| Biggest Cities in the World | 0 | - | 4.90 | 703,448 |
| Biggest City by Time Zone | 0 | - | 4.85 | 56,061 |
| Biggest City in Every Country | 0 | - | 4.98 | 81,541 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 174,477 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 94,364 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 99,748 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 66,883 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.84 | 73,463 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 67,007 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 43,023 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 60,943 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 47,021 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 56,809 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 109,704 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 378,578 |
| Biggest Cities in the United States | 0 | - | 4.93 | 849,773 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 338,822 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 110,255 |
| Biggest Cities by Language | 0 | - | 4.95 | 216,527 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 65,394 |
| Most Populous World Capitals | 0 | - | 4.94 | 162,449 |
| Biggest European Cities by Century | 0 | - | 4.98 | 120,611 |
| Megacities on a World Map | 0 | - | 4.98 | 223,827 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 523,455 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 60,950 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 64,763 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 92,150 |
| Biggest City in Each U.S. State | 0 | - | 4.86 | 153,554 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 156,809 |
| Biggest Cities in Asia | 0 | - | 4.94 | 98,327 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 44,484 |
| Megacities on an Empty Map | 0 | - | 4.95 | 88,842 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 43,102 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 64,515 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 68,634 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 203,467 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 122,793 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 310,117 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 100,430 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 98,304 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 43,392 |
| Biggest City by Region | 0 | - | 4.50 | 34,068 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 54,065 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,692 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 78,061 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,456 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 139,925 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 111,644 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 144,660 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 44,798 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 105,228 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 70,970 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.87 | 101,273 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.82 | 53,855 |
| Biggest Cities in Europe | 0 | - | 4.75 | 490,040 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 137,545 |
| Biggest City by Island | 0 | - | 4.57 | 46,132 |
| Biggest Cities in History | 0 | - | 4.50 | 81,926 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 68,584 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 51,690 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 93,719 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 40,657 |
| Biggest Cities in France - Extreme | 0 | - | 4.90 | 45,623 |
| Biggest World Cities in 1850 | 0 | - | 4.63 | 65,184 |
| Biggest Cities in Germany | 0 | - | 4.95 | 268,246 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 114,169 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 108,444 |
| Biggest Cities Starting With H | 0 | - | 4.57 | 99,378 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 112,370 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 131,056 |
| Biggest Cities Starting With P | 0 | - | 4.48 | 116,448 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,686 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,263 |
| Biggest Coastal City by Country | 0 | - | 4.60 | 27,153 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,395 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,447 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,237 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 30,477 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,182 |
| Countries with Megacities | 0 | - | 4.99 | 202,042 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,545 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 100,048 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,353 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,977 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,305 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 39,618 |
| Biggest Cities in Sweden | 0 | - | 4.84 | 37,875 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 79,494 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,329,699 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,564 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 69,655 |
| Biggest Mediterranean Cities | 0 | - | 4.58 | 87,303 |
| Largest Nordic Cities on a Map | 0 | - | 4.82 | 30,841 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 37,649 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,704 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 83,224 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,979 |
| Biggest Cities Starting With B | 0 | - | 4.36 | 150,527 |
| Biggest Cities Starting With C | 0 | - | 4.08 | 98,144 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 80,061 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 116,694 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 117,968 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 118,174 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 67,500 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 248,490 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,657 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 104,296 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 72,339 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 51,392 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 100,725 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 61,127 |
| Biggest English Cities by Century | 0 | - | 4.90 | 100,580 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 154,884 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,368 |
| Flags to Largest Cities | 0 | - | 4.55 | 33,038 |
| Biggest World Cities A-Z | 0 | - | 4.57 | 206,179 |
| Largest World Cities With Four Letters | 0 | - | 4.38 | 43,608 |
| Most Populous Country by First Two Letters | 0 | - | 4.71 | 67,698 |
| Demographics Multiple Choice | 0 | - | 4.66 | 40,224 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 120,388 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 63,359 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.50 | 63,242 |
| U.S. States by Second Most Populous City | 0 | - | 4.43 | 40,869 |
| Biggest "Saint" Cities - United States | 0 | - | 4.47 | 34,426 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 37,529 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 33,694 |
| Countries of Europe by Population | 0 | - | 4.98 | 131,525 |
| Most Populous Countries by Year | 0 | - | 4.81 | 95,895 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 79,411 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 98,482 |
| Countries with the Most People Bordering Them | 0 | - | 4.97 | 84,856 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 95,144 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 73,049 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,595 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 62,098 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.47 | 46,807 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 29,244 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 37,238 |
| Cities in Squares on a Map - North America | 0 | - | 4.32 | 19,752 |
| Biggest Cities in Japan | 0 | - | 4.66 | 76,718 |
| Biggest Cities in Russia | 0 | - | 4.49 | 77,662 |
| Biggest Cities in France | 0 | - | 4.72 | 203,396 |
| Biggest Cities in Spain | 0 | - | 4.55 | 156,409 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 51,229 |
| Biggest Cities in Poland | 0 | - | 4.57 | 49,116 |
| Biggest Cities in the UK | 0 | - | 4.46 | 95,233 |
| Biggest Cities in China | 0 | - | 4.55 | 141,900 |
| Cities of Ireland | 0 | - | 4.49 | 46,296 |
| Biggest Cities in Canada | 0 | - | 4.66 | 122,510 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 44,149 |
| Biggest Cities in India | 0 | - | 4.71 | 63,343 |
| Biggest Cities in Italy | 0 | - | 4.66 | 221,585 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.40 | 89,563 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.39 | 75,491 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.30 | 83,917 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.08 | 89,545 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 71,249 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.22 | 66,864 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.23 | 61,146 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 68,468 |
| Biggest U.S. Cities A-Z | 0 | - | 4.71 | 132,821 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 207,920 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 110,988 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 69,394 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 77,040 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 54,285 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 67,679 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 88,244 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 154,794 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 148,450 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 78,978 |
| Boundary Waters | 0 | - | 4.93 | 82,062 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 76,489 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 52,625 |
| Most Populous Islands | 0 | - | 4.71 | 114,367 |
| Islands by Largest City #1 | 0 | - | 4.48 | 82,550 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 209,679 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 164,263 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 160,638 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 82,444 |
| Countries by Population Decrease | 0 | - | 4.43 | 47,031 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.92 | 90,775 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 148,079 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 50,454 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 65,652 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.88 | 15,829 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,938 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,892 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.70 | 75,255 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.36 | 30,367 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.78 | 42,679 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.48 | 21,213 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 49,221 |
| Biggest Cities in Mexico | 0 | - | 4.51 | 34,996 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 66,966 |
| All Cities in India with Population of 1 Million | 0 | - | 4.80 | 41,855 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 23,004 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 163,603 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 32,560 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,806,069 |
