| First Names of U.S. Presidents | 0 | - | 4.86 | 351,400 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,142,533 |
| U.S. Presidents by Picture | 0 | - | 4.86 | 392,433 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 165,611 |
| Play-Doh Presidents | 0 | - | 5.00 | 74,028 |
| U.S. Presidential Quotes | 0 | - | 4.35 | 42,618 |
| Random U.S. Presidents by Picture | 0 | - | 4.37 | 59,371 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 37,355 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.97 | 177,168 |
| U.S. Vice Presidents | 0 | - | 4.42 | 118,401 |
| U.S. Presidential Trivia #1 | 0 | - | 4.51 | 96,329 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.57 | 80,671 |
| U.S. Presidential Trivia #2 | 0 | - | 4.51 | 39,337 |
| Assassinated U.S. Presidents | 0 | - | 4.54 | 79,578 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 33,455 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 217,525 |
| The Bill Clinton Presidency | 0 | - | 4.18 | 30,110 |
| The George H. W. Bush Presidency | 0 | - | 4.35 | 20,498 |
| The Ronald Reagan Presidency | 0 | - | 4.25 | 23,541 |
| The Richard Nixon Presidency | 0 | - | 4.10 | 20,752 |
| The Jimmy Carter Presidency | 0 | - | 4.39 | 17,985 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.44 | 276,985 |
| Name a Valid U.S. President #2 | 0 | - | 4.52 | 60,247 |
| The John F. Kennedy Presidency | 0 | - | 4.45 | 40,816 |
| Governors Who Ran For President | 0 | - | 4.46 | 18,841 |
| U.S. Presidents by Event | 0 | - | 4.57 | 28,966 |
| First Ladies of the United States | 0 | - | 4.27 | 79,537 |
| Presidential Middle Names | 0 | - | 4.36 | 55,942 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 24,778 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.31 | 62,928 |
| Random U.S. Vice President to President | 0 | - | 4.57 | 23,080 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.62 | 13,780 |
| Add a Letter - Make a U.S. President | 0 | - | 4.66 | 21,794 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.41 | 22,452 |
| U.S. Presidents Who Died in Office | 0 | - | 4.72 | 31,087 |
| U.S. President Scramble | 0 | - | 4.39 | 90,347 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.46 | 20,757 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.20 | 29,898 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 44,944 |
| U.S. Presidents by State | 0 | - | 4.29 | 65,796 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 25,524 |
| The George W. Bush Presidency | 0 | - | 4.06 | 30,846 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 12,819 |
| The John Adams Presidency | 0 | - | 4.10 | 7,929 |
| The Theodore Roosevelt Presidency | 0 | - | 4.30 | 7,111 |
| U.S. Vice Presidential Trivia | 0 | - | 4.29 | 11,288 |
| The Barack Obama Presidency | 0 | - | 4.17 | 23,502 |
| Deadliest U.S. Wars | 0 | - | 4.82 | 157,150 |
| Name a Valid U.S. President by Birth State | 0 | - | 4.51 | 8,390 |
| Harry Potter Last Names | 0 | - | 4.70 | 886,503 |
| Presidential Actors | 0 | - | 4.33 | 17,718 |
| The George Washington Presidency | 0 | - | 4.02 | 13,584 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.32 | 10,664 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.31 | 16,744 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.32 | 20,449 |
| Six Flags Over Texas | 0 | - | 4.84 | 58,475 |
| U.S. Map with Random Merged States | 0 | - | 4.95 | 271,473 |
| Vatican City Country Quiz | 0 | - | 4.49 | 38,635 |
| United States Map Quiz | 0 | - | 4.98 | 3,885,519 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 346,463 |
| Most-Visited Countries by Popes | 0 | - | 4.67 | 62,596 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 107,357 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 115,668 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 106,131 |
| George Bush... or George Bush | 0 | - | 3.89 | 7,693 |
| Random U.S. States on a Map | 0 | - | 4.95 | 480,905 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 201,570 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.91 | 48,127 |
| Countries of the Soviet Union | 0 | - | 4.98 | 183,997 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 74,035 |
| Biggest Spanish Empire Countries | 0 | - | 4.90 | 92,405 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 98,734 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.84 | 54,199 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 92,635 |
| U.S. State Border Crossings | 0 | - | 4.96 | 81,750 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 220,819 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.82 | 32,633 |
| Total United States Immigration by Country | 0 | - | 4.90 | 96,026 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 64,776 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 145,447 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.95 | 182,636 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,235 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 67,345 |
| Win the U.S. Presidential Election | 0 | - | 4.79 | 500,876 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.75 | 19,226 |
| U.S. Presidents True or False | 0 | - | 3.94 | 14,560 |
| The Kennedy Family | 0 | - | 3.85 | 13,209 |
| Cities and Towns of Massachusetts | 0 | - | 4.89 | 59,457 |
| US States Quiz | 0 | - | 5.00 | 14,609,841 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 338,645 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 132,767 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 61,910 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.93 | 48,326 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 57,970 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 45,893 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.88 | 50,434 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 74,851 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 89,702 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 221,140 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 60,033 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 66,844 |
