| Biggest Cities in the World | 0 | - | 4.91 | 764,290 |
| Biggest City by Time Zone | 0 | - | 4.86 | 63,253 |
| Biggest City in Every Country | 0 | - | 4.98 | 92,819 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 193,398 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 104,488 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 113,844 |
| Biggest Cities with Exceptions | 0 | - | 4.88 | 74,983 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.86 | 80,643 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 403,812 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 74,808 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 46,241 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 66,694 |
| Ten Southernmost Megacities | 0 | - | 4.82 | 49,639 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 63,731 |
| Biggest Cities in the United States | 0 | - | 4.94 | 931,925 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 356,681 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 558,620 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.88 | 116,160 |
| Biggest Cities by Language | 0 | - | 4.95 | 226,435 |
| Largest City by Island | 0 | - | 4.89 | 68,623 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.92 | 68,591 |
| Most Populous World Capitals | 0 | - | 4.93 | 171,241 |
| Biggest European Cities by Century | 0 | - | 4.98 | 126,404 |
| Megacities on a World Map | 0 | - | 4.98 | 235,910 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 65,107 |
| All 3M Cities on the World Map | 0 | - | 4.94 | 71,178 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 102,647 |
| Biggest City in Each U.S. State | 0 | - | 4.83 | 163,083 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 331,675 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 163,859 |
| Biggest Cities in Asia | 0 | - | 4.94 | 105,770 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 48,147 |
| Megacities on an Empty Map | 0 | - | 4.96 | 94,586 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.94 | 48,170 |
| Biggest World Cities A-Z | 0 | - | 4.56 | 217,026 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 67,339 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 71,762 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 215,942 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 131,169 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 109,974 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 154,855 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 43,055 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 113,024 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 76,586 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.94 | 37,561 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.88 | 110,891 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.85 | 59,302 |
| Second Biggest Cities by Country | 0 | - | 4.42 | 56,099 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,009 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 44,535 |
| Biggest City by Region | 0 | - | 4.50 | 35,369 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,193 |
| Northernmost Major City by Country | 0 | - | 4.56 | 32,514 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 51,787 |
| Two Largest Cities by First Two Letters | 0 | - | 4.54 | 81,803 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 48,745 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 105,526 |
| Biggest Cities in Europe | 0 | - | 4.74 | 527,528 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 54,517 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 99,061 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 53,147 |
| Largest Nordic Cities on a Map | 0 | - | 4.83 | 35,189 |
| Biggest Cities in Germany | 0 | - | 4.95 | 284,229 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 161,419 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 119,747 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 141,551 |
| Biggest Cities in History | 0 | - | 4.52 | 87,299 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 71,245 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.54 | 42,457 |
| Biggest World Cities in 1850 | 0 | - | 4.62 | 67,338 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 89,026 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,094 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 92,288 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 45,532 |
| Biggest Cities Starting With A | 0 | - | 4.61 | 120,695 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 113,443 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 105,751 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 118,777 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 138,891 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 123,123 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 72,302 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,731 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,260 |
| Biggest Cities by Latitude | 0 | - | 4.77 | 27,188 |
| Biggest Cities by Trait #2 | 0 | - | 4.41 | 14,996 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 30,550 |
| Jewish Cities Quiz | 0 | - | 4.33 | 61,027 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.78 | 72,075 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 90,006 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.57 | 40,154 |
| Biggest U.S. Cities A-Z | 0 | - | 4.69 | 136,842 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,400,748 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 368,850 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 164,837 |
| Countries with Megacities | 0 | - | 4.99 | 224,680 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 191,136 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 108,589 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 130,230 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 76,070 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 307,492 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.47 | 63,552 |
| Biggest English Cities by Century | 0 | - | 4.90 | 104,376 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 162,516 |
| Flags to Largest Cities | 0 | - | 4.54 | 36,740 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.43 | 106,892 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.42 | 91,281 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,589 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 158,668 |
| Biggest Cities Starting With C | 0 | - | 4.10 | 102,567 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 84,616 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 122,920 |
| Biggest Cities Starting With T | 0 | - | 4.28 | 124,823 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,465 |
| Name a World Capital A-Z | 0 | - | 5.00 | 171,189 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 124,472 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 83,429 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 260,570 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 117,875 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 109,115 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 89,962 |
| Countries by Population Range - Tile Select | 0 | - | 4.86 | 56,279 |
| Biggest European Cities by Letter | 0 | - | 4.63 | 124,483 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 64,808 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 44,847 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,442 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 81,851 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 42,941 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 35,990 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.43 | 39,575 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 36,491 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 82,594 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 71,809 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 50,226 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 41,746 |
| Biggest Urban Areas in the UK | 0 | - | 4.42 | 173,926 |
| Biggest Cities in Japan | 0 | - | 4.64 | 81,063 |
| Biggest Cities in Russia | 0 | - | 4.48 | 80,800 |
| Biggest Cities in France | 0 | - | 4.72 | 216,513 |
| Biggest Cities in Spain | 0 | - | 4.63 | 165,888 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 54,517 |
| Biggest Cities in Poland | 0 | - | 4.58 | 52,211 |
| Biggest Cities in the UK | 0 | - | 4.47 | 101,496 |
| Biggest Cities in China | 0 | - | 4.48 | 152,424 |
| Cities of Ireland | 0 | - | 4.50 | 49,261 |
| Biggest Cities in Canada | 0 | - | 4.56 | 129,093 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 46,168 |
| Biggest Cities in India | 0 | - | 4.70 | 66,150 |
| Biggest Cities in Italy | 0 | - | 4.74 | 234,405 |
| Countries of Europe by Population | 0 | - | 4.98 | 170,137 |
| Most Populous Countries by Year | 0 | - | 4.81 | 105,352 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 69,948 |
| Demographics Multiple Choice | 0 | - | 4.70 | 41,615 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 93,689 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 123,099 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 103,286 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 109,423 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 86,792 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 59,088 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 77,891 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 31,140 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.75 | 43,386 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 20,897 |
| Biggest Cities in Brazil | 0 | - | 4.57 | 51,655 |
| Biggest Cities in Mexico | 0 | - | 4.50 | 37,783 |
| All Cities in China with Population of 1 Million | 0 | - | 4.78 | 43,680 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.35 | 99,137 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.15 | 104,612 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 83,707 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.17 | 78,793 |
| Biggest U.S. Cities Starting with O | 0 | - | 4.38 | 32,467 |
| Biggest U.S. Cities Starting with P | 0 | - | 4.04 | 66,414 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.26 | 72,125 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.37 | 80,319 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 217,552 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 131,829 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.86 | 73,716 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 81,858 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 65,285 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 71,435 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 94,060 |
| Countries with the Most Christians | 0 | - | 4.92 | 136,615 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 83,414 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 161,316 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 165,706 |
| Countries Closest to United States A-Z | 0 | - | 4.83 | 114,514 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 105,592 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 186,947 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 225,296 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 177,526 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 187,348 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 100,682 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 105,994 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 155,689 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 70,702 |
| Biggest Nordic Cities | 0 | - | 4.38 | 60,995 |
| U.S. Cities by Hispanic Population | 0 | - | 4.31 | 36,831 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.51 | 22,770 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 23,762 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 170,142 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 46,200 |
