| The American Civil War | 0 | - | 4.62 | 52,411 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,733 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,696,187 |
| The Vietnam War | 0 | - | 4.44 | 35,516 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,115 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 506,309 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,940 |
| Countries in World War I | 0 | - | 4.88 | 228,071 |
| Hawaiian Islands | 0 | - | 4.83 | 42,693 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,307 |
| U.S. State Flags | 0 | - | 4.89 | 170,268 |
| Battle to Country | 0 | - | 4.91 | 53,290 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,858 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,878 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,683 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,441 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,761 |
| Presidential Middle Names | 0 | - | 4.41 | 60,210 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,306 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,576 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,412 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,039 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,940 |
| Countries in World War II | 0 | - | 4.54 | 912,305 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,978 |
| The Iraq War | 0 | - | 4.47 | 15,650 |
| United States Map Quiz | 0 | - | 4.98 | 4,157,298 |
| American Monopoly Board - Map Quiz | 0 | - | 4.52 | 21,208 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 627,152 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,345 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,616 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,593 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,885 |
| Important Cities in WWII | 0 | - | 4.42 | 93,444 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,330 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,070 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,789 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,345 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,219 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,253 |
| First Ladies of the United States | 0 | - | 4.28 | 85,621 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,220 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,469 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,067 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,187 |
| Harvard University | 0 | - | 4.15 | 8,297 |
| Las Vegas Casinos | 0 | - | 4.13 | 38,057 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,266 |
| U.S. States that Border Canada | 0 | - | 4.91 | 184,801 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,825 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,739 |
| The Persian Gulf War | 0 | - | 4.02 | 8,449 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,452 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,393 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,711 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,433 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,077 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,498 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,307 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,179 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,699 |
| American Founding Fathers | 0 | - | 4.42 | 23,222 |
| History of Florida | 0 | - | 4.45 | 9,823 |
| Georgia Counties | 0 | - | 4.50 | 49,479 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,962 |
| New York Counties | 0 | - | 4.65 | 50,545 |
| Texas Counties | 0 | - | 4.55 | 76,719 |
| History of Texas | 0 | - | 4.43 | 14,621 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,912 |
| North Carolina Counties | 0 | - | 4.54 | 53,274 |
| Ohio Counties | 0 | - | 4.48 | 45,805 |
| Pennsylvania Counties | 0 | - | 4.49 | 52,757 |
| Virginia Counties | 0 | - | 4.45 | 33,234 |
| West Virginia Counties | 0 | - | 4.63 | 33,767 |
| American History Quotes #1 | 0 | - | 4.37 | 96,014 |
| American History Quotes #2 | 0 | - | 4.38 | 41,395 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,233 |
| US States Quiz | 0 | - | 5.00 | 16,865,090 |
| Major U.S. Rivers with State Names | 0 | - | 4.49 | 39,553 |
| Satellite Images - U.S. States | 0 | - | 4.53 | 45,149 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,415 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 41,976 |
| Cartoon Versions of U.S. States | 0 | - | 4.77 | 63,882 |
| U.S. States by Nickname | 0 | - | 4.57 | 69,532 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,075 |
| Monarchies of Europe | 0 | - | 4.90 | 98,099 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,095 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,150 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,944 |
| Monarchies of Asia | 0 | - | 4.97 | 71,070 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,864 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,809 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,548 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,304 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,132 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,915 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,586 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,423 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,855 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 331,775 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,969 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,630 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,726 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,644 |
| The John Adams Presidency | 0 | - | 4.12 | 8,745 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,742 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,850 |
| California Counties Map Quiz | 0 | - | 4.36 | 34,453 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,195 |
| Word Puzzles - U.S. States | 0 | - | 3.76 | 42,519 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,929 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,074 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,954 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,320 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,119 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,028 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,937 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,523 |
| Name the English Monarchs | 0 | - | 4.91 | 502,390 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,941 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 134,102 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 109,959 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,756 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,233 |
| Hindu Countries | 0 | - | 4.86 | 50,114 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,242 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,896 |
| Puerto Rico Trivia | 0 | - | 4.51 | 11,996 |
| Top U.S. Universities | 0 | - | 4.15 | 145,070 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,159 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.51 | 42,126 |
| Pixelated United States Map | 0 | - | 4.87 | 94,237 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,594 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,717 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,372 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,642 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,330 |
| U.S. States by Governor | 0 | - | 4.43 | 18,060 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,689 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,670 |
| The George Washington Presidency | 0 | - | 4.03 | 14,543 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,933 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,671 |
| Star-Spangled Banner Lyrics | 0 | - | 4.36 | 179,303 |
| History of California | 0 | - | 4.40 | 18,753 |
| California Counties | 0 | - | 4.39 | 119,218 |
| Colorado Counties | 0 | - | 4.45 | 26,658 |
| Florida Counties | 0 | - | 4.39 | 48,579 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,223 |
| State Quiz - Hawaii | 0 | - | 4.35 | 65,297 |
| Illinois Counties | 0 | - | 4.56 | 30,393 |
| History of Illinois | 0 | - | 4.24 | 11,218 |
| Indiana Counties | 0 | - | 4.46 | 28,948 |
| History of Maryland | 0 | - | 4.06 | 6,689 |
| History of Massachusetts | 0 | - | 4.14 | 8,389 |
| Michigan Counties | 0 | - | 4.63 | 30,339 |
| History of Michigan | 0 | - | 4.26 | 6,942 |
| History of New York | 0 | - | 4.36 | 16,350 |
| U.S. States that Border Missouri | 0 | - | 4.55 | 12,811 |
| New Jersey Counties | 0 | - | 4.57 | 30,298 |
| History of New Jersey | 0 | - | 4.38 | 7,258 |
| History of Ohio | 0 | - | 4.14 | 7,342 |
| History of Tennessee | 0 | - | 4.29 | 7,659 |
| Washington Counties | 0 | - | 4.77 | 26,856 |
| History of Washington State | 0 | - | 4.27 | 6,877 |
| Wisconsin Counties | 0 | - | 4.51 | 26,931 |
| Events in U.S. History | 0 | - | 4.41 | 28,661 |
| U.S. History A-Z #1 | 0 | - | 4.36 | 30,039 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,107 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,611 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,812 |
| U.S. States Bordering the Great Lakes | 0 | - | 4.54 | 18,248 |
| Top 10 Most Jewish U.S. States | 0 | - | 4.31 | 42,952 |
| States and Provinces that Touch the Great Lakes | 0 | - | 4.54 | 28,891 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,364 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,377 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,932 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,211 |
| U.S. States By Population | 0 | - | 4.92 | 153,508 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,391 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,420 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 66,491 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,089 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,548 |
| US States with an Empty Map | 0 | - | 5.00 | 624,253 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,483 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,239 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,254 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,190 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,583 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,516 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,625 |
| TV Shows by U.S. State | 0 | - | 4.33 | 47,437 |
| U.S. States by Alternate Nicknames | 0 | - | 4.24 | 42,913 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 23,036 |
| U.S. National Parks by State - Multiple Choice | 0 | - | 4.46 | 19,265 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,913 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,678 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,156 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,482 |
