| Neutral European Countries of WWII | 0 | - | 4.91 | 161,685 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,118 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,698 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,467 |
| Biggest Cities in the World | 0 | - | 4.91 | 800,420 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 418,492 |
| Biggest Cities in the United States | 0 | - | 4.94 | 980,371 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,624 |
| Biggest City by Time Zone | 0 | - | 4.88 | 68,216 |
| Biggest City in Every Country | 0 | - | 4.98 | 100,940 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 225,693 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 110,644 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 134,583 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,059 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,714 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,185 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,093 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 70,238 |
| Ten Southernmost Megacities | 0 | - | 4.87 | 64,768 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 67,836 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 130,967 |
| Biggest English Cities by Century | 0 | - | 4.91 | 106,436 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 579,100 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 128,987 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,878 |
| Largest City by Island | 0 | - | 4.87 | 72,015 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,134 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,269 |
| Megacities on a World Map | 0 | - | 4.98 | 255,154 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,471 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,118 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 115,040 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 168,622 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,335 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,628 |
| Biggest Cities in Asia | 0 | - | 4.95 | 117,259 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.93 | 50,184 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 346,462 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,629 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,145 |
| Biggest Cities in History | 0 | - | 4.52 | 90,258 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 77,924 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,979 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,606 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,688 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,026 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,614 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,517 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 75,547 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 159,492 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,480 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,655 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 82,776 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,991 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 117,367 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,431 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,769 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 126,429 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,919 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,854 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,373 |
| Biggest Cities in Europe | 0 | - | 4.73 | 546,981 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,696 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,555 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,028 |
| Biggest City by Region | 0 | - | 4.50 | 36,269 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,181 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,605 |
| Northernmost Major City by Country | 0 | - | 4.57 | 33,219 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,371 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,342 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,450 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 96,419 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,181 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,250 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 99,046 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,627 |
| Vietnam War Countries | 0 | - | 4.82 | 94,324 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 164,142 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,744 |
| Largest Cities in Alexander's Empire | 0 | - | 4.58 | 39,976 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,468 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,620 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,482 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 116,748 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,536 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,129 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,540 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,234 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.75 | 43,866 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,672 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,286 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 107,860 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,076 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,796 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,089 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 166,751 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,839 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,567 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,553 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,346 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,691 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,487 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 66,708 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.43 | 110,192 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.42 | 94,238 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 223,290 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,611 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,835 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,359 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,363 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,500 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 47,018 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 90,197 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 44,037 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 31,989 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,880 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,439 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 25,853 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 37,990 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,942 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 162,912 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,399 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,185 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 126,726 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,391 |
| Countries of the German Empire | 0 | - | 4.51 | 37,996 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,790 |
| Countries with Megacities | 0 | - | 4.99 | 264,348 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,650 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,417 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,917 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,484 |
| Largest World Cities With Four Letters | 0 | - | 4.39 | 64,047 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.46 | 73,166 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,892 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,605 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 32,048 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 44,231 |
| Largest Nordic Cities on a Map | 0 | - | 4.78 | 37,165 |
| Biggest Urban Areas in the UK | 0 | - | 4.43 | 176,412 |
| Biggest Cities in Japan | 0 | - | 4.68 | 83,191 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,486 |
| Biggest Cities in France | 0 | - | 4.70 | 224,302 |
| Biggest Cities in Spain | 0 | - | 4.63 | 171,364 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 56,059 |
| Biggest Cities in Poland | 0 | - | 4.62 | 53,985 |
| Biggest Cities in the UK | 0 | - | 4.48 | 105,379 |
| Biggest Cities in China | 0 | - | 4.53 | 158,917 |
| Biggest Cities in Canada | 0 | - | 4.54 | 133,004 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 47,279 |
| Biggest Cities in India | 0 | - | 4.64 | 67,815 |
| Biggest Cities in Italy | 0 | - | 4.77 | 241,382 |
| Biggest U.S. Cities A-Z | 0 | - | 4.69 | 139,335 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,019 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,865 |
| Countries of Europe by Population | 0 | - | 4.98 | 181,294 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,110 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,816 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,089 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,525 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,690 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,682 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,662 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,094 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,289 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,452 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,955 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,193 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,852 |
| Biggest Nordic Cities | 0 | - | 4.36 | 61,610 |
| U.S. Cities by Hispanic Population | 0 | - | 4.32 | 38,375 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 60,269 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 79,324 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,484 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.52 | 23,619 |
| Biggest Cities in Brazil | 0 | - | 4.56 | 53,193 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 39,395 |
| Cities of Ireland | 0 | - | 4.51 | 50,714 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 24,199 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.36 | 102,230 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.16 | 107,459 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 85,593 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.17 | 80,646 |
| Biggest U.S. Cities Starting with O | 0 | - | 4.39 | 33,767 |
| Biggest U.S. Cities Starting with P | 0 | - | 4.04 | 67,542 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.28 | 73,515 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.37 | 81,729 |
| Biggest Cities in Washington State | 0 | - | 4.44 | 36,279 |
| Biggest Cities in North Carolina | 0 | - | 4.64 | 35,112 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,169 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,450 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,280 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,873 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,314 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,618 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,380 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,751 |
| Countries of the Italian Empire | 0 | - | 4.21 | 27,719 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,132 |
