| Biggest Cities in the World | 0 | - | 4.90 | 702,955 |
| Biggest City by Time Zone | 0 | - | 4.85 | 56,006 |
| Biggest City in Every Country | 0 | - | 4.98 | 81,469 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 174,313 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 94,280 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 99,670 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 66,832 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.84 | 73,417 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 378,374 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 66,962 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 43,003 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 60,904 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,999 |
| Biggest Cities in the United States | 0 | - | 4.93 | 849,315 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 338,694 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 523,106 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 110,215 |
| Biggest Cities by Language | 0 | - | 4.95 | 216,450 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 65,382 |
| Most Populous World Capitals | 0 | - | 4.94 | 162,324 |
| Biggest European Cities by Century | 0 | - | 4.98 | 120,572 |
| Megacities on a World Map | 0 | - | 4.98 | 223,756 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 60,922 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 64,724 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 91,997 |
| Biggest City in Each U.S. State | 0 | - | 4.86 | 153,390 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 156,752 |
| Biggest Cities in Asia | 0 | - | 4.94 | 98,252 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 44,463 |
| Megacities on an Empty Map | 0 | - | 4.95 | 88,805 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 64,492 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 68,597 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 203,361 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 122,732 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 309,927 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 100,320 |
| Biggest Cities in Sweden | 0 | - | 4.84 | 37,859 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 144,566 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 44,771 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 105,141 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 70,920 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.87 | 101,192 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.82 | 53,812 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 98,294 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 43,385 |
| Biggest City by Region | 0 | - | 4.50 | 34,061 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 54,044 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,678 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 78,013 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,443 |
| Biggest Cities in Europe | 0 | - | 4.75 | 489,573 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 51,654 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 93,653 |
| Biggest Cities in France - Extreme | 0 | - | 4.90 | 45,537 |
| Biggest Cities in Germany | 0 | - | 4.95 | 268,096 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 30,439 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 139,871 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 111,593 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 137,502 |
| Biggest City by Island | 0 | - | 4.57 | 46,121 |
| Biggest Cities in History | 0 | - | 4.50 | 81,888 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 68,561 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 40,639 |
| Biggest World Cities in 1850 | 0 | - | 4.63 | 65,161 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 39,592 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 79,364 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 114,107 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 108,402 |
| Biggest Cities Starting With H | 0 | - | 4.57 | 99,330 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 112,291 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 130,969 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 116,375 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,675 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,253 |
| Biggest Coastal City by Country | 0 | - | 4.60 | 27,151 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,386 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,444 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,229 |
| Largest Nordic Cities on a Map | 0 | - | 4.82 | 30,678 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,692 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 69,636 |
| Biggest Mediterranean Cities | 0 | - | 4.58 | 87,288 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 37,622 |
| Biggest Cities in Japan | 0 | - | 4.66 | 76,695 |
| Biggest Cities in Russia | 0 | - | 4.49 | 77,638 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 51,200 |
| Biggest Cities in Poland | 0 | - | 4.57 | 49,085 |
| Cities of Ireland | 0 | - | 4.47 | 45,360 |
| Biggest Cities in Canada | 0 | - | 4.66 | 122,450 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 44,134 |
| Biggest Cities in India | 0 | - | 4.71 | 63,313 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.40 | 89,519 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.39 | 75,453 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.30 | 83,873 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.08 | 89,511 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 71,227 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.22 | 66,838 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.23 | 61,132 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 68,452 |
| Biggest U.S. Cities A-Z | 0 | - | 4.71 | 132,783 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,329,201 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,451 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,100 |
| Countries with Megacities | 0 | - | 4.99 | 201,932 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,452 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,991 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,294 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,928 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,163 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 100,684 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 61,111 |
| Biggest English Cities by Century | 0 | - | 4.90 | 100,546 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 154,819 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 83,140 |
| Flags to Largest Cities | 0 | - | 4.55 | 33,015 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 49,202 |
| Biggest Cities in Mexico | 0 | - | 4.50 | 34,960 |
| All Cities in India with Population of 1 Million | 0 | - | 4.80 | 41,800 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,974 |
| Biggest World Cities A-Z | 0 | - | 4.57 | 206,036 |
| Biggest Cities Starting With B | 0 | - | 4.36 | 150,453 |
| Biggest Cities Starting With C | 0 | - | 4.08 | 98,102 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 80,024 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 116,426 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 117,886 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 22,998 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 118,134 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 67,464 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 248,424 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,602 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 104,279 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 72,295 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 120,359 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 63,346 |
| Largest World Cities With Four Letters | 0 | - | 4.38 | 43,595 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.50 | 63,199 |
| U.S. States by Second Most Populous City | 0 | - | 4.43 | 40,856 |
| Biggest "Saint" Cities - United States | 0 | - | 4.47 | 34,407 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,364 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 37,513 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 33,674 |
| Canadian Metro Areas over 100,000 People | 0 | - | 4.46 | 28,886 |
| Biggest Cities in Portugal | 0 | - | 4.42 | 19,135 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 78,943 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 62,079 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.47 | 46,539 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 37,192 |
| Biggest Cities in France | 0 | - | 4.71 | 203,064 |
| Biggest Cities in Spain | 0 | - | 4.55 | 156,320 |
| Biggest Cities in Colombia Quiz | 0 | - | 4.41 | 13,415 |
| Biggest Cities in the UK | 0 | - | 4.46 | 95,189 |
| Biggest Cities in China | 0 | - | 4.55 | 141,795 |
| Biggest Cities in Italy | 0 | - | 4.66 | 221,472 |
| Biggest U.S. Cities Starting with O | 0 | - | 4.31 | 22,387 |
| Biggest U.S. Cities Starting with P | 0 | - | 3.99 | 56,811 |
| Countries of Europe by Population | 0 | - | 4.98 | 131,392 |
| Most Populous Countries by Year | 0 | - | 4.81 | 95,836 |
| Most Populous Country by First Two Letters | 0 | - | 4.71 | 67,677 |
| Demographics Multiple Choice | 0 | - | 4.66 | 40,214 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 79,394 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 98,440 |
| Countries with the Most People Bordering Them | 0 | - | 4.97 | 84,742 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 95,104 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 72,996 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,585 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,872 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.70 | 75,226 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 29,225 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.78 | 42,673 |
| Cities in Squares on a Map - North America | 0 | - | 4.32 | 19,735 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.75 | 66,694 |
| Saint Lucia Country Quiz | 0 | - | 4.66 | 16,585 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 207,854 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 110,949 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 69,377 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 77,016 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 54,262 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 67,664 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 88,216 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 154,742 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 148,388 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 209,574 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 164,148 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 160,554 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 82,389 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.92 | 90,736 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 148,025 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 65,629 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,929 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.36 | 30,353 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.48 | 21,203 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 163,563 |
| African Capitals - Map Quiz | 0 | - | 4.95 | 53,517 |
| European Capitals - Map Quiz | 0 | - | 4.98 | 107,230 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 52,657 |
| Most Populous Islands | 0 | - | 4.71 | 114,320 |
| Islands by Largest City #1 | 0 | - | 4.48 | 82,547 |
| Countries by Population Decrease | 0 | - | 4.43 | 47,008 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 50,426 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.88 | 15,791 |
