| Biggest Cities in the World | 0 | - | 4.89 | 678,787 |
| Biggest City by Time Zone | 0 | - | 4.83 | 53,442 |
| Biggest City in Every Country | 0 | - | 4.97 | 77,600 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 167,374 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 90,852 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 94,554 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 61,374 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.85 | 70,217 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 64,248 |
| Biggest Cities in Deserts | 0 | - | 4.93 | 42,014 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 59,066 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 367,398 |
| Biggest Cities in the United States | 0 | - | 4.92 | 808,566 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 320,847 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 108,177 |
| Biggest Cities by Language | 0 | - | 4.95 | 212,454 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 64,501 |
| Most Populous World Capitals | 0 | - | 4.92 | 146,627 |
| Biggest European Cities by Century | 0 | - | 4.97 | 117,741 |
| Megacities on a World Map | 0 | - | 4.98 | 219,134 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 508,892 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,417 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 62,742 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 83,024 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 150,057 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 153,743 |
| Biggest Cities in Asia | 0 | - | 4.94 | 95,027 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 42,954 |
| Megacities on an Empty Map | 0 | - | 4.96 | 86,833 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 41,137 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 63,099 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,089 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 197,455 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 108,344 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 301,501 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 96,173 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,317 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 42,884 |
| Biggest City by Region | 0 | - | 4.48 | 33,361 |
| Most Populous 2nd Cities | 0 | - | 4.72 | 53,043 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,214 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 67,723 |
| Ten Northernmost Megacities | 0 | - | 4.49 | 46,817 |
| Ten Southernmost Megacities | 0 | - | 4.80 | 45,998 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 136,162 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 108,852 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 130,685 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.82 | 43,675 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 90,835 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 68,898 |
| 500 Biggest US Cities | 0 | - | 4.85 | 96,309 |
| Biggest Cities in Europe | 0 | - | 4.75 | 457,813 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 135,718 |
| Biggest City by Island | 0 | - | 4.57 | 45,611 |
| Biggest Cities in History | 0 | - | 4.49 | 79,491 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 67,682 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 50,553 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 90,409 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 39,876 |
| Biggest Cities in France - Extreme | 0 | - | 4.88 | 42,996 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,302 |
| Biggest Cities in Germany | 0 | - | 4.95 | 260,874 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 111,141 |
| Biggest Cities Starting With D | 0 | - | 4.48 | 106,212 |
| Biggest Cities Starting With H | 0 | - | 4.53 | 96,782 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 109,610 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 127,574 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 113,556 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 69,935 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,849 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 26,964 |
| Biggest City by Region #2 | 0 | - | 4.45 | 22,954 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,133 |
| Northernmost Major City by Country | 0 | - | 4.55 | 30,675 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.90 | 28,371 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,138 |
| Countries with Megacities | 0 | - | 4.99 | 194,739 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,457 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,853 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,691 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,698 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,048 |
| Biggest Cities in Sweden | 0 | - | 4.83 | 37,004 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 74,721 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,302,066 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,526 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,051 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,352 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,240 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.64 | 36,488 |
| Cities of China (With Some Help) | 0 | - | 4.86 | 27,998 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 80,201 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,748 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 146,929 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 96,204 |
| Biggest Cities Starting With K | 0 | - | 4.29 | 78,243 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 113,849 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 115,401 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 116,286 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,359 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,426 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,232 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,489 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,410 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 98,481 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.44 | 60,002 |
| Biggest English Cities by Century | 0 | - | 4.89 | 99,003 |
| Five Biggest Cities by Country | 0 | - | 4.66 | 151,091 |
| Biggest Cities by Trait #2 | 0 | - | 4.37 | 14,071 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 192,235 |
| Most Populous Country by First Two Letters | 0 | - | 4.73 | 66,453 |
| Demographics Multiple Choice | 0 | - | 4.66 | 39,558 |
| Biggest European Cities by Letter | 0 | - | 4.65 | 118,089 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.59 | 62,729 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.49 | 55,519 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 40,062 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 33,790 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.80 | 51,768 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 32,539 |
| Countries of Europe by Population | 0 | - | 4.98 | 124,572 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,271 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 95,626 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 74,463 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 92,587 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 64,446 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,080 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.43 | 61,274 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,637 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 27,852 |
| Flags to Largest Cities | 0 | - | 4.57 | 30,798 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 35,491 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,206 |
| Biggest Cities in Japan | 0 | - | 4.66 | 74,902 |
| Biggest Cities in Russia | 0 | - | 4.49 | 75,929 |
| Biggest Cities in France | 0 | - | 4.76 | 197,632 |
| Biggest Cities in Spain | 0 | - | 4.50 | 152,249 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 49,687 |
| Biggest Cities in Poland | 0 | - | 4.56 | 47,645 |
| Biggest Cities in the UK | 0 | - | 4.45 | 92,583 |
| Biggest Cities in China | 0 | - | 4.64 | 136,956 |
| Cities of Ireland | 0 | - | 4.43 | 39,445 |
| Biggest Cities in Canada | 0 | - | 4.67 | 119,569 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,266 |
| Biggest Cities in India | 0 | - | 4.72 | 61,937 |
| Biggest Cities in Italy | 0 | - | 4.65 | 215,433 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.36 | 82,839 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.36 | 69,337 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.28 | 77,650 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.10 | 83,303 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 65,755 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.23 | 61,509 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.22 | 59,778 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 67,188 |
| Biggest U.S. Cities A-Z | 0 | - | 4.59 | 121,675 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 204,022 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 108,844 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 68,202 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 75,650 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,332 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 66,567 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 86,288 |
| Countries with the Highest Population Density | 0 | - | 4.93 | 142,823 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 139,190 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 70,278 |
| Boundary Waters | 0 | - | 4.93 | 80,466 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 73,809 |
| Most Populous Islands | 0 | - | 4.71 | 112,024 |
| Islands by Largest City #1 | 0 | - | 4.48 | 81,939 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 203,415 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 159,419 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 156,012 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 79,932 |
| Countries by Population Decrease | 0 | - | 4.43 | 46,274 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.89 | 84,134 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 144,873 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 49,033 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 63,813 |
| Biggest Nordic Cities | 0 | - | 4.37 | 59,529 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,008 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,138 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.40 | 29,843 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 42,364 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 28,584 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 20,533 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,049 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 63,456 |
| All Cities in China with Population of 1 Million | 0 | - | 4.77 | 37,869 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 40,465 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 22,665 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 161,137 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 31,736 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,459,157 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.82 | 29,803 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.75 | 92,435 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.88 | 50,343 |
| Largest Cities in Alexander's Empire | 0 | - | 4.56 | 38,492 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.37 | 36,827 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.24 | 89,218 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 52,381 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,327 |
