| Biggest Cities in the World | 0 | - | 4.92 | 789,320 |
| Biggest City by Time Zone | 0 | - | 4.87 | 66,485 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,440 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,545 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,694 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 129,647 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,348 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,408 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,250 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,423 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 52,951 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,068 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,645 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 66,576 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,287 |
| Biggest Cities in the United States | 0 | - | 4.93 | 965,186 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,503 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 572,665 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,232 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,701 |
| Largest City by Island | 0 | - | 4.87 | 70,952 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,249 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,406 |
| Biggest European Cities by Century | 0 | - | 4.98 | 135,988 |
| Megacities on a World Map | 0 | - | 4.98 | 250,382 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,722 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,759 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,498 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 167,013 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 341,653 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,778 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,105 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,511 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,345 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,222 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,489 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,042 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,293 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,461 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,667 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,135 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,369 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,148 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,612 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,629 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,319 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,451 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,845 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,881 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,648 |
| Biggest City by Region | 0 | - | 4.50 | 35,971 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,872 |
| Northernmost Major City by Country | 0 | - | 4.56 | 32,996 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,204 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 82,888 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,234 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,257 |
| Biggest Cities in Europe | 0 | - | 4.70 | 541,600 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,615 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 124,039 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,747 |
| Biggest Cities in Germany | 0 | - | 4.95 | 290,988 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 221,192 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,482 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 122,847 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,281 |
| Biggest Cities in History | 0 | - | 4.52 | 89,049 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,063 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,157 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,865 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,150 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 94,160 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,919 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 96,889 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,008 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,400 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 115,877 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,413 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 121,805 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,041 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 125,907 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,117 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,832 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,966 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,652 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,456 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,172 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,259 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,621 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,070 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 90,992 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 48,818 |
| Biggest U.S. Cities A-Z | 0 | - | 4.69 | 138,719 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,641 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,155 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,885 |
| Countries with Megacities | 0 | - | 4.99 | 246,242 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,806 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,746 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,267 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,681 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,443 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,541 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 165,555 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 31,727 |
| Flags to Largest Cities | 0 | - | 4.55 | 50,718 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.43 | 109,221 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.42 | 93,335 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,831 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 161,632 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 104,511 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,561 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 125,674 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 127,352 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,036 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,734 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,719 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,763 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,409 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,495 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,160 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,177 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.61 | 65,293 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 50,544 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,838 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,140 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,663 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,586 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.43 | 40,147 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,513 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 83,943 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.45 | 72,692 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,430 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,192 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 43,379 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 36,736 |
| Cities on Interstate 90 on a Map | 0 | - | 4.45 | 31,901 |
| Biggest Urban Areas in the UK | 0 | - | 4.42 | 175,724 |
| Biggest Cities in Japan | 0 | - | 4.67 | 82,463 |
| Biggest Cities in Russia | 0 | - | 4.49 | 81,983 |
| Biggest Cities in France | 0 | - | 4.69 | 221,823 |
| Biggest Cities in Spain | 0 | - | 4.63 | 169,679 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 55,604 |
| Biggest Cities in Poland | 0 | - | 4.62 | 53,402 |
| Biggest Cities in the UK | 0 | - | 4.48 | 104,067 |
| Biggest Cities in China | 0 | - | 4.53 | 156,846 |
| Biggest Cities in Canada | 0 | - | 4.54 | 131,712 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 46,932 |
| Biggest Cities in India | 0 | - | 4.70 | 67,285 |
| Biggest Cities in Italy | 0 | - | 4.75 | 239,285 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,723 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,063 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,630 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,069 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,091 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,176 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,767 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,302 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,477 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,230 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 59,892 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 78,873 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.75 | 43,700 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,313 |
| Biggest Cities in Brazil | 0 | - | 4.56 | 52,688 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 38,927 |
| All Cities in China with Population of 1 Million | 0 | - | 4.80 | 45,289 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.36 | 101,385 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.15 | 106,418 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 84,992 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.17 | 80,056 |
| Biggest U.S. Cities Starting with O | 0 | - | 4.39 | 33,344 |
| Biggest U.S. Cities Starting with P | 0 | - | 4.04 | 67,163 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.27 | 73,080 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.37 | 81,284 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,316 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,170 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,186 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,512 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,490 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,726 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,109 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,272 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,814 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,004 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 168,968 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,728 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,818 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,695 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,902 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,766 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,273 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,059 |
| Biggest Nordic Cities | 0 | - | 4.36 | 61,430 |
| U.S. Cities by Hispanic Population | 0 | - | 4.31 | 37,957 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.52 | 23,363 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 24,081 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,474 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,044 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,657 |
