| U.S. Presidents Quiz | 0 | - | 5.00 | 3,729,171 |
| The American Revolution | 0 | - | 4.52 | 54,378 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,663 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 510,651 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,797 |
| Hawaiian Islands | 0 | - | 4.83 | 42,990 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,553 |
| U.S. State Flags | 0 | - | 4.89 | 173,267 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,481 |
| The Iraq War | 0 | - | 4.47 | 15,712 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,835 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,622 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,426 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,715 |
| Presidential Middle Names | 0 | - | 4.42 | 60,784 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,726 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,926 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,647 |
| The American Civil War | 0 | - | 4.62 | 52,646 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,360 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,572 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,632 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 98,080 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,592 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,640 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,237 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,916 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,343 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,477 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,603 |
| The Persian Gulf War | 0 | - | 4.02 | 8,489 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 73,080 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,895 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 90,056 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,790 |
| Hindu Countries | 0 | - | 4.86 | 50,634 |
| United States Map Quiz | 0 | - | 4.98 | 4,172,794 |
| American Monopoly Board - Map Quiz | 0 | - | 4.52 | 21,270 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,154 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,871 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 636,665 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,741 |
| U.S. Vice Presidents | 0 | - | 4.39 | 137,120 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,377 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,792 |
| First Ladies of the United States | 0 | - | 4.28 | 86,012 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,329 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,515 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,382 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,114 |
| Harvard University | 0 | - | 4.15 | 8,333 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,633 |
| Top 10 Most Jewish U.S. States | 0 | - | 4.31 | 43,177 |
| U.S. States that Border Canada | 0 | - | 4.91 | 186,906 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 23,146 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,959 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,098 |
| Asia Map Quiz | 0 | - | 4.99 | 926,167 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 51,253 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 83,496 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,554 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,647 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,302 |
| Arms Exports - United States | 0 | - | 4.77 | 62,777 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,856 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,732 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,789 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,940 |
| Florida Counties | 0 | - | 4.41 | 49,154 |
| Georgia Counties | 0 | - | 4.52 | 50,151 |
| New York Counties | 0 | - | 4.65 | 51,267 |
| Texas Counties | 0 | - | 4.56 | 78,058 |
| North Carolina Counties | 0 | - | 4.55 | 53,802 |
| Ohio Counties | 0 | - | 4.48 | 46,275 |
| Pennsylvania Counties | 0 | - | 4.50 | 53,484 |
| Virginia Counties | 0 | - | 4.45 | 33,472 |
| West Virginia Counties | 0 | - | 4.63 | 34,060 |
| Satellite Images - U.S. States | 0 | - | 4.54 | 45,391 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,573 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 42,195 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,633 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,731 |
| Cartoon Versions of U.S. States | 0 | - | 4.77 | 64,160 |
| U.S. States by Nickname | 0 | - | 4.57 | 69,759 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,195 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,652 |
| Flags of Asia Quiz | 0 | - | 4.99 | 621,384 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 58,305 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 100,074 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,387,766 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,935 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,915 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 114,020 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 76,027 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,473 |
| History of Florida | 0 | - | 4.45 | 9,875 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 75,125 |
| History of Texas | 0 | - | 4.43 | 14,689 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,307 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,351 |
| US States Quiz | 0 | - | 5.00 | 17,012,650 |
| States and Provinces that Touch the Great Lakes | 0 | - | 4.58 | 35,384 |
| Major U.S. Rivers with State Names | 0 | - | 4.49 | 39,883 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,653 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,493 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,205 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,881 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,658 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 100,029 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 109,262 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.90 | 106,992 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,950 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,419 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 136,214 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 137,685 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,240 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,846 |
| Monarchies of Asia | 0 | - | 4.97 | 71,568 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,326 |
| Countries of the Middle East | 0 | - | 4.96 | 203,148 |
| Puerto Rico Trivia | 0 | - | 4.52 | 12,076 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,553 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,505 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,668 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 246,833 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 335,970 |
| Pixelated United States Map | 0 | - | 4.89 | 94,885 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,663 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,531 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,168 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,133 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,607 |
| The George Washington Presidency | 0 | - | 4.03 | 14,619 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,786 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,766 |
| The John Adams Presidency | 0 | - | 4.12 | 8,796 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,999 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,783 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,772 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,938 |
| Star-Spangled Banner Lyrics | 0 | - | 4.36 | 179,941 |
| California Counties Map Quiz | 0 | - | 4.36 | 34,627 |
| California Counties | 0 | - | 4.39 | 120,470 |
| Colorado Counties | 0 | - | 4.45 | 26,987 |
| State Quiz - Hawaii | 0 | - | 4.35 | 65,716 |
| Illinois Counties | 0 | - | 4.56 | 30,704 |
| Indiana Counties | 0 | - | 4.46 | 29,240 |
| Michigan Counties | 0 | - | 4.63 | 30,921 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,784 |
| U.S. States that Border Missouri | 0 | - | 4.55 | 12,872 |
| Las Vegas Casinos | 0 | - | 4.13 | 38,156 |
| New Jersey Counties | 0 | - | 4.57 | 30,682 |
| Washington Counties | 0 | - | 4.75 | 27,188 |
| Wisconsin Counties | 0 | - | 4.51 | 27,351 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,458 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,142 |
| Word Puzzles - U.S. States | 0 | - | 3.76 | 42,607 |
| U.S. States Bordering the Great Lakes | 0 | - | 4.55 | 18,321 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,376 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,407 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,456 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,491 |
| U.S. States By Population | 0 | - | 4.92 | 154,214 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,324 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,944 |
| US States with an Empty Map | 0 | - | 5.00 | 629,271 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,143 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,810 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,933 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,575 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,167 |
| TV Shows by U.S. State | 0 | - | 4.33 | 47,565 |
| U.S. States by Alternate Nicknames | 0 | - | 4.24 | 43,000 |
| Books by U.S. State | 0 | - | 4.20 | 14,037 |
| U.S. National Parks by State - Multiple Choice | 0 | - | 4.46 | 19,357 |
| Corporations by U.S. State - Multiple Choice | 0 | - | 4.11 | 10,243 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 161,133 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,294 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,736 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,856 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,697 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 68,030 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,351 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,895 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,377 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,204 |
| Countries Italy Declared War On | 0 | - | 4.74 | 47,524 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,040 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,959 |
| Prime Ministers of the UK | 0 | - | 4.95 | 442,866 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,794 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,732 |
| Top 10 Richest Countries in Asia | 0 | - | 4.69 | 106,722 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,890 |
| Countries Closest to the Persian Gulf | 0 | - | 4.93 | 83,760 |
| Qatar Country Quiz | 0 | - | 4.86 | 31,742 |
| Countries Bordering Iran | 0 | - | 4.83 | 96,112 |
| Countries that Border Iraq | 0 | - | 4.97 | 109,161 |
| Countries Closest to Turkey | 0 | - | 4.96 | 126,984 |
| Countries Bordering Turkey | 0 | - | 4.98 | 117,934 |
