| U.S. Presidents Quiz | 0 | - | 5.00 | 3,205,008 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 169,090 |
| U.S. Vice Presidents | 0 | - | 4.41 | 121,061 |
| U.S. Presidential Trivia #1 | 0 | - | 4.51 | 97,874 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.57 | 82,583 |
| U.S. Presidential Trivia #2 | 0 | - | 4.52 | 40,255 |
| Assassinated U.S. Presidents | 0 | - | 4.54 | 80,654 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 33,688 |
| Name a Valid U.S. President #2 | 0 | - | 4.52 | 61,913 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 355,472 |
| Governors Who Ran For President | 0 | - | 4.47 | 18,959 |
| U.S. Presidents by Event | 0 | - | 4.58 | 29,306 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 25,993 |
| First Ladies of the United States | 0 | - | 4.27 | 80,365 |
| Presidential Middle Names | 0 | - | 4.37 | 56,376 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 24,933 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 65,626 |
| Random U.S. Vice President to President | 0 | - | 4.55 | 27,981 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.63 | 14,058 |
| Add a Letter - Make a U.S. President | 0 | - | 4.66 | 22,139 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.41 | 22,610 |
| U.S. Presidents Who Died in Office | 0 | - | 4.75 | 31,399 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 396,997 |
| People in Pictures with Barack Obama | 0 | - | 4.11 | 45,286 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.51 | 25,642 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 12,926 |
| The John Adams Presidency | 0 | - | 4.10 | 8,024 |
| The Theodore Roosevelt Presidency | 0 | - | 4.33 | 7,172 |
| U.S. Vice Presidential Trivia | 0 | - | 4.31 | 11,555 |
| Play-Doh Presidents | 0 | - | 5.00 | 75,789 |
| The George Washington Presidency | 0 | - | 4.02 | 13,694 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.34 | 10,730 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.32 | 16,898 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.32 | 20,597 |
| Vietnam War Countries | 0 | - | 4.81 | 86,860 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.41 | 281,428 |
| George Washington... or George W. Bush? | 0 | - | 4.14 | 11,425 |
| U.S. President Scramble | 0 | - | 4.37 | 91,811 |
| U.S. Presidents True or False | 0 | - | 3.94 | 14,648 |
| The Kennedy Family | 0 | - | 3.84 | 13,348 |
| U.S. Senators by State | 0 | - | 4.49 | 36,452 |
| U.S. Presidential Quotes | 0 | - | 4.36 | 42,839 |
| The John F. Kennedy Presidency | 0 | - | 4.45 | 41,161 |
| The American Revolution | 0 | - | 4.51 | 51,918 |
| Deadliest U.S. Wars | 0 | - | 4.83 | 159,306 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 123,003 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.84 | 51,358 |
| Win the U.S. Presidential Election | 0 | - | 4.79 | 517,834 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.73 | 19,312 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 37,755 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.46 | 21,042 |
| Six Flags Over Texas | 0 | - | 4.84 | 59,166 |
| The Iraq War | 0 | - | 4.45 | 14,462 |
| United States Map Quiz | 0 | - | 4.98 | 3,923,123 |
| The George W. Bush Presidency | 0 | - | 4.06 | 31,003 |
| Random U.S. Presidents by Picture | 0 | - | 4.37 | 60,593 |
| The Barack Obama Presidency | 0 | - | 4.17 | 23,730 |
| Harvard University | 0 | - | 4.15 | 7,768 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 77,815 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 100,359 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 107,878 |
| Rust Belt Cities Map Quiz | 0 | - | 4.56 | 32,473 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.43 | 69,641 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.69 | 74,421 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.52 | 70,521 |
| Presidential Actors | 0 | - | 4.33 | 17,907 |
| The Bill Clinton Presidency | 0 | - | 4.18 | 30,271 |
| The George H. W. Bush Presidency | 0 | - | 4.35 | 20,617 |
| The Ronald Reagan Presidency | 0 | - | 4.25 | 23,712 |
| The Richard Nixon Presidency | 0 | - | 4.10 | 20,918 |
| The Jimmy Carter Presidency | 0 | - | 4.39 | 18,134 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.92 | 50,975 |
| Countries of the Soviet Union | 0 | - | 4.98 | 185,704 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 74,999 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 94,710 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 101,547 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.84 | 55,438 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 94,654 |
| U.S. State Border Crossings | 0 | - | 4.96 | 82,698 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 223,316 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.84 | 34,255 |
| Total United States Immigration by Country | 0 | - | 4.89 | 97,563 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 66,014 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 148,451 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.94 | 187,505 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 67,956 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.20 | 30,432 |
| Cities and Towns of Massachusetts | 0 | - | 4.90 | 61,574 |
| US States Quiz | 0 | - | 5.00 | 14,904,238 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 342,123 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 135,122 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 63,958 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.93 | 50,500 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 59,724 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 47,164 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 128,238 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.89 | 51,808 |
