| Biggest Cities in the World | 0 | - | 4.90 | 703,632 |
| Biggest City by Time Zone | 0 | - | 4.85 | 56,082 |
| Biggest City in Every Country | 0 | - | 4.98 | 81,578 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 174,521 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 94,398 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 99,791 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 66,921 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.84 | 73,488 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 378,652 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 67,029 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 43,032 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 60,956 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 47,028 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 56,829 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 109,752 |
| Biggest Cities in the United States | 0 | - | 4.93 | 849,962 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 338,887 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 110,267 |
| Biggest Cities by Language | 0 | - | 4.95 | 216,557 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 65,397 |
| Most Populous World Capitals | 0 | - | 4.93 | 162,501 |
| Biggest European Cities by Century | 0 | - | 4.98 | 120,627 |
| Megacities on a World Map | 0 | - | 4.98 | 223,852 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 523,585 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 60,960 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 64,778 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 92,198 |
| Biggest City in Each U.S. State | 0 | - | 4.86 | 153,786 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 156,827 |
| Biggest Cities in Asia | 0 | - | 4.94 | 98,342 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 44,493 |
| Megacities on an Empty Map | 0 | - | 4.95 | 88,859 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 43,124 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 64,539 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 68,664 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 203,513 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 122,814 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 310,188 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 100,476 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 144,707 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 44,802 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.91 | 105,256 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 70,989 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.87 | 101,303 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.82 | 53,884 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 98,313 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 43,397 |
| Biggest City by Region | 0 | - | 4.50 | 34,074 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 54,076 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 51,695 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 93,737 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,695 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 78,077 |
| Biggest Cities in France - Extreme | 0 | - | 4.90 | 45,644 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,459 |
| Biggest Cities in Germany | 0 | - | 4.95 | 268,297 |
| Biggest Cities in Europe | 0 | - | 4.75 | 490,169 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 30,497 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 39,630 |
| Biggest Cities in Sweden | 0 | - | 4.84 | 37,881 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 79,532 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 137,560 |
| Biggest City by Island | 0 | - | 4.57 | 46,137 |
| Biggest Cities in History | 0 | - | 4.50 | 81,945 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 68,592 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 40,665 |
| Largest Nordic Cities on a Map | 0 | - | 4.82 | 30,880 |
| Biggest World Cities in 1850 | 0 | - | 4.63 | 65,192 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,706 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 114,193 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 108,462 |
| Biggest Cities Starting With H | 0 | - | 4.57 | 99,397 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 112,389 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 131,091 |
| Biggest Cities Starting With P | 0 | - | 4.48 | 116,470 |
| Biggest English Cities by Century | 0 | - | 4.90 | 100,596 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 69,667 |
| Biggest Mediterranean Cities | 0 | - | 4.58 | 87,313 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 37,656 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 139,948 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 111,663 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 100,759 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,690 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 61,137 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,267 |
| Biggest Coastal City by Country | 0 | - | 4.60 | 27,153 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 154,902 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,401 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,451 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,237 |
| Flags to Largest Cities | 0 | - | 4.55 | 33,051 |
| Biggest World Cities A-Z | 0 | - | 4.57 | 206,216 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,329,930 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,611 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,216 |
| Countries with Megacities | 0 | - | 4.99 | 202,089 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,592 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 100,070 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,399 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 66,000 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,371 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 78,982 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 83,243 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,983 |
| Biggest Cities Starting With B | 0 | - | 4.36 | 150,559 |
| Biggest Cities Starting With C | 0 | - | 4.08 | 98,160 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 80,077 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 116,713 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 117,984 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 120,400 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 63,362 |
| Largest World Cities With Four Letters | 0 | - | 4.38 | 43,610 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 62,107 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.50 | 63,263 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.47 | 46,854 |
| U.S. States by Second Most Populous City | 0 | - | 4.43 | 40,875 |
| Biggest "Saint" Cities - United States | 0 | - | 4.47 | 34,429 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 37,537 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 37,250 |
| Biggest Cities in Japan | 0 | - | 4.66 | 76,729 |
| Biggest Cities in Russia | 0 | - | 4.49 | 77,675 |
| Biggest Cities in France | 0 | - | 4.71 | 203,451 |
| Biggest Cities in Spain | 0 | - | 4.55 | 156,455 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 51,238 |
| Biggest Cities in Poland | 0 | - | 4.57 | 49,126 |
| Biggest Cities in the UK | 0 | - | 4.46 | 95,258 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 33,705 |
| Biggest Cities in China | 0 | - | 4.55 | 141,947 |
| Cities of Ireland | 0 | - | 4.49 | 46,475 |
| Biggest Cities in Canada | 0 | - | 4.66 | 122,540 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 44,154 |
| Biggest Cities in India | 0 | - | 4.71 | 63,356 |
| Biggest Cities in Italy | 0 | - | 4.69 | 221,656 |
| Biggest U.S. Cities A-Z | 0 | - | 4.71 | 132,838 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 118,194 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 67,525 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 248,527 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,674 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 104,313 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 72,368 |
| Countries by Population Range - Tile Select | 0 | - | 4.84 | 51,398 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,598 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,895 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.70 | 75,265 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,369 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.78 | 42,683 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 49,230 |
| Biggest Cities in Mexico | 0 | - | 4.51 | 35,007 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 67,002 |
| All Cities in India with Population of 1 Million | 0 | - | 4.80 | 41,865 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.40 | 89,586 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.39 | 75,527 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.30 | 83,943 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.08 | 89,570 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 71,277 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.22 | 66,887 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.23 | 61,162 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 68,481 |
| Countries of Europe by Population | 0 | - | 4.98 | 131,582 |
| Most Populous Countries by Year | 0 | - | 4.81 | 95,921 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 79,414 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 98,496 |
| Countries with the Most People Bordering Them | 0 | - | 4.97 | 84,903 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 95,169 |
| Densest Countries Bordering Each Other | 0 | - | 4.94 | 73,072 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 87,029 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,944 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 29,253 |
| Cities in Squares on a Map - North America | 0 | - | 4.32 | 19,760 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.48 | 21,229 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 23,008 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 32,565 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 207,955 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 111,000 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 69,403 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 77,057 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 54,294 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 67,689 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 88,261 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 154,815 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 148,471 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 209,731 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 164,304 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 160,669 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 82,480 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.92 | 90,795 |
| Most Populous Country by First Two Letters | 0 | - | 4.71 | 67,706 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 148,098 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.89 | 51,454 |
| Demographics Multiple Choice | 0 | - | 4.66 | 40,229 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 65,669 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.88 | 15,850 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.79 | 65,647 |
| Largest Cities in Alexander's Empire | 0 | - | 4.56 | 38,818 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.38 | 37,957 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.25 | 95,459 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 53,004 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.36 | 30,376 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,679 |
| Cities on Interstate 90 on a Map | 0 | - | 4.44 | 29,304 |
