| Biggest Cities in the World | 0 | - | 4.89 | 685,240 |
| Biggest City by Time Zone | 0 | - | 4.84 | 54,211 |
| Biggest City in Every Country | 0 | - | 4.97 | 78,582 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 169,285 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 91,827 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 95,883 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 64,715 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.86 | 71,182 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 370,526 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 65,045 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 42,285 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 59,571 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,298 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.96 | 55,053 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 106,058 |
| Biggest Cities in the United States | 0 | - | 4.92 | 814,259 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 333,197 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 108,869 |
| Biggest Cities by Language | 0 | - | 4.95 | 213,660 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.94 | 64,728 |
| Most Populous World Capitals | 0 | - | 4.92 | 148,242 |
| Biggest European Cities by Century | 0 | - | 4.98 | 118,587 |
| Megacities on a World Map | 0 | - | 4.98 | 220,429 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 512,428 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,770 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 63,266 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 84,092 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 150,943 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 154,626 |
| Biggest Cities in Asia | 0 | - | 4.94 | 95,673 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 43,343 |
| Megacities on an Empty Map | 0 | - | 4.95 | 87,388 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 41,583 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 112,032 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 106,740 |
| Biggest Cities Starting With H | 0 | - | 4.55 | 97,479 |
| Biggest Cities Starting With L | 0 | - | 4.45 | 110,306 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 128,599 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 114,514 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.82 | 63,670 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,783 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 198,868 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 109,080 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 303,475 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 97,239 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,495 |
| Biggest Cities by Trait #1 | 0 | - | 4.45 | 43,026 |
| Biggest City by Region | 0 | - | 4.49 | 33,596 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 53,314 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 131,500 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 43,868 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.91 | 91,686 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,330 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 76,434 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 69,348 |
| 500 Biggest US Cities | 0 | - | 4.87 | 97,696 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.81 | 52,206 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 46,973 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 147,811 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 96,893 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 78,675 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 114,483 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 116,077 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 136,948 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 109,533 |
| Biggest Cities in Europe | 0 | - | 4.75 | 463,298 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 50,847 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 90,943 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 43,574 |
| Biggest Cities in Germany | 0 | - | 4.95 | 262,519 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 136,108 |
| Biggest City by Island | 0 | - | 4.57 | 45,732 |
| Biggest Cities in History | 0 | - | 4.50 | 80,077 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 67,903 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 40,082 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.90 | 28,912 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,529 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,130 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,950 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 27,014 |
| Biggest City by Region #2 | 0 | - | 4.45 | 23,094 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,219 |
| Northernmost Major City by Country | 0 | - | 4.56 | 30,830 |
| Biggest Cities in Sweden | 0 | - | 4.83 | 37,193 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 75,768 |
| Cities of China (With Some Help) | 0 | - | 4.86 | 28,142 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 125,413 |
| Countries with Megacities | 0 | - | 4.99 | 196,546 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 170,974 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 97,613 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 94,898 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 63,566 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 247,200 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,195 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,691 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,503 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 36,770 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,309,055 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 348,841 |
| Biggest English Cities by Century | 0 | - | 4.90 | 99,478 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 80,928 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,802 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 98,997 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.44 | 60,284 |
| Five Biggest Cities by Country | 0 | - | 4.67 | 152,249 |
| Flags to Largest Cities | 0 | - | 4.54 | 31,827 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 193,564 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 116,835 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 65,943 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 244,660 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,807 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,826 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 68,474 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 50,382 |
| Biggest European Cities by Letter | 0 | - | 4.65 | 118,527 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 62,871 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.49 | 55,855 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 40,280 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 33,936 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,155 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 32,863 |
| Countries of Europe by Population | 0 | - | 4.98 | 126,014 |
| Most Populous Country by First Two Letters | 0 | - | 4.75 | 66,822 |
| Demographics Multiple Choice | 0 | - | 4.66 | 39,727 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,535 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 96,318 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 75,069 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 93,226 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 68,701 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,233 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.97 | 77,798 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 61,504 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,753 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 28,356 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 35,912 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,331 |
| Biggest Cities in Japan | 0 | - | 4.66 | 75,236 |
| Biggest Cities in Russia | 0 | - | 4.49 | 76,325 |
| Biggest Cities in France | 0 | - | 4.76 | 199,034 |
| Biggest Cities in Spain | 0 | - | 4.50 | 153,212 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 50,067 |
| Biggest Cities in Poland | 0 | - | 4.56 | 47,993 |
| Biggest Cities in the UK | 0 | - | 4.46 | 93,267 |
| Biggest Cities in China | 0 | - | 4.64 | 138,154 |
| Cities of Ireland | 0 | - | 4.43 | 39,675 |
| Biggest Cities in Canada | 0 | - | 4.66 | 120,259 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,504 |
| Biggest Cities in India | 0 | - | 4.72 | 62,288 |
| Biggest Cities in Italy | 0 | - | 4.65 | 216,763 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.36 | 83,207 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.38 | 69,638 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.28 | 77,958 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.10 | 83,584 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 65,958 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.23 | 61,724 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.22 | 59,956 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 67,393 |
| Biggest U.S. Cities A-Z | 0 | - | 4.63 | 122,010 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 204,942 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 109,412 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.86 | 68,515 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 76,020 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,583 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 66,849 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 86,790 |
| Countries with the Highest Population Density | 0 | - | 4.93 | 143,542 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 143,665 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,235 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,439 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 42,451 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,314 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 64,275 |
| All Cities in China with Population of 1 Million | 0 | - | 4.79 | 38,530 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 40,840 |
| Most Populous Islands | 0 | - | 4.71 | 112,578 |
| Islands by Largest City #1 | 0 | - | 4.48 | 82,028 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 204,744 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 160,569 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 157,025 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.91 | 80,689 |
| Countries by Population Decrease | 0 | - | 4.43 | 46,481 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.90 | 84,587 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 145,633 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 49,377 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 64,258 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.97 | 5,104 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,639 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 29,975 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 28,689 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 20,677 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 22,745 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 31,903 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 161,720 |
| Boundary Waters | 0 | - | 4.93 | 80,981 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 74,490 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.89 | 50,665 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.37 | 37,134 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.25 | 90,845 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,414 |
| Largest Nordic Cities on a Map | 0 | - | 4.76 | 23,178 |
