| U.S. Presidents Quiz | 0 | - | 5.00 | 3,731,729 |
| American Revolution Decoder | 0 | - | 4.12 | 21,004 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,933 |
| The American Revolution | 0 | - | 4.52 | 54,394 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,700 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,738 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 146,099 |
| Vietnam War Countries | 0 | - | 4.82 | 94,765 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,568 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,636 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 194,052 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,698 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,753 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.89 | 114,525 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,679 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,484 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,768 |
| Presidential Middle Names | 0 | - | 4.42 | 60,812 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,755 |
| Assassinated U.S. Presidents | 0 | - | 4.62 | 94,944 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,661 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.97 | 194,980 |
| American Founding Fathers | 0 | - | 4.42 | 23,297 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,031 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,260 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 235,465 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 304,307 |
| Countries of the German Empire | 0 | - | 4.51 | 38,314 |
| United States Map Quiz | 0 | - | 4.98 | 4,173,800 |
| Arms Exports - United States | 0 | - | 4.77 | 62,809 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,921 |
| U.S. Vice Presidents | 0 | - | 4.39 | 137,201 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,383 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,799 |
| First Ladies of the United States | 0 | - | 4.28 | 86,031 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,339 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,543 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,387 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,123 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.32 | 59,662 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,787 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,856 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,962 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,904 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 114,039 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,625 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,974 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,773 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,712 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,239 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,969 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,606 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,995 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,580 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 76,081 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,771 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 247,093 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 336,335 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,174 |
| Win the U.S. Presidential Election | 0 | - | 4.79 | 637,468 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,248 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.38 | 24,091 |
| The George Washington Presidency | 0 | - | 4.03 | 14,622 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,789 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,953 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,778 |
| The John Adams Presidency | 0 | - | 4.12 | 8,799 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 17,003 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,788 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,398 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,777 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,671 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,941 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,863 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,660 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 75,258 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,837 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,343 |
| US States Quiz | 0 | - | 5.00 | 17,025,720 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,915 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,582 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 86,114 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 66,033 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,037 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,743 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,139 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,063 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 98,173 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,720 |
| African Countries with the Most Christians | 0 | - | 4.94 | 76,232 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 62,118 |
| 10 Longest Rivers in the United States | 0 | - | 4.86 | 39,465 |
| Pixelated United States Map | 0 | - | 4.89 | 94,951 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,769 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,615 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,421 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,934 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,559 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,564 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,908 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,111 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 29,084 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,117 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,673 |
| Events in U.S. History | 0 | - | 4.41 | 28,863 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,222 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,508 |
| The American Civil War | 0 | - | 4.62 | 52,666 |
| Biggest Cities in the Confederate States in 1860 | 0 | - | 4.41 | 23,741 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,208 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 511,051 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,453 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,472 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,541 |
| U.S. States that Start with M | 0 | - | 4.94 | 188,590 |
| U.S. States By Population | 0 | - | 4.92 | 154,273 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,393 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,993 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,471 |
| US States with an Empty Map | 0 | - | 5.00 | 629,684 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,183 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,503 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,995 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,607 |
| Draw All US State Borders | 0 | - | 4.99 | 141,600 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,223 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 161,188 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,328 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,783 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,883 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,730 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,589 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 83,120 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 68,073 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,311 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,420 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,629 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,655 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 105,001 |
| Countries of the Italian Empire | 0 | - | 4.21 | 27,855 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,594 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,812 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,533 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 87,035 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,211 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,635 |
| Prime Ministers of the UK | 0 | - | 4.95 | 443,234 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,661 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 73,120 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,952 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.81 | 55,303 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 90,122 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,843 |
| Rivers of the United States | 0 | - | 4.93 | 66,798 |
| Names of Generations | 0 | - | 4.09 | 45,603 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,843 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,877 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,763 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,489 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,872 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,435 |
| Movies with America in the Title | 0 | - | 4.17 | 28,807 |
| Countries Closest to Alaska | 0 | - | 4.93 | 125,317 |
| Stephen Curry Quiz | 0 | - | 4.37 | 67,435 |
| History of Florida | 0 | - | 4.45 | 9,886 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,150 |
| Hawaiian Islands | 0 | - | 4.83 | 43,019 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,710 |
| Harvard University | 0 | - | 4.15 | 8,335 |
| History of Texas | 0 | - | 4.43 | 14,703 |
| LeBron James Trivia | 0 | - | 4.02 | 171,877 |
| LeBron... or Kobe? | 0 | - | 4.04 | 70,585 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,580 |
| American History Quotes #1 | 0 | - | 4.37 | 96,255 |
| People on Money - United States | 0 | - | 4.31 | 63,489 |
| American History Quotes #2 | 0 | - | 4.38 | 41,539 |
| Old West History | 0 | - | 4.34 | 15,309 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,633 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.11 | 52,401 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,539 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 20,000 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,809 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,368 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,558,732 |
| U.S. State Flags | 0 | - | 4.88 | 173,541 |
| U.S. States that Border Canada | 0 | - | 4.91 | 187,103 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,583 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,623 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,149 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,909 |
| U.S. States Richer than Their Neighbors | 0 | - | 4.43 | 27,464 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 50,295 |
| Random U.S. States on a Map | 0 | - | 4.96 | 631,315 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 71,030 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 126,058 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,716 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 93,005 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,288 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,547 |
| Name a Valid U.S. President by Birth State | 0 | - | 4.60 | 9,866 |
