| The American Civil War | 0 | - | 4.62 | 52,170 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,308 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,655,999 |
| The Vietnam War | 0 | - | 4.43 | 35,302 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,440 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 502,057 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,453 |
| Countries in World War I | 0 | - | 4.88 | 226,648 |
| Hawaiian Islands | 0 | - | 4.83 | 42,437 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,098 |
| U.S. State Flags | 0 | - | 4.89 | 167,206 |
| Battle to Country | 0 | - | 4.91 | 52,550 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,538 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,070 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,972 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,978 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,535 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,023 |
| Presidential Middle Names | 0 | - | 4.41 | 59,722 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,757 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,840 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,177 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,736 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,620 |
| Countries in World War II | 0 | - | 4.54 | 904,835 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,753 |
| The Iraq War | 0 | - | 4.47 | 15,559 |
| United States Map Quiz | 0 | - | 4.98 | 4,142,289 |
| American Monopoly Board - Map Quiz | 0 | - | 4.52 | 21,141 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 618,784 |
| Six Flags Over Texas | 0 | - | 4.79 | 63,018 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,892 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,682 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,558 |
| Important Cities in WWII | 0 | - | 4.42 | 92,895 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,305 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,885 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,670 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,865 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,168 |
| First Ladies of the United States | 0 | - | 4.28 | 85,253 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,116 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,627 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,328 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,004 |
| Harvard University | 0 | - | 4.15 | 8,266 |
| Las Vegas Casinos | 0 | - | 4.12 | 37,973 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,187 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,536 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,693 |
| The Persian Gulf War | 0 | - | 4.02 | 8,405 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,972 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,367 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,383 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,891 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,129 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 80,888 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 74,914 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,909 |
| American Founding Fathers | 0 | - | 4.41 | 23,074 |
| History of Florida | 0 | - | 4.45 | 9,767 |
| Georgia Counties | 0 | - | 4.50 | 49,111 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,092 |
| New York Counties | 0 | - | 4.64 | 49,912 |
| Texas Counties | 0 | - | 4.55 | 76,075 |
| History of Texas | 0 | - | 4.43 | 14,554 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,511 |
| North Carolina Counties | 0 | - | 4.53 | 52,725 |
| Ohio Counties | 0 | - | 4.47 | 45,431 |
| Pennsylvania Counties | 0 | - | 4.48 | 52,100 |
| Virginia Counties | 0 | - | 4.45 | 32,931 |
| West Virginia Counties | 0 | - | 4.61 | 33,539 |
| American History Quotes #1 | 0 | - | 4.37 | 95,696 |
| American History Quotes #2 | 0 | - | 4.38 | 41,229 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,081 |
| US States Quiz | 0 | - | 5.00 | 16,706,444 |
| Major U.S. Rivers with State Names | 0 | - | 4.49 | 39,365 |
| Satellite Images - U.S. States | 0 | - | 4.53 | 44,920 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,257 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 41,772 |
| Cartoon Versions of U.S. States | 0 | - | 4.77 | 63,541 |
| U.S. States by Nickname | 0 | - | 4.57 | 69,287 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,249 |
| Monarchies of Europe | 0 | - | 4.90 | 97,349 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,529 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,989 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,702 |
| Monarchies of Asia | 0 | - | 4.97 | 70,613 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,440 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,933 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,383 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,122 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,107 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,049 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,680 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,207 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 241,021 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,114 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,750 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,463 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,663 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,510 |
| The John Adams Presidency | 0 | - | 4.12 | 8,679 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,685 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,776 |
| California Counties Map Quiz | 0 | - | 4.36 | 34,338 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,646 |
| Word Puzzles - U.S. States | 0 | - | 3.76 | 42,421 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,329 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,274 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,141 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,291 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,630 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,231 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,947 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,336 |
| Name the English Monarchs | 0 | - | 4.92 | 498,096 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,507 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,271 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,747 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,709 |
| Hindu Countries | 0 | - | 4.86 | 49,599 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,189 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,116 |
| Puerto Rico Trivia | 0 | - | 4.51 | 11,938 |
| Top U.S. Universities | 0 | - | 4.15 | 144,113 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,816 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.50 | 40,106 |
| Pixelated United States Map | 0 | - | 4.89 | 93,510 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,503 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,889 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,441 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,362 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,619 |
| U.S. States by Governor | 0 | - | 4.43 | 17,984 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,577 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,552 |
| The George Washington Presidency | 0 | - | 4.03 | 14,477 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,871 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,610 |
| Star-Spangled Banner Lyrics | 0 | - | 4.36 | 178,567 |
| History of California | 0 | - | 4.40 | 18,697 |
| California Counties | 0 | - | 4.39 | 118,152 |
| Colorado Counties | 0 | - | 4.44 | 26,314 |
| Florida Counties | 0 | - | 4.39 | 48,116 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,180 |
| State Quiz - Hawaii | 0 | - | 4.35 | 64,938 |
| Illinois Counties | 0 | - | 4.56 | 30,061 |
| History of Illinois | 0 | - | 4.24 | 11,177 |
| Indiana Counties | 0 | - | 4.46 | 28,620 |
| History of Maryland | 0 | - | 4.06 | 6,649 |
| History of Massachusetts | 0 | - | 4.14 | 8,332 |
| Michigan Counties | 0 | - | 4.63 | 30,058 |
| History of Michigan | 0 | - | 4.26 | 6,903 |
| History of New York | 0 | - | 4.36 | 16,284 |
| U.S. States that Border Missouri | 0 | - | 4.55 | 12,739 |
| New Jersey Counties | 0 | - | 4.56 | 29,934 |
| History of New Jersey | 0 | - | 4.38 | 7,209 |
| History of Ohio | 0 | - | 4.14 | 7,309 |
| History of Tennessee | 0 | - | 4.29 | 7,635 |
| Washington Counties | 0 | - | 4.78 | 26,559 |
| History of Washington State | 0 | - | 4.27 | 6,842 |
| Wisconsin Counties | 0 | - | 4.51 | 26,556 |
| U.S. History A-Z #1 | 0 | - | 4.35 | 29,394 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,995 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,500 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,764 |
| U.S. States Bordering the Great Lakes | 0 | - | 4.54 | 18,185 |
| Top 10 Most Jewish U.S. States | 0 | - | 4.31 | 42,750 |
| States and Provinces that Touch the Great Lakes | 0 | - | 4.54 | 28,849 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,389 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,440 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,704 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,956 |
| U.S. States By Population | 0 | - | 4.92 | 152,403 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,436 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,884 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 66,198 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.46 | 52,329 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,620 |
| US States with an Empty Map | 0 | - | 5.00 | 619,016 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,918 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,039 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,580 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,769 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,910 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,283 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,485 |
| TV Shows by U.S. State | 0 | - | 4.33 | 47,288 |
| U.S. States by Alternate Nicknames | 0 | - | 4.24 | 42,809 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 22,920 |
| U.S. National Parks by State - Multiple Choice | 0 | - | 4.46 | 19,201 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,899 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,094 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,513 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,080 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,671 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,437 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,098 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,422 |
