| U.S. Cabinet Departments | 0 | - | 4.86 | 73,082 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,715 |
| US States Quiz | 0 | - | 5.00 | 16,986,057 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,432 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,336 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,470 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 246,279 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,688 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,516 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,799 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,427 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,179 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 335,169 |
| Pixelated United States Map | 0 | - | 4.88 | 94,769 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,474 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,390 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,006 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,212 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,231 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,282 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,300 |
| U.S. States By Population | 0 | - | 4.92 | 154,092 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,165 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,854 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,821 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,518 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,060 |
| US States with an Empty Map | 0 | - | 5.00 | 628,288 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,124 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,375 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,145 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,582 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,234 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,410 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,998 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,995 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,113 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,443 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,774 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,134 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,793 |
| States of Mexico | 0 | - | 4.96 | 178,073 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,564 |
| Top U.S. Universities | 0 | - | 4.15 | 145,764 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 52,959 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,865 |
| U.S. States by Governor | 0 | - | 4.43 | 18,111 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,764 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,772 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,783 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,671 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,751 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,983 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,428 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.74 | 64,016 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,812 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 94,759 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,803 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,721 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,670 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,270 |
| United States Country Quiz | 0 | - | 4.43 | 102,148 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,051 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,466 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,210 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,599 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,081 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,189 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,878 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 53,299 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 749,504 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,923 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,389 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,435 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,102 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,530 |
| New England States | 0 | - | 4.51 | 59,891 |
| U.S. States by Land Area | 0 | - | 4.55 | 53,035 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,113 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,122 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,269 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,129 |
| U.S. States by Borders | 0 | - | 4.62 | 35,464 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,456 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,179 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,673 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,322 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,436 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.46 | 119,318 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,891 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,950 |
| United States Map Quiz | 0 | - | 4.98 | 4,170,496 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,078 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,084 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 53,124 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.64 | 66,062 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,617 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,855 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,929 |
| Longest U.S. State Borders | 0 | - | 4.69 | 40,102 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,972 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,367 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,874 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,566 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,833 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 114,191 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,363 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 18,110 |
| Flags of North and South America | 0 | - | 4.99 | 376,626 |
| Belize Country Quiz | 0 | - | 4.85 | 21,077 |
| Largest United States Airlines | 0 | - | 4.39 | 55,147 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,958 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,359 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,664 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,212 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,561 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.22 | 10,903 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,907 |
| Events in U.S. History | 0 | - | 4.41 | 28,816 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,472 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,504 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,481 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 50,187 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 54,386 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,605 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,505 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,669 |
| U.S. Geography by Letter - R | 0 | - | 4.22 | 36,836 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,586 |
| American Legal Vocabulary | 0 | - | 4.40 | 34,011 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,713 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,283 |
| American Founding Fathers | 0 | - | 4.42 | 23,273 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,697 |
| California Groups of Things | 0 | - | 4.26 | 45,751 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,318 |
| New York Groups of Things | 0 | - | 4.39 | 71,972 |
| People on Money - United States | 0 | - | 4.31 | 63,430 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,580 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 75,049 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,561 |
| Flyover States | 0 | - | 4.53 | 29,587 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,252 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,388 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.43 | 32,561 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,373 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 49,273 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,947 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,665 |
| Famous Canadians by Picture | 0 | - | 4.39 | 49,499 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,799 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 77,010 |
| The Only American Country ... | 0 | - | 4.92 | 122,175 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,614 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,857 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,770 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,913 |
| Names of Generations | 0 | - | 4.09 | 45,485 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,944 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,073 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,235 |
| Regions of U.S. States | 0 | - | 4.37 | 44,163 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,418 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,629 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,928 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,363 |
| Movies by State | 0 | - | 4.27 | 40,605 |
| U.S. States with the Fewest Traffic Fatalities | 0 | - | 4.20 | 21,193 |
| U.S. States with the Most Traffic Fatalities | 0 | - | 4.10 | 19,207 |
| Canada Country Quiz | 0 | - | 4.55 | 133,009 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,580 |
| Canada A-Z | 0 | - | 4.73 | 32,958 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,719 |
| Monarchies of Europe | 0 | - | 4.90 | 98,801 |
| Monarchies of Asia | 0 | - | 4.97 | 71,476 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,256 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,727 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,744 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,547 |
| States of Brazil | 0 | - | 4.97 | 89,608 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,233 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,511 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 138,985 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,860 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 82,719 |
| Richest Metro Areas in the U.S. | 0 | - | 4.42 | 44,087 |
| Politicians with Other Careers | 0 | - | 3.98 | 15,050 |
| Main Parts of the U.S. Budget | 0 | - | 3.45 | 8,738 |
| Geography of California | 0 | - | 4.26 | 10,620 |
| California Pro Sport Teams | 0 | - | 4.19 | 22,713 |
| Chicago City Trivia | 0 | - | 4.31 | 31,518 |
| New York Pro Sport Teams | 0 | - | 4.32 | 25,959 |
| Texas Pro Sport Teams | 0 | - | 4.19 | 16,853 |
| History of Pennsylvania | 0 | - | 4.16 | 7,163 |
| History of Virginia | 0 | - | 4.33 | 11,640 |
| Washington State by Picture | 0 | - | 4.26 | 7,756 |
| Events by U.S. State #1 | 0 | - | 4.43 | 22,964 |
| Most Valuable Crops by U.S. State | 0 | - | 4.40 | 39,209 |
| U.S. States with the Most Venomous Snake Species | 0 | - | 4.48 | 26,483 |
| U.S. States with the Most Endangered Species | 0 | - | 4.50 | 14,394 |
