| U.S. Cabinet Departments | 0 | - | 4.86 | 68,132 |
| U.S. Federal Agency Acronyms | 0 | - | 4.51 | 76,688 |
| Deadliest U.S. Wars | 0 | - | 4.83 | 160,040 |
| U.S. States by Governor Quiz | 0 | - | 4.42 | 17,066 |
| U.S. Political Parties in History | 0 | - | 4.43 | 26,334 |
| U.S. Government Agencies | 0 | - | 4.42 | 17,909 |
| US States Quiz | 0 | - | 5.00 | 14,999,450 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.84 | 55,859 |
| Total United States Immigration by Country | 0 | - | 4.90 | 98,230 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 149,447 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.94 | 189,107 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 343,408 |
| Top 10 Coldest U.S. States | 0 | - | 4.92 | 102,141 |
| Top 10 Hottest U.S. States | 0 | - | 4.88 | 108,892 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 57,563 |
| The U.S. Government - How Does it Work? | 0 | - | 4.32 | 40,179 |
| Pixelated United States Map | 0 | - | 4.90 | 83,781 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 95,347 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 80,343 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 102,145 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 97,830 |
| 10 Southernmost U.S. States | 0 | - | 4.86 | 100,818 |
| U.S. States with Short Names | 0 | - | 4.87 | 132,092 |
| U.S. States that Start with M | 0 | - | 4.91 | 152,681 |
| U.S. States By Population | 0 | - | 4.90 | 131,481 |
| U.S. States that Start with N | 0 | - | 4.95 | 157,451 |
| U.S. States with Longest Names | 0 | - | 4.84 | 36,839 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 78,984 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 59,012 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 57,108 |
| US States with an Empty Map | 0 | - | 5.00 | 562,838 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 35,442 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.96 | 282,034 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 126,118 |
| Countries that Beat the United States | 0 | - | 4.92 | 148,170 |
| Senators Who Ran For President | 0 | - | 4.28 | 16,388 |
| U.S. Electoral College Landslides | 0 | - | 4.33 | 21,127 |
| Louisiana Purchase with a Map | 0 | - | 4.95 | 37,357 |
| U.S. States with the Longest International Borders | 0 | - | 4.81 | 42,450 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 91,057 |
| U.S. States with the Most Immigrants | 0 | - | 4.86 | 74,511 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 73,008 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 117,390 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 187,621 |
| Top 10 Most Native American U.S. States | 0 | - | 4.84 | 72,679 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 224,255 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.11 | 25,211 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.08 | 14,843 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.17 | 10,187 |
| Canadian Prime Ministers Quiz | 0 | - | 4.65 | 50,621 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 82,981 |
| States of Mexico | 0 | - | 4.94 | 145,173 |
| Top U.S. Universities | 0 | - | 4.11 | 114,911 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.52 | 34,435 |
| Biggest Trading Partners - US | 0 | - | 4.64 | 102,517 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.44 | 47,895 |
| U.S. State Superlatives #1 | 0 | - | 4.46 | 75,913 |
| U.S. State Superlatives #2 | 0 | - | 4.52 | 37,657 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.54 | 61,162 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.79 | 59,178 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 39,696 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.88 | 69,528 |
| U.S. State Nicknames Quiz | 0 | - | 4.48 | 46,789 |
| U.S. National Parks Quiz | 0 | - | 4.78 | 47,745 |
| Countries with American Expatriates | 0 | - | 4.58 | 41,166 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 38,607 |
| United States Country Quiz | 0 | - | 4.44 | 90,904 |
| Busiest Air Routes from the U.S. | 0 | - | 4.47 | 73,227 |
| Politicians with Other Careers Quiz | 0 | - | 3.96 | 14,597 |
| Main Parts of the U.S. Budget | 0 | - | 3.55 | 8,204 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,226,314 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.78 | 58,106 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.18 | 41,708 |
| Countries Closest to Canada | 0 | - | 4.90 | 186,160 |
| Asian Last Names in the United States | 0 | - | 4.42 | 43,803 |
| Canada or Africa by Area | 0 | - | 4.81 | 14,470 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 707,069 |
| Most Guessed U.S. Cities | 0 | - | 4.90 | 93,105 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 62,720 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 199,796 |
| American Political Words | 0 | - | 4.41 | 22,462 |
| Children of U.S. Presidents | 0 | - | 3.94 | 16,267 |
| 10 Closest Megacities to New York City | 0 | - | 4.51 | 64,675 |
| New England States | 0 | - | 4.52 | 52,587 |
| US States by Land Area | 0 | - | 4.54 | 48,962 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 36,436 |
| Add a Letter - Make a U.S. State | 0 | - | 4.75 | 77,326 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 51,712 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.78 | 37,717 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 37,675 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 35,589 |
| 10 Easternmost U.S. States | 0 | - | 4.54 | 53,373 |
| The Only U.S. State ... #1 | 0 | - | 4.55 | 83,255 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.48 | 40,918 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 104,045 |
| United States Map Quiz | 0 | - | 4.98 | 3,933,793 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 49,593 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.69 | 60,656 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.75 | 54,387 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.76 | 53,225 |
