| Biggest Cities in the World | 0 | - | 4.90 | 704,343 |
| Biggest City by Time Zone | 0 | - | 4.85 | 56,155 |
| Biggest City in Every Country | 0 | - | 4.98 | 81,699 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 174,726 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 94,553 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 99,929 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 67,022 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.84 | 73,576 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 378,982 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 67,112 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 43,053 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 61,020 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 47,047 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 56,906 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 109,865 |
| Biggest Cities in the United States | 0 | - | 4.93 | 850,664 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 339,076 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 110,330 |
| Biggest Cities by Language | 0 | - | 4.95 | 216,673 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 65,426 |
| Most Populous World Capitals | 0 | - | 4.94 | 162,673 |
| Biggest European Cities by Century | 0 | - | 4.98 | 120,683 |
| Megacities on a World Map | 0 | - | 4.98 | 223,993 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 524,020 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 61,000 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 64,878 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 92,363 |
| Biggest City in Each U.S. State | 0 | - | 4.86 | 153,912 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 156,921 |
| Biggest Cities in Asia | 0 | - | 4.94 | 98,421 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 44,546 |
| Megacities on an Empty Map | 0 | - | 4.95 | 88,952 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 43,175 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 114,277 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 108,528 |
| Biggest Cities Starting With H | 0 | - | 4.57 | 99,477 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 112,487 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 131,184 |
| Biggest Cities Starting With P | 0 | - | 4.48 | 116,556 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 64,584 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 68,711 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 203,632 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 122,897 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 310,463 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 100,602 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 98,343 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 43,415 |
| Biggest City by Region | 0 | - | 4.50 | 34,097 |
| Most Populous 2nd Cities | 0 | - | 4.76 | 54,112 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 144,977 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 44,832 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.91 | 105,360 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,704 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 78,155 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 71,047 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.87 | 101,399 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.82 | 53,927 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,477 |
| Biggest Cities Starting With B | 0 | - | 4.36 | 150,688 |
| Biggest Cities Starting With C | 0 | - | 4.08 | 98,214 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 80,129 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 116,798 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 118,090 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 140,053 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 111,761 |
| Biggest Cities in Europe | 0 | - | 4.75 | 490,763 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 51,726 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 93,791 |
| Biggest Cities in France - Extreme | 0 | - | 4.90 | 45,736 |
| Biggest Cities in Germany | 0 | - | 4.95 | 268,513 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 137,618 |
| Biggest City by Island | 0 | - | 4.57 | 46,159 |
| Biggest Cities in History | 0 | - | 4.50 | 82,008 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 68,617 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 40,681 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 30,558 |
| Biggest World Cities in 1850 | 0 | - | 4.64 | 65,235 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,717 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,289 |
| Biggest Coastal City by Country | 0 | - | 4.60 | 27,163 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,415 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,461 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,252 |
| All Cities in China with Population of 1 Million | 0 | - | 4.79 | 39,681 |
| Biggest Cities in Sweden | 0 | - | 4.84 | 37,901 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 79,699 |
| Largest Nordic Cities on a Map | 0 | - | 4.82 | 30,975 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,727 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,363 |
| Countries with Megacities | 0 | - | 4.99 | 202,273 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,730 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 100,149 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,521 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 66,108 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,624 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 69,697 |
| Biggest Mediterranean Cities | 0 | - | 4.58 | 87,334 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 37,694 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,330,795 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,786 |
| Biggest English Cities by Century | 0 | - | 4.90 | 100,657 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 83,345 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,993 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 100,808 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 61,181 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 155,003 |
| Flags to Largest Cities | 0 | - | 4.55 | 33,105 |
| Biggest World Cities A-Z | 0 | - | 4.58 | 206,379 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 118,264 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 67,597 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 248,666 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,746 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 104,365 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 72,458 |
| Countries by Population Range - Tile Select | 0 | - | 4.84 | 51,448 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 120,454 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 63,399 |
| Largest World Cities With Four Letters | 0 | - | 4.38 | 43,624 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.50 | 63,352 |
| U.S. States by Second Most Populous City | 0 | - | 4.43 | 40,908 |
| Biggest "Saint" Cities - United States | 0 | - | 4.47 | 34,455 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,378 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 37,568 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 33,754 |
| Countries of Europe by Population | 0 | - | 4.98 | 131,873 |
| Most Populous Countries by Year | 0 | - | 4.81 | 96,017 |
| Most Populous Country by First Two Letters | 0 | - | 4.71 | 67,746 |
| Demographics Multiple Choice | 0 | - | 4.66 | 40,251 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 79,451 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 98,579 |
| Countries with the Most People Bordering Them | 0 | - | 4.97 | 85,070 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 95,221 |
| Densest Countries Bordering Each Other | 0 | - | 4.94 | 73,150 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,616 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 79,015 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 62,135 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.47 | 46,990 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 29,288 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 37,303 |
| Cities in Squares on a Map - North America | 0 | - | 4.32 | 19,776 |
| Biggest Cities in Japan | 0 | - | 4.66 | 76,786 |
| Biggest Cities in Russia | 0 | - | 4.49 | 77,725 |
| Biggest Cities in France | 0 | - | 4.72 | 203,625 |
| Biggest Cities in Spain | 0 | - | 4.55 | 156,584 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 51,290 |
| Biggest Cities in Poland | 0 | - | 4.57 | 49,170 |
| Biggest Cities in the UK | 0 | - | 4.46 | 95,370 |
| Biggest Cities in China | 0 | - | 4.55 | 142,106 |
| Cities of Ireland | 0 | - | 4.49 | 46,701 |
| Biggest Cities in Canada | 0 | - | 4.66 | 122,634 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 44,181 |
| Biggest Cities in India | 0 | - | 4.71 | 63,407 |
| Biggest Cities in Italy | 0 | - | 4.70 | 221,849 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.40 | 89,671 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.39 | 75,586 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.30 | 84,018 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.08 | 89,654 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 71,334 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.22 | 66,945 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.23 | 61,202 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 68,502 |
| Biggest U.S. Cities A-Z | 0 | - | 4.71 | 132,884 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 208,067 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 111,078 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 69,439 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 77,104 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 54,318 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 67,714 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 88,302 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 154,903 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 148,572 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,926 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.70 | 75,304 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.78 | 42,689 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 49,280 |
| Biggest Cities in Mexico | 0 | - | 4.51 | 35,063 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 67,134 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 41,904 |
| Most Populous Islands | 0 | - | 4.71 | 114,455 |
| Islands by Largest City #1 | 0 | - | 4.48 | 82,568 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 210,069 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 164,511 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 160,934 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 92,707 |
| Countries by Population Decrease | 0 | - | 4.43 | 47,062 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.92 | 91,066 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 148,164 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 50,505 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 65,721 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.89 | 15,909 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,960 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.36 | 30,395 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.49 | 21,250 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 23,024 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 32,586 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 163,705 |
| Boundary Waters | 0 | - | 4.93 | 82,104 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 76,585 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.89 | 51,489 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.38 | 37,989 |
