| The American Revolution | 0 | - | 4.52 | 54,287 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,387 |
| Vietnam War Countries | 0 | - | 4.82 | 94,344 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,706,843 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,962 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,720 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,524 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,440 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,668 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,810 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,553 |
| Random U.S. States on a Map | 0 | - | 4.96 | 627,646 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,682 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,906 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,682 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 93,968 |
| Presidential Middle Names | 0 | - | 4.41 | 60,387 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,439 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,655 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,476 |
| American Revolution Decoder | 0 | - | 4.10 | 20,969 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,353 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,977 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,042 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,332 |
| American Founding Fathers | 0 | - | 4.42 | 23,235 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,032 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,917 |
| The Iraq War | 0 | - | 4.47 | 15,670 |
| United States Map Quiz | 0 | - | 4.98 | 4,162,943 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,442 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,277 |
| First Ladies of the United States | 0 | - | 4.28 | 85,723 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,243 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,225 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,314 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,233 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,190 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,993 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,792 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,852 |
| Arms Exports - United States | 0 | - | 4.77 | 62,504 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,235 |
| U.S. President Scramble | 0 | - | 4.40 | 116,901 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,214 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,939 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,293 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,245 |
| Category Elimination - U.S. States #2 | 0 | - | 4.83 | 134,559 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,170 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,776 |
| The Persian Gulf War | 0 | - | 4.02 | 8,460 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,586 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,710 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,800 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,588 |
| U.S. Senators by State | 0 | - | 4.44 | 39,995 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,210 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,112 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 28,886 |
| The Kennedy Family | 0 | - | 3.90 | 14,082 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,330 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,019 |
| US States Quiz | 0 | - | 5.00 | 16,911,444 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,581 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,689 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,180 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,038 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,280 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,104 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,840 |
| Countries of the German Empire | 0 | - | 4.51 | 38,009 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,058 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,392 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,745 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,086 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,835 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,795 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 244,728 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 332,956 |
| Pixelated United States Map | 0 | - | 4.88 | 94,428 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,906 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,963 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,929 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 629,674 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,669 |
| Presidential Actors | 0 | - | 4.36 | 19,195 |
| The George Washington Presidency | 0 | - | 4.03 | 14,560 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,747 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,667 |
| The John Adams Presidency | 0 | - | 4.12 | 8,759 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,946 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,747 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,700 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,869 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,363 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,433 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,177 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,108 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,668 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,631 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,280 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,600 |
| U.S. States By Population | 0 | - | 4.92 | 153,714 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,674 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,574 |
| US States with an Empty Map | 0 | - | 5.00 | 625,821 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,677 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,314 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,685 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,470 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,314 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,767 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,249 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,931 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,393 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,654 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,426 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,695 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,269 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,227 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 42,036 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,473 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,937 |
| Prime Ministers of the UK | 0 | - | 4.95 | 439,912 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,432 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,784 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,931 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,272 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,688 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,223 |
| Rivers of the United States | 0 | - | 4.93 | 66,307 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,651 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,778 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,596 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,439 |
| The Barack Obama Presidency | 0 | - | 4.13 | 25,422 |
| Movies with America in the Title | 0 | - | 4.17 | 28,771 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,541 |
| California A-Z | 0 | - | 4.49 | 28,805 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,991 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,239 |
| People on Money - United States | 0 | - | 4.31 | 63,367 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,502 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,115 |
| Events in U.S. History | 0 | - | 4.41 | 28,704 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,132 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,746 |
| The American Civil War | 0 | - | 4.62 | 52,486 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,697 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,470 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,450 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,101 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,815 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,386 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,640 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,742 |
| Draw All US State Borders | 0 | - | 4.99 | 138,459 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,254 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,889 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,298 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,918 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,589 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,984 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,329 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,455 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,612 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,048 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,644 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,835 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,702 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,509 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,647 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,079 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,955 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,275 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,519 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,468 |
| Biggest Axis-Controlled Cities | 0 | - | 4.44 | 48,925 |
| Flags of WW1 | 0 | - | 4.60 | 38,486 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,536 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,739 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 220,681 |
| Names of Generations | 0 | - | 4.09 | 45,156 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,323 |
| Most Common High School Mascots | 0 | - | 4.47 | 32,179 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,102 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,829 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,279 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,617 |
| Star-Spangled Banner Lyrics | 0 | - | 4.36 | 179,499 |
| History of Florida | 0 | - | 4.45 | 9,840 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,110 |
| Hawaiian Islands | 0 | - | 4.83 | 42,766 |
| Harvard University | 0 | - | 4.15 | 8,304 |
| Top 10 Boston Celtics Players | 0 | - | 4.05 | 23,849 |
| Boston Celtics Trivia | 0 | - | 4.12 | 15,079 |
| History of Texas | 0 | - | 4.43 | 14,649 |
| History of Pennsylvania | 0 | - | 4.16 | 7,143 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,367 |
