| Biggest Cities in the World | 0 | - | 4.89 | 679,828 |
| Biggest City by Time Zone | 0 | - | 4.84 | 53,587 |
| Biggest City in Every Country | 0 | - | 4.97 | 77,785 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 167,721 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 91,021 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 94,769 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 63,528 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.85 | 70,407 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 367,845 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 64,385 |
| Biggest Cities in Deserts | 0 | - | 4.93 | 42,067 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 59,142 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,037 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 54,519 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 105,171 |
| Biggest Cities in the United States | 0 | - | 4.93 | 809,503 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 321,110 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 108,246 |
| Biggest Cities by Language | 0 | - | 4.95 | 212,570 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 64,536 |
| Most Populous World Capitals | 0 | - | 4.92 | 146,849 |
| Biggest European Cities by Century | 0 | - | 4.97 | 117,819 |
| Megacities on a World Map | 0 | - | 4.98 | 219,274 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 509,433 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,472 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 62,829 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 83,191 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 150,197 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 153,846 |
| Biggest Cities in Asia | 0 | - | 4.94 | 95,112 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 43,015 |
| Megacities on an Empty Map | 0 | - | 4.96 | 86,916 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 41,203 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 111,267 |
| Biggest Cities Starting With D | 0 | - | 4.48 | 106,312 |
| Biggest Cities Starting With H | 0 | - | 4.53 | 96,895 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 109,731 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 127,729 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 113,939 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 63,243 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,290 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 197,641 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 108,463 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 301,812 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 96,333 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,343 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 42,909 |
| Biggest City by Region | 0 | - | 4.49 | 33,455 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 53,098 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 130,856 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.82 | 43,705 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.90 | 90,979 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,242 |
| Two Largest Cities by First Two Letters | 0 | - | 4.59 | 71,633 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 68,978 |
| 500 Biggest US Cities | 0 | - | 4.85 | 96,531 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 46,846 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 147,093 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 96,276 |
| Biggest Cities Starting With K | 0 | - | 4.29 | 78,316 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 113,961 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 115,509 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 136,300 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 108,936 |
| Biggest Cities in Europe | 0 | - | 4.75 | 458,932 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 50,595 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 90,498 |
| Biggest Cities in France - Extreme | 0 | - | 4.88 | 43,074 |
| Biggest Cities in Germany | 0 | - | 4.95 | 261,132 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 135,764 |
| Biggest City by Island | 0 | - | 4.57 | 45,625 |
| Biggest Cities in History | 0 | - | 4.49 | 79,574 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 67,720 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 39,915 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.90 | 28,462 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,333 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 69,958 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,861 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 26,976 |
| Biggest City by Region #2 | 0 | - | 4.45 | 23,011 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,153 |
| Northernmost Major City by Country | 0 | - | 4.55 | 30,702 |
| Biggest Cities in Sweden | 0 | - | 4.83 | 37,038 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 74,880 |
| Cities of China (With Some Help) | 0 | - | 4.86 | 28,019 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,343 |
| Countries with Megacities | 0 | - | 4.99 | 195,015 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,680 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,977 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,838 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,825 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,388 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,073 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,408 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,310 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.64 | 36,535 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,303,303 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,743 |
| Biggest English Cities by Century | 0 | - | 4.89 | 99,074 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 80,321 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,753 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 98,567 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.44 | 60,049 |
| Five Biggest Cities by Country | 0 | - | 4.66 | 151,235 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 192,462 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 116,362 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,438 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,638 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,308 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,526 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,494 |
| Countries by Population Range - Tile Select | 0 | - | 4.86 | 50,065 |
| Biggest European Cities by Letter | 0 | - | 4.65 | 118,158 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.64 | 62,751 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.49 | 55,567 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 40,088 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 33,803 |
| Biggest Cities by Trait #2 | 0 | - | 4.37 | 14,089 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.80 | 51,846 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 32,590 |
| Countries of Europe by Population | 0 | - | 4.98 | 124,808 |
| Most Populous Country by First Two Letters | 0 | - | 4.72 | 66,510 |
| Demographics Multiple Choice | 0 | - | 4.66 | 39,581 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,309 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 95,756 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 74,563 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 92,715 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 64,528 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,108 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 70,333 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.43 | 61,314 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,656 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 27,986 |
| Flags to Largest Cities | 0 | - | 4.57 | 30,865 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 35,574 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,217 |
| Biggest Cities in Japan | 0 | - | 4.66 | 74,955 |
| Biggest Cities in Russia | 0 | - | 4.49 | 75,978 |
| Biggest Cities in France | 0 | - | 4.76 | 197,848 |
| Biggest Cities in Spain | 0 | - | 4.50 | 152,404 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 49,758 |
| Biggest Cities in Poland | 0 | - | 4.56 | 47,715 |
| Biggest Cities in the UK | 0 | - | 4.45 | 92,692 |
| Biggest Cities in China | 0 | - | 4.64 | 137,192 |
| Cities of Ireland | 0 | - | 4.43 | 39,478 |
| Biggest Cities in Canada | 0 | - | 4.67 | 119,691 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,301 |
| Biggest Cities in India | 0 | - | 4.72 | 62,009 |
| Biggest Cities in Italy | 0 | - | 4.66 | 215,607 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.36 | 82,906 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.36 | 69,388 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.28 | 77,710 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.10 | 83,355 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 65,795 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.23 | 61,548 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.22 | 59,806 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 67,217 |
| Biggest U.S. Cities A-Z | 0 | - | 4.59 | 121,728 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 204,142 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 108,927 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 68,242 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 75,700 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,369 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 66,613 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 86,349 |
| Countries with the Highest Population Density | 0 | - | 4.93 | 142,925 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 139,304 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,038 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,184 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 42,380 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,089 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 63,608 |
| All Cities in China with Population of 1 Million | 0 | - | 4.77 | 37,917 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 40,532 |
| Most Populous Islands | 0 | - | 4.71 | 112,108 |
| Islands by Largest City #1 | 0 | - | 4.48 | 81,956 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 203,643 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 159,593 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 156,178 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 80,007 |
| Countries by Population Decrease | 0 | - | 4.43 | 46,303 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.90 | 84,218 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 145,007 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 49,082 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 63,883 |
| Biggest Nordic Cities | 0 | - | 4.37 | 59,539 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.37 | 29,861 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 28,607 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 20,553 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 22,667 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 31,758 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 161,230 |
| Boundary Waters | 0 | - | 4.93 | 80,509 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 73,922 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.88 | 50,399 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.37 | 36,876 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.24 | 89,482 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,334 |
| Largest Nordic Cities on a Map | 0 | - | 4.72 | 22,887 |
| Biggest Urban Areas in the UK | 0 | - | 4.40 | 167,192 |
