| U.S. Presidents Quiz | 0 | - | 5.00 | 3,714,326 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,045 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,068 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,915 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,288 |
| Presidential Middle Names | 0 | - | 4.41 | 60,525 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,525 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,751 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,547 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,103 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,356 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,824 |
| U.S. Presidents Who Added the Most Territory | 0 | - | 4.66 | 14,174 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,655 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,312 |
| First Ladies of the United States | 0 | - | 4.28 | 85,808 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,265 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,328 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,281 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,044 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,891 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 28,941 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 24,014 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,610 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,005 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,956 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,728 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,283 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,697 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,757 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,712 |
| The John Adams Presidency | 0 | - | 4.12 | 8,768 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,755 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,881 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,650 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,756 |
| The George Washington Presidency | 0 | - | 4.03 | 14,579 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,344 |
| Vietnam War Countries | 0 | - | 4.82 | 94,451 |
| U.S. President Scramble | 0 | - | 4.40 | 117,247 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,626 |
| The Kennedy Family | 0 | - | 3.90 | 14,086 |
| Presidents that Beat Thomas Jefferson | 0 | - | 4.49 | 25,023 |
| U.S. Senators by State | 0 | - | 4.44 | 40,027 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,565 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,235 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,856 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,476 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,127 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,126 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,278 |
| The American Revolution | 0 | - | 4.52 | 54,308 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,426 |
| United States Map Quiz | 0 | - | 4.98 | 4,165,822 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 631,612 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,183 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,843 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,714 |
| The Barack Obama Presidency | 0 | - | 4.13 | 25,449 |
| Harvard University | 0 | - | 4.15 | 8,314 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,199 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,672 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,516 |
| Presidential Actors | 0 | - | 4.36 | 19,213 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,441 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,380 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,281 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,750 |
| The Iraq War | 0 | - | 4.47 | 15,684 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,700 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,464 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,869 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,720 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,336 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,499 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,527 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,860 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,064 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,605 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,118 |
| US States Quiz | 0 | - | 5.00 | 16,942,942 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,903 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,935 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,197 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,326 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,489 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,284 |
| U.S. States Closest to Moscow | 0 | - | 4.50 | 48,173 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,952 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,178 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,232 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,026 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,096 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,368 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 333,888 |
| Pixelated United States Map | 0 | - | 4.88 | 94,574 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,116 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,126 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,124 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,999 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,841 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,223 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,513 |
| Las Vegas Casinos | 0 | - | 4.13 | 38,106 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,506 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,263 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,313 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,644 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,863 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,879 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,497 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,860 |
| U.S. States By Population | 0 | - | 4.92 | 153,859 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,860 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,674 |
| US States with an Empty Map | 0 | - | 5.00 | 626,792 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,868 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,039 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,623 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,393 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,886 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,388 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,011 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,492 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,716 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,504 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,825 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 54,438 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,416 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,446 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,180 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,631 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,254 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,540 |
| The Persian Gulf War | 0 | - | 4.02 | 8,469 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,886 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 55,026 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,216 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,514 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,287 |
| Rivers of the United States | 0 | - | 4.93 | 66,437 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,856 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,097 |
| American Founding Fathers | 0 | - | 4.42 | 23,250 |
| American Revolution Decoder | 0 | - | 4.10 | 20,976 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,785 |
| California A-Z | 0 | - | 4.49 | 28,818 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 47,076 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,386 |
| People on Money - United States | 0 | - | 4.31 | 63,391 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,539 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,154 |
| Events in U.S. History | 0 | - | 4.41 | 28,758 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,153 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,762 |
| The Most Recent... United States | 0 | - | 4.46 | 18,523 |
| The American Civil War | 0 | - | 4.62 | 52,546 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 508,552 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,506 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,982 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,765 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,812 |
| Draw All US State Borders | 0 | - | 4.99 | 139,307 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,453 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,119 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,494 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,054 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,677 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 62,068 |
| Merged U.S. States | 0 | - | 4.37 | 44,296 |
| Draw All US State Borders - Extreme | 0 | - | 4.99 | 78,915 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,587 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,719 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,795 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,273 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,325 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,355 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,854 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 494,205 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 237,898 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,979 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,248 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 83,126 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,660 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,650 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,904 |
| South America Flags Map Quiz | 0 | - | 4.95 | 88,529 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 221,368 |
| Names of Generations | 0 | - | 4.09 | 45,301 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,454 |
| Most Common High School Mascots | 0 | - | 4.47 | 32,230 |
| History of Florida | 0 | - | 4.45 | 9,857 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,121 |
| Hawaiian Islands | 0 | - | 4.83 | 42,823 |
| Boston Red Sox Trivia | 0 | - | 4.09 | 7,565 |
| Top 10 Boston Celtics Players | 0 | - | 4.05 | 23,888 |
| Boston Celtics Trivia | 0 | - | 4.12 | 15,120 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,244 |
| History of Texas | 0 | - | 4.43 | 14,668 |
| History of Pennsylvania | 0 | - | 4.16 | 7,153 |
