| U.S. Presidents Quiz | 0 | - | 5.00 | 3,696,566 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,722 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,689 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,449 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,771 |
| Presidential Middle Names | 0 | - | 4.41 | 60,215 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,312 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,578 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,416 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,980 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,985 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,488 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,226 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,254 |
| First Ladies of the United States | 0 | - | 4.28 | 85,624 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,071 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,187 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,958 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,826 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,951 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,364 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,879 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 28,834 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,631 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,727 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,647 |
| The John Adams Presidency | 0 | - | 4.12 | 8,746 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,742 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,850 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,272 |
| The George Washington Presidency | 0 | - | 4.03 | 14,544 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,933 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,319 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,673 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,891 |
| Vietnam War Countries | 0 | - | 4.82 | 94,196 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,264 |
| U.S. President Scramble | 0 | - | 4.40 | 116,746 |
| U.S. Senators by State | 0 | - | 4.44 | 39,945 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,599 |
| The Kennedy Family | 0 | - | 3.90 | 14,071 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,496 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,189 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,729 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,745 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,247 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,942 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 627,228 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,055 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,182 |
| The American Revolution | 0 | - | 4.52 | 54,249 |
| United States Map Quiz | 0 | - | 4.98 | 4,157,456 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,133 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,669 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,574 |
| The Barack Obama Presidency | 0 | - | 4.13 | 25,394 |
| Harvard University | 0 | - | 4.15 | 8,297 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,718 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,078 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,498 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,310 |
| Presidential Actors | 0 | - | 4.36 | 19,167 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,222 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,117 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,891 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,557 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,603 |
| The Iraq War | 0 | - | 4.47 | 15,652 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,456 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,404 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,441 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,179 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,454 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,494 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,821 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,015 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,968 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,921 |
| US States Quiz | 0 | - | 5.00 | 16,867,105 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,954 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,169 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 81,428 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,600 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,943 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,825 |
| U.S. States Closest to Moscow | 0 | - | 4.50 | 48,042 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,718 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,565 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,819 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,238 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,921 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,596 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,440 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,891 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 331,821 |
| Pixelated United States Map | 0 | - | 4.87 | 94,242 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,618 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,728 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,071 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,862 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,790 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,203 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,200 |
| Las Vegas Casinos | 0 | - | 4.13 | 38,058 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,348 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,033 |
| The Most Recent... United States | 0 | - | 4.45 | 18,440 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,266 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,824 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,374 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,384 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,943 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,225 |
| U.S. States By Population | 0 | - | 4.92 | 153,510 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,398 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,421 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,487 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,259 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,195 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,585 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,922 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,683 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,162 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,485 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,200 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,489 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 54,109 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,090 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,949 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,821 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,252 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,545 |
| The Persian Gulf War | 0 | - | 4.02 | 8,449 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,643 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,792 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,163 |
| Rivers of the United States | 0 | - | 4.93 | 66,173 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,389 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,374 |
| American Revolution Decoder | 0 | - | 4.10 | 20,955 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,287 |
| California A-Z | 0 | - | 4.49 | 28,788 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,899 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,083 |
| Events in U.S. History | 0 | - | 4.41 | 28,662 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,109 |
| The American Civil War | 0 | - | 4.62 | 52,412 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 506,365 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,417 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,563 |
| US States with an Empty Map | 0 | - | 5.00 | 624,326 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 208,807 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,402 |
| Draw All US State Borders | 0 | - | 4.99 | 137,398 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,624 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,607 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,960 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,730 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,449 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,889 |
| Merged U.S. States | 0 | - | 4.37 | 44,154 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,974 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,140 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,346 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,727 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,056 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,312 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,515 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 493,300 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,368 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,348 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,706 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,865 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,661 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,225 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,249 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,428 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,504 |
| South America Flags Map Quiz | 0 | - | 4.95 | 87,869 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 219,867 |
| Names of Generations | 0 | - | 4.09 | 44,829 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,127 |
| Most Common High School Mascots | 0 | - | 4.47 | 32,110 |
| American Founding Fathers | 0 | - | 4.42 | 23,222 |
| History of Florida | 0 | - | 4.45 | 9,823 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,103 |
| Hawaiian Islands | 0 | - | 4.83 | 42,695 |
| Boston Red Sox Trivia | 0 | - | 4.09 | 7,545 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,204 |
| History of Texas | 0 | - | 4.43 | 14,622 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,308 |
| American History Quotes #1 | 0 | - | 4.37 | 96,015 |
| People on Money - United States | 0 | - | 4.31 | 63,342 |
| American History Quotes #2 | 0 | - | 4.38 | 41,396 |
| Old West History | 0 | - | 4.34 | 15,272 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,451 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,040 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,518 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,926 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,728 |