| Countries Bordering China Since 1914 | 0 | - | 4.91 | 87,242 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 77,209 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 66,940 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 34,746 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.95 | 270,788 |
| Pixelated United States Map | 0 | - | 4.90 | 81,461 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 92,218 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 77,785 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 123,620 |
| Countries that Beat the United States | 0 | - | 4.92 | 144,120 |
| American Revolution Decoder | 0 | - | 4.12 | 19,940 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.84 | 21,171 |
| U.S. History for Dummies | 0 | - | 4.50 | 64,851 |
| The American Civil War | 0 | - | 4.72 | 48,726 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 99,577 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 456,632 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 95,291 |
| 10 Southernmost U.S. States | 0 | - | 4.84 | 98,400 |
| U.S. States with Short Names | 0 | - | 4.87 | 128,614 |
| U.S. States that Start with M | 0 | - | 4.91 | 149,422 |
| U.S. States By Population | 0 | - | 4.90 | 129,359 |
| U.S. States that Start with N | 0 | - | 4.95 | 154,577 |
| U.S. States with Longest Names | 0 | - | 4.84 | 35,608 |
| Louisiana Purchase with a Map | 0 | - | 4.94 | 35,627 |
| US States with an Empty Map | 0 | - | 5.00 | 549,804 |
| 10 Northernmost U.S. States | 0 | - | 4.88 | 72,751 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 77,180 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 57,963 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 55,357 |
| U.S. States with the Longest International Borders | 0 | - | 4.81 | 40,063 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 144,668 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 167,388 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 98,705 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 88,734 |
| U.S. States with the Most Immigrants | 0 | - | 4.86 | 72,835 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 70,500 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 115,140 |
| Countries that Bordered the USSR | 0 | - | 4.94 | 141,635 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 87,730 |
| Biggest Roman Empire Countries | 0 | - | 4.88 | 81,561 |
| Shakespearean Phrases | 0 | - | 4.55 | 33,838 |
| Random Asian Countries on a Map | 0 | - | 4.96 | 151,030 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 70,940 |
| The Vietnam War | 0 | - | 4.41 | 32,614 |
| Random African Countries on a Map | 0 | - | 4.99 | 247,686 |
| Rivers of the United States | 0 | - | 4.93 | 49,170 |
| Countries Closest to United States A-Z | 0 | - | 4.86 | 106,474 |
| U.S. Senators by State | 0 | - | 4.49 | 35,929 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.43 | 68,670 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.67 | 73,282 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.31 | 10,286 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.52 | 69,657 |
| The American Revolution | 0 | - | 4.55 | 51,511 |
| Countries Closest to Alaska | 0 | - | 4.92 | 98,400 |
| Stephen Curry Quiz | 0 | - | 4.34 | 57,788 |
| History of Florida | 0 | - | 4.44 | 8,682 |
| The Life of Martin Luther King Jr. | 0 | - | 4.79 | 10,313 |
| Hawaiian Islands | 0 | - | 4.85 | 38,325 |
| Hawaiian Islands Map Quiz | 0 | - | 4.88 | 20,922 |
| Countries Closest to Maine | 0 | - | 4.84 | 58,482 |
| History of Texas | 0 | - | 4.41 | 13,433 |
| LeBron... or Kobe? | 0 | - | 4.15 | 52,612 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 57,670 |
| American History Quotes #1 | 0 | - | 4.40 | 91,131 |
| People on Money - United States | 0 | - | 4.31 | 61,662 |
| American History Quotes #2 | 0 | - | 4.34 | 39,121 |
| Old West History | 0 | - | 4.28 | 14,770 |
| U.S. History Groups of Two | 0 | - | 4.27 | 35,161 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.19 | 41,063 |
| Life of Benjamin Franklin | 0 | - | 4.18 | 6,211 |
| American Revolution - Multiple Choice | 0 | - | 4.31 | 18,734 |
| Last Names in U.S. History #1 | 0 | - | 4.24 | 34,122 |
| Fifty US States in One Minute | 0 | - | 4.55 | 3,221,539 |
| U.S. State Flags | 0 | - | 4.87 | 134,592 |
| U.S. States that Border Canada | 0 | - | 4.90 | 165,164 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 183,429 |
| Category Elimination - U.S. States #1 | 0 | - | 4.91 | 193,473 |
| Great Plains States and Provinces on a Map | 0 | - | 4.94 | 37,353 |
| Cartoon Versions of U.S. States | 0 | - | 4.84 | 51,196 |
| Top 10 Coldest U.S. States | 0 | - | 4.91 | 99,443 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 100,046 |
| Top 10 Most Native American U.S. States | 0 | - | 4.84 | 70,530 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 56,930 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.82 | 90,615 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.93 | 51,603 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 130,302 |
| Random European Countries on a Map | 0 | - | 4.98 | 258,398 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 67,769 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.96 | 55,586 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 99,273 |
| U.S. History Multiple Choice #5 | 0 | - | 4.34 | 10,294 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 110,554 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 66,314 |
| Biggest British Empire Countries | 0 | - | 4.67 | 78,667 |
| Shakespeare Quotes Quiz | 0 | - | 4.40 | 62,069 |
| Countries of Asia in 1900 | 0 | - | 4.49 | 53,046 |
| The Iraq War | 0 | - | 4.43 | 14,294 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 97,850 |
| Colonies of Africa with a Map | 0 | - | 4.80 | 48,009 |
