| Biggest Cities in the World | 0 | - | 4.89 | 677,842 |
| Biggest City by Time Zone | 0 | - | 4.82 | 53,290 |
| Biggest City in Every Country | 0 | - | 4.97 | 77,429 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 167,060 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 90,726 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 94,330 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 53,573 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.85 | 70,061 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 367,012 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 64,107 |
| Biggest Cities in Deserts | 0 | - | 4.93 | 41,952 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 58,993 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 54,325 |
| Biggest Cities in the United States | 0 | - | 4.92 | 807,688 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 320,597 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 108,107 |
| Biggest Cities by Language | 0 | - | 4.95 | 212,340 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 64,453 |
| Most Populous World Capitals | 0 | - | 4.92 | 146,459 |
| Biggest European Cities by Century | 0 | - | 4.97 | 117,636 |
| Megacities on a World Map | 0 | - | 4.98 | 218,995 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 508,397 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,365 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 62,675 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 82,867 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 149,917 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 153,619 |
| Biggest Cities in Asia | 0 | - | 4.94 | 94,925 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 42,895 |
| Megacities on an Empty Map | 0 | - | 4.96 | 86,729 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 41,063 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 111,001 |
| Biggest Cities Starting With D | 0 | - | 4.48 | 106,098 |
| Biggest Cities Starting With H | 0 | - | 4.53 | 96,670 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 109,499 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 127,440 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 113,447 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 63,058 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,055 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 197,300 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 108,226 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 301,194 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 96,035 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,294 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 42,870 |
| Biggest City by Region | 0 | - | 4.48 | 33,200 |
| Most Populous 2nd Cities | 0 | - | 4.72 | 52,976 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 130,473 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.82 | 43,649 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 90,674 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,199 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 67,639 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 68,809 |
| 500 Biggest US Cities | 0 | - | 4.85 | 96,147 |
| Ten Northernmost Megacities | 0 | - | 4.49 | 46,793 |
| Ten Southernmost Megacities | 0 | - | 4.80 | 45,983 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 146,498 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 96,087 |
| Biggest Cities Starting With K | 0 | - | 4.29 | 78,154 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 113,735 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 115,305 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 136,071 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 108,757 |
| Biggest Cities in Europe | 0 | - | 4.74 | 456,586 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 50,520 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 90,332 |
| Biggest Cities in France - Extreme | 0 | - | 4.88 | 42,892 |
| Biggest Cities in Germany | 0 | - | 4.94 | 260,662 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 135,666 |
| Biggest City by Island | 0 | - | 4.57 | 45,594 |
| Biggest Cities in History | 0 | - | 4.49 | 79,408 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 67,644 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 39,850 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.90 | 28,325 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,271 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 69,901 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,836 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 26,958 |
| Biggest City by Region #2 | 0 | - | 4.45 | 22,841 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,121 |
| Northernmost Major City by Country | 0 | - | 4.55 | 30,662 |
| Biggest Cities in Sweden | 0 | - | 4.83 | 36,974 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 74,547 |
| Cities of China (With Some Help) | 0 | - | 4.86 | 27,974 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 123,992 |
| Countries with Megacities | 0 | - | 4.99 | 194,512 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,257 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,752 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,544 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,621 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 244,794 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,042 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,301 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,187 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.64 | 36,449 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,301,134 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,364 |
| Biggest English Cities by Century | 0 | - | 4.89 | 98,859 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 80,109 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,742 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 98,421 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.46 | 59,961 |
| Five Biggest Cities by Country | 0 | - | 4.66 | 150,986 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 192,048 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 116,220 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,272 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,259 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,156 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,449 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,347 |
| Countries by Population Range - Tile Select | 0 | - | 4.86 | 49,962 |
| Biggest European Cities by Letter | 0 | - | 4.64 | 118,039 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.59 | 62,705 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.49 | 55,476 |
| U.S. States by Second Most Populous City | 0 | - | 4.44 | 40,019 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 33,765 |
| Biggest Cities by Trait #2 | 0 | - | 4.37 | 14,065 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.79 | 51,719 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 32,502 |
| Countries of Europe by Population | 0 | - | 4.98 | 124,387 |
| Most Populous Country by First Two Letters | 0 | - | 4.73 | 66,401 |
| Demographics Multiple Choice | 0 | - | 4.66 | 39,534 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,225 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 95,556 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 74,378 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 92,518 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 64,382 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,066 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 70,233 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.43 | 61,239 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,623 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 27,646 |
| Flags to Largest Cities | 0 | - | 4.57 | 30,745 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 35,436 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,190 |
| Biggest Cities in Japan | 0 | - | 4.65 | 74,859 |
| Biggest Cities in Russia | 0 | - | 4.49 | 75,879 |
| Biggest Cities in France | 0 | - | 4.76 | 197,244 |
| Biggest Cities in Spain | 0 | - | 4.50 | 152,121 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 49,643 |
| Biggest Cities in Poland | 0 | - | 4.56 | 47,603 |
| Biggest Cities in the UK | 0 | - | 4.45 | 92,490 |
| Biggest Cities in China | 0 | - | 4.64 | 136,720 |
| Cities of Ireland | 0 | - | 4.43 | 39,429 |
| Biggest Cities in Canada | 0 | - | 4.67 | 119,494 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,235 |
| Biggest Cities in India | 0 | - | 4.72 | 61,906 |
| Biggest Cities in Italy | 0 | - | 4.65 | 215,249 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.36 | 82,786 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.36 | 69,288 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.28 | 77,599 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.10 | 83,259 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 65,723 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.23 | 61,480 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.22 | 59,751 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 67,161 |
| Biggest U.S. Cities A-Z | 0 | - | 4.59 | 121,632 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 203,902 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 108,761 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 68,161 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 75,593 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,299 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 66,521 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 86,227 |
| Countries with the Highest Population Density | 0 | - | 4.93 | 142,742 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 139,122 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 55,977 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,103 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 42,357 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,021 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.74 | 63,368 |
| All Cities in China with Population of 1 Million | 0 | - | 4.77 | 37,798 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 40,429 |
| Most Populous Islands | 0 | - | 4.71 | 111,967 |
| Islands by Largest City #1 | 0 | - | 4.48 | 81,930 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 203,243 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 159,308 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 155,893 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 79,880 |
| Countries by Population Decrease | 0 | - | 4.43 | 46,247 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.89 | 83,786 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 144,760 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 48,993 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 63,745 |
| Biggest Nordic Cities | 0 | - | 4.37 | 59,513 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.40 | 29,821 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 28,570 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 20,517 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 22,658 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 31,710 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 161,060 |
| Boundary Waters | 0 | - | 4.93 | 80,425 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 73,727 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.88 | 50,307 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.37 | 36,784 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.24 | 88,976 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,315 |
| Largest Nordic Cities on a Map | 0 | - | 4.72 | 22,775 |
| Biggest Urban Areas in the UK | 0 | - | 4.40 | 167,051 |
| Canadian Metro Areas over 100,000 People | 0 | - | 4.45 | 28,351 |
