| U.S. Presidents Quiz | 0 | - | 5.00 | 3,229,147 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 170,277 |
| U.S. Vice Presidents | 0 | - | 4.42 | 122,114 |
| U.S. Presidential Trivia #1 | 0 | - | 4.52 | 98,686 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.57 | 83,272 |
| U.S. Presidential Trivia #2 | 0 | - | 4.51 | 45,466 |
| Assassinated U.S. Presidents | 0 | - | 4.54 | 81,049 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 33,821 |
| Name a Valid U.S. President #2 | 0 | - | 4.52 | 62,352 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 357,240 |
| Governors Who Ran For President | 0 | - | 4.47 | 19,014 |
| U.S. Presidents by Event | 0 | - | 4.58 | 29,460 |
| First Ladies of the United States | 0 | - | 4.27 | 80,758 |
| Presidential Middle Names | 0 | - | 4.37 | 56,557 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 25,000 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 66,376 |
| Random U.S. Vice President to President | 0 | - | 4.55 | 28,395 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.63 | 14,188 |
| Add a Letter - Make a U.S. President | 0 | - | 4.66 | 22,261 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.41 | 22,678 |
| U.S. Presidents Who Died in Office | 0 | - | 4.76 | 31,549 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 398,848 |
| People in Pictures with Barack Obama | 0 | - | 4.11 | 45,450 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.51 | 25,840 |
| U.S. Presidential Running Mates | 0 | - | 4.39 | 26,183 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 12,958 |
| The John Adams Presidency | 0 | - | 4.10 | 8,056 |
| The Theodore Roosevelt Presidency | 0 | - | 4.33 | 7,191 |
| U.S. Vice Presidential Trivia | 0 | - | 4.31 | 11,645 |
| Play-Doh Presidents | 0 | - | 5.00 | 76,167 |
| The George Washington Presidency | 0 | - | 4.02 | 13,736 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.34 | 10,776 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.32 | 16,978 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.32 | 20,666 |
| Vietnam War Countries | 0 | - | 4.81 | 87,481 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.43 | 282,996 |
| U.S. President Scramble | 0 | - | 4.42 | 108,012 |
| George Washington... or George W. Bush? | 0 | - | 4.14 | 11,461 |
| U.S. Senators by State | 0 | - | 4.49 | 36,808 |
| U.S. Presidents True or False | 0 | - | 3.94 | 14,709 |
| The Kennedy Family | 0 | - | 3.84 | 13,405 |
| U.S. Presidential Quotes | 0 | - | 4.36 | 42,941 |
| The John F. Kennedy Presidency | 0 | - | 4.45 | 41,306 |
| Deadliest U.S. Wars | 0 | - | 4.83 | 160,127 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 123,353 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.84 | 51,603 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 523,764 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.73 | 19,370 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.47 | 21,217 |
| The American Revolution | 0 | - | 4.55 | 52,069 |
| Six Flags Over Texas | 0 | - | 4.84 | 59,442 |
| United States Map Quiz | 0 | - | 4.98 | 3,935,168 |
| The George W. Bush Presidency | 0 | - | 4.06 | 31,064 |
| People in Pictures with Ronald Reagan | 0 | - | 4.36 | 37,991 |
| The Barack Obama Presidency | 0 | - | 4.17 | 23,802 |
| Harvard University | 0 | - | 4.15 | 7,812 |
| The Iraq War | 0 | - | 4.45 | 14,530 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 108,242 |
| Rust Belt Cities Map Quiz | 0 | - | 4.56 | 32,638 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.43 | 70,031 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.70 | 74,826 |
| Presidential Actors | 0 | - | 4.34 | 18,013 |
| Random U.S. Presidents by Picture | 0 | - | 4.37 | 60,950 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.92 | 51,874 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 78,324 |
| Countries of the Soviet Union | 0 | - | 4.98 | 186,423 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 100,661 |
| U.S. State Border Crossings | 0 | - | 4.96 | 83,031 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 224,338 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 66,525 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.52 | 70,848 |
| The Bill Clinton Presidency | 0 | - | 4.18 | 30,338 |
| The George H. W. Bush Presidency | 0 | - | 4.35 | 20,664 |
| The Ronald Reagan Presidency | 0 | - | 4.25 | 23,774 |
| The Richard Nixon Presidency | 0 | - | 4.10 | 20,976 |
| The Jimmy Carter Presidency | 0 | - | 4.39 | 18,181 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.20 | 30,725 |
| Cities and Towns of Massachusetts | 0 | - | 4.90 | 62,359 |
| US States Quiz | 0 | - | 5.00 | 15,011,514 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 343,563 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 135,909 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 64,592 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.94 | 51,215 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 60,382 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 47,595 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 75,359 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 129,222 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.90 | 52,328 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 95,496 |
