| U.S. Presidents Quiz | 0 | - | 5.00 | 3,667,789 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,422 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,440 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,163 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,777 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,220 |
| Presidential Middle Names | 0 | - | 4.41 | 59,853 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,903 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,030 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,236 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,815 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,591 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,101 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,187 |
| First Ladies of the United States | 0 | - | 4.28 | 85,329 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,145 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,576 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,053 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,865 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,661 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,720 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,847 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,556 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,752 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,896 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,629 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,227 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,530 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,675 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,544 |
| The John Adams Presidency | 0 | - | 4.12 | 8,697 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,702 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,798 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,850 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,924 |
| The George Washington Presidency | 0 | - | 4.03 | 14,493 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,253 |
| Vietnam War Countries | 0 | - | 4.83 | 93,806 |
| U.S. President Scramble | 0 | - | 4.40 | 116,378 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,548 |
| U.S. Senators by State | 0 | - | 4.45 | 39,816 |
| The Kennedy Family | 0 | - | 3.90 | 14,039 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,388 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,110 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,545 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,595 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,830 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,705 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 621,060 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,059 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,975 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,513 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,068 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,292 |
| The American Revolution | 0 | - | 4.52 | 54,121 |
| United States Map Quiz | 0 | - | 4.98 | 4,146,257 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,419 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 65,939 |
| Harvard University | 0 | - | 4.15 | 8,275 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,361 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,388 |
| The Iraq War | 0 | - | 4.47 | 15,581 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,478 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 34,940 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,251 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,023 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,001 |
| Presidential Actors | 0 | - | 4.36 | 19,097 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,382 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,439 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,746 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,944 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,072 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,092 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,388 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,179 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,114 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,449 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,641 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,895 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,066 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,560 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 241,802 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 329,196 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,923 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,616 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,686 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,184 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,299 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,820 |
| Las Vegas Casinos | 0 | - | 4.12 | 37,991 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,633 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,211 |
| US States Quiz | 0 | - | 5.00 | 16,752,988 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,830 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,317 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,712 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,795 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,369 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,259 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,606 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,293 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,661 |
| The Persian Gulf War | 0 | - | 4.02 | 8,418 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,869 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,897 |
| Pixelated United States Map | 0 | - | 4.89 | 93,709 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,822 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,124 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,695 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,963 |
| American Revolution Decoder | 0 | - | 4.10 | 20,894 |
| California A-Z | 0 | - | 4.49 | 28,735 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,632 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,100 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,032 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,652 |
| The Most Recent... United States | 0 | - | 4.45 | 18,341 |
| The American Civil War | 0 | - | 4.62 | 52,236 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,144 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 503,377 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,754 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,768 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,130 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,385 |
| U.S. States By Population | 0 | - | 4.92 | 152,656 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,735 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,069 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,941 |
| US States with an Empty Map | 0 | - | 5.00 | 620,569 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,048 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,822 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,914 |
| Draw All US State Borders | 0 | - | 4.99 | 134,699 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,139 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,303 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,225 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,673 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,167 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,806 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,279 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,101 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,002 |
| Merged U.S. States | 0 | - | 4.36 | 43,951 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,124 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,339 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,749 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,026 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,246 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,551 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,276 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,721 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,020 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,710 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,110 |
| Most-Visited Countries by Popes | 0 | - | 4.55 | 83,339 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,409 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,393 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,873 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,449 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,689 |
| Random American Countries on a Map | 0 | - | 4.96 | 98,910 |
| South America Flags Map Quiz | 0 | - | 4.95 | 87,018 |
| Rivers of the United States | 0 | - | 4.93 | 65,715 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,696 |
| American Founding Fathers | 0 | - | 4.41 | 23,094 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,653 |
| History of Florida | 0 | - | 4.45 | 9,782 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,073 |
| Hawaiian Islands | 0 | - | 4.83 | 42,516 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,656 |
| Boston Red Sox Trivia | 0 | - | 4.09 | 7,512 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,147 |
| History of Texas | 0 | - | 4.43 | 14,571 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,177 |
| American History Quotes #1 | 0 | - | 4.37 | 95,759 |
| People on Money - United States | 0 | - | 4.31 | 63,241 |
| American History Quotes #2 | 0 | - | 4.38 | 41,255 |
| Old West History | 0 | - | 4.33 | 15,235 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,306 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,784 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,504 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,876 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,664 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,124 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,524,204 |
| U.S. State Flags | 0 | - | 4.89 | 168,256 |
| U.S. States that Border Canada | 0 | - | 4.91 | 183,260 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,326 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,321 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,214 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,024 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,850 |
| Random U.S. States on a Map | 0 | - | 4.96 | 622,976 |
| U.S. State Birds | 0 | - | 4.31 | 21,354 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,111 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,950 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,379 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,652 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,812 |
