| U.S. Presidents Quiz | 0 | - | 5.00 | 3,660,063 |
| American Revolution Decoder | 0 | - | 4.10 | 20,886 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,802 |
| The American Revolution | 0 | - | 4.52 | 54,077 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,901 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,741 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,352 |
| Vietnam War Countries | 0 | - | 4.83 | 93,696 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,569 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,386 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,103 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,879 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,502 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,331 |
| U.S. Vice Presidents | 0 | - | 4.41 | 135,167 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,048 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,628 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,091 |
| Presidential Middle Names | 0 | - | 4.41 | 59,765 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,814 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,902 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,196 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 192,680 |
| American Founding Fathers | 0 | - | 4.41 | 23,084 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,404 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,769 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,320 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 300,235 |
| Countries of the German Empire | 0 | - | 4.51 | 37,693 |
| United States Map Quiz | 0 | - | 4.98 | 4,143,697 |
| Arms Exports - United States | 0 | - | 4.70 | 54,422 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,113 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,172 |
| First Ladies of the United States | 0 | - | 4.28 | 85,284 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,824 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,123 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,432 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,019 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,848 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 218,764 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,695 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,700 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,145 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,415 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,371 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,039 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,487 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,751 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,782 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,947 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,304 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,025 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,936 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,024 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,249 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,469 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,759 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,952 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,339 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 241,270 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,583 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,564 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 619,505 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,489 |
| The George Washington Presidency | 0 | - | 4.03 | 14,482 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,666 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,523 |
| The John Adams Presidency | 0 | - | 4.12 | 8,683 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,882 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,689 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,233 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,617 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,503 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,784 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,383 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 65,880 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,152 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,706 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,554 |
| US States Quiz | 0 | - | 5.00 | 16,722,610 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,476 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,085 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,544 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,576 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,222 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,126 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,088 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,485 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,375 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,223 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,759 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,013 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,841 |
| Pixelated United States Map | 0 | - | 4.89 | 93,585 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,618 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,952 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,537 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,717 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,365 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,426 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,729 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,930 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,628 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,721 |
| Six Flags Over Texas | 0 | - | 4.79 | 63,044 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,011 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,555 |
| The American Civil War | 0 | - | 4.62 | 52,186 |
| Biggest Cities in the Confederate States in 1860 | 0 | - | 4.41 | 23,566 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,863 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 502,456 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,488 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,527 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,821 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,074 |
| U.S. States By Population | 0 | - | 4.92 | 152,476 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,525 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,947 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,706 |
| US States with an Empty Map | 0 | - | 5.00 | 619,539 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,953 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,069 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,642 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,803 |
| Draw All US State Borders | 0 | - | 4.99 | 134,052 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,962 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,981 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,139 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,562 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,107 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,715 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,167 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,996 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,898 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 94,883 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,087 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,617 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,847 |
| Countries of the Italian Empire | 0 | - | 4.21 | 27,570 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,332 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,456 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,195 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,603 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,920 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,505 |
| Prime Ministers of the UK | 0 | - | 4.96 | 435,128 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,302 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,330 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,787 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,351 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,544 |
| Friends A-Z | 0 | - | 4.46 | 40,176 |
| Rivers of the United States | 0 | - | 4.93 | 65,598 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,507 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,165 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 80,936 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 74,950 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,505 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,541 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,506 |
| Movies with America in the Title | 0 | - | 4.17 | 28,724 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,425 |
| Stephen Curry Quiz | 0 | - | 4.36 | 66,429 |
| History of Florida | 0 | - | 4.45 | 9,771 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,065 |
| Hawaiian Islands | 0 | - | 4.83 | 42,463 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,516 |
| Harvard University | 0 | - | 4.15 | 8,269 |
| History of Texas | 0 | - | 4.43 | 14,561 |
| LeBron James Trivia | 0 | - | 4.01 | 170,020 |
| LeBron... or Kobe? | 0 | - | 4.04 | 69,291 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,112 |
| American History Quotes #1 | 0 | - | 4.37 | 95,721 |
| People on Money - United States | 0 | - | 4.31 | 63,224 |
| American History Quotes #2 | 0 | - | 4.38 | 41,241 |
| Old West History | 0 | - | 4.33 | 15,231 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,272 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,756 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,496 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,859 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,654 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,095 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,521,083 |
| U.S. State Flags | 0 | - | 4.89 | 167,680 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,758 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,272 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,130 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 40,985 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,963 |
| U.S. States Richer than Their Neighbors | 0 | - | 4.43 | 27,228 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,677 |
| Random U.S. States on a Map | 0 | - | 4.96 | 622,150 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,316 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,988 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,797 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,191 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,599 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,720 |
| Name a Valid U.S. President by Birth State | 0 | - | 4.60 | 9,683 |
| Arms Exports - Russia | 0 | - | 4.48 | 24,767 |
