| The American Civil War | 0 | - | 4.62 | 52,516 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,358 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,711,875 |
| The Vietnam War | 0 | - | 4.44 | 35,595 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,417 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 508,277 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,526 |
| Countries in World War I | 0 | - | 4.88 | 228,593 |
| Hawaiian Islands | 0 | - | 4.83 | 42,804 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,413 |
| U.S. State Flags | 0 | - | 4.89 | 171,576 |
| Battle to Country | 0 | - | 4.91 | 53,618 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,971 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,300 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,008 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,818 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,212 |
| Presidential Middle Names | 0 | - | 4.41 | 60,472 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,489 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,702 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,513 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,148 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,093 |
| Countries in World War II | 0 | - | 4.54 | 915,570 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,078 |
| The Iraq War | 0 | - | 4.47 | 15,679 |
| United States Map Quiz | 0 | - | 4.98 | 4,164,863 |
| American Monopoly Board - Map Quiz | 0 | - | 4.52 | 21,228 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 630,980 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,482 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,398 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,050 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 62,052 |
| Important Cities in WWII | 0 | - | 4.42 | 93,656 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,344 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,118 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,838 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,314 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,600 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,298 |
| First Ladies of the United States | 0 | - | 4.28 | 85,783 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,255 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,530 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,302 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,252 |
| Harvard University | 0 | - | 4.15 | 8,309 |
| Las Vegas Casinos | 0 | - | 4.13 | 38,098 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,304 |
| U.S. States that Border Canada | 0 | - | 4.91 | 185,769 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,865 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,959 |
| The Persian Gulf War | 0 | - | 4.02 | 8,468 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,656 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,916 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,837 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,672 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,179 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,653 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,488 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,315 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,789 |
| American Founding Fathers | 0 | - | 4.42 | 23,248 |
| History of Florida | 0 | - | 4.45 | 9,849 |
| Georgia Counties | 0 | - | 4.51 | 49,722 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,508 |
| New York Counties | 0 | - | 4.65 | 50,870 |
| Texas Counties | 0 | - | 4.56 | 77,247 |
| History of Texas | 0 | - | 4.43 | 14,663 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,079 |
| North Carolina Counties | 0 | - | 4.54 | 53,469 |
| Ohio Counties | 0 | - | 4.48 | 45,977 |
| Pennsylvania Counties | 0 | - | 4.50 | 53,089 |
| Virginia Counties | 0 | - | 4.45 | 33,356 |
| West Virginia Counties | 0 | - | 4.63 | 33,895 |
| American History Quotes #1 | 0 | - | 4.37 | 96,123 |
| American History Quotes #2 | 0 | - | 4.38 | 41,460 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,290 |
| US States Quiz | 0 | - | 5.00 | 16,933,173 |
| Major U.S. Rivers with State Names | 0 | - | 4.49 | 39,666 |
| Satellite Images - U.S. States | 0 | - | 4.54 | 45,251 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,495 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 42,070 |
| Cartoon Versions of U.S. States | 0 | - | 4.75 | 64,034 |
| U.S. States by Nickname | 0 | - | 4.57 | 69,617 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,474 |
| Monarchies of Europe | 0 | - | 4.90 | 98,445 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,793 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,861 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,048 |
| Monarchies of Asia | 0 | - | 4.97 | 71,295 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,082 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,477 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,182 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,969 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,011 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,160 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 333,655 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,059 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,688 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,754 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,687 |
| The John Adams Presidency | 0 | - | 4.12 | 8,765 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,751 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,874 |
| California Counties Map Quiz | 0 | - | 4.36 | 34,533 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,470 |
| Word Puzzles - U.S. States | 0 | - | 3.76 | 42,557 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,936 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,428 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,354 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,967 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,525 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,965 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,383 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,158 |
| Name the English Monarchs | 0 | - | 4.91 | 504,502 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,547 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,937 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,481 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,223 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,167 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,891 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,718 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,621 |
| Puerto Rico Trivia | 0 | - | 4.51 | 12,030 |
| Top U.S. Universities | 0 | - | 4.15 | 145,452 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,268 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 52,337 |
| Pixelated United States Map | 0 | - | 4.88 | 94,522 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,054 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,079 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,788 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,752 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,955 |
| U.S. States by Governor | 0 | - | 4.43 | 18,084 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,723 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,720 |
| The George Washington Presidency | 0 | - | 4.03 | 14,572 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,952 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,717 |
| Star-Spangled Banner Lyrics | 0 | - | 4.36 | 179,611 |
| History of California | 0 | - | 4.40 | 18,771 |
| California Counties | 0 | - | 4.39 | 119,809 |
| Colorado Counties | 0 | - | 4.45 | 26,817 |
| Florida Counties | 0 | - | 4.39 | 48,786 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,242 |
| State Quiz - Hawaii | 0 | - | 4.35 | 65,462 |
| Illinois Counties | 0 | - | 4.56 | 30,509 |
| History of Illinois | 0 | - | 4.24 | 11,241 |
| Indiana Counties | 0 | - | 4.46 | 29,083 |
| History of Maryland | 0 | - | 4.06 | 6,706 |
| History of Massachusetts | 0 | - | 4.14 | 8,408 |
| Michigan Counties | 0 | - | 4.63 | 30,508 |
| History of Michigan | 0 | - | 4.26 | 6,964 |
| History of New York | 0 | - | 4.36 | 16,385 |
| U.S. States that Border Missouri | 0 | - | 4.55 | 12,842 |
| New Jersey Counties | 0 | - | 4.57 | 30,440 |
| History of New Jersey | 0 | - | 4.38 | 7,288 |
| History of Ohio | 0 | - | 4.14 | 7,361 |
| History of Tennessee | 0 | - | 4.29 | 7,676 |
| Washington Counties | 0 | - | 4.78 | 27,007 |
| History of Washington State | 0 | - | 4.27 | 6,890 |
| Wisconsin Counties | 0 | - | 4.51 | 27,061 |
| Events in U.S. History | 0 | - | 4.41 | 28,734 |
| U.S. History A-Z #1 | 0 | - | 4.36 | 30,223 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,145 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,652 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,194 |
| U.S. States Bordering the Great Lakes | 0 | - | 4.55 | 18,276 |
| Top 10 Most Jewish U.S. States | 0 | - | 4.31 | 43,046 |
| States and Provinces that Touch the Great Lakes | 0 | - | 4.55 | 28,919 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,804 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,746 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,433 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,759 |
| U.S. States By Population | 0 | - | 4.92 | 153,814 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,809 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,638 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 66,615 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,589 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,919 |
| US States with an Empty Map | 0 | - | 5.00 | 626,475 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,761 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,347 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,583 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,359 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,845 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,601 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,690 |
| TV Shows by U.S. State | 0 | - | 4.33 | 47,496 |
| U.S. States by Alternate Nicknames | 0 | - | 4.24 | 42,955 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 23,085 |
| U.S. National Parks by State - Multiple Choice | 0 | - | 4.46 | 19,289 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,342 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,986 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,453 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,699 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,481 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,880 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,366 |
