| U.S. Presidents Quiz | 0 | - | 5.00 | 3,719,445 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,200 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,398 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,545 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,369 |
| Vietnam War Countries | 0 | - | 4.82 | 94,514 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,788 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,217 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,119 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,465 |
| Presidential Middle Names | 0 | - | 4.41 | 60,623 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,578 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,830 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,589 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 194,243 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.30 | 51,624 |
| American Founding Fathers | 0 | - | 4.42 | 23,264 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,587 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,161 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,468 |
| The American Revolution | 0 | - | 4.52 | 54,326 |
| Biggest Cities in the Confederate States in 1860 | 0 | - | 4.41 | 23,689 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,212 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,230 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 235,067 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 303,528 |
| Countries of the German Empire | 0 | - | 4.51 | 38,119 |
| United States Map Quiz | 0 | - | 4.98 | 4,168,148 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,582 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,027 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,801 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,342 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,732 |
| First Ladies of the United States | 0 | - | 4.28 | 85,876 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 24,038 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,287 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,395 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,324 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,071 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,078 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,317 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,528 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,140 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,921 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,928 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,585 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,203 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,887 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,762 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,049 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,552,588 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,110 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,488 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,782 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,349 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,623 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,184 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,819 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,321 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,870 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,675 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,052 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 633,741 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,958 |
| The George Washington Presidency | 0 | - | 4.03 | 14,593 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,767 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,730 |
| The John Adams Presidency | 0 | - | 4.12 | 8,777 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,975 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,765 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,367 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,744 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,903 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,770 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,507 |
| Movies with America in the Title | 0 | - | 4.17 | 28,785 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,823 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,608 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,180 |
| US States Quiz | 0 | - | 5.00 | 16,965,298 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.70 | 1,396,998 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,302 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,108 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,758 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,521 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,650 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,409 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,624 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,485 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,351 |
| Countries that Beat Australia | 0 | - | 4.92 | 93,304 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,339 |
| Pixelated United States Map | 0 | - | 4.88 | 94,671 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,312 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,270 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,002 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,361 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,516 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,539 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,874 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,078 |
| U.S. President Scramble | 0 | - | 4.40 | 117,360 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,549 |
| Events in U.S. History | 0 | - | 4.41 | 28,786 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,177 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,337 |
| The American Civil War | 0 | - | 4.62 | 52,588 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,832 |
| U.S. States by Clue #1 | 0 | - | 4.51 | 39,340 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 112,055 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,070 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,726 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,075 |
| U.S. States By Population | 0 | - | 4.92 | 153,987 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,022 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,773 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,133 |
| US States with an Empty Map | 0 | - | 5.00 | 627,600 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,959 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,314 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,742 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 49,232 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,456 |
| Draw All US State Borders | 0 | - | 4.99 | 140,030 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,976 |
| Tourist Attractions by U.S. State | 0 | - | 4.46 | 62,675 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,520 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,091 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,578 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,768 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,569 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,312 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,941 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,907 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,817 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,925 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,286 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,465 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,121 |
| Countries of the Italian Empire | 0 | - | 4.21 | 27,797 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,545 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,049 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,524 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,288 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,236 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,275 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,732 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,951 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,062 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,392 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,972 |
| Countries that Beat China | 0 | - | 4.85 | 116,537 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,753 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,797 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,587 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,293 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.96 | 172,469 |
| Rivers of the United States | 0 | - | 4.93 | 66,559 |
| Names of Generations | 0 | - | 4.09 | 45,409 |
| American Junk Food Brands #1 | 0 | - | 3.84 | 61,010 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,562 |
| U.S. Senators by State | 0 | - | 4.44 | 40,074 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,737 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,593 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,372 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,806 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,890 |
| Free in the Answers | 0 | - | 4.08 | 51,685 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,937 |
| States that Beat California | 0 | - | 4.54 | 63,809 |
| Stephen Curry Quiz | 0 | - | 4.37 | 67,238 |
| History of Florida | 0 | - | 4.45 | 9,866 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,131 |
| Hawaiian Islands | 0 | - | 4.83 | 42,877 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,475 |
| Harvard University | 0 | - | 4.15 | 8,319 |
| States that Beat New York | 0 | - | 4.50 | 45,216 |
| History of Texas | 0 | - | 4.43 | 14,678 |
| States that Beat Texas | 0 | - | 4.58 | 44,472 |
| LeBron James Trivia | 0 | - | 4.01 | 171,446 |
| LeBron... or Kobe? | 0 | - | 4.04 | 70,362 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,469 |
| American History Quotes #1 | 0 | - | 4.37 | 96,170 |
| People on Money - United States | 0 | - | 4.31 | 63,410 |
| American History Quotes #2 | 0 | - | 4.38 | 41,486 |
| Old West History | 0 | - | 4.34 | 15,292 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,566 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,179 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,530 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,973 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,767 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,318 |
| U.S. State Flags | 0 | - | 4.89 | 172,241 |
| U.S. States that Border Canada | 0 | - | 4.91 | 186,257 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,532 |
| U.S. States by Emoji | 0 | - | 4.48 | 101,252 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 42,124 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,966 |
| Random U.S. States on a Map | 0 | - | 4.96 | 629,273 |
| Random Point on Land to US State | 0 | - | 4.63 | 69,624 |
