| Biggest Cities in the World | 0 | - | 4.91 | 792,681 |
| Biggest City by Time Zone | 0 | - | 4.88 | 66,994 |
| Biggest City in Every Country | 0 | - | 4.98 | 99,154 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 222,810 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 109,248 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 131,181 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,858 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,785 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 414,757 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,902 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,303 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,386 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,920 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 66,944 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 129,019 |
| Biggest Cities in the United States | 0 | - | 4.93 | 969,772 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 364,421 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 574,629 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 127,127 |
| Biggest Cities by Language | 0 | - | 4.96 | 244,415 |
| Largest City by Island | 0 | - | 4.87 | 71,268 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,530 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,816 |
| Biggest European Cities by Century | 0 | - | 4.99 | 144,760 |
| Megacities on a World Map | 0 | - | 4.98 | 251,817 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,960 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 74,184 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 113,267 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 167,473 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 342,955 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,262 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,913 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,663 |
| Megacities on an Empty Map | 0 | - | 4.97 | 114,864 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,489 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,639 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,221 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,969 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,953 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 114,175 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,553 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,677 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,623 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,905 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,053 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,845 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,717 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,103 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,953 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,796 |
| Biggest City by Region | 0 | - | 4.50 | 36,040 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,967 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,070 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,260 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 83,014 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,295 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,441 |
| Biggest Cities in Europe | 0 | - | 4.70 | 543,108 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,738 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 124,812 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,050 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,958 |
| Biggest World Cities A-Z | 0 | - | 4.62 | 222,034 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,103 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,357 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,641 |
| Biggest Cities in History | 0 | - | 4.52 | 89,277 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,181 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,243 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,919 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,269 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 94,837 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 45,489 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,014 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 97,518 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,218 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,734 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 116,170 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,827 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 122,157 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,691 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 126,199 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,863 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,903 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,992 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,700 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,493 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,338 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 31,347 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,702 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.73 | 73,189 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,115 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 49,163 |
| Biggest U.S. Cities A-Z | 0 | - | 4.69 | 138,875 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,016 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,402 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,920 |
| Countries with Megacities | 0 | - | 4.99 | 248,216 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,819 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,365 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,198 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,302 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,536 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,704 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 165,915 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 31,802 |
| Flags to Largest Cities | 0 | - | 4.54 | 50,953 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.43 | 109,459 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.42 | 93,645 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,865 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 162,077 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 104,914 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,768 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 126,004 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 127,662 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,315 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,162 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,596 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,161 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,637 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,959 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,528 |
| Biggest European Cities by Letter | 0 | - | 4.54 | 126,347 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,361 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 50,872 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,895 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,446 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,772 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,681 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,223 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,635 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,132 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.45 | 72,835 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,568 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,331 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 43,597 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 36,873 |
| Cities on Interstate 90 on a Map | 0 | - | 4.45 | 31,990 |
| Biggest Urban Areas in the UK | 0 | - | 4.42 | 175,961 |
| Biggest Cities in Japan | 0 | - | 4.68 | 82,668 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,121 |
| Biggest Cities in France | 0 | - | 4.69 | 222,831 |
| Biggest Cities in Spain | 0 | - | 4.63 | 170,216 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 55,740 |
| Biggest Cities in Poland | 0 | - | 4.62 | 53,567 |
| Biggest Cities in the UK | 0 | - | 4.47 | 104,368 |
| Biggest Cities in China | 0 | - | 4.53 | 157,445 |
| Biggest Cities in Canada | 0 | - | 4.54 | 132,044 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 47,030 |
| Biggest Cities in India | 0 | - | 4.70 | 67,443 |
| Biggest Cities in Italy | 0 | - | 4.75 | 239,950 |
| Countries of Europe by Population | 0 | - | 4.98 | 178,818 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,592 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,706 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,132 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,267 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,674 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,210 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,620 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,794 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,513 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 59,995 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 78,991 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.75 | 43,759 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,360 |
| Biggest Cities in Brazil | 0 | - | 4.56 | 52,835 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 39,051 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.36 | 101,642 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.16 | 106,650 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 85,173 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.17 | 80,215 |
| Biggest U.S. Cities Starting with O | 0 | - | 4.39 | 33,457 |
| Biggest U.S. Cities Starting with P | 0 | - | 4.04 | 67,273 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.28 | 73,191 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.37 | 81,426 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,776 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,548 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,438 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,808 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,697 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,955 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,419 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,959 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,237 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,369 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,408 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,443 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 182,370 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 192,230 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,189 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,935 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,646 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,313 |
| Biggest Nordic Cities | 0 | - | 4.36 | 61,489 |
| U.S. Cities by Hispanic Population | 0 | - | 4.31 | 38,085 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.52 | 23,478 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 24,121 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,795 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,243 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,831 |
