 152,606 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 49,808 |
| Biggest Cities in Poland | 0 | - | 4.56 | 47,787 |
| Biggest Cities in the UK | 0 | - | 4.46 | 92,843 |
| Biggest Cities in China | 0 | - | 4.64 | 137,439 |
| Cities of Ireland | 0 | - | 4.43 | 39,520 |
| Biggest Cities in Canada | 0 | - | 4.67 | 119,807 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,356 |
| Biggest Cities in India | 0 | - | 4.72 | 62,102 |
| Biggest Cities in Italy | 0 | - | 4.66 | 215,884 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.36 | 82,991 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.36 | 69,449 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.28 | 77,778 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.10 | 83,420 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 65,839 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.23 | 61,598 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.22 | 59,844 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 67,262 |
| Biggest U.S. Cities A-Z | 0 | - | 4.64 | 121,798 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 204,337 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 109,050 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 68,310 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 75,791 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,417 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 66,655 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 86,456 |
| Countries with the Highest Population Density | 0 | - | 4.93 | 143,067 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 139,442 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 70,413 |
| Boundary Waters | 0 | - | 4.93 | 80,571 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 74,064 |
| Most Populous Islands | 0 | - | 4.71 | 112,235 |
| Islands by Largest City #1 | 0 | - | 4.48 | 81,974 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 203,882 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 159,775 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 156,344 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 80,120 |
| Countries by Population Decrease | 0 | - | 4.43 | 46,349 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.90 | 84,328 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 145,160 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 49,162 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 63,980 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,563 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,089 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,252 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.37 | 29,898 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 42,397 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 28,625 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 20,579 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,145 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 63,757 |
| All Cities in China with Population of 1 Million | 0 | - | 4.77 | 38,063 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 40,596 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 22,684 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 161,369 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 31,797 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,590,138 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.82 | 29,876 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.75 | 92,622 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.89 | 50,455 |
| Largest Cities in Alexander's Empire | 0 | - | 4.56 | 38,539 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.37 | 36,948 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.24 | 89,832 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 52,442 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,350 |
