| Deadliest U.S. Wars | 0 | - | 4.89 | 191,941 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,730,256 |
| The Vietnam War | 0 | - | 4.44 | 35,686 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,817 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 510,832 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,389 |
| Countries in World War I | 0 | - | 4.88 | 229,400 |
| Hawaiian Islands | 0 | - | 4.83 | 42,998 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,567 |
| U.S. State Flags | 0 | - | 4.89 | 173,384 |
| Battle to Country | 0 | - | 4.91 | 54,090 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,155 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,869 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,647 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,445 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,738 |
| Presidential Middle Names | 0 | - | 4.42 | 60,794 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,734 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,933 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,654 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,250 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,365 |
| Countries in World War II | 0 | - | 4.54 | 920,108 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,242 |
| Countries Italy Declared War On | 0 | - | 4.74 | 47,941 |
| The Iraq War | 0 | - | 4.47 | 15,716 |
| United States Map Quiz | 0 | - | 4.98 | 4,173,215 |
| American Monopoly Board - Map Quiz | 0 | - | 4.52 | 21,272 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 636,971 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,642 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,973 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,635 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,248 |
| Important Cities in WWII | 0 | - | 4.42 | 94,260 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,363 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,155 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,874 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,820 |
| U.S. Vice Presidents | 0 | - | 4.39 | 137,146 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,378 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,794 |
| First Ladies of the United States | 0 | - | 4.28 | 86,016 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,332 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,851 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,523 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,385 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,117 |
| Harvard University | 0 | - | 4.15 | 8,334 |
| Las Vegas Casinos | 0 | - | 4.13 | 38,159 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,345 |
| U.S. States that Border Canada | 0 | - | 4.91 | 187,000 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,960 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,205 |
| The Persian Gulf War | 0 | - | 4.02 | 8,490 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,949 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,951 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 114,032 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 76,042 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,308 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,864 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,745 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,481 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,984 |
| American Founding Fathers | 0 | - | 4.42 | 23,278 |
| Florida Counties | 0 | - | 4.41 | 49,192 |
| History of Florida | 0 | - | 4.45 | 9,877 |
| Georgia Counties | 0 | - | 4.52 | 50,164 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 75,169 |
| New York Counties | 0 | - | 4.65 | 51,311 |
| Texas Counties | 0 | - | 4.56 | 78,090 |
| History of Texas | 0 | - | 4.43 | 14,690 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,319 |
| North Carolina Counties | 0 | - | 4.55 | 53,824 |
| Ohio Counties | 0 | - | 4.48 | 46,371 |
| Pennsylvania Counties | 0 | - | 4.50 | 53,513 |
| Virginia Counties | 0 | - | 4.45 | 33,543 |
| West Virginia Counties | 0 | - | 4.63 | 34,063 |
| American History Quotes #1 | 0 | - | 4.37 | 96,233 |
| American History Quotes #2 | 0 | - | 4.38 | 41,521 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,355 |
| US States Quiz | 0 | - | 5.00 | 17,018,200 |
| States and Provinces that Touch the Great Lakes | 0 | - | 4.58 | 35,400 |
| Major U.S. Rivers with State Names | 0 | - | 4.49 | 39,888 |
| Satellite Images - U.S. States | 0 | - | 4.54 | 45,400 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,575 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 42,205 |
| Cartoon Versions of U.S. States | 0 | - | 4.77 | 64,168 |
| U.S. States by Nickname | 0 | - | 4.57 | 69,780 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,878 |
| Monarchies of Europe | 0 | - | 4.90 | 99,014 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,705 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,524 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,210 |
| Monarchies of Asia | 0 | - | 4.97 | 71,592 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,341 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,938 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,579 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,540 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,714 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 246,942 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 336,097 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,174 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,788 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,776 |
| The John Adams Presidency | 0 | - | 4.12 | 8,798 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,784 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,940 |
| California Counties Map Quiz | 0 | - | 4.36 | 34,632 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,807 |
| Word Puzzles - U.S. States | 0 | - | 3.76 | 42,612 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,859 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,036 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,922 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,939 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,255 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,203 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,080 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,006 |
| Name the English Monarchs | 0 | - | 4.91 | 507,243 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,807 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,670 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,521 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,896 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,679 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,465 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,567 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 95,632 |
| Puerto Rico Trivia | 0 | - | 4.52 | 12,078 |
| Top U.S. Universities | 0 | - | 4.15 | 145,963 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,428 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 53,099 |
| Pixelated United States Map | 0 | - | 4.89 | 94,912 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,698 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,566 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,364 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,910 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,864 |
| U.S. States by Governor | 0 | - | 4.43 | 18,121 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,782 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,797 |
| The George Washington Presidency | 0 | - | 4.03 | 14,621 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 17,000 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,773 |
| Star-Spangled Banner Lyrics | 0 | - | 4.36 | 179,954 |
| History of California | 0 | - | 4.40 | 18,801 |
| California Counties | 0 | - | 4.39 | 120,510 |
| Colorado Counties | 0 | - | 4.45 | 27,006 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,267 |
| State Quiz - Hawaii | 0 | - | 4.35 | 65,745 |
| Illinois Counties | 0 | - | 4.56 | 30,712 |
| History of Illinois | 0 | - | 4.24 | 11,259 |
| Indiana Counties | 0 | - | 4.46 | 29,254 |
| History of Maryland | 0 | - | 4.06 | 6,737 |
| History of Massachusetts | 0 | - | 4.14 | 8,438 |
| Michigan Counties | 0 | - | 4.63 | 30,929 |
| History of Michigan | 0 | - | 4.26 | 6,987 |
| History of New York | 0 | - | 4.36 | 16,427 |
| U.S. States that Border Missouri | 0 | - | 4.55 | 12,872 |
| New Jersey Counties | 0 | - | 4.57 | 30,694 |
| History of New Jersey | 0 | - | 4.38 | 7,316 |
| History of Ohio | 0 | - | 4.14 | 7,388 |
| History of Tennessee | 0 | - | 4.29 | 7,690 |
| Washington Counties | 0 | - | 4.75 | 27,195 |
| History of Washington State | 0 | - | 4.27 | 6,918 |
| Wisconsin Counties | 0 | - | 4.51 | 27,385 |
| Events in U.S. History | 0 | - | 4.41 | 28,850 |
| U.S. History A-Z #1 | 0 | - | 4.36 | 30,569 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,214 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,712 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,166 |
| U.S. States Bordering the Great Lakes | 0 | - | 4.55 | 18,324 |
| Top 10 Most Jewish U.S. States | 0 | - | 4.31 | 43,188 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,407 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,438 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,490 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,530 |
| U.S. States By Population | 0 | - | 4.92 | 154,231 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,349 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,964 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 66,751 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,901 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,434 |
| US States with an Empty Map | 0 | - | 5.00 | 629,462 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,157 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,488 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,964 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,588 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,189 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,707 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,781 |
| TV Shows by U.S. State | 0 | - | 4.33 | 47,570 |
| U.S. States by Alternate Nicknames | 0 | - | 4.24 | 43,003 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 23,150 |
| U.S. National Parks by State - Multiple Choice | 0 | - | 4.46 | 19,358 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 161,159 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,307 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,761 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,869 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,712 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 65,048 |
