| Deadliest U.S. Wars | 0 | - | 4.89 | 191,599 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,719,982 |
| The Vietnam War | 0 | - | 4.44 | 35,628 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,578 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,296 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,859 |
| Countries in World War I | 0 | - | 4.88 | 228,920 |
| Hawaiian Islands | 0 | - | 4.83 | 42,880 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,471 |
| U.S. State Flags | 0 | - | 4.89 | 172,305 |
| Battle to Country | 0 | - | 4.91 | 53,812 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,054 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,558 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,233 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,149 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,485 |
| Presidential Middle Names | 0 | - | 4.41 | 60,634 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,582 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,838 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,592 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,180 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,202 |
| Countries in World War II | 0 | - | 4.53 | 917,466 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,165 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,573 |
| The Iraq War | 0 | - | 4.47 | 15,695 |
| United States Map Quiz | 0 | - | 4.98 | 4,168,400 |
| American Monopoly Board - Map Quiz | 0 | - | 4.52 | 21,248 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 634,034 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,560 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,341 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,724 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,337 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,157 |
| Important Cities in WWII | 0 | - | 4.42 | 93,786 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,355 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,132 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,854 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,072 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,816 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,343 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,738 |
| First Ladies of the United States | 0 | - | 4.28 | 85,895 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,290 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,241 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,405 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,327 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,071 |
| Harvard University | 0 | - | 4.15 | 8,319 |
| Las Vegas Casinos | 0 | - | 4.13 | 38,127 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,329 |
| U.S. States that Border Canada | 0 | - | 4.91 | 186,302 |
| The Persian Gulf War | 0 | - | 4.02 | 8,475 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,925 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,076 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,790 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,641 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,934 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,829 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,233 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,745 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,599 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,381 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,445 |
| American Founding Fathers | 0 | - | 4.42 | 23,265 |
| History of Florida | 0 | - | 4.45 | 9,866 |
| Georgia Counties | 0 | - | 4.52 | 49,872 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,838 |
| New York Counties | 0 | - | 4.65 | 51,013 |
| Texas Counties | 0 | - | 4.56 | 77,705 |
| History of Texas | 0 | - | 4.43 | 14,679 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,190 |
| North Carolina Counties | 0 | - | 4.54 | 53,575 |
| Ohio Counties | 0 | - | 4.48 | 46,070 |
| Pennsylvania Counties | 0 | - | 4.50 | 53,242 |
| Virginia Counties | 0 | - | 4.45 | 33,419 |
| West Virginia Counties | 0 | - | 4.63 | 33,961 |
| American History Quotes #1 | 0 | - | 4.37 | 96,172 |
| American History Quotes #2 | 0 | - | 4.38 | 41,487 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,318 |
| US States Quiz | 0 | - | 5.00 | 16,968,403 |
| Major U.S. Rivers with State Names | 0 | - | 4.49 | 39,750 |
| Satellite Images - U.S. States | 0 | - | 4.54 | 45,308 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,534 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 42,127 |
| Cartoon Versions of U.S. States | 0 | - | 4.75 | 64,107 |
| U.S. States by Nickname | 0 | - | 4.57 | 69,683 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,649 |
| Monarchies of Europe | 0 | - | 4.90 | 98,696 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,135 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,138 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,856 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,551 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,666 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,096 |
| Monarchies of Asia | 0 | - | 4.97 | 71,418 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,209 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,674 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,363 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,206 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,333 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,929 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,730 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,105 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,769 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,735 |
| The John Adams Presidency | 0 | - | 4.12 | 8,777 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,765 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,906 |
| California Counties Map Quiz | 0 | - | 4.36 | 34,598 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,621 |
| Word Puzzles - U.S. States | 0 | - | 3.76 | 42,577 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,344 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,686 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,628 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,372 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,246 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,525 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,647 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,520 |
| Name the English Monarchs | 0 | - | 4.91 | 505,595 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,664 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 136,731 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,845 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,493 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,363 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,137 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,987 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 91,529 |
| Puerto Rico Trivia | 0 | - | 4.52 | 12,057 |
| Top U.S. Universities | 0 | - | 4.15 | 145,657 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,345 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 52,808 |
| Pixelated United States Map | 0 | - | 4.88 | 94,691 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,335 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,289 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,024 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,829 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,394 |
| U.S. States by Governor | 0 | - | 4.43 | 18,109 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,746 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,757 |
| The George Washington Presidency | 0 | - | 4.03 | 14,595 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,975 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,746 |
| Star-Spangled Banner Lyrics | 0 | - | 4.36 | 179,795 |
| History of California | 0 | - | 4.40 | 18,785 |
| California Counties | 0 | - | 4.39 | 120,053 |
| Colorado Counties | 0 | - | 4.45 | 26,885 |
| Florida Counties | 0 | - | 4.39 | 48,960 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,252 |
| State Quiz - Hawaii | 0 | - | 4.35 | 65,559 |
| Illinois Counties | 0 | - | 4.56 | 30,569 |
| History of Illinois | 0 | - | 4.24 | 11,249 |
| Indiana Counties | 0 | - | 4.46 | 29,124 |
| History of Maryland | 0 | - | 4.06 | 6,721 |
| History of Massachusetts | 0 | - | 4.14 | 8,420 |
| Michigan Counties | 0 | - | 4.63 | 30,731 |
| History of Michigan | 0 | - | 4.26 | 6,976 |
| History of New York | 0 | - | 4.36 | 16,404 |
| U.S. States that Border Missouri | 0 | - | 4.55 | 12,855 |
| New Jersey Counties | 0 | - | 4.57 | 30,540 |
| History of New Jersey | 0 | - | 4.38 | 7,301 |
| History of Ohio | 0 | - | 4.14 | 7,372 |
| History of Tennessee | 0 | - | 4.29 | 7,684 |
| Washington Counties | 0 | - | 4.78 | 27,071 |
| History of Washington State | 0 | - | 4.27 | 6,899 |
| Wisconsin Counties | 0 | - | 4.51 | 27,190 |
| Events in U.S. History | 0 | - | 4.41 | 28,788 |
| U.S. History A-Z #1 | 0 | - | 4.36 | 30,445 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,179 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,678 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,859 |
| U.S. States Bordering the Great Lakes | 0 | - | 4.55 | 18,292 |
| Top 10 Most Jewish U.S. States | 0 | - | 4.31 | 43,105 |
| States and Provinces that Touch the Great Lakes | 0 | - | 4.55 | 31,601 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 112,085 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,092 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,935 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,114 |
| U.S. States By Population | 0 | - | 4.92 | 154,007 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,048 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,786 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 66,683 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,739 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,146 |
| US States with an Empty Map | 0 | - | 5.00 | 627,704 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,965 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,414 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,757 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,466 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,989 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,640 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,731 |
| TV Shows by U.S. State | 0 | - | 4.33 | 47,525 |
| U.S. States by Alternate Nicknames | 0 | - | 4.24 | 42,973 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 23,114 |
| U.S. National Parks by State - Multiple Choice | 0 | - | 4.46 | 19,330 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,538 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,105 |
