| U.S. Presidents Quiz | 0 | - | 5.00 | 3,676,432 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,800 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,304 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,981 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,365 |
| Presidential Middle Names | 0 | - | 4.41 | 59,968 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,011 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,239 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,291 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,871 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,705 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,480 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,708 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,206 |
| First Ladies of the United States | 0 | - | 4.28 | 85,399 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,165 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,713 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,098 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,892 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,742 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,881 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,130 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,787 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,711 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,556 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,692 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,574 |
| The John Adams Presidency | 0 | - | 4.12 | 8,708 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,715 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,811 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,971 |
| The George Washington Presidency | 0 | - | 4.03 | 14,510 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,907 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,270 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,640 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,249 |
| Vietnam War Countries | 0 | - | 4.83 | 93,924 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,239 |
| U.S. President Scramble | 0 | - | 4.40 | 116,495 |
| U.S. Senators by State | 0 | - | 4.45 | 39,857 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,561 |
| The Kennedy Family | 0 | - | 3.90 | 14,051 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,414 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,134 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,591 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,849 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,948 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,782 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 622,837 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,984 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,096 |
| The American Revolution | 0 | - | 4.52 | 54,160 |
| United States Map Quiz | 0 | - | 4.98 | 4,149,160 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,084 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,556 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,453 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,324 |
| Harvard University | 0 | - | 4.15 | 8,280 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,561 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 34,974 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,341 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,119 |
| Presidential Actors | 0 | - | 4.36 | 19,119 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 66,008 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,420 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,534 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,243 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,457 |
| The Iraq War | 0 | - | 4.47 | 15,604 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,229 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,897 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,194 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,069 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,403 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,453 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,771 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,968 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,512 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,710 |
| US States Quiz | 0 | - | 5.00 | 16,787,427 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,195 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,592 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,904 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,020 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,521 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,415 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,482 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,914 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,369 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,005 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,604 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,098 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,833 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 242,455 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 329,990 |
| Pixelated United States Map | 0 | - | 4.89 | 93,851 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,057 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,301 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,005 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,707 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,721 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,192 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 65,933 |
| Las Vegas Casinos | 0 | - | 4.12 | 38,019 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,170 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,770 |
| The Most Recent... United States | 0 | - | 4.45 | 18,378 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,229 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,408 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,962 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,964 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,421 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,653 |
| U.S. States By Population | 0 | - | 4.92 | 152,827 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,938 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,194 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,235 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,984 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,006 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,310 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,578 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,399 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,900 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,344 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,005 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,232 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,738 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,475 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,374 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,887 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,927 |
| The Persian Gulf War | 0 | - | 4.02 | 8,429 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,460 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,556 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,962 |
| Rivers of the United States | 0 | - | 4.93 | 65,865 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,871 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,203 |
| American Revolution Decoder | 0 | - | 4.10 | 20,908 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,842 |
| California A-Z | 0 | - | 4.49 | 28,748 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,704 |
| Countries Closest to Maine | 0 | - | 4.85 | 66,777 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,052 |
| The American Civil War | 0 | - | 4.62 | 52,295 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 504,286 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,351 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,135 |
| US States with an Empty Map | 0 | - | 5.00 | 621,613 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,871 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,028 |
| Draw All US State Borders | 0 | - | 4.99 | 135,533 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,253 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,111 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,571 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,442 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,221 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,708 |
| Merged U.S. States | 0 | - | 4.37 | 44,004 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,402 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,566 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,902 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,238 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,796 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,267 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,163 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 492,294 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,922 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,188 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,426 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,533 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,271 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,962 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,876 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,224 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,061 |
| South America Flags Map Quiz | 0 | - | 4.95 | 87,278 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 218,335 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,822 |
| Most Common High School Mascots | 0 | - | 4.47 | 31,974 |
| American Founding Fathers | 0 | - | 4.42 | 23,123 |
| History of Florida | 0 | - | 4.45 | 9,794 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,085 |
| Hawaiian Islands | 0 | - | 4.83 | 42,571 |
| Boston Red Sox Trivia | 0 | - | 4.09 | 7,524 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,163 |
| History of Texas | 0 | - | 4.43 | 14,586 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,222 |
| American History Quotes #1 | 0 | - | 4.37 | 95,860 |
| People on Money - United States | 0 | - | 4.31 | 63,271 |
| American History Quotes #2 | 0 | - | 4.38 | 41,323 |
| Old West History | 0 | - | 4.33 | 15,243 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,345 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,842 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,509 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,896 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,691 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,155 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,528,288 |
| U.S. State Flags | 0 | - | 4.89 | 168,990 |
