| The American Civil War | 0 | - | 4.62 | 52,265 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,701 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,672,308 |
| The Vietnam War | 0 | - | 4.43 | 35,390 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,757 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 503,874 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,175 |
| Countries in World War I | 0 | - | 4.88 | 227,352 |
| Hawaiian Islands | 0 | - | 4.83 | 42,555 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,196 |
| U.S. State Flags | 0 | - | 4.89 | 168,643 |
| Battle to Country | 0 | - | 4.91 | 52,873 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,665 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,457 |
| 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 | 93,299 |
| Presidential Middle Names | 0 | - | 4.41 | 59,907 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,962 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,175 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,267 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,809 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,742 |
| Countries in World War II | 0 | - | 4.54 | 908,016 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,843 |
| The Iraq War | 0 | - | 4.47 | 15,591 |
| United States Map Quiz | 0 | - | 4.98 | 4,147,660 |
| American Monopoly Board - Map Quiz | 0 | - | 4.52 | 21,166 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 621,971 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,134 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,191 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,051 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,680 |
| Important Cities in WWII | 0 | - | 4.42 | 93,162 |
| 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 | 424,882 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,594 |
| 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 | 380,289 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,645 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,074 |
| 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 | 183,549 |
| 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 | 96,180 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,768 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,517 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,134 |
| 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 | 81,065 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,035 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,626 |
| American Founding Fathers | 0 | - | 4.42 | 23,101 |
| History of Florida | 0 | - | 4.45 | 9,787 |
| Georgia Counties | 0 | - | 4.50 | 49,248 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,403 |
| New York Counties | 0 | - | 4.65 | 50,175 |
| Texas Counties | 0 | - | 4.55 | 76,394 |
| History of Texas | 0 | - | 4.43 | 14,576 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,663 |
| North Carolina Counties | 0 | - | 4.53 | 52,905 |
| Ohio Counties | 0 | - | 4.47 | 45,593 |
| Pennsylvania Counties | 0 | - | 4.48 | 52,376 |
| Virginia Counties | 0 | - | 4.45 | 33,106 |
| West Virginia Counties | 0 | - | 4.62 | 33,640 |
| American History Quotes #1 | 0 | - | 4.37 | 95,793 |
| American History Quotes #2 | 0 | - | 4.38 | 41,277 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,134 |
| US States Quiz | 0 | - | 5.00 | 16,771,373 |
| Major U.S. Rivers with State Names | 0 | - | 4.49 | 39,453 |
| Satellite Images - U.S. States | 0 | - | 4.53 | 45,020 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,341 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 41,844 |
| Cartoon Versions of U.S. States | 0 | - | 4.77 | 63,685 |
| U.S. States by Nickname | 0 | - | 4.57 | 69,405 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,553 |
| Monarchies of Europe | 0 | - | 4.90 | 97,664 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,224 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,481 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,819 |
| Monarchies of Asia | 0 | - | 4.97 | 70,806 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,605 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,271 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,729 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,536 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,416 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,530 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,980 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,702 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 242,110 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 329,584 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,840 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,542 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,685 |
| 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 | 65,876 |
| Word Puzzles - U.S. States | 0 | - | 3.76 | 42,456 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,067 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,575 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,448 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,994 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,636 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,985 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,381 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,783 |
| Name the English Monarchs | 0 | - | 4.92 | 499,878 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,668 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 119,028 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,235 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,940 |
| Hindu Countries | 0 | - | 4.86 | 49,801 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,488 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 81,591 |
| Puerto Rico Trivia | 0 | - | 4.51 | 11,962 |
| Top U.S. Universities | 0 | - | 4.15 | 144,473 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,926 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.51 | 41,565 |
| Pixelated United States Map | 0 | - | 4.89 | 93,782 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,944 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,203 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,780 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,487 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,090 |
| U.S. States by Governor | 0 | - | 4.43 | 18,012 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,615 |
| 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 | 118,521 |
| Colorado Counties | 0 | - | 4.44 | 26,472 |
| Florida Counties | 0 | - | 4.39 | 48,276 |
| 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 | 28,725 |
| History of Maryland | 0 | - | 4.06 | 6,667 |
| History of Massachusetts | 0 | - | 4.14 | 8,353 |
| Michigan Counties | 0 | - | 4.63 | 30,172 |
| 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 | 30,115 |
| History of New Jersey | 0 | - | 4.38 | 7,225 |
| 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 | 29,757 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,042 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,544 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,294 |
| U.S. States Bordering the Great Lakes | 0 | - | 4.54 | 18,210 |
| Top 10 Most Jewish U.S. States | 0 | - | 4.31 | 42,843 |
| States and Provinces that Touch the Great Lakes | 0 | - | 4.54 | 28,863 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,875 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,874 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,297 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,535 |
| U.S. States By Population | 0 | - | 4.92 | 152,753 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,849 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,147 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 66,324 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 53,580 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,046 |
| US States with an Empty Map | 0 | - | 5.00 | 621,141 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,175 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,123 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,911 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,964 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,229 |
| 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 | 42,860 |
| 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 | 159,501 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,361 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,831 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,304 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,960 |
| 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 | 63,553 |
