| Biggest Cities in the World | 0 | - | 4.90 | 703,744 |
| Biggest City by Time Zone | 0 | - | 4.85 | 56,087 |
| Biggest City in Every Country | 0 | - | 4.98 | 81,598 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 174,554 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 94,413 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 99,807 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 66,934 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.84 | 73,497 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 67,036 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 43,033 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 60,967 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 47,029 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 56,844 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 109,780 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 378,715 |
| Biggest Cities in the United States | 0 | - | 4.93 | 850,061 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 338,911 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 110,273 |
| Biggest Cities by Language | 0 | - | 4.95 | 216,580 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 65,402 |
| Most Populous World Capitals | 0 | - | 4.93 | 162,523 |
| Biggest European Cities by Century | 0 | - | 4.98 | 120,636 |
| Megacities on a World Map | 0 | - | 4.98 | 223,877 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 523,653 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 60,963 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 64,794 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 92,213 |
| Biggest City in Each U.S. State | 0 | - | 4.86 | 153,803 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 156,837 |
| Biggest Cities in Asia | 0 | - | 4.94 | 98,358 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 44,498 |
| Megacities on an Empty Map | 0 | - | 4.95 | 88,882 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 43,128 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 64,543 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 68,673 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 203,534 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 122,833 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 310,243 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 100,498 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 98,318 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 43,400 |
| Biggest City by Region | 0 | - | 4.50 | 34,078 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 54,084 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,696 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 78,089 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,462 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 139,967 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 111,673 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 144,762 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 44,806 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.91 | 105,278 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 70,993 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.87 | 101,318 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.82 | 53,896 |
| Biggest Cities in Europe | 0 | - | 4.75 | 490,283 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 137,569 |
| Biggest City by Island | 0 | - | 4.57 | 46,140 |
| Biggest Cities in History | 0 | - | 4.50 | 81,952 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 68,596 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 51,701 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 93,750 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 40,667 |
| Biggest Cities in France - Extreme | 0 | - | 4.90 | 45,659 |
| Biggest World Cities in 1850 | 0 | - | 4.63 | 65,196 |
| Biggest Cities in Germany | 0 | - | 4.95 | 268,333 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 114,206 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 108,476 |
| Biggest Cities Starting With H | 0 | - | 4.57 | 99,410 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 112,405 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 131,114 |
| Biggest Cities Starting With P | 0 | - | 4.48 | 116,486 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,695 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,269 |
| Biggest Coastal City by Country | 0 | - | 4.60 | 27,156 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,404 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,451 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,240 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 30,508 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,241 |
| Countries with Megacities | 0 | - | 4.99 | 202,114 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,609 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 100,085 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,416 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 66,017 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,409 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 39,639 |
| Biggest Cities in Sweden | 0 | - | 4.84 | 37,883 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 79,565 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,330,057 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,640 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 69,671 |
| Biggest Mediterranean Cities | 0 | - | 4.58 | 87,316 |
| Largest Nordic Cities on a Map | 0 | - | 4.82 | 30,899 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 37,661 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,707 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 83,265 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,983 |
| Biggest Cities Starting With B | 0 | - | 4.36 | 150,585 |
| Biggest Cities Starting With C | 0 | - | 4.08 | 98,170 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 80,085 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 116,730 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 118,007 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 118,207 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 67,533 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 248,552 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,685 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 104,318 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 72,378 |
| Countries by Population Range - Tile Select | 0 | - | 4.84 | 51,408 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 100,766 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 61,140 |
| Biggest English Cities by Century | 0 | - | 4.90 | 100,602 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 154,923 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,371 |
| Flags to Largest Cities | 0 | - | 4.55 | 33,062 |
| Biggest World Cities A-Z | 0 | - | 4.57 | 206,244 |
| Largest World Cities With Four Letters | 0 | - | 4.38 | 43,611 |
| Most Populous Country by First Two Letters | 0 | - | 4.71 | 67,713 |
| Demographics Multiple Choice | 0 | - | 4.66 | 40,231 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 120,418 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 63,365 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.50 | 63,281 |
| U.S. States by Second Most Populous City | 0 | - | 4.43 | 40,876 |
| Biggest "Saint" Cities - United States | 0 | - | 4.47 | 34,430 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 37,541 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 33,716 |
| Countries of Europe by Population | 0 | - | 4.98 | 131,599 |
| Most Populous Countries by Year | 0 | - | 4.81 | 95,934 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 79,422 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 98,512 |
| Countries with the Most People Bordering Them | 0 | - | 4.97 | 84,929 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 95,175 |
| Densest Countries Bordering Each Other | 0 | - | 4.94 | 73,083 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,601 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 62,109 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.47 | 46,883 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 29,255 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 37,259 |
| Cities in Squares on a Map - North America | 0 | - | 4.32 | 19,762 |
| Biggest Cities in Japan | 0 | - | 4.66 | 76,733 |
| Biggest Cities in Russia | 0 | - | 4.49 | 77,682 |
| Biggest Cities in France | 0 | - | 4.71 | 203,477 |
| Biggest Cities in Spain | 0 | - | 4.55 | 156,475 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 51,252 |
| Biggest Cities in Poland | 0 | - | 4.57 | 49,136 |
| Biggest Cities in the UK | 0 | - | 4.46 | 95,270 |
| Biggest Cities in China | 0 | - | 4.55 | 141,979 |
| Cities of Ireland | 0 | - | 4.49 | 46,517 |
| Biggest Cities in Canada | 0 | - | 4.66 | 122,546 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 44,158 |
| Biggest Cities in India | 0 | - | 4.71 | 63,364 |
| Biggest Cities in Italy | 0 | - | 4.69 | 221,681 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.40 | 89,595 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.39 | 75,537 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.30 | 83,956 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.08 | 89,579 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 71,284 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.22 | 66,894 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.23 | 61,169 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 68,483 |
| Biggest U.S. Cities A-Z | 0 | - | 4.71 | 132,840 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 207,964 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 111,010 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 69,407 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 77,066 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 54,295 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 67,693 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 88,265 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 154,824 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 148,484 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 78,991 |
| Boundary Waters | 0 | - | 4.93 | 82,075 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 76,524 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 52,651 |
| Most Populous Islands | 0 | - | 4.71 | 114,393 |
| Islands by Largest City #1 | 0 | - | 4.48 | 82,556 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 209,753 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 164,328 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 160,680 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 82,497 |
| Countries by Population Decrease | 0 | - | 4.43 | 47,037 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.92 | 90,806 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 148,110 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 50,471 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 65,674 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.88 | 15,859 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,945 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,899 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.70 | 75,269 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.36 | 30,381 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.78 | 42,685 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.48 | 21,230 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 49,240 |
| Biggest Cities in Mexico | 0 | - | 4.51 | 35,012 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 67,024 |
| All Cities in India with Population of 1 Million | 0 | - | 4.80 | 41,870 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 23,013 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 163,630 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 32,569 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,820,094 |
