| U.S. Presidents Quiz | 0 | - | 5.00 | 3,679,812 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,937 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,367 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,043 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,415 |
| Presidential Middle Names | 0 | - | 4.41 | 59,988 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,055 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,290 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,303 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,881 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,747 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,603 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,799 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,214 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,171 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,769 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,108 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,902 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,750 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,890 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,346 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,808 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,732 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,565 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,695 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,583 |
| The John Adams Presidency | 0 | - | 4.12 | 8,712 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,716 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,814 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,007 |
| The George Washington Presidency | 0 | - | 4.03 | 14,512 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,908 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,279 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,643 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,370 |
| Vietnam War Countries | 0 | - | 4.83 | 93,953 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,248 |
| U.S. President Scramble | 0 | - | 4.40 | 116,531 |
| U.S. Senators by State | 0 | - | 4.45 | 39,871 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,568 |
| The Kennedy Family | 0 | - | 3.90 | 14,054 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,425 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,141 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,608 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,221 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,986 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,806 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 623,530 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,989 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,105 |
| The American Revolution | 0 | - | 4.52 | 54,170 |
| United States Map Quiz | 0 | - | 4.98 | 4,150,107 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,088 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,567 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,468 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,336 |
| Harvard University | 0 | - | 4.15 | 8,287 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,590 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,000 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,358 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,141 |
| Presidential Actors | 0 | - | 4.36 | 19,131 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 66,023 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,515 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,608 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,309 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,478 |
| The Iraq War | 0 | - | 4.47 | 15,618 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,275 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,962 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,241 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,088 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,409 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,458 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,778 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,978 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,556 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,741 |
| US States Quiz | 0 | - | 5.00 | 16,800,229 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,303 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,668 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 75,965 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,090 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,577 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,469 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,525 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,022 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,439 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,051 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,638 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,158 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,930 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 242,654 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 330,299 |
| Pixelated United States Map | 0 | - | 4.89 | 93,909 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,135 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,366 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,035 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,732 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,728 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,196 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 65,972 |
| Las Vegas Casinos | 0 | - | 4.12 | 38,023 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,224 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,816 |
| The Most Recent... United States | 0 | - | 4.45 | 18,387 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,236 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,477 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,012 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,026 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,510 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,734 |
| U.S. States By Population | 0 | - | 4.92 | 152,871 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,014 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,226 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,271 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,032 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,030 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,360 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,648 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,433 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,938 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,363 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,030 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,269 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.97 | 53,823 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,790 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,550 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,418 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,952 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,005 |
| The Persian Gulf War | 0 | - | 4.02 | 8,432 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,489 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,598 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,025 |
| Rivers of the United States | 0 | - | 4.93 | 65,923 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,972 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,305 |
| American Revolution Decoder | 0 | - | 4.10 | 20,916 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,938 |
| California A-Z | 0 | - | 4.49 | 28,753 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,738 |
| Countries Closest to Maine | 0 | - | 4.85 | 66,842 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,060 |
| The American Civil War | 0 | - | 4.62 | 52,321 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 504,596 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,359 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,207 |
| US States with an Empty Map | 0 | - | 5.00 | 622,010 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 208,095 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,092 |
| Draw All US State Borders | 0 | - | 4.99 | 135,812 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,334 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,212 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,645 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,487 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,253 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,752 |
| Merged U.S. States | 0 | - | 4.37 | 44,029 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,506 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,669 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,991 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,318 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,828 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,272 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,238 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 492,431 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,990 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,214 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,471 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,574 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,320 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,999 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,926 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,262 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,123 |
| South America Flags Map Quiz | 0 | - | 4.95 | 87,384 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 218,574 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,873 |
| Most Common High School Mascots | 0 | - | 4.47 | 31,999 |
| American Founding Fathers | 0 | - | 4.42 | 23,167 |
| History of Florida | 0 | - | 4.45 | 9,799 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,088 |
| Hawaiian Islands | 0 | - | 4.83 | 42,587 |
| Boston Red Sox Trivia | 0 | - | 4.09 | 7,525 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,170 |
| History of Texas | 0 | - | 4.43 | 14,590 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,236 |
| American History Quotes #1 | 0 | - | 4.37 | 95,902 |
| People on Money - United States | 0 | - | 4.31 | 63,293 |
| American History Quotes #2 | 0 | - | 4.38 | 41,342 |
| Old West History | 0 | - | 4.33 | 15,247 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,360 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,915 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,512 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,898 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,695 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,190 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,530,038 |
| U.S. State Flags | 0 | - | 4.89 | 169,199 |
