| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,465 |
| Vietnam War Countries | 0 | - | 4.82 | 94,436 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,713,379 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,520 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,906 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,984 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,630 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,908 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,029 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,570 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,739 |
| Random U.S. States on a Map | 0 | - | 4.96 | 628,513 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,424 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,045 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,885 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,262 |
| Presidential Middle Names | 0 | - | 4.41 | 60,514 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 24,010 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,514 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,738 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,095 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,538 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,344 |
| American Founding Fathers | 0 | - | 4.42 | 23,250 |
| American Revolution Decoder | 0 | - | 4.10 | 20,976 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,388 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,132 |
| The Iraq War | 0 | - | 4.47 | 15,682 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,728 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,332 |
| United States Map Quiz | 0 | - | 4.98 | 4,165,439 |
| Arms Exports - United States | 0 | - | 4.77 | 62,589 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,636 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,306 |
| First Ladies of the United States | 0 | - | 4.28 | 85,798 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,262 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,752 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,326 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,275 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,038 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,849 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,311 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,686 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,820 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,885 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,340 |
| The Persian Gulf War | 0 | - | 4.02 | 8,468 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,846 |
| Presidents that Beat Thomas Jefferson | 0 | - | 4.49 | 25,019 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,232 |
| U.S. President Scramble | 0 | - | 4.40 | 117,222 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,269 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 28,935 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,993 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,849 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,259 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,935 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,684 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,211 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,423 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,997 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,701 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,068 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,292 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,991 |
| U.S. Senators by State | 0 | - | 4.44 | 40,021 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,691 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,126 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,757 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,696 |
| 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 | 12,878 |
| The Kennedy Family | 0 | - | 3.90 | 14,084 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,578 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,497 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,098 |
| US States Quiz | 0 | - | 5.00 | 16,939,002 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,004 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,899 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,080 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,285 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,464 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,267 |
| Countries of the German Empire | 0 | - | 4.51 | 38,070 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,415 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,207 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,623 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,196 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,854 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,780 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,283 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 333,819 |
| Pixelated United States Map | 0 | - | 4.88 | 94,544 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,084 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,102 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,832 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,019 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 631,400 |
| Presidential Actors | 0 | - | 4.36 | 19,210 |
| The George Washington Presidency | 0 | - | 4.03 | 14,577 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,955 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,724 |
| The Barack Obama Presidency | 0 | - | 4.13 | 25,446 |
| California A-Z | 0 | - | 4.49 | 28,817 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,497 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,250 |
| The Most Recent... United States | 0 | - | 4.46 | 18,520 |
| The American Civil War | 0 | - | 4.62 | 52,538 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,612 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 508,423 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,832 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,838 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,465 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,806 |
| U.S. States By Population | 0 | - | 4.92 | 153,832 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,840 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,659 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,961 |
| US States with an Empty Map | 0 | - | 5.00 | 626,664 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,849 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,367 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,605 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,383 |
| Draw All US State Borders | 0 | - | 4.99 | 139,207 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,867 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,375 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,998 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,474 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,711 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,492 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,033 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,666 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,808 |
| Draw All US State Borders - Extreme | 0 | - | 4.99 | 78,889 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,556 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,681 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,764 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,235 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 54,421 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,395 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,163 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,611 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,836 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 237,865 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,746 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,199 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,860 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,647 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 55,011 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,628 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,495 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,279 |
| Rivers of the United States | 0 | - | 4.93 | 66,427 |
| Names of Generations | 0 | - | 4.09 | 45,289 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,439 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,668 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,507 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,330 |
| Movies with America in the Title | 0 | - | 4.17 | 28,777 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,758 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 47,060 |
| History of Florida | 0 | - | 4.45 | 9,852 |
| Hawaiian Islands | 0 | - | 4.83 | 42,812 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,365 |
| Harvard University | 0 | - | 4.15 | 8,314 |
| History of Texas | 0 | - | 4.43 | 14,666 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,420 |
| American History Quotes #1 | 0 | - | 4.37 | 96,128 |
| People on Money - United States | 0 | - | 4.31 | 63,390 |
| American History Quotes #2 | 0 | - | 4.38 | 41,465 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,537 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,151 |
| Events in U.S. History | 0 | - | 4.41 | 28,743 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,150 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,755 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,295 |
| U.S. State Flags | 0 | - | 4.89 | 171,700 |
| U.S. States that Border Canada | 0 | - | 4.91 | 185,858 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,502 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,485 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,115 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,712 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,763 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,807 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,435 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,083 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,463 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 62,064 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,295 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,309 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,755 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,097 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,881 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,641 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 83,097 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,338 |
| Biggest Axis-Controlled Cities | 0 | - | 4.44 | 48,959 |
| Flags of WW1 | 0 | - | 4.60 | 38,555 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,890 |