| Countries of Iberia in History with a Map | 0 | - | 4.82 | 34,661 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.96 | 76,591 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 90,957 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 223,540 |
| Vatican City Country Quiz | 0 | - | 4.50 | 39,734 |
| Most-Visited Countries by Popes | 0 | - | 4.63 | 77,125 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 61,384 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 67,566 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 88,336 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.85 | 48,517 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 78,819 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 67,900 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 35,284 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.96 | 278,975 |
| Pixelated United States Map | 0 | - | 4.90 | 83,054 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 94,552 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 79,701 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 125,617 |
| Countries that Beat the United States | 0 | - | 4.92 | 147,239 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,400 |
| George Bush... or George Bush | 0 | - | 3.89 | 7,740 |
| American Revolution Decoder | 0 | - | 4.12 | 20,068 |
| California A-Z | 0 | - | 4.48 | 27,883 |
| Las Vegas Casinos Quiz | 0 | - | 4.07 | 36,553 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.85 | 22,191 |
| U.S. History for Dummies | 0 | - | 4.50 | 65,957 |
| The American Civil War | 0 | - | 4.63 | 49,335 |
| U.S. Civil War Decoder | 0 | - | 4.17 | 24,179 |
| The 13 Colonies Quiz | 0 | - | 4.96 | 101,432 |
| Word Scramble - U.S. States | 0 | - | 4.96 | 462,366 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 97,251 |
| 10 Southernmost U.S. States | 0 | - | 4.85 | 100,299 |
| U.S. States with Short Names | 0 | - | 4.87 | 131,363 |
| U.S. States that Start with M | 0 | - | 4.91 | 151,930 |
| U.S. States By Population | 0 | - | 4.90 | 131,007 |
| U.S. States that Start with N | 0 | - | 4.95 | 156,497 |
| U.S. States with Longest Names | 0 | - | 4.85 | 36,541 |
| Louisiana Purchase with a Map | 0 | - | 4.95 | 36,943 |
| US States with an Empty Map | 0 | - | 5.00 | 559,831 |
| 10 Northernmost U.S. States | 0 | - | 4.89 | 74,472 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 78,543 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 58,774 |
| Draw All US State Borders | 0 | - | 4.99 | 96,297 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 56,722 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 146,365 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 168,491 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 99,567 |
| Top 10 Least Obese U.S. States | 0 | - | 4.81 | 69,001 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 90,405 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 73,908 |
| Merged U.S. States | 0 | - | 4.40 | 40,641 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 72,347 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 116,888 |
| Countries that Bordered the USSR | 0 | - | 4.94 | 154,040 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 90,018 |
| Ultimate Harry Potter Name Game | 0 | - | 4.95 | 465,984 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 72,558 |
| South America Flags Map Quiz | 0 | - | 4.95 | 72,221 |
| Rivers of the United States | 0 | - | 4.92 | 57,650 |
| Countries Closest to United States A-Z | 0 | - | 4.84 | 108,173 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.33 | 10,413 |
| Countries Closest to Alaska | 0 | - | 4.92 | 99,938 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.32 | 42,398 |
| History of Florida | 0 | - | 4.44 | 8,785 |
| Hawaiian Islands | 0 | - | 4.85 | 38,717 |
| Hawaiian Islands Map Quiz | 0 | - | 4.88 | 21,179 |
| Countries Closest to Maine | 0 | - | 4.85 | 59,574 |
| New York Yankees Trivia | 0 | - | 4.36 | 6,143 |
| History of Texas | 0 | - | 4.41 | 13,559 |
| U.S. States that Border Tennessee | 0 | - | 4.84 | 57,997 |
| American History Quotes #1 | 0 | - | 4.40 | 91,817 |
| People on Money - United States | 0 | - | 4.31 | 61,910 |
| American History Quotes #2 | 0 | - | 4.38 | 39,379 |
| U.S. History Groups of Two | 0 | - | 4.28 | 35,550 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 41,520 |
| Last Names in U.S. History #1 | 0 | - | 4.24 | 34,377 |
| Last Names in U.S. History #2 | 0 | - | 4.42 | 16,108 |
| U.S. State Flags | 0 | - | 4.87 | 138,958 |
| U.S. States that Border Canada | 0 | - | 4.90 | 166,512 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 186,618 |
| Great Plains States and Provinces on a Map | 0 | - | 4.94 | 38,780 |
| Cartoon Versions of U.S. States | 0 | - | 4.82 | 52,783 |
| Top 10 Coldest U.S. States | 0 | - | 4.91 | 101,238 |
| Top 10 Hottest U.S. States | 0 | - | 4.83 | 101,755 |
| Top 10 Most Native American U.S. States | 0 | - | 4.84 | 72,072 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 57,340 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.82 | 91,354 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 52,338 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 149,206 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 51,737 |
| Biggest Roman Empire Countries | 0 | - | 4.88 | 82,637 |
| U.S. History Multiple Choice #5 | 0 | - | 4.36 | 10,531 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 112,836 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 402,660 |
| Groups of Things - Harry Potter | 0 | - | 4.86 | 262,522 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.90 | 31,324 |
| Countries of the Popes | 0 | - | 4.82 | 112,148 |
| Countries of Asia in 1900 | 0 | - | 4.49 | 53,835 |
| The Persian Gulf War | 0 | - | 4.00 | 7,747 |
| The Vietnam War | 0 | - | 4.41 | 33,057 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 99,043 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 48,838 |
| Random American Countries on a Map | 0 | - | 4.96 | 87,325 |
