| The American Civil War | 0 | - | 4.62 | 52,356 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,450 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,686,127 |
| The Vietnam War | 0 | - | 4.44 | 35,468 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,944 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,166 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,632 |
| Countries in World War I | 0 | - | 4.88 | 227,754 |
| Hawaiian Islands | 0 | - | 4.83 | 42,627 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,258 |
| U.S. State Flags | 0 | - | 4.89 | 169,561 |
| Battle to Country | 0 | - | 4.91 | 53,086 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 72,781 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,707 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,491 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,190 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,527 |
| Presidential Middle Names | 0 | - | 4.41 | 60,072 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,153 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,410 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,342 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,976 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,859 |
| Countries in World War II | 0 | - | 4.54 | 910,335 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,921 |
| The Iraq War | 0 | - | 4.47 | 15,627 |
| United States Map Quiz | 0 | - | 4.98 | 4,152,451 |
| American Monopoly Board - Map Quiz | 0 | - | 4.52 | 21,189 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 624,788 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,263 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,427 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,340 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,814 |
| Important Cities in WWII | 0 | - | 4.42 | 93,320 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,326 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,058 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,749 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,706 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,962 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,234 |
| First Ladies of the United States | 0 | - | 4.28 | 85,507 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,194 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 380,956 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,896 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,147 |
| Harvard University | 0 | - | 4.15 | 8,290 |
| Las Vegas Casinos | 0 | - | 4.12 | 38,030 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,245 |
| U.S. States that Border Canada | 0 | - | 4.91 | 184,218 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,785 |
| The Persian Gulf War | 0 | - | 4.02 | 8,440 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,335 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,103 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,623 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,305 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,405 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,193 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,118 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,223 |
| American Founding Fathers | 0 | - | 4.42 | 23,198 |
| History of Florida | 0 | - | 4.45 | 9,804 |
| Georgia Counties | 0 | - | 4.50 | 49,377 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,677 |
| New York Counties | 0 | - | 4.65 | 50,390 |
| Texas Counties | 0 | - | 4.55 | 76,584 |
| History of Texas | 0 | - | 4.43 | 14,601 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,785 |
| North Carolina Counties | 0 | - | 4.54 | 53,087 |
| Ohio Counties | 0 | - | 4.47 | 45,717 |
| Pennsylvania Counties | 0 | - | 4.49 | 52,562 |
| Virginia Counties | 0 | - | 4.45 | 33,162 |
| West Virginia Counties | 0 | - | 4.63 | 33,712 |
| American History Quotes #1 | 0 | - | 4.37 | 95,942 |
| American History Quotes #2 | 0 | - | 4.38 | 41,365 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,207 |
| US States Quiz | 0 | - | 5.00 | 16,821,856 |
| Major U.S. Rivers with State Names | 0 | - | 4.49 | 39,512 |
| Satellite Images - U.S. States | 0 | - | 4.53 | 45,093 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,379 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 41,910 |
| Cartoon Versions of U.S. States | 0 | - | 4.77 | 63,796 |
| U.S. States by Nickname | 0 | - | 4.57 | 69,459 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,840 |
| Monarchies of Europe | 0 | - | 4.90 | 97,890 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,690 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,817 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,887 |
| Monarchies of Asia | 0 | - | 4.97 | 70,934 |
| Asian Country Superlatives | 0 | - | 4.85 | 80,749 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,554 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,986 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,014 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,659 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,735 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,259 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,114 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,019 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 330,793 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,914 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,594 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,710 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,609 |
| The John Adams Presidency | 0 | - | 4.12 | 8,728 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,724 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,825 |
| California Counties Map Quiz | 0 | - | 4.36 | 34,430 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,040 |
| Word Puzzles - U.S. States | 0 | - | 3.76 | 42,486 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,476 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,812 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,716 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,468 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,437 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,546 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,658 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,146 |
| Name the English Monarchs | 0 | - | 4.91 | 501,177 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,788 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 120,893 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,609 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,289 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,110 |
| Hindu Countries | 0 | - | 4.86 | 49,965 |
| Top 10 Richest Countries in Africa | 0 | - | 4.86 | 75,712 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,036 |
| Puerto Rico Trivia | 0 | - | 4.51 | 11,982 |
| Top U.S. Universities | 0 | - | 4.15 | 144,782 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,079 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.51 | 41,933 |
| Pixelated United States Map | 0 | - | 4.87 | 94,026 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,275 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,467 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,088 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,565 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,462 |
| U.S. States by Governor | 0 | - | 4.43 | 18,035 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,661 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,641 |
| The George Washington Presidency | 0 | - | 4.03 | 14,528 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,912 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,653 |
| Star-Spangled Banner Lyrics | 0 | - | 4.36 | 179,162 |
| History of California | 0 | - | 4.40 | 18,735 |
| California Counties | 0 | - | 4.39 | 118,829 |
| Colorado Counties | 0 | - | 4.45 | 26,577 |
| Florida Counties | 0 | - | 4.39 | 48,410 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,205 |
| State Quiz - Hawaii | 0 | - | 4.35 | 65,213 |
| Illinois Counties | 0 | - | 4.56 | 30,325 |
| History of Illinois | 0 | - | 4.24 | 11,207 |
| Indiana Counties | 0 | - | 4.46 | 28,851 |
| History of Maryland | 0 | - | 4.06 | 6,679 |
| History of Massachusetts | 0 | - | 4.14 | 8,376 |
| Michigan Counties | 0 | - | 4.63 | 30,251 |
| History of Michigan | 0 | - | 4.26 | 6,932 |
| History of New York | 0 | - | 4.36 | 16,328 |
| U.S. States that Border Missouri | 0 | - | 4.55 | 12,787 |
| New Jersey Counties | 0 | - | 4.56 | 30,204 |
| History of New Jersey | 0 | - | 4.38 | 7,242 |
| History of Ohio | 0 | - | 4.14 | 7,330 |
| History of Tennessee | 0 | - | 4.29 | 7,653 |
| Washington Counties | 0 | - | 4.78 | 26,771 |
| History of Washington State | 0 | - | 4.27 | 6,867 |
| Wisconsin Counties | 0 | - | 4.51 | 26,844 |
| U.S. History A-Z #1 | 0 | - | 4.36 | 29,925 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,086 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,585 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,599 |
| U.S. States Bordering the Great Lakes | 0 | - | 4.54 | 18,232 |
| Top 10 Most Jewish U.S. States | 0 | - | 4.31 | 42,900 |
| States and Provinces that Touch the Great Lakes | 0 | - | 4.54 | 28,881 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,107 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,147 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,648 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,900 |
| U.S. States By Population | 0 | - | 4.92 | 152,969 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,135 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,294 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 66,411 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 53,883 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,337 |
| US States with an Empty Map | 0 | - | 5.00 | 622,955 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,348 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,176 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,083 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,084 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,428 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,457 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,585 |
| TV Shows by U.S. State | 0 | - | 4.33 | 47,405 |
| U.S. States by Alternate Nicknames | 0 | - | 4.24 | 42,889 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 23,002 |
| U.S. National Parks by State - Multiple Choice | 0 | - | 4.46 | 19,243 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,734 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,482 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,009 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,409 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,083 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,673 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,240 |
