| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 130,893 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 68,992 |
| 500 Biggest US Cities | 0 | - | 4.85 | 96,606 |
| Biggest Cities in the World | 0 | - | 4.89 | 680,104 |
| Biggest Cities in Asia | 0 | - | 4.94 | 95,156 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 43,023 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 74,916 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 197,697 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 108,498 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 367,958 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.90 | 28,505 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 301,890 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 96,403 |
| Biggest Cities in the United States | 0 | - | 4.92 | 809,744 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 321,190 |
| Biggest City by Time Zone | 0 | - | 4.84 | 53,640 |
| Biggest City in Every Country | 0 | - | 4.97 | 77,847 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 167,812 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 91,080 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 94,834 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 63,687 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.85 | 70,467 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 64,438 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,050 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,199 |
| Biggest Cities in Deserts | 0 | - | 4.93 | 42,076 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 59,163 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,053 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.82 | 43,710 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.90 | 91,019 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 509,618 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 108,275 |
| Biggest Cities by Language | 0 | - | 4.95 | 212,618 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 64,552 |
| Most Populous World Capitals | 0 | - | 4.92 | 146,911 |
| Biggest European Cities by Century | 0 | - | 4.98 | 117,840 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.43 | 61,323 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 50,614 |
| Megacities on a World Map | 0 | - | 4.98 | 219,309 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 90,521 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,488 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 62,848 |
| Biggest Cities in France - Extreme | 0 | - | 4.88 | 43,096 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 83,267 |
| Biggest Cities in Germany | 0 | - | 4.95 | 261,200 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 150,247 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 31,761 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 154,061 |
| Biggest Cities in Europe | 0 | - | 4.75 | 459,188 |
| Megacities on an Empty Map | 0 | - | 4.96 | 86,935 |
| Biggest Cities in Sweden | 0 | - | 4.83 | 37,060 |
| Cities of China (With Some Help) | 0 | - | 4.86 | 28,025 |
| Biggest English Cities by Century | 0 | - | 4.89 | 99,096 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 63,323 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,395 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.49 | 55,589 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 40,095 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 33,809 |
| Biggest Cities in Washington State | 0 | - | 4.43 | 27,782 |
| Biggest Cities in California | 0 | - | 4.35 | 129,847 |
| Biggest Cities in Florida | 0 | - | 4.19 | 67,101 |
| Biggest Cities in New York State | 0 | - | 4.29 | 55,584 |
| Biggest Cities in Pennsylvania | 0 | - | 4.14 | 42,527 |
| Biggest Cities in Ohio | 0 | - | 4.36 | 45,522 |
| Biggest Cities in Texas | 0 | - | 4.26 | 110,927 |
| Biggest Cities in Wisconsin | 0 | - | 4.45 | 23,252 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,663 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,420 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,318 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.64 | 36,548 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 63,656 |
| All Cities in China with Population of 1 Million | 0 | - | 4.77 | 37,927 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 40,554 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.44 | 60,060 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,353 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 42,912 |
| Biggest City by Region | 0 | - | 4.49 | 33,470 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 53,113 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 70,348 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,247 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 73,071 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 28,608 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 46,851 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 135,782 |
| Biggest European Cities by Letter | 0 | - | 4.65 | 118,174 |
| Biggest City by Island | 0 | - | 4.57 | 45,630 |
| Biggest Cities in History | 0 | - | 4.49 | 79,595 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 67,732 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.64 | 62,756 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.37 | 36,890 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 39,926 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.24 | 89,578 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 52,412 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 35,592 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.80 | 51,872 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,340 |
| Biggest Cities in Japan | 0 | - | 4.66 | 74,970 |
| Biggest Cities in Russia | 0 | - | 4.49 | 76,002 |
| Biggest Cities in France | 0 | - | 4.76 | 197,919 |
