| Biggest Cities in the World | 0 | - | 4.89 | 688,724 |
| Biggest City by Time Zone | 0 | - | 4.84 | 54,580 |
| Biggest City in Every Country | 0 | - | 4.97 | 79,109 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 170,306 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 92,325 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 96,603 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 65,125 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.86 | 71,686 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 371,955 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 65,441 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 42,460 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 59,846 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,446 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 55,417 |
| Biggest Cities in the United States | 0 | - | 4.93 | 823,933 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 334,567 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 63,844 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,955 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 515,003 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 109,147 |
| Biggest Cities by Language | 0 | - | 4.95 | 214,199 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.94 | 64,923 |
| Most Populous World Capitals | 0 | - | 4.92 | 148,739 |
| Biggest European Cities by Century | 0 | - | 4.98 | 118,968 |
| Megacities on a World Map | 0 | - | 4.98 | 221,024 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,968 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 63,569 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 84,616 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 151,450 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,276 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 155,089 |
| Biggest Cities in Asia | 0 | - | 4.94 | 96,115 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 43,573 |
| Megacities on an Empty Map | 0 | - | 4.95 | 87,689 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 41,860 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 199,791 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 115,247 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 304,765 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 97,782 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.94 | 134,363 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 44,038 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.91 | 92,354 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 69,628 |
| 500 Biggest US Cities | 0 | - | 4.87 | 98,470 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.81 | 52,511 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,582 |
| Biggest Cities by Trait #1 | 0 | - | 4.45 | 43,106 |
| Biggest City by Region | 0 | - | 4.49 | 33,698 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 53,462 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,401 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 76,815 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,064 |
| Biggest Cities in Europe | 0 | - | 4.76 | 465,886 |
| Five Biggest Cities by Country | 0 | - | 4.67 | 152,674 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 51,005 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 91,396 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 43,966 |
| Biggest Cities in Germany | 0 | - | 4.95 | 263,588 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 29,219 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 137,426 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 109,996 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 64,554 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 136,315 |
| Biggest City by Island | 0 | - | 4.57 | 45,803 |
| Biggest Cities in History | 0 | - | 4.50 | 80,384 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 68,020 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.49 | 40,187 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,649 |
| Biggest Cities in Sweden | 0 | - | 4.82 | 37,308 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 76,552 |
| Biggest Cities Starting With A | 0 | - | 4.56 | 112,363 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 106,982 |
| Biggest Cities Starting With H | 0 | - | 4.55 | 97,814 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 110,697 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 129,046 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 114,877 |
| Asian Countries with the Shortest Names | 0 | - | 4.98 | 121,775 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,245 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,003 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 27,038 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,148 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,258 |
| Northernmost Major City by Country | 0 | - | 4.56 | 30,910 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,272 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,904 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,638 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 36,946 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,313,118 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 349,960 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 126,506 |
| Countries with Megacities | 0 | - | 4.99 | 197,791 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 172,019 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 98,233 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 95,856 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 64,203 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 248,532 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 99,626 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 60,466 |
| Biggest English Cities by Century | 0 | - | 4.90 | 99,686 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 81,377 |
| Flags to Largest Cities | 0 | - | 4.54 | 32,076 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,829 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 194,261 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 148,229 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 97,082 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 78,874 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 114,817 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 116,404 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 117,093 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 66,250 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 245,313 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 109,202 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 100,522 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 70,156 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 50,616 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 119,091 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 62,973 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.49 | 60,624 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 40,402 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 34,022 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,200 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 33,014 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.97 | 78,113 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 61,619 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,813 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 36,161 |
| Biggest Cities in Japan | 0 | - | 4.66 | 75,720 |
| Biggest Cities in Russia | 0 | - | 4.49 | 76,750 |
| Biggest Cities in France | 0 | - | 4.76 | 200,012 |
| Biggest Cities in Spain | 0 | - | 4.50 | 153,816 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 50,310 |
| Biggest Cities in Poland | 0 | - | 4.57 | 48,182 |
| Biggest Cities in the UK | 0 | - | 4.46 | 93,662 |
| Biggest Cities in China | 0 | - | 4.64 | 138,973 |
| Cities of Ireland | 0 | - | 4.43 | 39,784 |
| Biggest Cities in Canada | 0 | - | 4.66 | 120,935 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,637 |
| Biggest Cities in India | 0 | - | 4.72 | 62,497 |
| Biggest Cities in Italy | 0 | - | 4.65 | 217,594 |
| Biggest U.S. Cities A-Z | 0 | - | 4.70 | 129,868 |
| Countries of Europe by Population | 0 | - | 4.98 | 127,386 |
| Most Populous Countries by Year | 0 | - | 4.81 | 93,934 |
| Most Populous Country by First Two Letters | 0 | - | 4.75 | 67,018 |
| Demographics Multiple Choice | 0 | - | 4.66 | 39,828 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,823 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 96,817 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 75,540 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 93,676 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 70,463 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,298 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.67 | 56,379 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,622 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 28,555 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 42,493 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,402 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,477 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 64,741 |
| All Cities in China with Population of 1 Million | 0 | - | 4.79 | 38,742 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 41,071 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.39 | 87,282 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.39 | 73,445 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.31 | 81,769 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.09 | 87,462 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.18 | 69,435 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.23 | 64,940 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.23 | 60,497 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 67,843 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 205,540 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 109,727 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.86 | 68,704 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 76,232 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,736 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 67,014 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 87,073 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.93 | 1,187,648 |
| Countries with the Highest Population Density | 0 | - | 4.93 | 143,900 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 145,398 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 205,656 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 161,176 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 157,656 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 81,011 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 88,202 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 146,395 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,695 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 30,056 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 30,414 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 20,760 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 22,783 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 162,247 |
| Most Populous Islands | 0 | - | 4.71 | 112,874 |
| Islands by Largest City #1 | 0 | - | 4.48 | 82,390 |
| Countries by Population Decrease | 0 | - | 4.43 | 46,597 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 49,753 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.91 | 6,205 |
| Largest Cities in Alexander's Empire | 0 | - | 4.56 | 38,637 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.38 | 37,307 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.25 | 91,766 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 52,657 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,471 |
| Largest Nordic Cities on a Map | 0 | - | 4.76 | 23,389 |
