| Biggest Cities in the World | 0 | - | 4.90 | 695,177 |
| Biggest City by Time Zone | 0 | - | 4.84 | 55,240 |
| Biggest City in Every Country | 0 | - | 4.98 | 80,166 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 172,159 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 93,218 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 98,128 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 65,960 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.84 | 72,551 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 66,169 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 42,742 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 60,315 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,715 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 56,027 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 375,229 |
| Biggest Cities in the United States | 0 | - | 4.93 | 841,978 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 336,876 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 109,634 |
| Biggest Cities by Language | 0 | - | 4.95 | 215,118 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 65,139 |
| Most Populous World Capitals | 0 | - | 4.93 | 149,605 |
| Biggest European Cities by Century | 0 | - | 4.98 | 119,755 |
| Megacities on a World Map | 0 | - | 4.98 | 222,334 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 518,938 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 60,393 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 64,093 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 85,590 |
| Biggest City in Each U.S. State | 0 | - | 4.83 | 152,287 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 155,790 |
| Biggest Cities in Asia | 0 | - | 4.94 | 97,037 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 44,009 |
| Megacities on an Empty Map | 0 | - | 4.95 | 88,242 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 42,443 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 64,142 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 68,275 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 201,810 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 121,619 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 307,280 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 98,940 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 98,075 |
| Biggest Cities by Trait #1 | 0 | - | 4.45 | 43,228 |
| Biggest City by Region | 0 | - | 4.50 | 33,891 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 53,731 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,526 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 77,377 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,235 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 138,626 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 110,689 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 141,533 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 44,341 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 103,399 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 70,254 |
| 500 Biggest US Cities | 0 | - | 4.88 | 99,640 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.82 | 53,161 |
| Biggest Cities in Europe | 0 | - | 4.76 | 469,930 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 136,742 |
| Biggest City by Island | 0 | - | 4.57 | 45,959 |
| Biggest Cities in History | 0 | - | 4.50 | 81,275 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 68,272 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 51,260 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 93,005 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 40,371 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 44,739 |
| Biggest World Cities in 1850 | 0 | - | 4.63 | 64,865 |
| Biggest Cities in Germany | 0 | - | 4.95 | 265,892 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 113,268 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 107,552 |
| Biggest Cities Starting With H | 0 | - | 4.55 | 98,533 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 111,430 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 129,861 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 115,578 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,460 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,107 |
| Biggest Coastal City by Country | 0 | - | 4.60 | 27,086 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,273 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,344 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,066 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 29,752 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 127,652 |
| Countries with Megacities | 0 | - | 4.99 | 199,868 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,452 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,021 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 97,035 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 64,992 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 250,660 |
| Biggest Cities in Sweden | 0 | - | 4.84 | 37,603 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 77,897 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,320,592 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 351,493 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,414 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.78 | 69,236 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 87,058 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 37,252 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,472 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 82,209 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,897 |
| Biggest Cities Starting With B | 0 | - | 4.36 | 149,424 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 97,605 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 79,341 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 115,682 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 117,090 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 117,578 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 66,807 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 246,872 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 109,852 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 103,881 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 71,409 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 50,963 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 100,099 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 60,762 |
| Biggest English Cities by Century | 0 | - | 4.90 | 100,092 |
| Five Biggest Cities by Country | 0 | - | 4.66 | 153,862 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,268 |
| Flags to Largest Cities | 0 | - | 4.54 | 32,528 |
| Biggest World Cities A-Z | 0 | - | 4.57 | 204,435 |
| Most Populous Country by First Two Letters | 0 | - | 4.75 | 67,364 |
| Demographics Multiple Choice | 0 | - | 4.64 | 40,014 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 119,804 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 63,137 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.50 | 62,279 |
| U.S. States by Second Most Populous City | 0 | - | 4.43 | 40,612 |
| Biggest "Saint" Cities - United States | 0 | - | 4.47 | 34,209 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.42 | 36,995 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 33,334 |
| Countries of Europe by Population | 0 | - | 4.98 | 129,337 |
| Most Populous Countries by Year | 0 | - | 4.81 | 94,792 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 79,052 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 97,550 |
| Countries with the Most People Bordering Them | 0 | - | 4.97 | 81,938 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 94,300 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 71,836 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,405 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 61,829 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.50 | 40,962 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 28,904 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 36,676 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,591 |
| Biggest Cities in Japan | 0 | - | 4.65 | 76,103 |
| Biggest Cities in Russia | 0 | - | 4.49 | 77,277 |
| Biggest Cities in France | 0 | - | 4.76 | 201,395 |
| Biggest Cities in Spain | 0 | - | 4.55 | 155,135 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 50,768 |
| Biggest Cities in Poland | 0 | - | 4.57 | 48,613 |
| Biggest Cities in the UK | 0 | - | 4.46 | 94,393 |
| Biggest Cities in China | 0 | - | 4.55 | 140,295 |
| Cities of Ireland | 0 | - | 4.43 | 40,050 |
| Biggest Cities in Canada | 0 | - | 4.66 | 121,598 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,865 |
| Biggest Cities in India | 0 | - | 4.71 | 62,867 |
| Biggest Cities in Italy | 0 | - | 4.66 | 219,441 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.40 | 88,640 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.39 | 74,671 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.32 | 82,914 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.08 | 88,717 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 70,550 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.22 | 66,090 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.23 | 60,812 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 68,143 |
| Biggest U.S. Cities A-Z | 0 | - | 4.71 | 132,316 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 206,559 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 110,297 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 69,039 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 76,580 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,981 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 67,300 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 87,605 |
| Countries with the Highest Population Density | 0 | - | 4.93 | 144,800 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 146,952 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.97 | 78,498 |
| Boundary Waters | 0 | - | 4.93 | 81,577 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 75,776 |
| Most Populous Islands | 0 | - | 4.71 | 113,418 |
| Islands by Largest City #1 | 0 | - | 4.48 | 82,468 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 207,819 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 162,937 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 159,242 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 81,817 |
| Countries by Population Decrease | 0 | - | 4.43 | 46,792 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.92 | 90,118 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 147,074 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 50,084 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 65,090 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.90 | 7,132 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,806 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,622 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.70 | 74,907 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.39 | 30,198 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.78 | 42,577 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.48 | 20,957 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,851 |
| Biggest Cities in Mexico | 0 | - | 4.50 | 34,582 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.75 | 65,688 |
| All Cities in China with Population of 1 Million | 0 | - | 4.79 | 39,091 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 41,404 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 22,895 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 162,854 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 32,232 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,385,340 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.83 | 30,572 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.75 | 93,686 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.89 | 51,126 |
