| All 1M Cities by Proximity | 0 | - | 5.00 | 509,140 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,442 |
| Biggest Cities in the World | 0 | - | 4.89 | 679,208 |
| Biggest City by Time Zone | 0 | - | 4.83 | 53,496 |
| Biggest City in Every Country | 0 | - | 4.97 | 77,671 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 167,531 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 90,932 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 94,642 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 62,827 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.85 | 70,296 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 367,574 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 64,307 |
| Biggest Cities in Deserts | 0 | - | 4.93 | 42,038 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 59,102 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 54,472 |
| Biggest Cities in the United States | 0 | - | 4.92 | 808,999 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 320,968 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 108,205 |
| Biggest Cities by Language | 0 | - | 4.95 | 212,504 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 64,520 |
| Most Populous World Capitals | 0 | - | 4.92 | 146,735 |
| Biggest European Cities by Century | 0 | - | 4.97 | 117,779 |
| Megacities on a World Map | 0 | - | 4.98 | 219,190 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 62,783 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 83,089 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 150,123 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 153,796 |
| Biggest Cities in Asia | 0 | - | 4.94 | 95,065 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 42,979 |
| Megacities on an Empty Map | 0 | - | 4.96 | 86,868 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 41,163 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 39,894 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 63,118 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,118 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 197,544 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 108,407 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 301,633 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 96,241 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,329 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 42,894 |
| Biggest City by Region | 0 | - | 4.49 | 33,423 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 53,074 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 130,775 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.82 | 43,687 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.90 | 90,905 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,225 |
| Two Largest Cities by First Two Letters | 0 | - | 4.59 | 67,764 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 68,935 |
| 500 Biggest US Cities | 0 | - | 4.85 | 96,408 |
| Ten Northernmost Megacities | 0 | - | 4.49 | 46,830 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,011 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 136,221 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 108,887 |
| Biggest Cities in Europe | 0 | - | 4.75 | 458,301 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 50,573 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 90,438 |
| Biggest Cities in France - Extreme | 0 | - | 4.88 | 43,030 |
| Biggest Cities in Germany | 0 | - | 4.95 | 260,980 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 135,737 |
| Biggest City by Island | 0 | - | 4.57 | 45,613 |
| Biggest Cities in History | 0 | - | 4.49 | 79,524 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 67,702 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.90 | 28,404 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,306 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 111,208 |
| Biggest Cities Starting With D | 0 | - | 4.48 | 106,272 |
| Biggest Cities Starting With H | 0 | - | 4.53 | 96,846 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 109,681 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 127,670 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 113,876 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 69,952 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,856 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 26,972 |
| Biggest City by Region #2 | 0 | - | 4.45 | 22,992 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,138 |
| Northernmost Major City by Country | 0 | - | 4.55 | 30,690 |
| Biggest Cities in Sweden | 0 | - | 4.83 | 37,021 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 74,786 |
| Cities of China (With Some Help) | 0 | - | 4.86 | 28,007 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,218 |
| Countries with Megacities | 0 | - | 4.99 | 194,889 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,562 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,902 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,763 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,750 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,211 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,061 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,373 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,270 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.64 | 36,506 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,302,598 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,629 |
| Biggest English Cities by Century | 0 | - | 4.89 | 99,023 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 80,258 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,749 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 147,010 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 96,248 |
| Biggest Cities Starting With K | 0 | - | 4.29 | 78,286 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 113,906 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 115,462 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 98,514 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.44 | 60,026 |
| Five Biggest Cities by Country | 0 | - | 4.66 | 151,152 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 192,331 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 116,319 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,396 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,522 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,268 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,504 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,443 |
| Biggest European Cities by Letter | 0 | - | 4.65 | 118,124 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.64 | 62,741 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.49 | 55,542 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 40,076 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 33,795 |
| Biggest Cities by Trait #2 | 0 | - | 4.37 | 14,080 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.80 | 51,811 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 32,557 |
| Countries of Europe by Population | 0 | - | 4.98 | 124,661 |
| Most Populous Country by First Two Letters | 0 | - | 4.73 | 66,476 |
| Demographics Multiple Choice | 0 | - | 4.66 | 39,571 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,288 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 95,682 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 74,512 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 92,640 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 64,477 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,091 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 70,307 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.43 | 61,291 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,642 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 27,909 |
| Flags to Largest Cities | 0 | - | 4.57 | 30,827 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 35,527 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,210 |
| Biggest Cities in Japan | 0 | - | 4.66 | 74,923 |
| Biggest Cities in Russia | 0 | - | 4.49 | 75,946 |
| Biggest Cities in France | 0 | - | 4.76 | 197,726 |
| Biggest Cities in Spain | 0 | - | 4.50 | 152,327 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 49,710 |
| Biggest Cities in Poland | 0 | - | 4.56 | 47,667 |
| Biggest Cities in the UK | 0 | - | 4.45 | 92,616 |
| Biggest Cities in China | 0 | - | 4.64 | 137,053 |
| Cities of Ireland | 0 | - | 4.43 | 39,462 |
| Biggest Cities in Canada | 0 | - | 4.67 | 119,620 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,277 |
| Biggest Cities in India | 0 | - | 4.72 | 61,959 |
| Biggest Cities in Italy | 0 | - | 4.66 | 215,505 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.36 | 82,866 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.36 | 69,357 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.28 | 77,672 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.10 | 83,323 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 65,764 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.23 | 61,518 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.22 | 59,788 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 67,200 |
| Biggest U.S. Cities A-Z | 0 | - | 4.59 | 121,697 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 204,069 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 108,880 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 68,215 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 75,673 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,348 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 66,585 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 86,322 |
| Countries with the Highest Population Density | 0 | - | 4.93 | 142,865 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 139,238 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,020 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,163 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 42,368 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,070 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 63,517 |
| All Cities in China with Population of 1 Million | 0 | - | 4.77 | 37,888 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 40,492 |
| Most Populous Islands | 0 | - | 4.71 | 112,058 |
| Islands by Largest City #1 | 0 | - | 4.48 | 81,942 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 203,497 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 159,489 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 156,075 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 79,965 |
| Countries by Population Decrease | 0 | - | 4.43 | 46,285 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.90 | 84,169 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 144,934 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 49,052 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 63,842 |
| Biggest Nordic Cities | 0 | - | 4.37 | 59,537 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.37 | 29,851 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 28,599 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 20,543 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 22,665 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 31,749 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 161,178 |
| Top 10 Most Remote European Capitals | 0 | - | 4.84 | 83,666 |
| European Capitals Furthest from the Sea | 0 | - | 4.93 | 66,534 |
| Countries Closest to Africa | 0 | - | 4.95 | 144,547 |
| Boundary Waters | 0 | - | 4.93 | 80,489 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 73,869 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.88 | 50,366 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.37 | 36,848 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.24 | 89,326 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,331 |
| Largest Nordic Cities on a Map | 0 | - | 4.72 | 22,848 |
