| Biggest Cities in the World | 0 | - | 4.90 | 702,409 |
| Biggest City by Time Zone | 0 | - | 4.85 | 55,952 |
| Biggest City in Every Country | 0 | - | 4.98 | 81,381 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 174,180 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 94,215 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 99,582 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 66,786 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.84 | 73,359 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 66,904 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 42,992 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 60,843 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,978 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 56,705 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 109,469 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 378,148 |
| Biggest Cities in the United States | 0 | - | 4.93 | 848,720 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 338,552 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 110,181 |
| Biggest Cities by Language | 0 | - | 4.95 | 216,352 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 65,365 |
| Most Populous World Capitals | 0 | - | 4.94 | 162,204 |
| Biggest European Cities by Century | 0 | - | 4.98 | 120,334 |
| Megacities on a World Map | 0 | - | 4.98 | 223,676 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 522,737 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 60,876 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 64,680 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 91,822 |
| Biggest City in Each U.S. State | 0 | - | 4.86 | 153,327 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 156,694 |
| Biggest Cities in Asia | 0 | - | 4.94 | 98,187 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 44,432 |
| Megacities on an Empty Map | 0 | - | 4.95 | 88,767 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 43,024 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 64,468 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 68,574 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 203,219 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 122,666 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 309,724 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 100,194 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 98,280 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 43,375 |
| Biggest City by Region | 0 | - | 4.50 | 34,054 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 54,019 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,665 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 77,980 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,419 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 139,607 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 111,542 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 144,454 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 44,741 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 105,065 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 70,881 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.87 | 101,080 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.82 | 53,761 |
| Biggest Cities in Europe | 0 | - | 4.75 | 488,818 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 137,463 |
| Biggest City by Island | 0 | - | 4.57 | 46,109 |
| Biggest Cities in History | 0 | - | 4.50 | 81,846 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 68,538 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 51,598 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 93,605 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 40,615 |
| Biggest Cities in France - Extreme | 0 | - | 4.90 | 45,461 |
| Biggest World Cities in 1850 | 0 | - | 4.63 | 65,130 |
| Biggest Cities in Germany | 0 | - | 4.95 | 267,863 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 114,043 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 108,355 |
| Biggest Cities Starting With H | 0 | - | 4.57 | 99,283 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 112,233 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 130,902 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 116,311 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,658 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,239 |
| Biggest Coastal City by Country | 0 | - | 4.60 | 27,145 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,379 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,441 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,218 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 30,404 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,002 |
| Countries with Megacities | 0 | - | 4.99 | 201,810 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,335 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,950 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,221 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,855 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 252,971 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 39,561 |
| Biggest Cities in Sweden | 0 | - | 4.84 | 37,815 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 79,242 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,328,651 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,331 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 69,616 |
| Biggest Mediterranean Cities | 0 | - | 4.58 | 87,260 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 37,595 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,674 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 83,075 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,969 |
| Biggest Cities Starting With B | 0 | - | 4.36 | 150,387 |
| Biggest Cities Starting With C | 0 | - | 4.08 | 98,070 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 79,987 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 116,368 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 117,829 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 118,090 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 67,424 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 248,321 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,558 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 104,258 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 72,231 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 51,332 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 100,612 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 61,089 |
| Biggest English Cities by Century | 0 | - | 4.90 | 100,520 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 154,734 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,357 |
| Flags to Largest Cities | 0 | - | 4.55 | 32,981 |
| Biggest World Cities A-Z | 0 | - | 4.57 | 205,929 |
| Largest World Cities With Four Letters | 0 | - | 4.38 | 43,584 |
| Most Populous Country by First Two Letters | 0 | - | 4.71 | 67,654 |
| Demographics Multiple Choice | 0 | - | 4.66 | 40,203 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 120,318 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 63,330 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.50 | 63,141 |
| U.S. States by Second Most Populous City | 0 | - | 4.43 | 40,839 |
| Biggest "Saint" Cities - United States | 0 | - | 4.47 | 34,392 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 37,492 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 33,641 |
| Countries of Europe by Population | 0 | - | 4.98 | 131,222 |
| Most Populous Countries by Year | 0 | - | 4.81 | 95,779 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 79,368 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 98,387 |
| Countries with the Most People Bordering Them | 0 | - | 4.97 | 84,624 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 95,068 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 72,946 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,573 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 62,060 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.47 | 45,736 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 29,208 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 37,148 |
| Cities in Squares on a Map - North America | 0 | - | 4.32 | 19,722 |
| Biggest Cities in Japan | 0 | - | 4.66 | 76,662 |
| Biggest Cities in Russia | 0 | - | 4.49 | 77,606 |
| Biggest Cities in France | 0 | - | 4.71 | 202,922 |
| Biggest Cities in Spain | 0 | - | 4.55 | 156,223 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 51,163 |
| Biggest Cities in Poland | 0 | - | 4.57 | 49,053 |
| Biggest Cities in the UK | 0 | - | 4.46 | 95,131 |
| Biggest Cities in China | 0 | - | 4.55 | 141,605 |
| Cities of Ireland | 0 | - | 4.43 | 40,317 |
| Biggest Cities in Canada | 0 | - | 4.66 | 122,355 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 44,115 |
| Biggest Cities in India | 0 | - | 4.71 | 63,270 |
| Biggest Cities in Italy | 0 | - | 4.66 | 221,319 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.40 | 89,452 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.39 | 75,409 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.30 | 83,822 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.08 | 89,459 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 71,191 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.22 | 66,790 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.23 | 61,111 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 68,432 |
| Biggest U.S. Cities A-Z | 0 | - | 4.71 | 132,745 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 207,767 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 110,907 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 69,350 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 76,983 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 54,242 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 67,633 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 88,184 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 154,669 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 148,332 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 78,899 |
| Boundary Waters | 0 | - | 4.93 | 82,013 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 76,379 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 52,555 |
| Most Populous Islands | 0 | - | 4.71 | 114,269 |
| Islands by Largest City #1 | 0 | - | 4.48 | 82,540 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 209,448 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 164,052 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 160,460 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 82,341 |
| Countries by Population Decrease | 0 | - | 4.43 | 46,994 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.92 | 90,697 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 147,974 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 50,394 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 65,597 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.87 | 15,749 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,917 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,858 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.70 | 75,207 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.36 | 30,338 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.78 | 42,668 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.48 | 21,189 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 49,178 |
| Biggest Cities in Mexico | 0 | - | 4.50 | 34,929 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.75 | 66,619 |
| All Cities in India with Population of 1 Million | 0 | - | 4.80 | 41,753 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 22,989 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 163,520 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 32,513 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,755,841 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.83 | 30,782 |
