| Biggest Cities in the World | 0 | - | 4.91 | 757,526 |
| Biggest City by Time Zone | 0 | - | 4.87 | 62,411 |
| Biggest City in Every Country | 0 | - | 4.98 | 91,530 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 191,020 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 103,425 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 112,461 |
| Biggest Cities with Exceptions | 0 | - | 4.88 | 74,126 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.86 | 79,830 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 73,848 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 45,871 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 66,024 |
| Ten Southernmost Megacities | 0 | - | 4.82 | 49,343 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 62,972 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 401,228 |
| Biggest Cities in the United States | 0 | - | 4.94 | 922,554 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 354,349 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.88 | 115,559 |
| Biggest Cities by Language | 0 | - | 4.95 | 225,383 |
| Largest City by Island | 0 | - | 4.89 | 67,971 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.92 | 68,220 |
| Most Populous World Capitals | 0 | - | 4.93 | 170,418 |
| Biggest European Cities by Century | 0 | - | 4.98 | 125,891 |
| Megacities on a World Map | 0 | - | 4.98 | 234,453 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 554,472 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 64,608 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 70,477 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 101,526 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 162,061 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 162,959 |
| Biggest Cities in Asia | 0 | - | 4.94 | 105,001 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 47,775 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 329,174 |
| Megacities on an Empty Map | 0 | - | 4.95 | 94,024 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.94 | 47,648 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 67,001 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 71,401 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 214,624 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 130,236 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 108,873 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 100,410 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 44,431 |
| Biggest City by Region | 0 | - | 4.50 | 35,214 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 55,951 |
| Northernmost Major City by Country | 0 | - | 4.56 | 32,350 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 51,651 |
| Two Largest Cities by First Two Letters | 0 | - | 4.54 | 81,428 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 48,606 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 160,432 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 118,819 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 153,996 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 42,418 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 112,202 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 76,051 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.92 | 36,687 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.88 | 109,627 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.85 | 58,635 |
| Biggest Cities in Europe | 0 | - | 4.74 | 523,578 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 141,194 |
| Biggest Cities in History | 0 | - | 4.50 | 86,463 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 71,018 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 54,215 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 98,568 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.55 | 42,264 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 52,246 |
| Largest Nordic Cities on a Map | 0 | - | 4.83 | 34,672 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 67,092 |
| Biggest Cities in Germany | 0 | - | 4.95 | 282,363 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 120,060 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 112,948 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 105,103 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 118,154 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 138,175 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 122,481 |
| Fastest Growing U.S. Cities | 0 | - | 4.37 | 72,135 |
| Second Biggest Cities by Country | 0 | - | 4.36 | 44,659 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,641 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,157 |
| Biggest Cities by Latitude | 0 | - | 4.77 | 27,105 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 162,529 |
| Countries with Megacities | 0 | - | 4.99 | 222,120 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 189,448 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 107,611 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 128,787 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 75,012 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 300,813 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.86 | 87,285 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 39,843 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 90,938 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 45,163 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,393,100 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 367,239 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.75 | 71,816 |
| Biggest Mediterranean Cities | 0 | - | 4.56 | 89,428 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.57 | 39,893 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 30,326 |
| Biggest Cities in the World - 2100 | 0 | - | 4.23 | 89,247 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,512 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 157,929 |
| Biggest Cities Starting With C | 0 | - | 4.10 | 102,133 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 84,248 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 122,287 |
| Biggest Cities Starting With T | 0 | - | 4.28 | 124,221 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 123,508 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 82,798 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 259,345 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 117,098 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 108,504 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 89,258 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 105,112 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.47 | 63,316 |
| Biggest English Cities by Century | 0 | - | 4.89 | 103,736 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 161,436 |
| Biggest Cities by Trait #2 | 0 | - | 4.40 | 14,928 |
| Flags to Largest Cities | 0 | - | 4.55 | 36,328 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.43 | 105,892 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.42 | 90,314 |
| Biggest World Cities A-Z | 0 | - | 4.61 | 215,858 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 44,711 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 69,744 |
| Demographics Multiple Choice | 0 | - | 4.68 | 41,429 |
| Biggest European Cities by Letter | 0 | - | 4.62 | 124,047 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 64,671 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,322 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 81,157 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 42,749 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 35,855 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.42 | 39,387 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 36,141 |
| Countries of Europe by Population | 0 | - | 4.98 | 167,408 |
| Most Populous Countries by Year | 0 | - | 4.81 | 104,283 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 82,197 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 110,749 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 102,122 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 108,480 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 85,929 |
| Jewish Cities Quiz | 0 | - | 4.33 | 60,870 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 71,534 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 49,909 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 30,953 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 41,183 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 20,746 |
| Biggest Urban Areas in the UK | 0 | - | 4.41 | 173,118 |
| Biggest Cities in Japan | 0 | - | 4.68 | 80,661 |
| Biggest Cities in Russia | 0 | - | 4.48 | 80,440 |
| Biggest Cities in France | 0 | - | 4.70 | 215,084 |
| Biggest Cities in Spain | 0 | - | 4.63 | 164,802 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 54,156 |
| Biggest Cities in Poland | 0 | - | 4.57 | 51,872 |
| Biggest Cities in the UK | 0 | - | 4.47 | 100,855 |
| Biggest Cities in China | 0 | - | 4.47 | 151,261 |
| Cities of Ireland | 0 | - | 4.50 | 49,033 |
| Biggest Cities in Canada | 0 | - | 4.56 | 128,423 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 45,965 |
| Biggest Cities in India | 0 | - | 4.70 | 65,840 |
| Biggest Cities in Italy | 0 | - | 4.70 | 232,659 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.35 | 98,259 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.15 | 103,822 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 83,052 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.16 | 78,216 |
| Biggest U.S. Cities Starting with O | 0 | - | 4.37 | 31,991 |
| Biggest U.S. Cities Starting with P | 0 | - | 4.03 | 65,909 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.26 | 71,669 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.32 | 72,848 |
| Biggest U.S. Cities A-Z | 0 | - | 4.69 | 136,205 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 216,277 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 131,154 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.86 | 73,285 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 81,361 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 64,976 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 71,053 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 93,482 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 160,621 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 164,868 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 82,184 |
| Boundary Waters | 0 | - | 4.91 | 86,321 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 33,551 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 92,341 |
| Most Populous Islands | 0 | - | 4.77 | 119,305 |
| Islands by Largest City #1 | 0 | - | 4.47 | 93,738 |
| Islands by Largest City #2 | 0 | - | 4.74 | 34,793 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 222,328 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 174,978 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 171,641 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 99,859 |
| Countries by Population Decrease | 0 | - | 4.45 | 48,742 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 105,456 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 154,899 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.62 | 62,361 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 69,850 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.91 | 20,398 |
| Biggest Nordic Cities | 0 | - | 4.38 | 60,872 |
| U.S. Cities by Hispanic Population | 0 | - | 4.30 | 36,505 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 58,854 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 77,605 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,350 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.75 | 43,283 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.51 | 22,627 |
| Biggest Cities in Brazil | 0 | - | 4.56 | 51,357 |
| Biggest Cities in Mexico | 0 | - | 4.50 | 37,498 |
| All Cities in China with Population of 1 Million | 0 | - | 4.78 | 43,298 |
