| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 114,846 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,694,102 |
| US States and State Capitals | 0 | - | 4.99 | 163,808 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 159,661 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.90 | 83,444 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,132 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 117,626 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 60,348 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 79,396 |
| Biggest Cities in Washington State | 0 | - | 4.44 | 36,317 |
| Biggest Cities in North Carolina | 0 | - | 4.64 | 35,154 |
| Biggest Cities in Asia | 0 | - | 4.95 | 117,500 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,260 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 347,178 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,259 |
| Which City in Canada? | 0 | - | 4.83 | 57,187 |
| Hawaiian Islands | 0 | - | 4.83 | 42,804 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,001 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,221 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,868 |
| All 100k+ Cities in Europe on a Map | 0 | - | 4.99 | 102,016 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 39,445 |
| Biggest Cities in California | 0 | - | 4.35 | 140,116 |
| Biggest Cities in Florida | 0 | - | 4.25 | 72,242 |
| Biggest Cities in New York State | 0 | - | 4.32 | 59,787 |
| Biggest Cities in Pennsylvania | 0 | - | 4.13 | 45,452 |
| Biggest Cities in Colorado | 0 | - | 4.05 | 32,317 |
| Biggest Cities in Arizona | 0 | - | 4.30 | 31,730 |
| Biggest Cities in Ohio | 0 | - | 4.38 | 48,866 |
| Biggest Cities in Texas | 0 | - | 4.29 | 119,476 |
| Biggest Cities in Wisconsin | 0 | - | 4.46 | 25,221 |
| World Capitals Quiz | 0 | - | 5.00 | 5,088,458 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 104,297 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,649 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,836 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,600 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,592,707 |
| Biggest Cities in the World | 0 | - | 4.91 | 802,101 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,342 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 126,722 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 90,969 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 44,074 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,914 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,457 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,076 |
| Most Populous U.S. Cities as a Percent of Their State | 0 | - | 4.78 | 55,288 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,269 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 96,715 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,314 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,669 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,315 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 99,349 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 47,711 |
| World Capitals by Proximity | 0 | - | 4.90 | 332,485 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 508,273 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,139 |
| Biggest Cities in Europe | 0 | - | 4.73 | 547,607 |
| Biggest City by Time Zone | 0 | - | 4.88 | 68,470 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,532 |
| Biggest City in Every Country | 0 | - | 4.98 | 101,313 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.46 | 73,224 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 226,279 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 110,930 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 146,580 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,334 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,905 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,196 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,940 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,648 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,504 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,290 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 70,388 |
| Ten Southernmost Megacities | 0 | - | 4.87 | 64,916 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 68,024 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 131,437 |
| Cities on Interstate 90 on a Map | 0 | - | 4.45 | 32,276 |
| Biggest Cities in the United States | 0 | - | 4.94 | 982,188 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,024 |
| Biggest Cities in Brazil | 0 | - | 4.57 | 53,261 |
| Biggest Cities in New Jersey | 0 | - | 4.14 | 29,004 |
| Biggest Cities in Virginia | 0 | - | 4.22 | 25,224 |
| Biggest Cities in Oregon | 0 | - | 4.11 | 20,818 |
| Biggest Cities in Alaska | 0 | - | 4.29 | 25,946 |
| Biggest Cities in Illinois | 0 | - | 4.36 | 26,994 |
| Biggest Cities in Louisiana | 0 | - | 4.17 | 20,026 |
| Biggest Cities in Massachusetts | 0 | - | 4.39 | 30,658 |
| Biggest Cities in Michigan | 0 | - | 3.98 | 34,233 |
| Biggest Cities in Missouri | 0 | - | 4.25 | 17,456 |
| Biggest Cities in Tennessee | 0 | - | 4.26 | 20,945 |
| Biggest Cities in Indiana | 0 | - | 4.24 | 27,090 |
| North American Sports Cities | 0 | - | 4.83 | 172,742 |
| Summer Olympic City Bids | 0 | - | 4.94 | 42,434 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,713 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,658 |
| Name a City - European Countries | 0 | - | 4.90 | 65,773 |
| Name a Valid World City | 0 | - | 4.83 | 71,564 |
| Cities by Former Name | 0 | - | 4.83 | 91,794 |
| Africa Capitals Quiz | 0 | - | 4.99 | 740,655 |
