| Neutral European Countries of WWII | 0 | - | 4.91 | 161,940 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,273 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,921 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,724 |
| Biggest Cities in the World | 0 | - | 4.91 | 802,691 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,449 |
| Biggest Cities in the United States | 0 | - | 4.94 | 983,123 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,216 |
| Biggest City by Time Zone | 0 | - | 4.88 | 68,543 |
| Biggest City in Every Country | 0 | - | 4.98 | 101,433 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 226,475 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 111,038 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 148,104 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,411 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,970 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,596 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,368 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 70,447 |
| Ten Southernmost Megacities | 0 | - | 4.87 | 64,972 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 68,091 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 131,581 |
| Biggest English Cities by Century | 0 | - | 4.91 | 106,568 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 580,386 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 129,273 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,257 |
| Largest City by Island | 0 | - | 4.87 | 72,197 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,381 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,379 |
| Megacities on a World Map | 0 | - | 4.98 | 255,867 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,605 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,365 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 115,570 |
| Biggest City in Each U.S. State | 0 | - | 4.87 | 168,927 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,440 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,960 |
| Biggest Cities in Asia | 0 | - | 4.95 | 117,598 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,287 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 347,460 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,899 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,311 |
| Biggest Cities in History | 0 | - | 4.52 | 90,396 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 78,580 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.84 | 69,185 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,845 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,129 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,324 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,972 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,595 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 75,931 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 159,736 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,713 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,908 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.90 | 83,679 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,199 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 117,736 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,658 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,069 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 126,846 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,138 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,430 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,691 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,481 |
| Biggest Cities in Europe | 0 | - | 4.73 | 547,918 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,873 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,596 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,083 |
| Biggest City by Region | 0 | - | 4.50 | 36,315 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,231 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,742 |
| Northernmost Major City by Country | 0 | - | 4.57 | 33,261 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,400 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,423 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,495 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 96,833 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,365 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,340 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 99,503 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 47,735 |
| Vietnam War Countries | 0 | - | 4.82 | 94,457 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 165,394 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,876 |
| Largest Cities in Alexander's Empire | 0 | - | 4.58 | 40,008 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.54 | 43,528 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,641 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 116,884 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,694 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,296 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,747 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,426 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.75 | 43,891 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,755 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,777 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.64 | 107,988 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,116 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,885 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,109 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 167,027 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,875 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,588 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,645 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,408 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,781 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,640 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 67,446 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.43 | 110,352 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.42 | 94,357 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 223,656 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,450,379 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,493 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,622 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,651 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,533 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 47,046 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 91,271 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 44,090 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 32,028 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,935 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,473 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 25,877 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 38,082 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,964 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 163,120 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,523 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,307 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 127,063 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,559 |
| Countries of the German Empire | 0 | - | 4.51 | 38,080 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,312 |
| Countries with Megacities | 0 | - | 4.99 | 265,516 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,121 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,681 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,377 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,754 |
| Largest World Cities With Four Letters | 0 | - | 4.39 | 64,304 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.46 | 73,237 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,956 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,665 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 32,078 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 44,406 |
| Largest Nordic Cities on a Map | 0 | - | 4.78 | 37,267 |
| Biggest Urban Areas in the UK | 0 | - | 4.43 | 176,540 |
| Biggest Cities in Japan | 0 | - | 4.68 | 83,330 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,626 |
| Biggest Cities in France | 0 | - | 4.70 | 224,747 |
| Biggest Cities in Spain | 0 | - | 4.64 | 171,723 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 56,153 |
| Biggest Cities in Poland | 0 | - | 4.62 | 54,122 |
| Biggest Cities in the UK | 0 | - | 4.48 | 105,595 |
| Biggest Cities in China | 0 | - | 4.53 | 159,380 |
| Biggest Cities in Canada | 0 | - | 4.54 | 133,230 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 47,361 |
| Biggest Cities in India | 0 | - | 4.64 | 67,929 |
| Biggest Cities in Italy | 0 | - | 4.77 | 241,812 |
| Biggest U.S. Cities A-Z | 0 | - | 4.69 | 139,447 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,205 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,066 |
| Countries of Europe by Population | 0 | - | 4.98 | 182,054 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,502 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,054 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,348 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,681 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 93,892 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,772 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,932 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,341 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,476 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,617 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,049 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,353 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,904 |
| Biggest Nordic Cities | 0 | - | 4.36 | 61,651 |
| U.S. Cities by Hispanic Population | 0 | - | 4.32 | 38,453 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 60,361 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 79,428 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,529 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.52 | 23,666 |
| Biggest Cities in Brazil | 0 | - | 4.57 | 53,298 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 39,478 |
| Cities of Ireland | 0 | - | 4.51 | 50,790 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 24,227 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.36 | 102,351 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.16 | 107,583 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 85,685 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.17 | 80,745 |
| Biggest U.S. Cities Starting with O | 0 | - | 4.39 | 33,829 |
| Biggest U.S. Cities Starting with P | 0 | - | 4.03 | 67,596 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.28 | 73,578 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.37 | 81,802 |
| Biggest Cities in Washington State | 0 | - | 4.44 | 36,331 |
| Biggest Cities in North Carolina | 0 | - | 4.64 | 35,166 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,447 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,632 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,365 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,033 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,394 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,702 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,537 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,294 |
| Countries of the Italian Empire | 0 | - | 4.21 | 27,771 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,361 |
