| Biggest Cities in the World | 0 | - | 4.89 | 679,070 |
| Biggest City by Time Zone | 0 | - | 4.83 | 53,474 |
| Biggest City in Every Country | 0 | - | 4.97 | 77,646 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 167,470 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 90,900 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 94,614 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 62,383 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.85 | 70,267 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 64,293 |
| Biggest Cities in Deserts | 0 | - | 4.93 | 42,023 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 59,090 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 367,510 |
| Biggest Cities in the United States | 0 | - | 4.92 | 808,857 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 320,922 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 108,194 |
| Biggest Cities by Language | 0 | - | 4.95 | 212,485 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 64,514 |
| Most Populous World Capitals | 0 | - | 4.92 | 146,698 |
| Biggest European Cities by Century | 0 | - | 4.97 | 117,766 |
| Megacities on a World Map | 0 | - | 4.98 | 219,170 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 509,055 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,436 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 62,769 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 83,067 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 150,099 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 153,774 |
| Biggest Cities in Asia | 0 | - | 4.94 | 95,056 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 42,971 |
| Megacities on an Empty Map | 0 | - | 4.96 | 86,855 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 41,157 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 63,112 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,105 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 197,516 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 108,382 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 301,596 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 96,219 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,324 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 42,889 |
| Biggest City by Region | 0 | - | 4.49 | 33,401 |
| Most Populous 2nd Cities | 0 | - | 4.73 | 53,064 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,220 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 67,754 |
| Ten Northernmost Megacities | 0 | - | 4.49 | 46,828 |
| Ten Southernmost Megacities | 0 | - | 4.80 | 46,010 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 136,203 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 108,875 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 130,744 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.82 | 43,682 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 90,887 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 68,919 |
| 500 Biggest US Cities | 0 | - | 4.85 | 96,368 |
| Biggest Cities in Europe | 0 | - | 4.75 | 458,159 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 135,727 |
| Biggest City by Island | 0 | - | 4.57 | 45,612 |
| Biggest Cities in History | 0 | - | 4.49 | 79,513 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 67,696 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 50,572 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 90,429 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 39,887 |
| Biggest Cities in France - Extreme | 0 | - | 4.88 | 43,018 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,305 |
| Biggest Cities in Germany | 0 | - | 4.95 | 260,938 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 111,183 |
| Biggest Cities Starting With D | 0 | - | 4.48 | 106,252 |
| Biggest Cities Starting With H | 0 | - | 4.53 | 96,822 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 109,665 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 127,639 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 113,739 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 69,948 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,851 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 26,969 |
| Biggest City by Region #2 | 0 | - | 4.45 | 22,977 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,136 |
| Northernmost Major City by Country | 0 | - | 4.55 | 30,686 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.90 | 28,395 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,195 |
| Countries with Megacities | 0 | - | 4.99 | 194,854 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,530 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,890 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,736 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,736 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,159 |
| Biggest Cities in Sweden | 0 | - | 4.83 | 37,019 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 74,764 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,302,410 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,596 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,054 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,367 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,256 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.64 | 36,501 |
| Cities of China (With Some Help) | 0 | - | 4.86 | 28,004 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 80,241 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,749 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 146,986 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 96,232 |
| Biggest Cities Starting With K | 0 | - | 4.29 | 78,274 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 113,885 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 115,438 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 116,310 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,384 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,496 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,261 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,501 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,430 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 98,503 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.44 | 60,018 |
| Biggest English Cities by Century | 0 | - | 4.89 | 99,015 |
| Five Biggest Cities by Country | 0 | - | 4.66 | 151,129 |
| Biggest Cities by Trait #2 | 0 | - | 4.37 | 14,076 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 192,305 |
| Most Populous Country by First Two Letters | 0 | - | 4.73 | 66,473 |
| Demographics Multiple Choice | 0 | - | 4.66 | 39,565 |
| Biggest European Cities by Letter | 0 | - | 4.65 | 118,108 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.64 | 62,739 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.49 | 55,533 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 40,071 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 33,792 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.80 | 51,803 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 32,553 |
| Countries of Europe by Population | 0 | - | 4.98 | 124,630 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,286 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 95,664 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 74,497 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 92,624 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 64,461 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,085 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.43 | 61,286 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,641 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 27,889 |
| Flags to Largest Cities | 0 | - | 4.57 | 30,819 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 35,513 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,209 |
| Biggest Cities in Japan | 0 | - | 4.66 | 74,918 |
| Biggest Cities in Russia | 0 | - | 4.49 | 75,942 |
| Biggest Cities in France | 0 | - | 4.76 | 197,710 |
| Biggest Cities in Spain | 0 | - | 4.50 | 152,296 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 49,707 |
| Biggest Cities in Poland | 0 | - | 4.56 | 47,662 |
| Biggest Cities in the UK | 0 | - | 4.45 | 92,610 |
| Biggest Cities in China | 0 | - | 4.64 | 137,015 |
| Cities of Ireland | 0 | - | 4.43 | 39,461 |
| Biggest Cities in Canada | 0 | - | 4.67 | 119,601 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,273 |
| Biggest Cities in India | 0 | - | 4.72 | 61,951 |
| Biggest Cities in Italy | 0 | - | 4.66 | 215,473 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.36 | 82,855 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.36 | 69,350 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.28 | 77,662 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.10 | 83,314 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 65,759 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.23 | 61,514 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.22 | 59,782 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 67,191 |
| Biggest U.S. Cities A-Z | 0 | - | 4.59 | 121,687 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 204,054 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 108,864 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 68,209 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 75,658 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,345 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 66,581 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 86,305 |
| Countries with the Highest Population Density | 0 | - | 4.93 | 142,854 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 139,225 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 70,295 |
| Boundary Waters | 0 | - | 4.93 | 80,483 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 73,847 |
| Most Populous Islands | 0 | - | 4.71 | 112,048 |
| Islands by Largest City #1 | 0 | - | 4.48 | 81,940 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 203,467 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 159,469 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 156,053 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 79,956 |
| Countries by Population Decrease | 0 | - | 4.43 | 46,284 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.89 | 84,153 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 144,914 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 49,045 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 63,832 |
| Biggest Nordic Cities | 0 | - | 4.37 | 59,534 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,017 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,151 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.37 | 29,849 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 42,366 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 28,598 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 20,539 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,063 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 63,500 |
| All Cities in China with Population of 1 Million | 0 | - | 4.77 | 37,884 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 40,481 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 22,665 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 161,166 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 31,744 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,475,280 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.82 | 29,811 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.75 | 92,453 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.88 | 50,361 |
| Largest Cities in Alexander's Empire | 0 | - | 4.56 | 38,493 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.37 | 36,838 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.24 | 89,291 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 52,384 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,329 |