| Asia Capitals Quiz | 0 | - | 4.98 | 695,527 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,526 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,666 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,636 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,809 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,780 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,640 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,485 |
| Countries by Capital City | 0 | - | 5.00 | 68,775 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,456 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,893 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,488 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 69,491 |
| Moved Capital Cities | 0 | - | 4.96 | 74,407 |
| World Capitals by Map | 0 | - | 5.00 | 287,857 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,555 |
| Random Capital to Country | 0 | - | 4.99 | 2,596,047 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 75,673 |
| Random Country to Capital | 0 | - | 4.98 | 923,789 |
| Capitals Starting With H | 0 | - | 4.91 | 92,801 |
| Capitals Starting With K | 0 | - | 4.88 | 83,855 |
| Capitals Starting With L | 0 | - | 4.81 | 88,317 |
| Capitals Starting With M | 0 | - | 4.93 | 108,188 |
| Capitals Starting With P | 0 | - | 4.88 | 78,429 |
| Capitals Starting With R | 0 | - | 4.87 | 82,046 |
| Capitals Starting With S | 0 | - | 4.90 | 86,031 |
| Capitals Starting With T | 0 | - | 4.84 | 76,376 |
| Capitals Starting With W | 0 | - | 4.87 | 91,433 |
| Capitals Starting With A | 0 | - | 4.97 | 128,392 |
| Capitals Starting With B | 0 | - | 4.88 | 118,806 |
| Capitals Starting With D | 0 | - | 4.93 | 96,704 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,416 |
| U.S. State Flags | 0 | - | 4.89 | 171,573 |
| Washington Counties | 0 | - | 4.78 | 27,007 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,411 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,299 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 129,193 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,146 |
| Largest City by Island | 0 | - | 4.87 | 72,139 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,238 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,325 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,859 |
| U.S. Cities by Hispanic Population | 0 | - | 4.32 | 38,429 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 75,872 |
| Megacities on a World Map | 0 | - | 4.98 | 255,667 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 579,991 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,571 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,290 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.48 | 63,496 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,620 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,391 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 67,199 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 115,435 |
| Three Biggest Cities by Time Zone With Map | 0 | - | 4.98 | 35,039 |
| Biggest City in Each U.S. State | 0 | - | 4.87 | 168,842 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,654 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 111,076 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 46,473 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,708 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 75,544 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 131,346 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 113,236 |
| Former Capitals | 0 | - | 4.88 | 71,554 |
| Europe Capital to Country | 0 | - | 4.99 | 251,142 |
| Asia Capital to Country | 0 | - | 4.96 | 126,969 |
| Capital Cities Chain | 0 | - | 4.84 | 83,041 |
| EU Capitals with No Hints | 0 | - | 4.96 | 146,374 |
| European Capitals by Map | 0 | - | 4.99 | 140,535 |
| African Capitals by Map | 0 | - | 4.99 | 138,117 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,115 |
| Coldest World Capitals | 0 | - | 4.95 | 133,729 |
| Asian Capitals by Map | 0 | - | 4.98 | 63,004 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,404 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,746 |
| European Coastal Capitals | 0 | - | 4.95 | 90,922 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,748 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,176 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 224,845 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,970 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,832 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 91,184 |
| Countries and Capitals of the World With a Map | 0 | - | 5.00 | 68,084 |
| Pennsylvania Counties | 0 | - | 4.50 | 53,089 |
| New York Counties | 0 | - | 4.65 | 50,870 |
| North Carolina Counties | 0 | - | 4.54 | 53,469 |
| Georgia Counties | 0 | - | 4.51 | 49,722 |
| Virginia Counties | 0 | - | 4.45 | 33,356 |
| West Virginia Counties | 0 | - | 4.63 | 33,895 |
| Ohio Counties | 0 | - | 4.48 | 45,977 |
| Texas Counties | 0 | - | 4.56 | 77,247 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,093 |
| Single Vowel Capitals | 0 | - | 4.81 | 14,587 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,656 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,856 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,834 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,524 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,706 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.84 | 69,128 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,784 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 47,037 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.30 | 117,734 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,838 |
