| Biggest Cities in the World | 0 | - | 4.91 | 759,669 |
| Biggest City by Time Zone | 0 | - | 4.87 | 62,632 |
| Biggest City in Every Country | 0 | - | 4.98 | 91,907 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 191,662 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 103,733 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 112,880 |
| Biggest Cities with Exceptions | 0 | - | 4.88 | 74,381 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.86 | 80,079 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 402,064 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 74,124 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 46,003 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 66,255 |
| Ten Southernmost Megacities | 0 | - | 4.82 | 49,440 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 63,203 |
| Biggest Cities in the United States | 0 | - | 4.94 | 925,708 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 355,025 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 555,703 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.88 | 115,756 |
| Biggest Cities by Language | 0 | - | 4.95 | 225,719 |
| Largest City by Island | 0 | - | 4.89 | 68,195 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.92 | 68,337 |
| Most Populous World Capitals | 0 | - | 4.93 | 170,670 |
| Biggest European Cities by Century | 0 | - | 4.98 | 126,071 |
| Megacities on a World Map | 0 | - | 4.98 | 234,879 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 64,778 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 70,681 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 101,924 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 162,411 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 330,030 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 163,201 |
| Biggest Cities in Asia | 0 | - | 4.94 | 105,231 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 47,890 |
| Megacities on an Empty Map | 0 | - | 4.96 | 94,210 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.94 | 47,821 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 67,121 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 71,539 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 215,032 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 130,526 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 109,208 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 39,940 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 45,282 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 154,269 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 42,631 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 112,460 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 76,205 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.94 | 37,007 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.88 | 109,966 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.85 | 58,816 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 100,457 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 44,469 |
| Biggest City by Region | 0 | - | 4.50 | 35,262 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,040 |
| Northernmost Major City by Country | 0 | - | 4.56 | 32,406 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 51,696 |
| Two Largest Cities by First Two Letters | 0 | - | 4.55 | 81,542 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 48,640 |
| Biggest Cities in Europe | 0 | - | 4.74 | 524,857 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 54,322 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 98,693 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 52,572 |
| Largest Nordic Cities on a Map | 0 | - | 4.83 | 34,853 |
| Biggest Cities in Germany | 0 | - | 4.95 | 282,955 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.43 | 106,454 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.42 | 90,932 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 160,750 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 119,118 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 141,305 |
| Biggest Cities in History | 0 | - | 4.52 | 86,964 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 71,092 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.54 | 42,324 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 67,176 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.86 | 87,902 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 91,433 |
| Biggest Cities Starting With A | 0 | - | 4.61 | 120,244 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 113,090 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 105,284 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 118,335 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 138,386 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 122,656 |
| Fastest Growing U.S. Cities | 0 | - | 4.37 | 72,193 |
| Second Biggest Cities by Country | 0 | - | 4.37 | 44,978 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,670 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,191 |
| Biggest Cities by Latitude | 0 | - | 4.77 | 27,132 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 30,396 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.77 | 71,913 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 89,826 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.57 | 39,983 |
| Biggest Cities in Japan | 0 | - | 4.65 | 80,818 |
| Biggest Cities in Russia | 0 | - | 4.48 | 80,540 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 54,290 |
| Biggest Cities in Poland | 0 | - | 4.58 | 51,993 |
| Cities of Ireland | 0 | - | 4.50 | 49,104 |
| Biggest Cities in Canada | 0 | - | 4.56 | 128,642 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 46,036 |
| Biggest Cities in India | 0 | - | 4.70 | 65,931 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.35 | 98,762 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.15 | 104,256 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 83,428 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.17 | 78,518 |
| Biggest U.S. Cities Starting with O | 0 | - | 4.38 | 32,278 |
| Biggest U.S. Cities Starting with P | 0 | - | 4.04 | 66,251 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.26 | 71,937 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.37 | 79,823 |
| Biggest U.S. Cities A-Z | 0 | - | 4.69 | 136,363 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,395,473 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 367,749 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 163,293 |
| Countries with Megacities | 0 | - | 4.99 | 222,996 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 190,001 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 107,927 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 129,277 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 75,369 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 304,059 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 105,249 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.49 | 63,397 |
| Biggest English Cities by Century | 0 | - | 4.90 | 104,153 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 162,014 |
| Biggest Cities in the World - 2100 | 0 | - | 4.23 | 89,490 |
| Flags to Largest Cities | 0 | - | 4.54 | 36,473 |
| Biggest Cities in Brazil | 0 | - | 4.56 | 51,473 |
| Biggest Cities in Mexico | 0 | - | 4.50 | 37,601 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,535 |
| Biggest World Cities A-Z | 0 | - | 4.56 | 216,207 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 158,162 |
| Biggest Cities Starting With C | 0 | - | 4.10 | 102,248 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 84,339 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 122,458 |
| Biggest Cities Starting With T | 0 | - | 4.28 | 124,419 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 23,695 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 123,720 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 82,998 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 259,742 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 117,331 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 108,670 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 89,502 |
| Biggest European Cities by Letter | 0 | - | 4.62 | 124,188 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 64,719 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 44,760 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,366 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 81,395 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 42,810 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 35,900 |
| Biggest Cities by Trait #2 | 0 | - | 4.40 | 14,945 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.43 | 39,462 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 36,271 |
| Canadian Metro Areas over 100,000 People | 0 | - | 4.46 | 30,246 |
| Biggest Cities in Portugal | 0 | - | 4.42 | 20,201 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 82,315 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 71,618 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 50,009 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.48 | 62,420 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 41,373 |
| Biggest Urban Areas in the UK | 0 | - | 4.41 | 173,273 |
| Biggest Cities in France | 0 | - | 4.70 | 215,599 |
| Biggest Cities in Spain | 0 | - | 4.69 | 165,184 |
| Biggest Cities in Colombia Quiz | 0 | - | 4.43 | 14,184 |
| Biggest Cities in the UK | 0 | - | 4.47 | 101,065 |
| Biggest Cities in China | 0 | - | 4.47 | 151,679 |
| Biggest Cities in Italy | 0 | - | 4.74 | 233,142 |
| Countries of Europe by Population | 0 | - | 4.98 | 168,151 |
| Most Populous Countries by Year | 0 | - | 4.81 | 104,631 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 69,820 |
| Demographics Multiple Choice | 0 | - | 4.69 | 41,490 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 92,710 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 111,645 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 102,564 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 108,831 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 86,219 |
| Jewish Cities Quiz | 0 | - | 4.33 | 60,926 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 58,939 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 77,698 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 31,035 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.75 | 43,320 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 20,798 |
| All Cities in China with Population of 1 Million | 0 | - | 4.78 | 43,415 |
| Saint Lucia Country Quiz | 0 | - | 4.65 | 17,493 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 216,897 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 131,381 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.86 | 73,422 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 81,534 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 65,081 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 71,189 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 93,667 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 160,823 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 165,144 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 222,846 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 175,317 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 171,998 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 100,039 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 105,569 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 155,174 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 70,028 |
| Biggest Nordic Cities | 0 | - | 4.38 | 60,909 |
| U.S. Cities by Hispanic Population | 0 | - | 4.30 | 36,604 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,390 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.51 | 22,679 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 169,440 |
| Most Populous Islands | 0 | - | 4.78 | 119,491 |
| Islands by Largest City #1 | 0 | - | 4.47 | 93,765 |
