| U.S. Presidents Quiz | 0 | - | 5.00 | 3,649,686 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,145 |
| The American Civil War | 0 | - | 4.62 | 52,103 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,332 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,334 |
| Hawaiian Islands | 0 | - | 4.83 | 42,410 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,066 |
| U.S. State Flags | 0 | - | 4.89 | 166,766 |
| Which City in Canada? | 0 | - | 4.82 | 56,617 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,050 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,417 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 87,944 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,759 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,863 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,380 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,925 |
| Presidential Middle Names | 0 | - | 4.41 | 59,645 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,678 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,757 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,146 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,220 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,574 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,411 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,712 |
| American History Quotes #1 | 0 | - | 4.37 | 95,660 |
| American History Quotes #2 | 0 | - | 4.38 | 41,216 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,032 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 617,566 |
| The Vietnam War | 0 | - | 4.43 | 35,278 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,359 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,155 |
| First Ladies of the United States | 0 | - | 4.28 | 85,201 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,101 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,385 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,193 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,988 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,819 |
| Valid Answer - U.S. History | 0 | - | 4.24 | 22,435 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,134 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,673 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,737 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,979 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,277 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,873 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,197 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,349 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,781 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 34,868 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,058 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 80,824 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 74,871 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,645 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,615 |
| American Founding Fathers | 0 | - | 4.41 | 23,064 |
| California... or Florida? | 0 | - | 4.61 | 50,914 |
| Georgia Counties | 0 | - | 4.50 | 49,033 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 72,982 |
| New York Counties | 0 | - | 4.64 | 49,843 |
| Texas Counties | 0 | - | 4.55 | 75,978 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,443 |
| North Carolina Counties | 0 | - | 4.53 | 52,652 |
| Ohio Counties | 0 | - | 4.47 | 45,337 |
| Pennsylvania Counties | 0 | - | 4.48 | 52,038 |
| Virginia Counties | 0 | - | 4.45 | 32,896 |
| West Virginia Counties | 0 | - | 4.61 | 33,499 |
| People on Money - United States | 0 | - | 4.31 | 63,197 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,702 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,063 |
| US States Quiz | 0 | - | 5.00 | 16,683,103 |
| Major U.S. Rivers with State Names | 0 | - | 4.49 | 39,339 |
| Satellite Images - U.S. States | 0 | - | 4.53 | 44,893 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,209 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 41,730 |
| Cartoon Versions of U.S. States | 0 | - | 4.77 | 63,499 |
| Random Point on Land to US State | 0 | - | 4.57 | 68,468 |
| U.S. States by Nickname | 0 | - | 4.57 | 69,256 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,203 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,806 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,314 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,268 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,009 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,927 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,261 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,733 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 90,997 |
| Name a Valid African Country | 0 | - | 4.98 | 152,836 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,235 |
| Name the U.S. National Parks | 0 | - | 4.85 | 58,251 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,554 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,055 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,617 |
| Cities by Wikipedia Descriptions #2 | 0 | - | 4.53 | 38,900 |
| U.S. Cities by Wikipedia Descriptions | 0 | - | 4.48 | 34,048 |
| American Monopoly Board - Map Quiz | 0 | - | 4.52 | 21,125 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 68,670 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,488 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,450 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,653 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,448 |
| The John Adams Presidency | 0 | - | 4.12 | 8,673 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,678 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,765 |
| California Counties Map Quiz | 0 | - | 4.36 | 34,324 |
| Harvard University | 0 | - | 4.15 | 8,258 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,554 |
| Events in U.S. History | 0 | - | 4.40 | 28,453 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,097 |
| Smaller U.S. Cities You May Know #1 | 0 | - | 4.45 | 19,607 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,274 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,011 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,941 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,378 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,062 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,688 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,138 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,485 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,584 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,463 |
| Name a Valid Asian Country | 0 | - | 4.98 | 119,955 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,612 |
| Which City in Latin America? | 0 | - | 4.63 | 46,824 |
| Puerto Rico Trivia | 0 | - | 4.51 | 11,931 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,776 |
| Pixelated United States Map | 0 | - | 4.89 | 93,358 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,327 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,745 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,300 |
| Which City in the United States? | 0 | - | 4.21 | 56,633 |
| 75 Americans Named John | 0 | - | 4.41 | 23,818 |
| The George Washington Presidency | 0 | - | 4.03 | 14,469 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,862 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,602 |
| Star-Spangled Banner Lyrics | 0 | - | 4.36 | 178,447 |
| California Counties | 0 | - | 4.39 | 118,012 |
| Colorado Counties | 0 | - | 4.44 | 26,298 |
| Florida Counties | 0 | - | 4.39 | 48,065 |
| State Quiz - Hawaii | 0 | - | 4.35 | 64,902 |
| Illinois Counties | 0 | - | 4.56 | 30,029 |
| Indiana Counties | 0 | - | 4.46 | 28,592 |
| Michigan Counties | 0 | - | 4.63 | 30,010 |
| U.S. States that Border Missouri | 0 | - | 4.55 | 12,726 |
| Las Vegas Casinos | 0 | - | 4.12 | 37,959 |
| New Jersey Counties | 0 | - | 4.56 | 29,901 |
| Six Flags Over Texas | 0 | - | 4.79 | 62,980 |
| Washington Counties | 0 | - | 4.78 | 26,508 |
| Wisconsin Counties | 0 | - | 4.51 | 26,508 |
| U.S. History A-Z #1 | 0 | - | 4.39 | 29,225 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,979 |
| Animals in American History | 0 | - | 4.20 | 27,902 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,489 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,613 |
| U.S. States by Clue #1 | 0 | - | 4.52 | 38,541 |
| U.S. States Bordering the Great Lakes | 0 | - | 4.54 | 18,176 |
| Top 10 Most Jewish U.S. States | 0 | - | 4.31 | 42,704 |
| States and Provinces that Touch the Great Lakes | 0 | - | 4.54 | 28,840 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,248 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,301 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,515 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,791 |
| U.S. States By Population | 0 | - | 4.92 | 152,277 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,287 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,791 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,478 |
| US States with an Empty Map | 0 | - | 5.00 | 618,272 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,848 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,007 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,462 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,723 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,796 |
| TV Shows by U.S. State | 0 | - | 4.33 | 47,275 |
| U.S. States by Alternate Nicknames | 0 | - | 4.24 | 42,800 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 22,900 |
| U.S. National Parks by State - Multiple Choice | 0 | - | 4.46 | 19,191 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,789 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,040 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,411 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,035 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,622 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 100,998 |
| U.S. States with the Most Immigrants | 0 | - | 4.84 | 81,883 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,762 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,801 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,575 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,814 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,880 |
| Which City in Europe? | 0 | - | 4.83 | 106,562 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,382 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,799 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,495 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,431 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,554 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,407 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,291 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,609 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,772 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,107 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,191 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 19,846 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,150 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,209 |