| Longest U.S. State Borders | 0 | - | 4.66 | 34,941 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 58,573 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.30 | 35,355 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 31,577 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.51 | 27,743 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.54 | 31,918 |
| U.S. States with the Fewest Borders | 0 | - | 4.76 | 106,878 |
| U.S. States with the Most Borders | 0 | - | 4.56 | 61,247 |
| Belize Country Quiz | 0 | - | 4.88 | 19,065 |
| Largest United States Airlines | 0 | - | 4.38 | 52,421 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 108,199 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.38 | 7,914 |
| Countries Closest to United States A-Z | 0 | - | 4.84 | 108,598 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,464 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 398,668 |
| Florida Pro Sport Teams | 0 | - | 4.66 | 10,543 |
| Georgia ... or Georgia? | 0 | - | 4.79 | 72,654 |
| American Legal Vocabulary | 0 | - | 4.40 | 32,390 |
| U.S. Cities by Picture #1 | 0 | - | 4.37 | 32,125 |
| Cities by Picture #2 | 0 | - | 4.22 | 32,768 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 357,077 |
| Famous People from California by Picture | 0 | - | 4.31 | 32,465 |
| California Groups of Things | 0 | - | 4.23 | 43,234 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.40 | 56,268 |
| Hawaiian Islands Map Quiz | 0 | - | 4.75 | 21,236 |
| New York Groups of Things | 0 | - | 4.39 | 57,682 |
| Famous People from Texas by Picture | 0 | - | 4.04 | 31,841 |
| People on Money - United States | 0 | - | 4.31 | 61,982 |
| U.S. History Groups of Two | 0 | - | 4.25 | 42,069 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.34 | 71,384 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.49 | 20,641 |
| Flyover States | 0 | - | 4.51 | 28,193 |
| U.S. States With Double Letters | 0 | - | 4.63 | 21,310 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.30 | 58,391 |
| U.S. States by Borders | 0 | - | 4.56 | 26,633 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 70,413 |
| Name a Valid U.S. State #3 | 0 | - | 4.77 | 44,732 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.38 | 121,632 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.49 | 43,516 |
| Famous Canadians by Picture | 0 | - | 4.46 | 30,037 |
| European Secessionist Movements on a Map | 0 | - | 4.51 | 31,894 |
| Monarchies of Asia | 0 | - | 4.95 | 54,796 |
| Flags of North and South America Quiz | 0 | - | 4.99 | 316,016 |
| The Only American Country ... | 0 | - | 4.94 | 111,506 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 102,296 |
| Mexico States Map Quiz | 0 | - | 4.80 | 92,119 |
| U.S. State Border Crossings | 0 | - | 4.96 | 82,995 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 66,481 |
| U.S. Bill of Rights | 0 | - | 4.53 | 31,218 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 170,161 |
| Cities and Towns of Massachusetts | 0 | - | 4.90 | 62,263 |
| Who Did that Motown Song | 0 | - | 4.45 | 12,720 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 19,850 |
| U.S. States with the Lowest HDI | 0 | - | 4.46 | 27,670 |
| Which U.S. State - Multiple Choice | 0 | - | 4.45 | 19,154 |
| Movies by State Quiz | 0 | - | 4.23 | 39,533 |
| U.S. States with the Fewest Traffic Fatalities | 0 | - | 4.21 | 19,663 |
| U.S. States with the Most Traffic Fatalities | 0 | - | 4.07 | 17,850 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.60 | 31,302 |
| Canada Country Quiz | 0 | - | 4.54 | 122,867 |
| Canada Cities Map Quiz | 0 | - | 4.57 | 110,393 |
| Catholic Countries in Europe | 0 | - | 4.86 | 85,309 |
| Monarchies of Europe | 0 | - | 4.89 | 88,212 |
| English Monarchs Quiz | 0 | - | 4.91 | 454,466 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 117,274 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 103,584 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 111,339 |
| Mexico Country Quiz | 0 | - | 4.48 | 67,282 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.90 | 42,134 |
| Brazil States Map Quiz | 0 | - | 4.84 | 40,806 |
| States of Brazil | 0 | - | 4.97 | 71,090 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 18,530 |
| U.S. States by Picture #1 | 0 | - | 4.17 | 14,475 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.57 | 131,701 |
| Most-Visited U.S. Cities | 0 | - | 4.87 | 75,259 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 64,607 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.33 | 10,535 |
| Geography of California | 0 | - | 4.23 | 9,769 |
| California Pro Sport Teams | 0 | - | 4.25 | 22,186 |
| Chicago City Trivia | 0 | - | 4.26 | 30,522 |
| New York Pro Sport Teams | 0 | - | 4.30 | 24,774 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.85 | 22,515 |
| Texas Pro Sport Teams | 0 | - | 4.13 | 16,288 |
| History of Pennsylvania | 0 | - | 4.09 | 6,523 |
| History of Virginia | 0 | - | 4.33 | 11,011 |
| Washington State by Picture | 0 | - | 4.18 | 7,218 |
| Events in U.S. History | 0 | - | 4.38 | 26,433 |
| Events by U.S. State #1 | 0 | - | 4.42 | 21,923 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.42 | 31,546 |
| Most Valuable Crops by U.S. State | 0 | - | 4.39 | 37,090 |
| U.S. States with the Most Venomous Snake Species | 0 | - | 4.47 | 25,232 |
| U.S. States with the Most Endangered Species | 0 | - | 4.50 | 13,911 |
| African-American Historical Figures | 0 | - | 4.14 | 16,468 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 79,964 |
| Most-Visited Countries by Canadians | 0 | - | 4.79 | 38,062 |
| Top 10 Coldest European Countries | 0 | - | 4.95 | 183,032 |
| Top 10 Hottest European Countries | 0 | - | 4.87 | 117,022 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 181,759 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 204,943 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 146,012 |
