| U.S. Presidents Quiz | 0 | - | 5.00 | 3,704,029 |
| American Revolution Decoder | 0 | - | 4.10 | 20,963 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,088 |
| The American Revolution | 0 | - | 4.52 | 54,268 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,311 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,335 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,803 |
| Vietnam War Countries | 0 | - | 4.82 | 94,302 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,644 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,548 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,107 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,584 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,724 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,660 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,827 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,616 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,901 |
| Presidential Middle Names | 0 | - | 4.41 | 60,350 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,406 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,639 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,460 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 193,761 |
| American Founding Fathers | 0 | - | 4.42 | 23,234 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,942 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,028 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,573 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 302,738 |
| Countries of the German Empire | 0 | - | 4.51 | 37,980 |
| United States Map Quiz | 0 | - | 4.98 | 4,161,584 |
| Arms Exports - United States | 0 | - | 4.77 | 62,469 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,799 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,382 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,270 |
| First Ladies of the United States | 0 | - | 4.28 | 85,696 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,968 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,236 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,193 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,225 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,985 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,059 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,414 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,846 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,057 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,772 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,519 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,147 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,719 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,386 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,449 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,712 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,816 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,985 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,698 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,549 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,033 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,614 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,769 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,553 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,689 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 244,482 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 332,662 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,910 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 628,882 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,658 |
| The George Washington Presidency | 0 | - | 4.03 | 14,553 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,740 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,658 |
| The John Adams Presidency | 0 | - | 4.12 | 8,753 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,940 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,747 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,330 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,696 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,107 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,863 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,611 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,302 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,236 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,308 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,997 |
| US States Quiz | 0 | - | 5.00 | 16,898,136 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,299 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,582 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 82,794 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,891 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,190 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,025 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,142 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,812 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,349 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,268 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,348 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,651 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,208 |
| Pixelated United States Map | 0 | - | 4.87 | 94,375 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,835 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,893 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,578 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,668 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,474 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,502 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,838 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,030 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 28,867 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,925 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,405 |
| Events in U.S. History | 0 | - | 4.41 | 28,692 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,123 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,126 |
| The American Civil War | 0 | - | 4.62 | 52,462 |
| Biggest Cities in the Confederate States in 1860 | 0 | - | 4.41 | 23,649 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,033 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,231 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,578 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,563 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,174 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,470 |
| U.S. States By Population | 0 | - | 4.92 | 153,654 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,593 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,527 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,741 |
| US States with an Empty Map | 0 | - | 5.00 | 625,368 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,634 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,290 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,421 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,267 |
| Draw All US State Borders | 0 | - | 4.99 | 138,110 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,713 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,185 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,880 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,341 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,624 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,371 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,862 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,555 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,668 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,232 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,362 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,524 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,945 |
| Countries of the Italian Empire | 0 | - | 4.21 | 27,711 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,481 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,211 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,977 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,385 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,650 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,567 |
| Prime Ministers of the UK | 0 | - | 4.95 | 439,605 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,012 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,716 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,316 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,397 |
| Friends A-Z | 0 | - | 4.46 | 40,474 |
| Rivers of the United States | 0 | - | 4.93 | 66,265 |
| Names of Generations | 0 | - | 4.09 | 45,079 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,267 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,567 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,404 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,246 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,715 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,176 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,766 |
| Movies with America in the Title | 0 | - | 4.17 | 28,771 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,464 |
| Stephen Curry Quiz | 0 | - | 4.37 | 67,029 |
| History of Florida | 0 | - | 4.45 | 9,832 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,108 |
| Hawaiian Islands | 0 | - | 4.83 | 42,750 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,192 |
| Harvard University | 0 | - | 4.15 | 8,301 |
| History of Texas | 0 | - | 4.43 | 14,642 |
| LeBron James Trivia | 0 | - | 4.01 | 171,075 |
| LeBron... or Kobe? | 0 | - | 4.04 | 70,076 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,353 |
| American History Quotes #1 | 0 | - | 4.37 | 96,068 |
| People on Money - United States | 0 | - | 4.31 | 63,355 |
| American History Quotes #2 | 0 | - | 4.38 | 41,426 |
| Old West History | 0 | - | 4.34 | 15,282 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,486 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,089 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,525 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,946 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,740 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,263 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,542,413 |
| U.S. State Flags | 0 | - | 4.88 | 170,904 |
| U.S. States that Border Canada | 0 | - | 4.91 | 185,249 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,455 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,429 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,095 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,233 |
| U.S. States Richer than Their Neighbors | 0 | - | 4.43 | 27,383 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,579 |
| Random U.S. States on a Map | 0 | - | 4.96 | 627,214 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,707 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,814 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,794 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,221 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,950 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,184 |
| Name a Valid U.S. President by Birth State | 0 | - | 4.60 | 9,787 |
