| Biggest Cities in the World | 0 | - | 4.89 | 688,424 |
| Biggest City by Time Zone | 0 | - | 4.84 | 54,548 |
| Biggest City in Every Country | 0 | - | 4.97 | 79,066 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 170,224 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 92,288 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 96,556 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 65,093 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.86 | 71,652 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 65,405 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 42,449 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 59,824 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,434 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 371,860 |
| Biggest Cities in the United States | 0 | - | 4.93 | 823,537 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 334,488 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 109,130 |
| Biggest Cities by Language | 0 | - | 4.95 | 214,161 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.94 | 64,911 |
| Most Populous World Capitals | 0 | - | 4.92 | 148,718 |
| Biggest European Cities by Century | 0 | - | 4.98 | 118,948 |
| Megacities on a World Map | 0 | - | 4.98 | 220,983 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 514,869 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,954 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 63,558 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 84,586 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 151,418 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 155,060 |
| Biggest Cities in Asia | 0 | - | 4.94 | 96,065 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 43,552 |
| Megacities on an Empty Map | 0 | - | 4.95 | 87,675 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 41,831 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 63,830 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,946 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 199,516 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 109,471 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 304,605 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 97,730 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,575 |
| Biggest Cities by Trait #1 | 0 | - | 4.45 | 43,101 |
| Biggest City by Region | 0 | - | 4.49 | 33,689 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 53,445 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,395 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 76,784 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,058 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 137,388 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 109,958 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.94 | 134,211 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.83 | 44,022 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.91 | 92,106 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 69,613 |
| 500 Biggest US Cities | 0 | - | 4.87 | 98,430 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.81 | 52,492 |
| Biggest Cities in Europe | 0 | - | 4.75 | 465,747 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 136,303 |
| Biggest City by Island | 0 | - | 4.57 | 45,797 |
| Biggest Cities in History | 0 | - | 4.50 | 80,362 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 68,014 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 50,993 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 91,187 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.49 | 40,174 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 43,941 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,635 |
| Biggest Cities in Germany | 0 | - | 4.95 | 263,514 |
| Biggest Cities Starting With A | 0 | - | 4.56 | 112,337 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 106,974 |
| Biggest Cities Starting With H | 0 | - | 4.55 | 97,791 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 110,667 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 129,025 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 114,852 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,240 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,996 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 27,037 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,146 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,255 |
| Northernmost Major City by Country | 0 | - | 4.56 | 30,902 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 29,196 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 126,438 |
| Countries with Megacities | 0 | - | 4.99 | 197,712 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,955 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 98,198 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 95,758 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 64,165 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 248,412 |
| Biggest Cities in Sweden | 0 | - | 4.82 | 37,301 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 76,500 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,312,849 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 349,922 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,271 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,886 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,630 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 36,928 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,257 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 81,349 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,829 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 148,204 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 97,068 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 78,865 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 114,801 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 116,385 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 117,082 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 66,231 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 245,274 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 109,182 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 98,935 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 70,080 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 99,602 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 60,450 |
| Biggest English Cities by Century | 0 | - | 4.90 | 99,671 |
| Five Biggest Cities by Country | 0 | - | 4.66 | 152,648 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,197 |
| Flags to Largest Cities | 0 | - | 4.54 | 32,059 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 194,203 |
| Most Populous Country by First Two Letters | 0 | - | 4.75 | 67,006 |
| Demographics Multiple Choice | 0 | - | 4.66 | 39,826 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 119,070 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 62,966 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.49 | 60,530 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 40,390 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 34,015 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 33,007 |
| Countries of Europe by Population | 0 | - | 4.98 | 127,317 |
| Most Populous Countries by Year | 0 | - | 4.81 | 93,890 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,812 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 96,788 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 75,510 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 93,648 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 70,406 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,290 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 61,610 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,811 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 28,541 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 36,142 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,397 |
| Biggest Cities in Japan | 0 | - | 4.66 | 75,711 |
| Biggest Cities in Russia | 0 | - | 4.49 | 76,745 |
| Biggest Cities in France | 0 | - | 4.76 | 199,962 |
| Biggest Cities in Spain | 0 | - | 4.50 | 153,789 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 50,284 |
| Biggest Cities in Poland | 0 | - | 4.57 | 48,162 |
| Biggest Cities in the UK | 0 | - | 4.46 | 93,629 |
| Biggest Cities in China | 0 | - | 4.64 | 138,928 |
| Cities of Ireland | 0 | - | 4.43 | 39,777 |
| Biggest Cities in Canada | 0 | - | 4.66 | 120,884 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,631 |
| Biggest Cities in India | 0 | - | 4.72 | 62,478 |
| Biggest Cities in Italy | 0 | - | 4.65 | 217,512 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.39 | 87,187 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.39 | 73,369 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.31 | 81,673 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.09 | 87,371 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.18 | 69,350 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.23 | 64,863 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.23 | 60,466 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 67,817 |
| Biggest U.S. Cities A-Z | 0 | - | 4.63 | 128,324 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 205,498 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 109,710 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.86 | 68,692 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 76,219 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,725 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 67,009 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 87,051 |
| Countries with the Highest Population Density | 0 | - | 4.93 | 143,885 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 145,337 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.97 | 78,086 |
| Boundary Waters | 0 | - | 4.93 | 81,190 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 74,934 |
| Most Populous Islands | 0 | - | 4.71 | 112,855 |
| Islands by Largest City #1 | 0 | - | 4.48 | 82,386 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 205,609 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 161,137 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 157,624 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 80,989 |
| Countries by Population Decrease | 0 | - | 4.43 | 46,582 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 87,861 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 146,370 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 49,736 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 64,529 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.91 | 6,147 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,689 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.67 | 56,367 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,614 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 30,050 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 42,489 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.47 | 30,209 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 20,746 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,465 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 64,707 |
| All Cities in China with Population of 1 Million | 0 | - | 4.79 | 38,729 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 41,056 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 22,780 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 162,216 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 32,013 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,004,202 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.82 | 30,173 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.75 | 93,209 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.89 | 50,836 |
| Largest Cities in Alexander's Empire | 0 | - | 4.56 | 38,636 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.38 | 37,290 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.25 | 91,697 |
