| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 142,349 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 70,343 |
| 500 Biggest US Cities | 0 | - | 4.88 | 99,776 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 93,061 |
| Biggest Cities in Asia | 0 | - | 4.94 | 97,120 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 61,845 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 44,061 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.50 | 41,038 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 42,509 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,638 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.70 | 74,940 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 29,849 |
| Biggest Cities in the World | 0 | - | 4.90 | 695,814 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 201,911 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 121,730 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 307,469 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 99,075 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 44,403 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 103,847 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 375,482 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.82 | 53,236 |
| Biggest Cities in the United States | 0 | - | 4.93 | 842,645 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 337,022 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 117,612 |
| Biggest City by Time Zone | 0 | - | 4.84 | 55,312 |
| Biggest City in Every Country | 0 | - | 4.98 | 80,243 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 172,335 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 93,277 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 98,362 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 66,035 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.84 | 72,634 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.38 | 37,628 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.23 | 93,597 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 66,240 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 42,762 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 60,368 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,734 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 56,077 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 108,301 |
| Cities on Interstate 90 on a Map | 0 | - | 4.43 | 28,806 |
| Biggest Cities in Canada | 0 | - | 4.66 | 121,652 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,539,665 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 51,290 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 519,230 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 44,783 |
| Biggest Cities in Mexico | 0 | - | 4.50 | 34,614 |
| Biggest Cities in Germany | 0 | - | 4.95 | 266,076 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 109,675 |
| Biggest Cities by Language | 0 | - | 4.95 | 215,455 |
| Biggest Cities in Europe | 0 | - | 4.76 | 470,280 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 65,158 |
| Most Populous World Capitals | 0 | - | 4.93 | 149,679 |
| Biggest European Cities by Century | 0 | - | 4.98 | 119,805 |
| Megacities on a World Map | 0 | - | 4.98 | 222,648 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.50 | 62,358 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 60,432 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 64,134 |
| U.S. States by Second Most Populous City | 0 | - | 4.43 | 40,640 |
| Biggest "Saint" Cities - United States | 0 | - | 4.47 | 34,229 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.42 | 37,069 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 85,668 |
| Biggest Cities in Sweden | 0 | - | 4.84 | 37,612 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 78,005 |
| Biggest City in Each U.S. State | 0 | - | 4.83 | 152,391 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 155,846 |
| Megacities on an Empty Map | 0 | - | 4.95 | 88,279 |
| Canadian Metro Areas over 100,000 People | 0 | - | 4.46 | 28,747 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,490 |
| Hawaiian Islands | 0 | - | 4.85 | 38,690 |
| Biggest English Cities by Century | 0 | - | 4.90 | 100,142 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 64,174 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 68,294 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.78 | 69,276 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 87,071 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 37,283 |
| US States and State Capitals Quiz | 0 | - | 4.99 | 122,568 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 138,691 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 110,751 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 60,786 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,866 |
| Saint Lucia Country Quiz | 0 | - | 4.66 | 16,459 |
| Biggest Cities in North Carolina | 0 | - | 4.65 | 32,302 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,321,312 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 351,641 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 127,756 |
| Countries with Megacities | 0 | - | 4.99 | 200,032 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,587 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,076 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 97,133 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 65,061 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 250,817 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.97 | 78,536 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 52,839 |
| Word Scramble - U.S. States | 0 | - | 4.96 | 462,168 |
| Six Flags Over Texas | 0 | - | 4.84 | 59,138 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 98,094 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 119,847 |
| Biggest Cities by Trait #1 | 0 | - | 4.45 | 43,234 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 63,158 |
