| U.S. Cabinet Departments | 0 | - | 4.86 | 72,993 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,389 |
| US States Quiz | 0 | - | 5.00 | 16,939,146 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,213 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,999 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,069 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,294 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,497 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,005 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,436 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,086 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 62,064 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 333,821 |
| Pixelated United States Map | 0 | - | 4.88 | 94,545 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,086 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,103 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,613 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,832 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,841 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,465 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,808 |
| U.S. States By Population | 0 | - | 4.92 | 153,833 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,840 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,660 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,605 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,385 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,868 |
| US States with an Empty Map | 0 | - | 5.00 | 626,672 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,986 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,283 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,833 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,019 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,962 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,035 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,666 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,558 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,683 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,151 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,717 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,464 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,066 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,507 |
| States of Mexico | 0 | - | 4.96 | 177,205 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,317 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 52,404 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,764 |
| U.S. States by Governor | 0 | - | 4.43 | 18,087 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,726 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,725 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,620 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,609 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,695 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,889 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,376 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,908 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,766 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,686 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,732 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,633 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,630 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,232 |
| United States Country Quiz | 0 | - | 4.43 | 101,853 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,992 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,412 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,496 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,734 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,103 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,766 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 53,211 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 748,522 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,557 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,075 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,023 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 59,997 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,449 |
| New England States | 0 | - | 4.51 | 59,856 |
| U.S. States by Land Area | 0 | - | 4.63 | 52,940 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,059 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 82,973 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,161 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,041 |
| U.S. States by Borders | 0 | - | 4.61 | 35,402 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,407 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,146 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,598 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,196 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,297 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 119,209 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,741 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,876 |
| United States Map Quiz | 0 | - | 4.98 | 4,165,478 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,064 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,064 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 53,027 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,937 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,556 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,265 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,880 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,998 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,922 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,309 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,852 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,541 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,806 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 114,041 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,334 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 18,063 |
| Flags of North and South America | 0 | - | 4.99 | 375,053 |
| Belize Country Quiz | 0 | - | 4.85 | 21,030 |
| Largest United States Airlines | 0 | - | 4.39 | 55,094 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,847 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,344 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,439 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,186 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,542 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.22 | 10,877 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,872 |
| Events in U.S. History | 0 | - | 4.41 | 28,743 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,366 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,387 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,350 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 50,084 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 54,242 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,537 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,395 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,561 |
| U.S. Geography by Letter - R | 0 | - | 4.22 | 36,471 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,446 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,970 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,646 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,215 |
| American Founding Fathers | 0 | - | 4.42 | 23,250 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,580 |
| California Groups of Things | 0 | - | 4.26 | 45,646 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,298 |
| New York Groups of Things | 0 | - | 4.38 | 70,277 |
| People on Money - United States | 0 | - | 4.31 | 63,390 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,537 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,949 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,550 |
| Flyover States | 0 | - | 4.52 | 29,554 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,203 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,299 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.43 | 32,531 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,213 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,551 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,591 |
| Famous Canadians by Picture | 0 | - | 4.39 | 49,444 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,368 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,913 |
| The Only American Country ... | 0 | - | 4.92 | 121,928 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,383 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,685 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,429 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,701 |
| Names of Generations | 0 | - | 4.09 | 45,289 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,579 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,064 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,099 |
| Regions of U.S. States | 0 | - | 4.37 | 44,037 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,403 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,609 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,889 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,332 |
| Movies by State | 0 | - | 4.27 | 40,582 |
| U.S. States with the Fewest Traffic Fatalities | 0 | - | 4.20 | 21,175 |
| U.S. States with the Most Traffic Fatalities | 0 | - | 4.10 | 19,180 |
| Canada Country Quiz | 0 | - | 4.54 | 132,777 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,429 |
| Canada A-Z | 0 | - | 4.73 | 32,913 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,500 |
| Monarchies of Europe | 0 | - | 4.90 | 98,482 |
| Monarchies of Asia | 0 | - | 4.97 | 71,310 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,098 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,585 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,333 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,339 |
| States of Brazil | 0 | - | 4.97 | 88,925 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,215 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,481 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 138,845 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,402 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 82,180 |
| Richest Metro Areas in the U.S. | 0 | - | 4.42 | 43,937 |
| Politicians with Other Careers | 0 | - | 3.98 | 15,031 |
| Main Parts of the U.S. Budget | 0 | - | 3.45 | 8,728 |
| Geography of California | 0 | - | 4.26 | 10,597 |
| California Pro Sport Teams | 0 | - | 4.19 | 22,701 |
| Chicago City Trivia | 0 | - | 4.31 | 31,491 |
| New York Pro Sport Teams | 0 | - | 4.32 | 25,930 |
| Texas Pro Sport Teams | 0 | - | 4.19 | 16,839 |
| History of Pennsylvania | 0 | - | 4.16 | 7,152 |
| History of Virginia | 0 | - | 4.31 | 11,617 |
| Washington State by Picture | 0 | - | 4.26 | 7,741 |
| Events by U.S. State #1 | 0 | - | 4.43 | 22,943 |
| Most Valuable Crops by U.S. State | 0 | - | 4.40 | 39,159 |
| U.S. States with the Most Venomous Snake Species | 0 | - | 4.48 | 26,463 |
| U.S. States with the Most Endangered Species | 0 | - | 4.50 | 14,383 |
| African-American Historical Figures | 0 | - | 4.18 | 17,243 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,353 |
