| U.S. Presidents Quiz | 0 | - | 5.00 | 3,683,519 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,105 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,437 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,132 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,485 |
| Presidential Middle Names | 0 | - | 4.41 | 60,044 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,110 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,346 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,325 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,903 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,793 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,806 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,902 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,227 |
| First Ladies of the United States | 0 | - | 4.28 | 85,468 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,185 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,848 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,124 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,916 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,771 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,906 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,535 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,821 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,761 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,584 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,705 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,599 |
| The John Adams Presidency | 0 | - | 4.12 | 8,723 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,721 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,823 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,069 |
| The George Washington Presidency | 0 | - | 4.03 | 14,524 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,912 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,286 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,648 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,487 |
| Vietnam War Countries | 0 | - | 4.83 | 93,994 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,252 |
| U.S. President Scramble | 0 | - | 4.40 | 116,573 |
| U.S. Senators by State | 0 | - | 4.45 | 39,879 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,568 |
| The Kennedy Family | 0 | - | 3.90 | 14,057 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,442 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,155 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,638 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,358 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,037 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,836 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 624,326 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,002 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,120 |
| The American Revolution | 0 | - | 4.52 | 54,190 |
| United States Map Quiz | 0 | - | 4.98 | 4,151,021 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,095 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,591 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,497 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,345 |
| Harvard University | 0 | - | 4.15 | 8,288 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,609 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,013 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,383 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,176 |
| Presidential Actors | 0 | - | 4.36 | 19,136 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 66,077 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,611 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,664 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,361 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,496 |
| The Iraq War | 0 | - | 4.47 | 15,621 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,311 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,046 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,276 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,101 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,419 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,464 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,788 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,985 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,629 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,765 |
| US States Quiz | 0 | - | 5.00 | 16,812,397 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,416 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,745 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 76,022 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,162 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,624 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,512 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,557 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,122 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,511 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,091 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,691 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,219 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,034 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 242,867 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 330,566 |
| Pixelated United States Map | 0 | - | 4.87 | 93,986 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,221 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,424 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,041 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,762 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,739 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,197 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,010 |
| Las Vegas Casinos | 0 | - | 4.12 | 38,029 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,247 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,861 |
| The Most Recent... United States | 0 | - | 4.45 | 18,393 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,242 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,538 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,071 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,088 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,590 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,824 |
| U.S. States By Population | 0 | - | 4.92 | 152,925 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,082 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,269 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,311 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,062 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,065 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,394 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,694 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,459 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,979 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,399 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,062 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,315 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,844 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,617 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,464 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,000 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,094 |
| The Persian Gulf War | 0 | - | 4.02 | 8,435 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,510 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,625 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,057 |
| Rivers of the United States | 0 | - | 4.93 | 66,000 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,032 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,399 |
| American Revolution Decoder | 0 | - | 4.10 | 20,927 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,001 |
| California A-Z | 0 | - | 4.49 | 28,760 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,766 |
| Countries Closest to Maine | 0 | - | 4.85 | 66,901 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,074 |
| The American Civil War | 0 | - | 4.62 | 52,341 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 504,928 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,368 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,279 |
| US States with an Empty Map | 0 | - | 5.00 | 622,366 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 208,239 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,160 |
| Draw All US State Borders | 0 | - | 4.99 | 136,103 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,374 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,268 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,706 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,527 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,293 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,771 |
| Merged U.S. States | 0 | - | 4.37 | 44,051 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,593 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,756 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,061 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,387 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,860 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,275 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,288 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 492,584 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,057 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,243 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,521 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,619 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,382 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,044 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,979 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,291 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,183 |
| South America Flags Map Quiz | 0 | - | 4.95 | 87,491 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 218,790 |
| Names of Generations | 0 | - | 4.10 | 42,985 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,910 |
| Most Common High School Mascots | 0 | - | 4.47 | 32,022 |
| American Founding Fathers | 0 | - | 4.42 | 23,186 |
| History of Florida | 0 | - | 4.45 | 9,801 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,091 |
| Hawaiian Islands | 0 | - | 4.83 | 42,613 |
| Boston Red Sox Trivia | 0 | - | 4.09 | 7,530 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,176 |
| History of Texas | 0 | - | 4.43 | 14,594 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,242 |
| American History Quotes #1 | 0 | - | 4.37 | 95,926 |
| People on Money - United States | 0 | - | 4.31 | 63,307 |
| American History Quotes #2 | 0 | - | 4.38 | 41,353 |
| Old West History | 0 | - | 4.33 | 15,252 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,381 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,953 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,514 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,906 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,701 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,202 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,531,513 |