| Biggest City by Region | 0 | - | 4.50 | 33,912 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 53,751 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,542 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 77,430 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 36,717 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,253 |
| Biggest Cities in Japan | 0 | - | 4.65 | 76,139 |
| Biggest Cities in Russia | 0 | - | 4.49 | 77,303 |
| Biggest Cities in France | 0 | - | 4.76 | 201,521 |
| Biggest Cities in Spain | 0 | - | 4.55 | 155,244 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 50,804 |
| Biggest Cities in Poland | 0 | - | 4.57 | 48,633 |
| Biggest Cities in Colombia Quiz | 0 | - | 4.41 | 13,246 |
| Biggest Cities in the UK | 0 | - | 4.46 | 94,469 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 33,357 |
| Biggest Cities in China | 0 | - | 4.57 | 140,398 |
| Cities of Ireland | 0 | - | 4.43 | 40,068 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,892 |
| Biggest Cities in India | 0 | - | 4.71 | 62,907 |
| Biggest Cities in Italy | 0 | - | 4.66 | 219,601 |
| Countries Closest to Alaska | 0 | - | 4.92 | 99,888 |
| Countries Closest to Maine | 0 | - | 4.85 | 59,553 |
| California Cities Map Quiz | 0 | - | 4.49 | 82,663 |
| Florida Cities Map Quiz | 0 | - | 4.49 | 57,739 |
| New York Cities Map Quiz | 0 | - | 4.54 | 39,892 |
| Great Plains States and Provinces on a Map | 0 | - | 4.94 | 38,698 |
| Rivers of the United States | 0 | - | 4.92 | 57,594 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 66,874 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 246,979 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 109,903 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 103,918 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 71,503 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 50,993 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 136,780 |
| Biggest City by Island | 0 | - | 4.57 | 45,972 |
| Biggest Cities in History | 0 | - | 4.50 | 81,315 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 68,294 |
| U.S. Cities by Hispanic Population | 0 | - | 4.27 | 24,653 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 40,386 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.78 | 42,587 |
| Biggest World Cities in 1850 | 0 | - | 4.63 | 64,889 |
| The Most Populous U.S. City by Category | 0 | - | 4.31 | 19,415 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.75 | 65,758 |
| All Cities in China with Population of 1 Million | 0 | - | 4.79 | 39,152 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 41,429 |
| Biggest Cities in Washington State | 0 | - | 4.44 | 30,089 |
| Biggest Cities in California | 0 | - | 4.35 | 131,302 |
| Biggest Cities in Florida | 0 | - | 4.20 | 67,858 |
| Biggest Cities in New York State | 0 | - | 4.29 | 56,218 |
| Biggest Cities in Pennsylvania | 0 | - | 4.14 | 42,990 |
| Biggest Cities in Ohio | 0 | - | 4.37 | 46,052 |
| Biggest Cities in Texas | 0 | - | 4.26 | 112,033 |
| Biggest Cities in Wisconsin | 0 | - | 4.45 | 23,589 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 113,317 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 107,591 |
| Biggest Cities Starting With H | 0 | - | 4.55 | 98,584 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 111,490 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 129,936 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 115,627 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 75,553 |
| Which City in Canada? | 0 | - | 4.89 | 45,663 |
| Countries that Visit Florida the Most | 0 | - | 4.58 | 49,990 |
| Countries Closest to United States A-Z | 0 | - | 4.84 | 108,119 |
| Cartoon Versions of U.S. States | 0 | - | 4.82 | 52,730 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.82 | 91,323 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 52,311 |
| U.S. State Flags | 0 | - | 4.88 | 138,784 |
| U.S. States that Border Canada | 0 | - | 4.90 | 166,460 |
| U.S. States that Border Tennessee | 0 | - | 4.84 | 57,986 |
| State Quiz - Florida | 0 | - | 4.44 | 56,292 |
| State Quiz - Texas | 0 | - | 4.44 | 56,742 |
| State Quiz - New York | 0 | - | 4.47 | 37,080 |
| State Quiz - California | 0 | - | 4.65 | 57,183 |
| Countries of Europe by Population | 0 | - | 4.98 | 129,514 |
| Most Populous Countries by Year | 0 | - | 4.81 | 94,851 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 79,071 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 97,620 |
| Countries with the Most People Bordering Them | 0 | - | 4.97 | 82,349 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 94,371 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 71,948 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 86,449 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,478 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,116 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,813 |
| Biggest Coastal City by Country | 0 | - | 4.60 | 27,089 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,283 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,355 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,422 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,081 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.48 | 20,972 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 22,899 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.95 | 29,789 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 206,651 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 110,331 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 69,065 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 76,620 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,998 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 67,331 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 87,648 |
| Random U.S. State Capitals on a Map | 0 | - | 4.93 | 92,245 |
| Countries with the Highest Population Density | 0 | - | 4.93 | 144,869 |
