| U.S. Presidents Quiz | 0 | - | 5.00 | 3,163,668 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 166,665 |
| U.S. Vice Presidents | 0 | - | 4.42 | 119,247 |
| U.S. Presidential Trivia #1 | 0 | - | 4.51 | 96,801 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.56 | 81,428 |
| U.S. Presidential Trivia #2 | 0 | - | 4.51 | 39,627 |
| Assassinated U.S. Presidents | 0 | - | 4.54 | 79,926 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 33,523 |
| Name a Valid U.S. President #2 | 0 | - | 4.52 | 61,022 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 352,647 |
| Governors Who Ran For President | 0 | - | 4.47 | 18,877 |
| U.S. Presidents by Event | 0 | - | 4.58 | 29,075 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 25,666 |
| First Ladies of the United States | 0 | - | 4.27 | 79,815 |
| Presidential Middle Names | 0 | - | 4.37 | 56,069 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 24,826 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.31 | 64,075 |
| Random U.S. Vice President to President | 0 | - | 4.57 | 23,174 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.63 | 13,867 |
| Add a Letter - Make a U.S. President | 0 | - | 4.66 | 21,883 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.41 | 22,506 |
| U.S. Presidents Who Died in Office | 0 | - | 4.75 | 31,183 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 394,023 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 45,060 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 12,856 |
| The John Adams Presidency | 0 | - | 4.10 | 7,960 |
| The Theodore Roosevelt Presidency | 0 | - | 4.31 | 7,132 |
| U.S. Vice Presidential Trivia | 0 | - | 4.29 | 11,374 |
| Play-Doh Presidents | 0 | - | 5.00 | 74,411 |
| The George Washington Presidency | 0 | - | 4.02 | 13,618 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.33 | 10,679 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.32 | 16,787 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.32 | 20,495 |
| Vietnam War Countries | 0 | - | 4.81 | 86,314 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.44 | 278,514 |
| U.S. President Scramble | 0 | - | 4.39 | 90,705 |
| U.S. Presidents True or False | 0 | - | 3.94 | 14,584 |
| The Kennedy Family | 0 | - | 3.85 | 13,254 |
| U.S. Senators by State | 0 | - | 4.49 | 36,088 |
| U.S. Presidential Quotes | 0 | - | 4.35 | 42,685 |
| The John F. Kennedy Presidency | 0 | - | 4.45 | 40,943 |
| The American Revolution | 0 | - | 4.55 | 51,646 |
| Deadliest U.S. Wars | 0 | - | 4.82 | 157,850 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 122,411 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.84 | 50,933 |
| Win the U.S. Presidential Election | 0 | - | 4.79 | 506,571 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.75 | 19,246 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 37,476 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.46 | 20,838 |
| Six Flags Over Texas | 0 | - | 4.84 | 58,674 |
| The Iraq War | 0 | - | 4.43 | 14,345 |
| United States Map Quiz | 0 | - | 4.98 | 3,898,003 |
| The George W. Bush Presidency | 0 | - | 4.06 | 30,888 |
| Random U.S. Presidents by Picture | 0 | - | 4.37 | 59,863 |
| The Barack Obama Presidency | 0 | - | 4.17 | 23,561 |
| Harvard University | 0 | - | 4.15 | 7,723 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 76,448 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 99,849 |
| Third Most Common Language by U.S. State | 0 | - | 4.91 | 106,868 |
| Rust Belt Cities Map Quiz | 0 | - | 4.55 | 32,134 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.43 | 69,008 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.70 | 73,638 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.52 | 69,935 |
| Presidential Actors | 0 | - | 4.33 | 17,774 |
| The Bill Clinton Presidency | 0 | - | 4.18 | 30,155 |
| The George H. W. Bush Presidency | 0 | - | 4.35 | 20,524 |
| The Ronald Reagan Presidency | 0 | - | 4.25 | 23,592 |
| The Richard Nixon Presidency | 0 | - | 4.10 | 20,805 |
| The Jimmy Carter Presidency | 0 | - | 4.39 | 18,018 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.92 | 49,114 |
| Countries of the Soviet Union | 0 | - | 4.98 | 184,603 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 74,383 |
| Biggest Spanish Empire Countries | 0 | - | 4.90 | 93,188 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 99,758 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.84 | 54,565 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 93,324 |
| U.S. State Border Crossings | 0 | - | 4.96 | 82,012 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 221,895 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.83 | 33,097 |
| Total United States Immigration by Country | 0 | - | 4.89 | 96,501 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.87 | 65,119 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 146,554 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.95 | 184,228 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 67,524 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.20 | 30,052 |
| Cities and Towns of Massachusetts | 0 | - | 4.89 | 60,173 |
| US States Quiz | 0 | - | 5.00 | 14,705,223 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 339,720 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 133,413 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 62,572 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.93 | 49,026 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 58,532 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 46,278 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.96 | 126,216 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.88 | 50,908 |
| Countries of Iberia in History with a Map | 0 | - | 4.81 | 33,890 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 75,452 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 90,090 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 221,801 |
