| Biggest Cities in the World | 0 | - | 4.90 | 701,982 |
| Biggest City by Time Zone | 0 | - | 4.85 | 55,916 |
| Biggest City in Every Country | 0 | - | 4.98 | 81,317 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 174,058 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 94,169 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 99,488 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 66,724 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.84 | 73,298 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 377,918 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 66,869 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 42,973 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 60,821 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,961 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 56,661 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 109,376 |
| Biggest Cities in the United States | 0 | - | 4.93 | 848,254 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 338,426 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 110,146 |
| Biggest Cities by Language | 0 | - | 4.95 | 216,277 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 65,343 |
| Most Populous World Capitals | 0 | - | 4.94 | 162,095 |
| Biggest European Cities by Century | 0 | - | 4.98 | 120,284 |
| Megacities on a World Map | 0 | - | 4.98 | 223,611 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 522,444 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 60,847 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 64,649 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 91,668 |
| Biggest City in Each U.S. State | 0 | - | 4.86 | 153,271 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 156,640 |
| Biggest Cities in Asia | 0 | - | 4.94 | 98,104 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 44,405 |
| Megacities on an Empty Map | 0 | - | 4.95 | 88,725 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 42,986 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 113,996 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 108,318 |
| Biggest Cities Starting With H | 0 | - | 4.57 | 99,238 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 112,182 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 130,839 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 116,256 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 64,444 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 68,552 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 203,090 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 122,583 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.98 | 309,521 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 100,093 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 98,259 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 43,368 |
| Biggest City by Region | 0 | - | 4.50 | 34,044 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 53,997 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 144,354 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 44,722 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 104,996 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,652 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 77,940 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 70,815 |
| 500 Biggest US Cities | 0 | - | 4.88 | 100,985 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.82 | 53,728 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,409 |
| Biggest Cities Starting With B | 0 | - | 4.36 | 150,333 |
| Biggest Cities Starting With C | 0 | - | 4.08 | 98,036 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 79,952 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 116,323 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 117,779 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 139,553 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 111,502 |
| Biggest Cities in Europe | 0 | - | 4.75 | 487,544 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 51,567 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 93,551 |
| Biggest Cities in France - Extreme | 0 | - | 4.90 | 45,411 |
| Biggest Cities in Germany | 0 | - | 4.95 | 267,729 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 137,423 |
| Biggest City by Island | 0 | - | 4.57 | 46,099 |
| Biggest Cities in History | 0 | - | 4.50 | 81,811 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 68,520 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 40,588 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 30,351 |
| Biggest World Cities in 1850 | 0 | - | 4.63 | 65,101 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,643 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,229 |
| Biggest Coastal City by Country | 0 | - | 4.60 | 27,140 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,371 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,433 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,211 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 39,531 |
| Biggest Cities in Sweden | 0 | - | 4.84 | 37,804 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 79,162 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,665 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 128,935 |
| Countries with Megacities | 0 | - | 4.99 | 201,704 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,227 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,888 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 98,149 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,797 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 252,813 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 69,590 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 87,249 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 37,579 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,328,150 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,218 |
| Biggest English Cities by Century | 0 | - | 4.90 | 100,497 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 83,004 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,964 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 100,571 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 61,069 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 154,684 |
| Flags to Largest Cities | 0 | - | 4.55 | 32,955 |
| Biggest World Cities A-Z | 0 | - | 4.57 | 205,813 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 118,058 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 67,384 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 248,239 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,528 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 104,234 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 72,182 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 51,301 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 120,289 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 63,319 |
| Largest World Cities With Four Letters | 0 | - | 4.38 | 43,569 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.50 | 63,097 |
| U.S. States by Second Most Populous City | 0 | - | 4.43 | 40,825 |
| Biggest "Saint" Cities - United States | 0 | - | 4.47 | 34,374 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,350 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 37,468 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 33,620 |
| Countries of Europe by Population | 0 | - | 4.98 | 131,100 |
| Most Populous Countries by Year | 0 | - | 4.81 | 95,728 |
| Most Populous Country by First Two Letters | 0 | - | 4.71 | 67,634 |
| Demographics Multiple Choice | 0 | - | 4.66 | 40,192 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 79,347 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 98,342 |
| Countries with the Most People Bordering Them | 0 | - | 4.97 | 84,524 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 95,030 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 72,895 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,563 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.97 | 78,871 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 62,046 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.50 | 42,730 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 29,188 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 37,122 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,713 |
| Biggest Cities in Japan | 0 | - | 4.65 | 76,628 |
| Biggest Cities in Russia | 0 | - | 4.49 | 77,580 |
| Biggest Cities in France | 0 | - | 4.71 | 202,823 |
| Biggest Cities in Spain | 0 | - | 4.55 | 156,150 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 51,126 |
| Biggest Cities in Poland | 0 | - | 4.57 | 49,027 |
| Biggest Cities in the UK | 0 | - | 4.46 | 95,086 |
| Biggest Cities in China | 0 | - | 4.55 | 141,528 |
| Cities of Ireland | 0 | - | 4.43 | 40,297 |
| Biggest Cities in Canada | 0 | - | 4.66 | 122,294 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 44,098 |
| Biggest Cities in India | 0 | - | 4.71 | 63,251 |
| Biggest Cities in Italy | 0 | - | 4.66 | 221,228 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.40 | 89,415 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.39 | 75,368 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.30 | 83,776 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.08 | 89,419 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 71,154 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.22 | 66,747 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.23 | 61,090 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 68,420 |
| Biggest U.S. Cities A-Z | 0 | - | 4.71 | 132,717 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 207,691 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 110,874 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 69,336 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 76,966 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 54,225 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 67,613 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 88,148 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 154,594 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 148,269 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,843 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.70 | 75,188 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.78 | 42,661 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 49,163 |
| Biggest Cities in Mexico | 0 | - | 4.50 | 34,906 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.75 | 66,560 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 41,728 |
| Most Populous Islands | 0 | - | 4.71 | 114,244 |
| Islands by Largest City #1 | 0 | - | 4.48 | 82,534 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 209,355 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 163,984 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 160,389 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 82,308 |
| Countries by Population Decrease | 0 | - | 4.43 | 46,985 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.92 | 90,677 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 147,933 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 50,373 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 65,559 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.87 | 15,691 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,912 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.39 | 30,332 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.48 | 21,173 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 22,986 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 32,479 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 163,482 |
| Boundary Waters | 0 | - | 4.93 | 81,996 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 76,336 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.89 | 51,393 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.38 | 37,865 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.24 | 95,026 |
