| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,233 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,444 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,698 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,677,254 |
| US States with an Empty Map | 0 | - | 5.00 | 618,611 |
| Random U.S. States on a Map | 0 | - | 4.96 | 621,221 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,145 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,350 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 341,913 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,411 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 124,173 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,319 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 103,153 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,714 |
| US States Quiz | 0 | - | 5.00 | 16,694,732 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,662 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,214 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,853 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,469 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,361 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,618 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,871 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 172,314 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,364 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,595 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 573,063 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,499 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,177 |
| Megacities on a World Map | 0 | - | 4.98 | 250,851 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,542 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,754 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,249 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 96,987 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.48 | 63,212 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,779 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,513 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,879 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 88,171 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,051 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,303 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,875 |
| Hottest U.S. State Capitals | 0 | - | 4.77 | 29,051 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,241 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 192,502 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,065 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,809 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,849 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,667 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,891 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,693 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,595 |
| Pixelated United States Map | 0 | - | 4.89 | 93,444 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,012 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,666 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,024 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,749 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,861 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,543 |
| Biggest Cities in the United States | 0 | - | 4.93 | 966,237 |
| Biggest Cities in the World | 0 | - | 4.92 | 790,067 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,706 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,809 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,804 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,975 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 167,117 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,509 |
| Biggest Cities in California | 0 | - | 4.35 | 139,194 |
| Biggest Cities in Canada | 0 | - | 4.54 | 131,790 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,268 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,582 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,475 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 78,905 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,658 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,215 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 83,980 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,639 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 59,916 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,511 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,839 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,689 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,231 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,848 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,554 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.43 | 40,162 |
| Biggest Cities in North Carolina | 0 | - | 4.64 | 34,878 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,120 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,379 |
| Which City in Canada? | 0 | - | 4.83 | 56,645 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,664,003 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,715 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,304 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,794 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,742 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,328 |
| North America Map Quiz | 0 | - | 4.98 | 244,329 |
| Central American Countries | 0 | - | 4.98 | 155,004 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,377 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,518 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,629 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,624 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.80 | 101,758 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,461 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,840 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,285 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,935 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 93,874 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,846 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,922 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,649 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,080 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,057 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,880 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,823 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,636 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,422 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 62,911 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,652,799 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,586 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,500 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,287 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,778 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,119 |
| Biggest European Cities by Century | 0 | - | 4.98 | 142,607 |
| Biggest Cities in Texas | 0 | - | 4.28 | 118,598 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 129,935 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,812 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,608 |
| Biggest Cities in Florida | 0 | - | 4.23 | 71,782 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,361 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,106 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,542 |
| Biggest Cities in New York State | 0 | - | 4.32 | 59,405 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.45 | 72,745 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,776 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,455 |
| Biggest Cities in Ohio | 0 | - | 4.38 | 48,579 |
| Biggest Cities in Pennsylvania | 0 | - | 4.12 | 45,192 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,030 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,135 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,607 |
| Biggest Cities in Washington State | 0 | - | 4.43 | 35,934 |
| Biggest Cities in Arizona | 0 | - | 4.30 | 31,414 |
| U.S. Cities by Hispanic Population | 0 | - | 4.31 | 37,986 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,464 |
| Biggest Cities in Illinois | 0 | - | 4.36 | 26,758 |
| Biggest Cities in Wisconsin | 0 | - | 4.46 | 25,046 |
| Biggest Cities in Virginia | 0 | - | 4.22 | 25,009 |
| Biggest Cities in Massachusetts | 0 | - | 4.39 | 30,396 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 38,955 |
| Biggest Cities in Indiana | 0 | - | 4.27 | 26,833 |
| Biggest Cities in Tennessee | 0 | - | 4.26 | 20,759 |
| Biggest Cities in Alaska | 0 | - | 4.29 | 25,712 |
| Biggest Cities in Missouri | 0 | - | 4.25 | 17,282 |
| Saint Lucia Country Quiz | 0 | - | 4.65 | 17,935 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,982 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,622 |
| Europe Capital to Country | 0 | - | 4.99 | 247,509 |
| Official Cities in the UK | 0 | - | 4.89 | 280,430 |
| World Capitals by Map | 0 | - | 5.00 | 283,107 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,678 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 221,703 |
| Random European Capital to Country | 0 | - | 4.98 | 189,159 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 137,653 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,413 |
| Random European Capitals on a Map | 0 | - | 4.97 | 133,804 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,321 |
| 100 Biggest Cities and Towns in the UK | 0 | - | 4.97 | 144,863 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,253 |
| Biggest Cities in a Strip of the United States Map | 0 | - | 4.74 | 40,586 |
| U.S. State Capitals Closest to Mexico | 0 | - | 4.58 | 42,651 |
| Random Cities Near Chicago on a Map | 0 | - | 4.52 | 34,204 |
| U.S. State Capitals Closest to Canada | 0 | - | 4.63 | 33,840 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,966 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,379,769 |
| Flags of North and South America | 0 | - | 4.99 | 366,857 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,761 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,146 |
| Random European Countries on a Map | 0 | - | 4.97 | 281,911 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,595 |
| Random African Countries on a Map | 0 | - | 4.99 | 293,304 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,732 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,115 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,867 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,939 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,677 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,802 |
| Random Asian Countries on a Map | 0 | - | 4.90 | 168,722 |
| U.S. States By Population | 0 | - | 4.92 | 152,329 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,898 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 145,826 |
| States of Mexico | 0 | - | 4.95 | 173,288 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,309 |
| Random American Countries on a Map | 0 | - | 4.96 | 98,604 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,126 |
| Most Visited U.S. States by Canadians | - | - | 4.74 | 60,814 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 56,926 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,023 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,370 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,817 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,605 |