| Vatican City Country Quiz | 0 | - | 4.49 | 39,030 |
| Most-Visited Countries by Popes | 0 | - | 4.64 | 63,311 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 60,466 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 67,025 |
| Countries Bordering China Since 1914 | 0 | - | 4.91 | 87,539 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 77,728 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 67,234 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 34,958 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.95 | 273,190 |
| Pixelated United States Map | 0 | - | 4.90 | 82,006 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 92,978 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 78,407 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 124,233 |
| Countries that Beat the United States | 0 | - | 4.92 | 145,331 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,298 |
| George Bush... or George Bush | 0 | - | 3.89 | 7,704 |
| American Revolution Decoder | 0 | - | 4.12 | 19,972 |
| California A-Z | 0 | - | 4.48 | 27,799 |
| Las Vegas Casinos Quiz | 0 | - | 4.07 | 32,451 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.84 | 21,482 |
| U.S. History for Dummies | 0 | - | 4.49 | 65,227 |
| The American Civil War | 0 | - | 4.71 | 48,964 |
| U.S. Civil War Decoder | 0 | - | 4.16 | 24,046 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 100,390 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 458,438 |
| U.S. States with the Letter Y | 0 | - | 4.87 | 95,953 |
| 10 Southernmost U.S. States | 0 | - | 4.84 | 99,006 |
| U.S. States with Short Names | 0 | - | 4.87 | 129,432 |
| U.S. States that Start with M | 0 | - | 4.91 | 150,186 |
| U.S. States By Population | 0 | - | 4.90 | 129,837 |
| U.S. States that Start with N | 0 | - | 4.95 | 155,266 |
| U.S. States with Longest Names | 0 | - | 4.84 | 35,945 |
| Louisiana Purchase with a Map | 0 | - | 4.95 | 36,009 |
| US States with an Empty Map | 0 | - | 5.00 | 552,930 |
| 10 Northernmost U.S. States | 0 | - | 4.89 | 73,512 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 77,636 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 58,239 |
| Draw All US State Borders | 0 | - | 4.99 | 92,690 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 55,906 |
| U.S. States with the Longest International Borders | 0 | - | 4.81 | 40,524 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 145,180 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 167,759 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 98,955 |
| Top 10 Newest U.S. States | 0 | - | 4.81 | 68,013 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.89 | 89,267 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 73,084 |
| Merged U.S. States | 0 | - | 4.38 | 40,273 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 71,022 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 115,903 |
| Countries that Bordered the USSR | 0 | - | 4.94 | 142,083 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 88,451 |
| Biggest Roman Empire Countries | 0 | - | 4.88 | 81,915 |
| Ultimate Harry Potter Name Game | 0 | - | 4.95 | 463,281 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 71,441 |
| South America Flags Map Quiz | 0 | - | 4.95 | 70,540 |
| Rivers of the United States | 0 | - | 4.91 | 56,799 |
| Countries Closest to United States A-Z | 0 | - | 4.86 | 107,222 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.33 | 10,336 |
| Countries Closest to Alaska | 0 | - | 4.93 | 98,848 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.33 | 41,672 |
| History of Florida | 0 | - | 4.44 | 8,710 |
| Hawaiian Islands | 0 | - | 4.85 | 38,463 |
| Hawaiian Islands Map Quiz | 0 | - | 4.88 | 20,974 |
| Countries Closest to Maine | 0 | - | 4.85 | 58,827 |
| New York Yankees Trivia | 0 | - | 4.36 | 5,972 |
| History of Texas | 0 | - | 4.41 | 13,476 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 57,797 |
| American History Quotes #1 | 0 | - | 4.40 | 91,319 |
| People on Money - United States | 0 | - | 4.31 | 61,745 |
| American History Quotes #2 | 0 | - | 4.34 | 39,203 |
| U.S. History Groups of Two | 0 | - | 4.27 | 35,280 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 41,223 |
| Last Names in U.S. History #1 | 0 | - | 4.24 | 34,220 |
| Last Names in U.S. History #2 | 0 | - | 4.41 | 15,955 |
| U.S. State Flags | 0 | - | 4.88 | 136,011 |
| U.S. States that Border Canada | 0 | - | 4.90 | 165,694 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 184,333 |
| Great Plains States and Provinces on a Map | 0 | - | 4.94 | 37,871 |
| Cartoon Versions of U.S. States | 0 | - | 4.84 | 51,817 |
| Top 10 Coldest U.S. States | 0 | - | 4.91 | 99,771 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 100,514 |
| Top 10 Most Native American U.S. States | 0 | - | 4.84 | 71,109 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 57,044 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.82 | 90,882 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 51,875 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 147,544 |
| U.S. History Multiple Choice #5 | 0 | - | 4.34 | 10,366 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 111,264 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 398,867 |
| Groups of Things - Harry Potter | 0 | - | 4.85 | 260,441 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.90 | 30,793 |
| Countries of Asia in 1900 | 0 | - | 4.49 | 53,296 |
| The Persian Gulf War | 0 | - | 3.98 | 7,691 |
| The Vietnam War | 0 | - | 4.41 | 32,778 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 98,324 |
| Colonies of Africa with a Map | 0 | - | 4.80 | 48,258 |
| Random American Countries on a Map | 0 | - | 4.95 | 85,956 |
| Most-Spoken Languages of the United States | 0 | - | 4.45 | 163,482 |
| Territories of the United States | 0 | - | 4.76 | 48,456 |
| Most Mentioned Enemies of the USA | 0 | - | 4.79 | 159,637 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.38 | 7,869 |
