| Biggest Cities in the World | 0 | - | 4.89 | 684,857 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 369,895 |
| Biggest Cities in the United States | 0 | - | 4.92 | 813,906 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 332,940 |
| Biggest City by Time Zone | 0 | - | 4.84 | 54,168 |
| Biggest City in Every Country | 0 | - | 4.97 | 78,527 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 169,189 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 91,782 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 95,812 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 64,681 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.86 | 71,134 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 65,007 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 42,275 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 59,546 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,282 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.96 | 55,016 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 512,215 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 108,833 |
| Biggest Cities by Language | 0 | - | 4.95 | 213,613 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 64,714 |
| Most Populous World Capitals | 0 | - | 4.92 | 147,824 |
| Biggest European Cities by Century | 0 | - | 4.98 | 118,559 |
| Megacities on a World Map | 0 | - | 4.98 | 220,369 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,750 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 63,224 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 84,043 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 150,885 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 154,573 |
| Biggest Cities in Asia | 0 | - | 4.94 | 95,638 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 43,326 |
| Megacities on an Empty Map | 0 | - | 4.95 | 87,350 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 41,568 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 63,657 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,764 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 198,797 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 109,051 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 303,360 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 97,191 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 131,465 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 43,855 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.90 | 91,640 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 69,322 |
| 500 Biggest US Cities | 0 | - | 4.87 | 97,623 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.81 | 52,171 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 98,962 |
| Biggest Cities in Europe | 0 | - | 4.75 | 463,044 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,485 |
| Biggest Cities by Trait #1 | 0 | - | 4.45 | 43,024 |
| Biggest City by Region | 0 | - | 4.49 | 33,581 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 53,298 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 50,838 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 90,882 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,328 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 76,384 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 43,543 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 46,965 |
| Biggest Cities in Germany | 0 | - | 4.95 | 262,412 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.90 | 28,877 |
| Biggest Cities in Sweden | 0 | - | 4.83 | 37,181 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 75,694 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 136,084 |
| Biggest City by Island | 0 | - | 4.57 | 45,724 |
| Biggest Cities in History | 0 | - | 4.50 | 80,032 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 67,896 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 40,072 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,516 |
| Cities of China (With Some Help) | 0 | - | 4.86 | 28,135 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 112,005 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 106,725 |
| Biggest Cities Starting With H | 0 | - | 4.55 | 97,446 |
| Biggest Cities Starting With L | 0 | - | 4.45 | 110,271 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 128,573 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 114,487 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 136,905 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 109,488 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,116 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,943 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 27,010 |
| Biggest City by Region #2 | 0 | - | 4.45 | 23,085 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,213 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,191 |
| Northernmost Major City by Country | 0 | - | 4.56 | 30,815 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,670 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,493 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 36,755 |
| Biggest U.S. Cities A-Z | 0 | - | 4.63 | 121,989 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,224 |
| Biggest English Cities by Century | 0 | - | 4.90 | 99,459 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,308,603 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 348,755 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 125,328 |
| Countries with Megacities | 0 | - | 4.99 | 196,405 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 170,870 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 97,550 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 94,806 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 63,498 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 247,066 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.44 | 60,266 |
| Five Biggest Cities by Country | 0 | - | 4.67 | 152,204 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 80,878 |
| Flags to Largest Cities | 0 | - | 4.54 | 31,807 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,800 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 147,776 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 96,883 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 78,656 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 114,455 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 116,043 |
| Name a World Capital A-Z | 0 | - | 4.99 | 140,642 |
| Biggest European Cities by Letter | 0 | - | 4.65 | 118,508 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 62,864 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.49 | 55,832 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 40,261 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 33,928 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 29,967 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 32,849 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 116,803 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 65,896 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 244,588 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,768 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,797 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 67,806 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.97 | 77,761 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 61,494 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,741 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,150 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 35,883 |
| Biggest Cities in Japan | 0 | - | 4.66 | 75,224 |
| Biggest Cities in Russia | 0 | - | 4.49 | 76,311 |
| Biggest Cities in France | 0 | - | 4.76 | 198,948 |
| Biggest Cities in Spain | 0 | - | 4.50 | 153,170 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 50,045 |
| Biggest Cities in Poland | 0 | - | 4.56 | 47,977 |
| Biggest Cities in the UK | 0 | - | 4.46 | 93,226 |
| Biggest Cities in China | 0 | - | 4.64 | 138,097 |
| Cities of Ireland | 0 | - | 4.43 | 39,658 |
| Biggest Cities in Canada | 0 | - | 4.66 | 120,212 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,490 |
| Biggest Cities in India | 0 | - | 4.72 | 62,276 |
| Biggest Cities in Italy | 0 | - | 4.65 | 216,670 |
| Countries of Europe by Population | 0 | - | 4.98 | 125,926 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,518 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 96,273 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 75,020 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 93,169 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 67,677 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 28,329 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,325 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.36 | 83,188 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.38 | 69,619 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.28 | 77,939 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.10 | 83,572 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 65,944 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.23 | 61,709 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.22 | 59,941 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 67,378 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 204,872 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 109,373 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.86 | 68,498 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 75,993 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,568 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 66,829 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 86,752 |
| Countries with the Most Christians | 0 | - | 4.93 | 107,091 |
| Least Christian Countries with Exceptions | 0 | - | 4.89 | 72,265 |
| Countries with the Highest Population Density | 0 | - | 4.93 | 143,485 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 142,922 |
| Countries Closest to United States A-Z | 0 | - | 4.86 | 107,146 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 99,686 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 176,659 |
| Most Populous Country by First Two Letters | 0 | - | 4.75 | 66,796 |
| Demographics Multiple Choice | 0 | - | 4.66 | 39,721 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,633 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,221 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,424 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 42,449 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 28,681 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 20,671 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,295 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 64,224 |
| All Cities in China with Population of 1 Million | 0 | - | 4.79 | 38,503 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 40,829 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 22,735 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 31,888 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 204,659 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 160,498 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 156,956 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.91 | 80,654 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.90 | 84,567 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 145,586 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 64,233 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.97 | 4,716 |
| Largest Cities in Alexander's Empire | 0 | - | 4.56 | 38,587 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.37 | 37,111 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.25 | 90,713 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 52,528 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,409 |
| Largest Nordic Cities on a Map | 0 | - | 4.76 | 23,162 |
| Biggest Urban Areas in the UK | 0 | - | 4.40 | 167,602 |
| Canadian Metro Areas over 100,000 People | 0 | - | 4.46 | 28,500 |
| Biggest Cities in Portugal | 0 | - | 4.41 | 18,759 |