| Biggest Cities in Spain | 0 | - | 4.50 | 152,444 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 49,767 |
| Biggest Cities in Poland | 0 | - | 4.56 | 47,732 |
| Biggest Cities in the UK | 0 | - | 4.45 | 92,726 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 32,609 |
| Biggest Cities in China | 0 | - | 4.64 | 137,247 |
| Cities of Ireland | 0 | - | 4.43 | 39,486 |
| Biggest Cities in Canada | 0 | - | 4.67 | 119,711 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,315 |
| Biggest Cities in India | 0 | - | 4.72 | 62,039 |
| Biggest Cities in Italy | 0 | - | 4.66 | 215,664 |
| Biggest Cities in New Jersey | 0 | - | 4.10 | 24,787 |
| Biggest Cities in Colorado | 0 | - | 4.04 | 29,782 |
| Biggest Cities in Virginia | 0 | - | 4.23 | 22,798 |
| Biggest Cities in Oregon | 0 | - | 4.10 | 18,608 |
| Biggest Cities in Alaska | 0 | - | 4.27 | 23,411 |
| Biggest Cities in Arizona | 0 | - | 4.28 | 28,286 |
| Biggest Cities in Illinois | 0 | - | 4.33 | 24,287 |
| Biggest Cities in Louisiana | 0 | - | 4.12 | 18,109 |
| Biggest Cities in Massachusetts | 0 | - | 4.38 | 27,413 |
| Biggest Cities in Michigan | 0 | - | 3.97 | 32,156 |
| Biggest Cities in Missouri | 0 | - | 4.20 | 15,749 |
| Biggest Cities in Tennessee | 0 | - | 4.24 | 19,027 |
| Biggest Cities in Indiana | 0 | - | 4.28 | 19,696 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 111,295 |
| Biggest Cities Starting With D | 0 | - | 4.48 | 106,327 |
| Biggest Cities Starting With H | 0 | - | 4.53 | 96,919 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 109,764 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 127,765 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 113,968 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 42,388 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,103 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 98,599 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 69,965 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,867 |
| Biggest Nordic Cities | 0 | - | 4.37 | 59,549 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 26,977 |
| Five Biggest Cities by Country | 0 | - | 4.66 | 151,270 |
| Biggest City by Region #2 | 0 | - | 4.45 | 23,015 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,155 |
| U.S. Cities by Hispanic Population | 0 | - | 4.26 | 24,468 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,080 |
| Northernmost Major City by Country | 0 | - | 4.55 | 30,707 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 20,558 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 22,669 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 192,529 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.84 | 50,653 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,303,675 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,800 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 136,330 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 108,968 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.80 | 64,707 |
| Largest Cities in Alexander's Empire | 0 | - | 4.56 | 38,524 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 80,347 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,335 |
| Largest Nordic Cities on a Map | 0 | - | 4.73 | 22,902 |
| Biggest Urban Areas in the UK | 0 | - | 4.40 | 167,216 |
| Canadian Metro Areas over 100,000 People | 0 | - | 4.45 | 28,395 |
| Biggest Cities in Portugal | 0 | - | 4.41 | 18,690 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,754 |
| Biggest Cities in Georgia | 0 | - | 3.96 | 21,451 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 147,120 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 96,292 |
| Biggest Cities Starting With K | 0 | - | 4.29 | 78,332 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 113,988 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 115,536 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,140,688 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,391 |
| Countries with Megacities | 0 | - | 4.99 | 195,083 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,737 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 97,005 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,890 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,859 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,491 |
| Biggest Cities in the Confederate States in 1860 | 0 | - | 4.39 | 22,230 |
| Biggest Cities in Colombia Quiz | 0 | - | 4.41 | 12,999 |
| Biggest Cities in Mexico | 0 | - | 4.54 | 28,867 |
| Saint Lucia Country Quiz | 0 | - | 4.66 | 16,166 |
| Biggest U.S. Cities A-Z | 0 | - | 4.59 | 121,743 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 116,441 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,476 |
| Countries of Europe by Population | 0 | - | 4.98 | 124,874 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,690 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,337 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,539 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,517 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,322 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 95,780 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 74,581 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 92,742 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 64,548 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,115 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 28,006 |
| Biggest Cities by Trait #2 | 0 | - | 4.37 | 14,090 |
| Flags to Largest Cities | 0 | - | 4.57 | 30,930 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,221 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.36 | 82,925 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.36 | 69,402 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.28 | 77,725 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.10 | 83,369 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 65,806 |
