| U.S. Presidents Quiz | 0 | - | 5.00 | 3,663,461 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,242 |
| U.S. Vice Presidents | 0 | - | 4.41 | 135,300 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,097 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,700 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,142 |
| Presidential Middle Names | 0 | - | 4.41 | 59,800 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,847 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,952 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,216 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,783 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,540 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,939 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,176 |
| First Ladies of the United States | 0 | - | 4.28 | 85,311 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,130 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,491 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,035 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,852 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,710 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,834 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,294 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,734 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,640 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,505 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,669 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,531 |
| The John Adams Presidency | 0 | - | 4.12 | 8,688 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,693 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,790 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,783 |
| The George Washington Presidency | 0 | - | 4.03 | 14,485 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,889 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,242 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,623 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,741 |
| Vietnam War Countries | 0 | - | 4.83 | 93,739 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,225 |
| U.S. President Scramble | 0 | - | 4.40 | 116,319 |
| U.S. Senators by State | 0 | - | 4.45 | 39,794 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,541 |
| The Kennedy Family | 0 | - | 3.90 | 14,033 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,379 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,101 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,526 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,493 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,784 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,665 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 620,207 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,966 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,049 |
| The American Revolution | 0 | - | 4.52 | 54,101 |
| United States Map Quiz | 0 | - | 4.98 | 4,144,828 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,046 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,497 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,392 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,275 |
| Harvard University | 0 | - | 4.15 | 8,270 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,446 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 34,928 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,205 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 80,969 |
| Presidential Actors | 0 | - | 4.36 | 19,088 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 65,902 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,900 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,269 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,020 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,355 |
| The Iraq War | 0 | - | 4.47 | 15,574 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,061 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,529 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,005 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 74,980 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,372 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,432 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,736 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,937 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,212 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,594 |
| US States Quiz | 0 | - | 5.00 | 16,735,492 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,604 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,192 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,635 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,656 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,306 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,191 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,338 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,460 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,090 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,802 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,352 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,816 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,430 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 241,504 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,864 |
| Pixelated United States Map | 0 | - | 4.89 | 93,641 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,698 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,014 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,911 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,585 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,683 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,183 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,753 |
| Las Vegas Casinos | 0 | - | 4.12 | 37,985 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,070 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,595 |
| The Most Recent... United States | 0 | - | 4.45 | 18,323 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,201 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,945 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,561 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,608 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,915 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,165 |
| U.S. States By Population | 0 | - | 4.92 | 152,533 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,602 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,991 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,998 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,729 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,842 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,023 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,230 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,182 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,615 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,145 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,758 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,954 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,498 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,170 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,229 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,648 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,561 |
| The Persian Gulf War | 0 | - | 4.02 | 8,414 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,355 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,389 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,866 |
| Rivers of the United States | 0 | - | 4.93 | 65,658 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,608 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,828 |
| American Revolution Decoder | 0 | - | 4.10 | 20,889 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,540 |
| California A-Z | 0 | - | 4.49 | 28,728 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,585 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,583 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,022 |
| The American Civil War | 0 | - | 4.62 | 52,211 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 502,869 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,295 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,782 |
| US States with an Empty Map | 0 | - | 5.00 | 619,947 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,115 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,754 |
| Draw All US State Borders | 0 | - | 4.99 | 134,314 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,046 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,862 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,273 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,213 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,044 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,620 |
| Merged U.S. States | 0 | - | 4.36 | 43,927 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 94,992 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,180 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,665 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,916 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,647 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,237 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,954 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 491,784 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,602 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,083 |
| Most-Visited Countries by Popes | 0 | - | 4.55 | 83,291 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,346 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 81,997 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,835 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,606 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 54,059 |
| Random American Countries on a Map | 0 | - | 4.96 | 98,832 |
| South America Flags Map Quiz | 0 | - | 4.95 | 86,891 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 217,346 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,608 |
| Most Common High School Mascots | 0 | - | 4.47 | 31,885 |
| American Founding Fathers | 0 | - | 4.41 | 23,088 |
| History of Florida | 0 | - | 4.45 | 9,776 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,069 |
| Hawaiian Islands | 0 | - | 4.83 | 42,493 |
| Boston Red Sox Trivia | 0 | - | 4.09 | 7,512 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,137 |
| History of Texas | 0 | - | 4.43 | 14,567 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,142 |
| American History Quotes #1 | 0 | - | 4.37 | 95,734 |
| People on Money - United States | 0 | - | 4.31 | 63,232 |
| American History Quotes #2 | 0 | - | 4.38 | 41,248 |
| Old West History | 0 | - | 4.33 | 15,234 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,285 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,767 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,498 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,867 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,659 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,108 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,522,506 |
| U.S. State Flags | 0 | - | 4.89 | 167,937 |
