| U.S. Presidents Quiz | 0 | - | 5.00 | 3,169,446 |
| American Revolution Decoder | 0 | - | 4.12 | 19,987 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 352,991 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 167,050 |
| Vietnam War Countries | 0 | - | 4.81 | 86,422 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 122,502 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.96 | 126,518 |
| The American Revolution | 0 | - | 4.51 | 51,683 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 99,970 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 98,433 |
| U.S. Vice Presidents | 0 | - | 4.42 | 119,506 |
| U.S. Presidential Trivia #1 | 0 | - | 4.51 | 96,932 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.56 | 81,568 |
| U.S. Presidential Trivia #2 | 0 | - | 4.51 | 39,707 |
| Assassinated U.S. Presidents | 0 | - | 4.54 | 80,012 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 33,534 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.97 | 178,149 |
| Name a Valid U.S. President #2 | 0 | - | 4.52 | 61,183 |
| Six Flags Over Texas | 0 | - | 4.84 | 58,746 |
| Deadliest U.S. Wars | 0 | - | 4.83 | 158,049 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 218,551 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 273,876 |
| Countries of the German Empire | 0 | - | 4.50 | 33,666 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 394,423 |
| Governors Who Ran For President | 0 | - | 4.47 | 18,890 |
| U.S. Presidents by Event | 0 | - | 4.58 | 29,091 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 25,699 |
| First Ladies of the United States | 0 | - | 4.27 | 79,878 |
| Presidential Middle Names | 0 | - | 4.37 | 56,091 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 24,836 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.31 | 64,303 |
| Random U.S. Vice President to President | 0 | - | 4.57 | 23,208 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.63 | 13,895 |
| Add a Letter - Make a U.S. President | 0 | - | 4.66 | 21,908 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 147,887 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 399,475 |
| United States Map Quiz | 0 | - | 4.98 | 3,901,549 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.41 | 22,515 |
| U.S. Presidents Who Died in Office | 0 | - | 4.75 | 31,208 |
| Play-Doh Presidents | 0 | - | 5.00 | 74,525 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 45,091 |
| American Founding Fathers | 0 | - | 4.36 | 22,087 |
| Countries of Europe After World War II | 0 | - | 4.98 | 170,810 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 139,405 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 76,751 |
| U.S. State Border Crossings | 0 | - | 4.96 | 82,080 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 222,085 |
| Third Most Common Language by U.S. State | 0 | - | 4.91 | 107,031 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.83 | 33,221 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 65,262 |
| U.S. Bill of Rights | 0 | - | 4.56 | 31,068 |
| U.S. Presidential Quotes | 0 | - | 4.36 | 42,710 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.44 | 278,881 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 12,866 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 37,511 |
| The John Adams Presidency | 0 | - | 4.10 | 7,967 |
| The Theodore Roosevelt Presidency | 0 | - | 4.31 | 7,140 |
| U.S. Vice Presidential Trivia | 0 | - | 4.29 | 11,401 |
| Random U.S. Presidents by Picture | 0 | - | 4.37 | 59,960 |
| Cities and Towns of Massachusetts | 0 | - | 4.89 | 60,310 |
| US States Quiz | 0 | - | 5.00 | 14,732,794 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 340,050 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.92 | 49,455 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 133,649 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 62,752 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.93 | 49,230 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 58,698 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 46,404 |
| Biggest Spanish Empire Countries | 0 | - | 4.90 | 93,481 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 100,014 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.84 | 54,682 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 67,087 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 93,524 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 67,343 |
| Total United States Immigration by Country | 0 | - | 4.89 | 96,643 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 146,842 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.95 | 184,694 |
| Pixelated United States Map | 0 | - | 4.90 | 82,155 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 93,226 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 78,599 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 67,572 |
| Win the U.S. Presidential Election | 0 | - | 4.79 | 508,439 |
| The Bill Clinton Presidency | 0 | - | 4.18 | 30,167 |
| The George H. W. Bush Presidency | 0 | - | 4.35 | 20,536 |
| The Ronald Reagan Presidency | 0 | - | 4.25 | 23,606 |
| The Richard Nixon Presidency | 0 | - | 4.10 | 20,820 |
| The Jimmy Carter Presidency | 0 | - | 4.39 | 18,035 |
| The George Washington Presidency | 0 | - | 4.02 | 13,628 |
| U.S. President Scramble | 0 | - | 4.37 | 90,815 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.33 | 10,688 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.32 | 16,799 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.32 | 20,508 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.83 | 21,584 |
| U.S. History for Dummies | 0 | - | 4.49 | 65,342 |
| Biggest Cities in the Confederate States in 1860 | 0 | - | 4.39 | 22,314 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 100,507 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 96,123 |
| 10 Southernmost U.S. States | 0 | - | 4.84 | 99,174 |
| U.S. States with Short Names | 0 | - | 4.87 | 129,627 |
