| Biggest Cities in the U.S. - Extreme | 0 | - | 4.94 | 140,984 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 70,227 |
| 500 Biggest US Cities | 0 | - | 4.87 | 99,599 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 92,976 |
| Biggest Cities in Asia | 0 | - | 4.94 | 97,009 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 61,829 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 43,989 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.50 | 40,939 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 42,427 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,619 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.70 | 74,899 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.90 | 29,738 |
| Biggest Cities in the World | 0 | - | 4.90 | 695,000 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 201,776 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 121,582 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 307,211 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 98,906 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 44,327 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 103,080 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 375,134 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.82 | 53,147 |
| Biggest Cities in the United States | 0 | - | 4.93 | 841,787 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 336,824 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 117,563 |
| Biggest City by Time Zone | 0 | - | 4.84 | 55,218 |
| Biggest City in Every Country | 0 | - | 4.98 | 80,138 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 172,103 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 93,193 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 97,903 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 65,928 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.84 | 72,537 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.38 | 37,591 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.23 | 93,399 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 66,151 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 42,732 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 60,302 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,709 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 56,008 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 108,109 |
| Cities on Interstate 90 on a Map | 0 | - | 4.43 | 28,749 |
| Biggest Cities in Canada | 0 | - | 4.66 | 121,580 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,538,681 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 51,249 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 518,811 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 44,717 |
| Biggest Cities in Mexico | 0 | - | 4.50 | 34,576 |
| Biggest Cities in Germany | 0 | - | 4.95 | 265,832 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 109,612 |
| Biggest Cities by Language | 0 | - | 4.95 | 215,090 |
| Biggest Cities in Europe | 0 | - | 4.76 | 469,818 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 65,134 |
| Most Populous World Capitals | 0 | - | 4.93 | 149,581 |
| Biggest European Cities by Century | 0 | - | 4.98 | 119,736 |
| Megacities on a World Map | 0 | - | 4.98 | 222,297 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.50 | 62,250 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 60,386 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 64,080 |
| U.S. States by Second Most Populous City | 0 | - | 4.43 | 40,607 |
| Biggest "Saint" Cities - United States | 0 | - | 4.47 | 34,206 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.42 | 36,977 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 85,569 |
| Biggest Cities in Sweden | 0 | - | 4.84 | 37,598 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 77,849 |
| Biggest City in Each U.S. State | 0 | - | 4.83 | 152,255 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 155,780 |
| Megacities on an Empty Map | 0 | - | 4.95 | 88,233 |
| Canadian Metro Areas over 100,000 People | 0 | - | 4.46 | 28,724 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,465 |
| Hawaiian Islands | 0 | - | 4.85 | 38,678 |
| Biggest English Cities by Century | 0 | - | 4.90 | 100,065 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 64,132 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 68,267 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.78 | 69,228 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 87,053 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 37,242 |
| US States and State Capitals Quiz | 0 | - | 4.99 | 122,344 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 138,620 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 110,669 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 60,752 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,847 |
| Saint Lucia Country Quiz | 0 | - | 4.66 | 16,453 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 32,213 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,320,376 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 351,431 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 127,624 |
| Countries with Megacities | 0 | - | 4.99 | 199,810 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,412 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,004 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 97,008 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 64,974 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 250,602 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.97 | 78,491 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 52,824 |
| Washington Cities Map Quiz | 0 | - | 4.47 | 23,241 |
| Word Scramble - U.S. States | 0 | - | 4.96 | 461,974 |
| Six Flags Over Texas | 0 | - | 4.84 | 59,097 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 98,072 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 119,792 |
