| Biggest Cities in the World | 0 | - | 4.90 | 702,821 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 378,327 |
| Biggest Cities in the United States | 0 | - | 4.93 | 849,169 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 338,664 |
| Biggest City by Time Zone | 0 | - | 4.85 | 55,998 |
| Biggest City in Every Country | 0 | - | 4.98 | 81,451 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 174,286 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 94,266 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 99,652 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 66,827 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.84 | 73,406 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 66,951 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 43,002 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 60,892 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,991 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 56,745 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 109,546 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 110,207 |
| Biggest Cities by Language | 0 | - | 4.95 | 216,420 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 65,378 |
| Most Populous World Capitals | 0 | - | 4.94 | 162,296 |
| Biggest European Cities by Century | 0 | - | 4.98 | 120,567 |
| Megacities on a World Map | 0 | - | 4.98 | 223,739 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 522,993 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 60,916 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 64,716 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 91,945 |
| Biggest City in Each U.S. State | 0 | - | 4.86 | 153,379 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 156,742 |
| Biggest Cities in Asia | 0 | - | 4.94 | 98,232 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 44,455 |
| Megacities on an Empty Map | 0 | - | 4.95 | 88,795 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 43,051 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 64,487 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 68,592 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 203,323 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 122,713 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 309,878 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 100,288 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 144,537 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 44,764 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 105,117 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 70,914 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.87 | 101,163 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.82 | 53,805 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 51,638 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 93,641 |
| Biggest Cities in France - Extreme | 0 | - | 4.90 | 45,522 |
| Biggest Cities in Germany | 0 | - | 4.95 | 268,048 |
| Biggest Cities in Europe | 0 | - | 4.75 | 489,410 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 98,291 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 43,385 |
| Biggest City by Region | 0 | - | 4.50 | 34,059 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 54,040 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,672 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 78,007 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 30,426 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,436 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 137,493 |
| Biggest City by Island | 0 | - | 4.57 | 46,120 |
| Biggest Cities in History | 0 | - | 4.50 | 81,878 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 68,557 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 40,636 |
| Biggest World Cities in 1850 | 0 | - | 4.63 | 65,154 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 39,582 |
| Biggest Cities in Sweden | 0 | - | 4.84 | 37,850 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 79,338 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 114,090 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 108,393 |
| Biggest Cities Starting With H | 0 | - | 4.57 | 99,319 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 112,275 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 130,957 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 116,361 |
| Largest Nordic Cities on a Map | 0 | - | 4.81 | 30,616 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,686 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 139,855 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 111,583 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,670 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,251 |
| Biggest English Cities by Century | 0 | - | 4.90 | 100,540 |
| Biggest Coastal City by Country | 0 | - | 4.60 | 27,149 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,384 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,443 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,227 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 69,632 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 87,285 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 37,617 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 100,666 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 61,106 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 154,796 |
| Flags to Largest Cities | 0 | - | 4.55 | 33,006 |
| Biggest World Cities A-Z | 0 | - | 4.57 | 206,018 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,329,076 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,418 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,081 |
| Countries with Megacities | 0 | - | 4.99 | 201,899 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,420 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,984 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,281 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,906 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,127 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 120,344 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 63,341 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.50 | 63,186 |
| U.S. States by Second Most Populous City | 0 | - | 4.43 | 40,852 |
| Biggest "Saint" Cities - United States | 0 | - | 4.47 | 34,404 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 37,506 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 83,127 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 33,664 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,973 |
| Biggest Cities Starting With B | 0 | - | 4.36 | 150,441 |
| Biggest Cities Starting With C | 0 | - | 4.08 | 98,094 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 80,015 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 116,418 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 117,877 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 118,124 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 67,453 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 248,406 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,592 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 104,274 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 72,283 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 51,354 |
| Largest World Cities With Four Letters | 0 | - | 4.38 | 43,594 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 78,932 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,361 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,579 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 62,077 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.47 | 46,439 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,867 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.70 | 75,221 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.78 | 42,672 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 37,178 |
| Biggest Cities in Japan | 0 | - | 4.66 | 76,686 |
| Biggest Cities in Russia | 0 | - | 4.49 | 77,629 |
| Biggest Cities in France | 0 | - | 4.71 | 203,030 |
| Biggest Cities in Spain | 0 | - | 4.55 | 156,301 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 51,197 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 49,197 |
| Biggest Cities in Poland | 0 | - | 4.57 | 49,077 |
| Biggest Cities in Mexico | 0 | - | 4.50 | 34,952 |
| Biggest Cities in the UK | 0 | - | 4.46 | 95,175 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.75 | 66,675 |
| Biggest Cities in China | 0 | - | 4.55 | 141,773 |
| Cities of Ireland | 0 | - | 4.47 | 44,894 |
| Biggest Cities in Canada | 0 | - | 4.66 | 122,424 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 44,129 |
| Biggest Cities in India | 0 | - | 4.71 | 63,299 |
| All Cities in India with Population of 1 Million | 0 | - | 4.80 | 41,791 |
| Biggest Cities in Italy | 0 | - | 4.66 | 221,432 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.40 | 89,500 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.39 | 75,442 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.30 | 83,861 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.08 | 89,494 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 71,219 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.22 | 66,826 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.23 | 61,124 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 68,446 |
| Biggest U.S. Cities A-Z | 0 | - | 4.71 | 132,777 |
| Countries of Europe by Population | 0 | - | 4.98 | 131,367 |
| Most Populous Countries by Year | 0 | - | 4.81 | 95,822 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 79,387 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 98,427 |
| Countries with the Most People Bordering Them | 0 | - | 4.97 | 84,715 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 95,093 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 72,984 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,924 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 29,217 |
| Cities in Squares on a Map - North America | 0 | - | 4.32 | 19,733 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.48 | 21,199 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 22,995 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 32,534 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 207,835 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 110,936 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 69,367 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 77,006 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 54,255 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 67,663 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 88,205 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 154,726 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 148,377 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 209,541 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 164,125 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 160,526 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 82,381 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.92 | 90,731 |
| Most Populous Country by First Two Letters | 0 | - | 4.71 | 67,673 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 148,016 |
| Demographics Multiple Choice | 0 | - | 4.66 | 40,212 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 65,616 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.88 | 15,777 |
| Largest Cities in Alexander's Empire | 0 | - | 4.56 | 38,802 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.38 | 37,915 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.24 | 95,248 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 52,991 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.36 | 30,349 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,661 |
| Biggest Urban Areas in the UK | 0 | - | 4.40 | 169,046 |
| Canadian Metro Areas over 100,000 People | 0 | - | 4.46 | 28,883 |
| Biggest Cities in Portugal | 0 | - | 4.42 | 19,133 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 163,551 |