| U.S. States that Start with M | 0 | - | 4.91 | 150,397 |
| U.S. States By Population | 0 | - | 4.90 | 129,960 |
| U.S. States that Start with N | 0 | - | 4.95 | 155,458 |
| U.S. States with Longest Names | 0 | - | 4.84 | 36,018 |
| US States with an Empty Map | 0 | - | 5.00 | 553,807 |
| 10 Northernmost U.S. States | 0 | - | 4.89 | 73,635 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 77,778 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 58,322 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 56,045 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 145,321 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 167,858 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 99,022 |
| Top 10 Newest U.S. States | 0 | - | 4.81 | 68,073 |
| Top 10 Least Obese U.S. States | 0 | - | 4.81 | 68,098 |
| Countries of the Italian Empire | 0 | - | 4.21 | 25,402 |
| Biggest Roman Empire Countries | 0 | - | 4.88 | 82,000 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 90,217 |
| Ultimate Harry Potter Name Game | 0 | - | 4.95 | 463,633 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 222,074 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 60,604 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 71,619 |
| The Vietnam War | 0 | - | 4.41 | 32,815 |
| Countries Bordering China Since 1914 | 0 | - | 4.91 | 87,719 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 77,901 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 35,004 |
| Rivers of the United States | 0 | - | 4.91 | 56,944 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.95 | 273,861 |
| Countries Closest to United States A-Z | 0 | - | 4.84 | 107,344 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 124,395 |
| Countries that Beat the United States | 0 | - | 4.92 | 145,615 |
| Arms Exports - United States | 0 | - | 4.64 | 48,750 |
| U.S. Senators by State | 0 | - | 4.49 | 36,129 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.43 | 69,088 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.70 | 73,750 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.52 | 70,017 |
| U.S. Presidents by State | 0 | - | 4.29 | 65,931 |
| Movies with America in the Title | 0 | - | 4.17 | 28,157 |
| Countries Closest to Alaska | 0 | - | 4.93 | 98,962 |
| Stephen Curry Quiz | 0 | - | 4.34 | 58,859 |
| History of Florida | 0 | - | 4.44 | 8,717 |
| Hawaiian Islands | 0 | - | 4.85 | 38,489 |
| Hawaiian Islands Map Quiz | 0 | - | 4.88 | 20,989 |
| Countries Closest to Maine | 0 | - | 4.85 | 58,912 |
| Harvard University | 0 | - | 4.15 | 7,728 |
| History of Texas | 0 | - | 4.41 | 13,483 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 57,825 |
| American History Quotes #1 | 0 | - | 4.40 | 91,373 |
| People on Money - United States | 0 | - | 4.31 | 61,770 |
| American History Quotes #2 | 0 | - | 4.34 | 39,222 |
| U.S. History Groups of Two | 0 | - | 4.27 | 35,319 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 41,265 |
| Last Names in U.S. History #1 | 0 | - | 4.24 | 34,243 |
| Last Names in U.S. History #2 | 0 | - | 4.41 | 15,975 |
| The American Civil War | 0 | - | 4.72 | 49,015 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 458,979 |
| U.S. State Flags | 0 | - | 4.88 | 136,353 |
| U.S. States that Border Canada | 0 | - | 4.90 | 165,818 |
| Louisiana Purchase with a Map | 0 | - | 4.95 | 36,119 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 184,684 |
| Great Plains States and Provinces on a Map | 0 | - | 4.94 | 37,977 |
| Cartoon Versions of U.S. States | 0 | - | 4.84 | 51,948 |
| U.S. States with the Longest International Borders | 0 | - | 4.81 | 40,677 |
| Top 10 Coldest U.S. States | 0 | - | 4.91 | 100,237 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 100,677 |
| Top 10 Most Native American U.S. States | 0 | - | 4.84 | 71,258 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.89 | 89,415 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 73,154 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 57,099 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.82 | 90,956 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 51,935 |
| Name a Valid U.S. President by Birth State | 0 | - | 4.53 | 8,452 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 71,155 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 116,031 |
| Countries that Bordered the USSR | 0 | - | 4.95 | 151,916 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 88,737 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.64 | 20,887 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 111,483 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 66,637 |
| Groups of Things - Harry Potter | 0 | - | 4.86 | 260,700 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.90 | 30,875 |
| Countries of the Popes | 0 | - | 4.86 | 108,161 |
| Countries of Asia in 1900 | 0 | - | 4.49 | 53,370 |
| The Iraq War | 0 | - | 4.43 | 14,361 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 48,335 |
| Most-Spoken Languages of the United States | 0 | - | 4.45 | 163,648 |
| Territories of the United States | 0 | - | 4.76 | 48,516 |
| Most Mentioned Enemies of the USA | 0 | - | 4.79 | 159,790 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.38 | 7,878 |
| Major non-NATO U.S. Allies | 0 | - | 4.43 | 33,430 |
| Name a Valid Answer - United States #1 | 0 | - | 4.66 | 85,403 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,319 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.75 | 19,254 |
| U.S. Presidents True or False | 0 | - | 3.94 | 14,588 |
| The John F. Kennedy Presidency | 0 | - | 4.45 | 40,955 |
| The Kennedy Family | 0 | - | 3.85 | 13,264 |
| Star-Spangled Banner Quiz | 0 | - | 4.37 | 169,776 |
| America the Beautiful Lyrics | 0 | - | 4.26 | 19,184 |
| LeBron... or Kobe? | 0 | - | 4.15 | 53,437 |
| History of Pennsylvania | 0 | - | 4.09 | 6,434 |
| History of Virginia | 0 | - | 4.33 | 10,935 |
| Old West History | 0 | - | 4.28 | 14,785 |