| Biggest Cities by Trait #1 | 0 | - | 4.45 | 43,225 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 63,132 |
| Biggest City by Region | 0 | - | 4.50 | 33,879 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 53,720 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,521 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 77,355 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 36,660 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,228 |
| Biggest Cities in Japan | 0 | - | 4.65 | 76,096 |
| Biggest Cities in Russia | 0 | - | 4.49 | 77,268 |
| Biggest Cities in France | 0 | - | 4.76 | 201,352 |
| Biggest Cities in Spain | 0 | - | 4.55 | 155,105 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 50,759 |
| Biggest Cities in Poland | 0 | - | 4.57 | 48,604 |
| Biggest Cities in Colombia Quiz | 0 | - | 4.41 | 13,232 |
| Biggest Cities in the UK | 0 | - | 4.46 | 94,382 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 33,320 |
| Biggest Cities in China | 0 | - | 4.55 | 140,254 |
| Cities of Ireland | 0 | - | 4.43 | 40,043 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,861 |
| Biggest Cities in India | 0 | - | 4.71 | 62,861 |
| Biggest Cities in Italy | 0 | - | 4.66 | 219,407 |
| Countries Closest to Alaska | 0 | - | 4.92 | 99,824 |
| Countries Closest to Maine | 0 | - | 4.85 | 59,511 |
| California Cities Map Quiz | 0 | - | 4.49 | 82,629 |
| Florida Cities Map Quiz | 0 | - | 4.49 | 57,720 |
| New York Cities Map Quiz | 0 | - | 4.54 | 39,878 |
| Great Plains States and Provinces on a Map | 0 | - | 4.94 | 38,639 |
| Rivers of the United States | 0 | - | 4.92 | 57,540 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 66,789 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 246,826 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 109,831 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 103,868 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 71,377 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 50,955 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 136,725 |
| Biggest City by Island | 0 | - | 4.57 | 45,954 |
| Biggest Cities in History | 0 | - | 4.50 | 81,260 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 68,264 |
| U.S. Cities by Hispanic Population | 0 | - | 4.27 | 24,645 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 40,368 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.78 | 42,574 |
| Biggest World Cities in 1850 | 0 | - | 4.63 | 64,858 |
| The Most Populous U.S. City by Category | 0 | - | 4.36 | 14,803 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.74 | 65,656 |
| All Cities in China with Population of 1 Million | 0 | - | 4.79 | 39,087 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 41,397 |
| Biggest Cities in Washington State | 0 | - | 4.44 | 29,989 |
| Biggest Cities in California | 0 | - | 4.35 | 131,111 |
| Biggest Cities in Florida | 0 | - | 4.20 | 67,711 |
| Biggest Cities in New York State | 0 | - | 4.29 | 56,110 |
| Biggest Cities in Pennsylvania | 0 | - | 4.14 | 42,903 |
| Biggest Cities in Ohio | 0 | - | 4.37 | 45,955 |
| Biggest Cities in Texas | 0 | - | 4.26 | 111,902 |
| Biggest Cities in Wisconsin | 0 | - | 4.45 | 23,523 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 113,250 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 107,540 |
| Biggest Cities Starting With H | 0 | - | 4.55 | 98,517 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 111,410 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 129,837 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 115,565 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 75,484 |
| Which City in Canada? | 0 | - | 4.89 | 45,601 |
| Countries that Visit Florida the Most | 0 | - | 4.58 | 49,957 |
| Countries Closest to United States A-Z | 0 | - | 4.84 | 108,060 |
| Cartoon Versions of U.S. States | 0 | - | 4.81 | 52,658 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.82 | 91,289 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 52,294 |
| U.S. State Flags | 0 | - | 4.88 | 138,643 |
| Washington Counties | 0 | - | 4.74 | 21,766 |
| U.S. States that Border Canada | 0 | - | 4.90 | 166,391 |
| U.S. States that Border Tennessee | 0 | - | 4.84 | 57,975 |
| State Quiz - Florida | 0 | - | 4.44 | 56,253 |
| State Quiz - Texas | 0 | - | 4.44 | 56,700 |
| State Quiz - New York | 0 | - | 4.47 | 37,043 |
| State Quiz - California | 0 | - | 4.65 | 57,139 |
| Countries of Europe by Population | 0 | - | 4.98 | 129,296 |
| Most Populous Countries by Year | 0 | - | 4.81 | 94,766 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 79,040 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 97,533 |
| Countries with the Most People Bordering Them | 0 | - | 4.97 | 81,798 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 94,286 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 71,811 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 86,406 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,453 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,103 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,805 |
| Biggest Coastal City by Country | 0 | - | 4.60 | 27,083 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,268 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,342 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,410 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,062 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.48 | 20,950 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 22,894 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.95 | 29,699 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 206,528 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 110,277 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 69,030 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 76,566 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,973 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 67,293 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 87,595 |
