| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,405 |
| Vietnam War Countries | 0 | - | 4.82 | 94,366 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,709,025 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,104 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,791 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,639 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,487 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,742 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,873 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,557 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,691 |
| Random U.S. States on a Map | 0 | - | 4.96 | 627,864 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,374 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,941 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,732 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 94,014 |
| Presidential Middle Names | 0 | - | 4.41 | 60,419 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,983 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,458 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,672 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,055 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,488 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,335 |
| American Founding Fathers | 0 | - | 4.42 | 23,242 |
| American Revolution Decoder | 0 | - | 4.10 | 20,971 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,143 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,996 |
| The Iraq War | 0 | - | 4.47 | 15,674 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,387 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,224 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,796 |
| Arms Exports - United States | 0 | - | 4.77 | 62,536 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,508 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,281 |
| First Ladies of the United States | 0 | - | 4.28 | 85,749 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,251 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,347 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,281 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,238 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 24,002 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,803 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,302 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,375 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,641 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,857 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,227 |
| The Persian Gulf War | 0 | - | 4.02 | 8,463 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,812 |
| Presidents that Beat Thomas Jefferson | 0 | - | 4.49 | 24,984 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,212 |
| U.S. President Scramble | 0 | - | 4.40 | 117,001 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,225 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 28,900 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,952 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,668 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,817 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,862 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,621 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,122 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,765 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,890 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,623 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,874 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 244,894 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,944 |
| U.S. Senators by State | 0 | - | 4.44 | 40,004 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,678 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,120 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,751 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,673 |
| The John Adams Presidency | 0 | - | 4.12 | 8,762 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,749 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,870 |
| The Kennedy Family | 0 | - | 3.90 | 14,083 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,422 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,409 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,036 |
| US States Quiz | 0 | - | 5.00 | 16,920,663 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,837 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,769 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,517 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,123 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,340 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,153 |
| Countries of the German Empire | 0 | - | 4.51 | 38,022 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,278 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,006 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,487 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,104 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,773 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,716 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,241 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 333,203 |
| Pixelated United States Map | 0 | - | 4.88 | 94,486 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,958 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,002 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,708 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,843 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 630,243 |
| Presidential Actors | 0 | - | 4.36 | 19,200 |
| The George Washington Presidency | 0 | - | 4.03 | 14,569 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,949 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,708 |
| The Barack Obama Presidency | 0 | - | 4.13 | 25,426 |
| California A-Z | 0 | - | 4.49 | 28,807 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,453 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,203 |
| The Most Recent... United States | 0 | - | 4.46 | 18,501 |
| The American Civil War | 0 | - | 4.62 | 52,505 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,139 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,924 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,729 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,681 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,357 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,673 |
| U.S. States By Population | 0 | - | 4.92 | 153,750 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,731 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,604 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,857 |
| US States with an Empty Map | 0 | - | 5.00 | 626,090 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,712 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,336 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,514 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,337 |
| Draw All US State Borders | 0 | - | 4.99 | 138,678 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,801 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,299 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,957 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,428 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,673 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,455 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,950 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,614 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,730 |
| Draw All US State Borders - Extreme | 0 | - | 4.99 | 78,784 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,399 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,532 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,664 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,105 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 54,337 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,313 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,071 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,524 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,749 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,707 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,132 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,117 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,805 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,571 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,963 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,514 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,427 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,275 |
| Rivers of the United States | 0 | - | 4.93 | 66,350 |
| Names of Generations | 0 | - | 4.09 | 45,208 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,353 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,612 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,457 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,293 |
| Movies with America in the Title | 0 | - | 4.17 | 28,772 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,595 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 47,012 |
| History of Florida | 0 | - | 4.45 | 9,843 |
| Hawaiian Islands | 0 | - | 4.83 | 42,780 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,252 |
| Harvard University | 0 | - | 4.15 | 8,305 |
| History of Texas | 0 | - | 4.43 | 14,654 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,387 |
| American History Quotes #1 | 0 | - | 4.37 | 96,104 |
| People on Money - United States | 0 | - | 4.31 | 63,376 |
| American History Quotes #2 | 0 | - | 4.38 | 41,444 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,507 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,124 |
| Events in U.S. History | 0 | - | 4.41 | 28,718 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,134 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,749 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,277 |
| U.S. State Flags | 0 | - | 4.88 | 171,370 |
| U.S. States that Border Canada | 0 | - | 4.91 | 185,602 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,482 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,459 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,103 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,497 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,678 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,763 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,332 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,967 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,355 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 62,012 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,238 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,229 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,684 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,015 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,854 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,549 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 83,004 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,296 |
| Biggest Axis-Controlled Cities | 0 | - | 4.44 | 48,935 |
| Flags of WW1 | 0 | - | 4.60 | 38,507 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,787 |
