| The American Civil War | 0 | - | 4.62 | 52,268 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,709 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,672,421 |
| The Vietnam War | 0 | - | 4.43 | 35,392 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,758 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 503,889 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,177 |
| Countries in World War I | 0 | - | 4.88 | 227,357 |
| Hawaiian Islands | 0 | - | 4.83 | 42,556 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,196 |
| U.S. State Flags | 0 | - | 4.89 | 168,660 |
| Battle to Country | 0 | - | 4.91 | 52,875 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,665 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,462 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,233 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,890 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,300 |
| Presidential Middle Names | 0 | - | 4.41 | 59,908 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,963 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,177 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,267 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,810 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,747 |
| Countries in World War II | 0 | - | 4.54 | 908,047 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,844 |
| The Iraq War | 0 | - | 4.47 | 15,594 |
| United States Map Quiz | 0 | - | 4.98 | 4,147,724 |
| American Monopoly Board - Map Quiz | 0 | - | 4.52 | 21,167 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 622,001 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,139 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,193 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,051 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,681 |
| Important Cities in WWII | 0 | - | 4.42 | 93,167 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,316 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,960 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,695 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,887 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,596 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,195 |
| First Ladies of the United States | 0 | - | 4.28 | 85,359 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,157 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,291 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,645 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,076 |
| Harvard University | 0 | - | 4.15 | 8,279 |
| Las Vegas Casinos | 0 | - | 4.12 | 38,013 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,218 |
| U.S. States that Border Canada | 0 | - | 4.91 | 183,554 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,729 |
| The Persian Gulf War | 0 | - | 4.02 | 8,423 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,182 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,775 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,520 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,138 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,298 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,066 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,036 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,632 |
| American Founding Fathers | 0 | - | 4.42 | 23,101 |
| History of Florida | 0 | - | 4.45 | 9,788 |
| Georgia Counties | 0 | - | 4.50 | 49,250 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,407 |
| New York Counties | 0 | - | 4.65 | 50,177 |
| Texas Counties | 0 | - | 4.55 | 76,397 |
| History of Texas | 0 | - | 4.43 | 14,576 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,664 |
| North Carolina Counties | 0 | - | 4.53 | 52,910 |
| Ohio Counties | 0 | - | 4.47 | 45,595 |
| Pennsylvania Counties | 0 | - | 4.48 | 52,377 |
| Virginia Counties | 0 | - | 4.45 | 33,107 |
| West Virginia Counties | 0 | - | 4.62 | 33,643 |
| American History Quotes #1 | 0 | - | 4.37 | 95,795 |
| American History Quotes #2 | 0 | - | 4.38 | 41,281 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,136 |
| US States Quiz | 0 | - | 5.00 | 16,772,124 |
| Major U.S. Rivers with State Names | 0 | - | 4.49 | 39,455 |
| Satellite Images - U.S. States | 0 | - | 4.53 | 45,021 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,341 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 41,845 |
| Cartoon Versions of U.S. States | 0 | - | 4.77 | 63,689 |
| U.S. States by Nickname | 0 | - | 4.57 | 69,406 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,556 |
| Monarchies of Europe | 0 | - | 4.90 | 97,665 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,233 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,486 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,819 |
| Monarchies of Asia | 0 | - | 4.97 | 70,810 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,606 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,276 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,733 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,540 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,419 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,533 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,987 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,706 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 242,130 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 329,605 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,841 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,542 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,687 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,561 |
| The John Adams Presidency | 0 | - | 4.12 | 8,704 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,710 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,806 |
| California Counties Map Quiz | 0 | - | 4.36 | 34,392 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,880 |
| Word Puzzles - U.S. States | 0 | - | 3.76 | 42,456 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,072 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,592 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,449 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,002 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,645 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,991 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,388 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,786 |
| Name the English Monarchs | 0 | - | 4.92 | 499,901 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,670 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 119,080 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,248 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,942 |
| Hindu Countries | 0 | - | 4.86 | 49,802 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,489 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 81,633 |
| Puerto Rico Trivia | 0 | - | 4.51 | 11,962 |
| Top U.S. Universities | 0 | - | 4.15 | 144,474 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,927 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.51 | 41,569 |
| Pixelated United States Map | 0 | - | 4.89 | 93,786 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,953 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,208 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,782 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,491 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,094 |
| U.S. States by Governor | 0 | - | 4.43 | 18,012 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,616 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,600 |
| The George Washington Presidency | 0 | - | 4.03 | 14,501 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,901 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,637 |
| Star-Spangled Banner Lyrics | 0 | - | 4.36 | 178,978 |
| History of California | 0 | - | 4.40 | 18,714 |
| California Counties | 0 | - | 4.39 | 118,523 |
| Colorado Counties | 0 | - | 4.44 | 26,472 |
| Florida Counties | 0 | - | 4.39 | 48,277 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,194 |
| State Quiz - Hawaii | 0 | - | 4.35 | 65,098 |
| Illinois Counties | 0 | - | 4.56 | 30,176 |
| History of Illinois | 0 | - | 4.24 | 11,193 |
| Indiana Counties | 0 | - | 4.46 | 28,726 |
| History of Maryland | 0 | - | 4.06 | 6,667 |
| History of Massachusetts | 0 | - | 4.14 | 8,353 |
| Michigan Counties | 0 | - | 4.63 | 30,173 |
| History of Michigan | 0 | - | 4.26 | 6,918 |
| History of New York | 0 | - | 4.36 | 16,306 |
| U.S. States that Border Missouri | 0 | - | 4.55 | 12,768 |
| New Jersey Counties | 0 | - | 4.56 | 30,117 |
| History of New Jersey | 0 | - | 4.38 | 7,226 |
| History of Ohio | 0 | - | 4.14 | 7,320 |
| History of Tennessee | 0 | - | 4.29 | 7,643 |
| Washington Counties | 0 | - | 4.77 | 26,683 |
| History of Washington State | 0 | - | 4.27 | 6,848 |
| Wisconsin Counties | 0 | - | 4.51 | 26,718 |
| U.S. History A-Z #1 | 0 | - | 4.35 | 29,760 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,043 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,547 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,303 |
| U.S. States Bordering the Great Lakes | 0 | - | 4.54 | 18,210 |
| Top 10 Most Jewish U.S. States | 0 | - | 4.31 | 42,844 |
| States and Provinces that Touch the Great Lakes | 0 | - | 4.54 | 28,863 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,883 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,882 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,302 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,541 |
| U.S. States By Population | 0 | - | 4.92 | 152,755 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,853 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,151 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 66,325 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 53,585 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,048 |
| US States with an Empty Map | 0 | - | 5.00 | 621,166 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,178 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,125 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,919 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,965 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,230 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,376 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,538 |
| TV Shows by U.S. State | 0 | - | 4.33 | 47,361 |
| U.S. States by Alternate Nicknames | 0 | - | 4.24 | 42,861 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 22,974 |
| U.S. National Parks by State - Multiple Choice | 0 | - | 4.46 | 19,223 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,504 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,362 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,834 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,307 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,963 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,585 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,182 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,554 |
