| The American Civil War | 0 | - | 4.62 | 52,313 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,177 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,678,824 |
| The Vietnam War | 0 | - | 4.43 | 35,429 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,852 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 504,513 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,437 |
| Countries in World War I | 0 | - | 4.88 | 227,574 |
| Hawaiian Islands | 0 | - | 4.83 | 42,583 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,229 |
| U.S. State Flags | 0 | - | 4.89 | 169,144 |
| Battle to Country | 0 | - | 4.91 | 52,997 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,724 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,586 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,356 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,025 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,404 |
| Presidential Middle Names | 0 | - | 4.41 | 59,980 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,042 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,273 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,299 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,906 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,802 |
| Countries in World War II | 0 | - | 4.54 | 909,182 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,876 |
| The Iraq War | 0 | - | 4.47 | 15,615 |
| United States Map Quiz | 0 | - | 4.98 | 4,149,761 |
| American Monopoly Board - Map Quiz | 0 | - | 4.52 | 21,178 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 623,307 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,210 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,306 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,183 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,742 |
| Important Cities in WWII | 0 | - | 4.42 | 93,246 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,320 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,032 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,724 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,298 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,776 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,210 |
| First Ladies of the United States | 0 | - | 4.28 | 85,412 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,167 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,566 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,745 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,105 |
| Harvard University | 0 | - | 4.15 | 8,284 |
| Las Vegas Casinos | 0 | - | 4.12 | 38,023 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,234 |
| U.S. States that Border Canada | 0 | - | 4.91 | 183,901 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,747 |
| The Persian Gulf War | 0 | - | 4.02 | 8,432 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,259 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,942 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,583 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,225 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,354 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,136 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,085 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,908 |
| American Founding Fathers | 0 | - | 4.42 | 23,157 |
| History of Florida | 0 | - | 4.45 | 9,799 |
| Georgia Counties | 0 | - | 4.50 | 49,322 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,547 |
| New York Counties | 0 | - | 4.65 | 50,270 |
| Texas Counties | 0 | - | 4.55 | 76,510 |
| History of Texas | 0 | - | 4.43 | 14,588 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,728 |
| North Carolina Counties | 0 | - | 4.53 | 52,994 |
| Ohio Counties | 0 | - | 4.47 | 45,664 |
| Pennsylvania Counties | 0 | - | 4.49 | 52,477 |
| Virginia Counties | 0 | - | 4.45 | 33,131 |
| West Virginia Counties | 0 | - | 4.63 | 33,686 |
| American History Quotes #1 | 0 | - | 4.37 | 95,891 |
| American History Quotes #2 | 0 | - | 4.38 | 41,334 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,188 |
| US States Quiz | 0 | - | 5.00 | 16,796,022 |
| Major U.S. Rivers with State Names | 0 | - | 4.49 | 39,479 |
| Satellite Images - U.S. States | 0 | - | 4.53 | 45,056 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,356 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 41,875 |
| Cartoon Versions of U.S. States | 0 | - | 4.77 | 63,741 |
| U.S. States by Nickname | 0 | - | 4.57 | 69,426 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,672 |
| Monarchies of Europe | 0 | - | 4.90 | 97,769 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,483 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,642 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,850 |
| Monarchies of Asia | 0 | - | 4.97 | 70,876 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,690 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,418 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,851 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,874 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,533 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,634 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,139 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,904 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 242,581 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 330,233 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,874 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,565 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,693 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,579 |
| The John Adams Presidency | 0 | - | 4.12 | 8,712 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,716 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,813 |
| California Counties Map Quiz | 0 | - | 4.36 | 34,403 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 65,959 |
| Word Puzzles - U.S. States | 0 | - | 3.76 | 42,465 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,269 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,707 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,584 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,245 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,078 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,265 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,521 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,978 |
| Name the English Monarchs | 0 | - | 4.92 | 500,530 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,722 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 120,161 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,438 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,144 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,041 |
| Hindu Countries | 0 | - | 4.86 | 49,886 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,597 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 82,403 |
| Puerto Rico Trivia | 0 | - | 4.51 | 11,973 |
| Top U.S. Universities | 0 | - | 4.15 | 144,612 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,014 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.51 | 41,789 |
| Pixelated United States Map | 0 | - | 4.89 | 93,895 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,110 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,348 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,950 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,528 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,277 |
| U.S. States by Governor | 0 | - | 4.43 | 18,026 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,634 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,617 |
| The George Washington Presidency | 0 | - | 4.03 | 14,512 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,908 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,643 |
| Star-Spangled Banner Lyrics | 0 | - | 4.36 | 179,072 |
| History of California | 0 | - | 4.40 | 18,729 |
| California Counties | 0 | - | 4.39 | 118,668 |
| Colorado Counties | 0 | - | 4.45 | 26,531 |
| Florida Counties | 0 | - | 4.39 | 48,334 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,199 |
| State Quiz - Hawaii | 0 | - | 4.35 | 65,149 |
| Illinois Counties | 0 | - | 4.56 | 30,259 |
| History of Illinois | 0 | - | 4.24 | 11,202 |
| Indiana Counties | 0 | - | 4.46 | 28,786 |
| History of Maryland | 0 | - | 4.06 | 6,674 |
| History of Massachusetts | 0 | - | 4.14 | 8,367 |
| Michigan Counties | 0 | - | 4.63 | 30,214 |
| History of Michigan | 0 | - | 4.26 | 6,927 |
| History of New York | 0 | - | 4.36 | 16,324 |
| U.S. States that Border Missouri | 0 | - | 4.55 | 12,777 |
| New Jersey Counties | 0 | - | 4.56 | 30,159 |
| History of New Jersey | 0 | - | 4.38 | 7,234 |
| History of Ohio | 0 | - | 4.14 | 7,324 |
| History of Tennessee | 0 | - | 4.29 | 7,646 |
| Washington Counties | 0 | - | 4.77 | 26,721 |
| History of Washington State | 0 | - | 4.27 | 6,858 |
| Wisconsin Counties | 0 | - | 4.51 | 26,796 |
| U.S. History A-Z #1 | 0 | - | 4.36 | 29,840 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,059 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,572 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,451 |
| U.S. States Bordering the Great Lakes | 0 | - | 4.54 | 18,223 |
| Top 10 Most Jewish U.S. States | 0 | - | 4.31 | 42,876 |
| States and Provinces that Touch the Great Lakes | 0 | - | 4.54 | 28,872 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,002 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,012 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,484 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,698 |
| U.S. States By Population | 0 | - | 4.92 | 152,858 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,991 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,220 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 66,381 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 53,738 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,193 |
| US States with an Empty Map | 0 | - | 5.00 | 621,881 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,258 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,155 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,021 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,027 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,344 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,415 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,560 |
| TV Shows by U.S. State | 0 | - | 4.33 | 47,384 |
| U.S. States by Alternate Nicknames | 0 | - | 4.24 | 42,877 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 22,988 |
| U.S. National Parks by State - Multiple Choice | 0 | - | 4.46 | 19,234 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,623 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,418 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,927 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,358 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,021 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,629 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,207 |