| Countries of Iberia in History with a Map | 0 | - | 4.82 | 35,013 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.96 | 77,132 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 102,473 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.84 | 55,903 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 67,778 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 95,335 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 68,209 |
| Total United States Immigration by Country | 0 | - | 4.90 | 98,300 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 149,604 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.94 | 189,318 |
| Pixelated United States Map | 0 | - | 4.90 | 83,821 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 95,448 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 80,423 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,472 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 68,156 |
| George Bush... or George Bush | 0 | - | 3.89 | 7,764 |
| Las Vegas Casinos Quiz | 0 | - | 4.07 | 36,694 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.85 | 22,562 |
| U.S. History for Dummies | 0 | - | 4.50 | 66,379 |
| U.S. Civil War Decoder | 0 | - | 4.17 | 24,240 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 102,193 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 97,892 |
| 10 Southernmost U.S. States | 0 | - | 4.86 | 100,867 |
| U.S. States with Short Names | 0 | - | 4.87 | 132,181 |
| U.S. States that Start with M | 0 | - | 4.91 | 152,768 |
| U.S. States By Population | 0 | - | 4.90 | 131,516 |
| U.S. States that Start with N | 0 | - | 4.95 | 157,521 |
| U.S. States with Longest Names | 0 | - | 4.84 | 36,880 |
| 10 Northernmost U.S. States | 0 | - | 4.89 | 74,793 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 79,044 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 59,031 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 57,164 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 146,917 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 168,848 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 99,887 |
| Top 10 Least Obese U.S. States | 0 | - | 4.81 | 69,402 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 91,413 |
| Ultimate Harry Potter Name Game | 0 | - | 4.95 | 467,837 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 224,401 |
| Vatican City Country Quiz | 0 | - | 4.50 | 40,081 |
| Most-Visited Countries by Popes | 0 | - | 4.65 | 77,617 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 61,874 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 73,138 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 88,666 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 79,367 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 35,467 |
| Rivers of the United States | 0 | - | 4.92 | 58,168 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.96 | 282,485 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 126,195 |
| Countries that Beat the United States | 0 | - | 4.92 | 148,272 |
| American Revolution Decoder | 0 | - | 4.12 | 20,122 |
| Countries Closest to Alaska | 0 | - | 4.92 | 100,429 |
| California A-Z | 0 | - | 4.48 | 27,951 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.34 | 42,695 |
| Countries Closest to Maine | 0 | - | 4.86 | 59,947 |
| Embarrassing Chapters in US History | 0 | - | 4.15 | 31,683 |
| The American Civil War | 0 | - | 4.74 | 49,507 |
| Word Scramble - U.S. States | 0 | - | 4.96 | 464,760 |
| Louisiana Purchase with a Map | 0 | - | 4.95 | 37,416 |
| US States with an Empty Map | 0 | - | 5.00 | 563,296 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 187,777 |
| Great Plains States and Provinces on a Map | 0 | - | 4.94 | 39,361 |
| Draw All US State Borders | 0 | - | 4.99 | 98,782 |
| U.S. States with the Longest International Borders | 0 | - | 4.81 | 42,527 |
| Top 10 Coldest U.S. States | 0 | - | 4.92 | 102,373 |
| Top 10 Hottest U.S. States | 0 | - | 4.89 | 111,833 |
| Top 10 Most Native American U.S. States | 0 | - | 4.84 | 72,796 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 91,124 |
| U.S. States with the Most Immigrants | 0 | - | 4.86 | 74,554 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 57,619 |
| Merged U.S. States | 0 | - | 4.40 | 40,855 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 73,082 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 117,449 |
| Countries that Bordered the USSR | 0 | - | 4.94 | 154,600 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 90,754 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 404,871 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.90 | 31,630 |
| Countries of Asia in 1900 | 0 | - | 4.49 | 54,098 |
| The Persian Gulf War | 0 | - | 4.00 | 7,794 |
| The Vietnam War | 0 | - | 4.41 | 33,199 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 49,169 |
| Random American Countries on a Map | 0 | - | 4.96 | 87,917 |
| South America Flags Map Quiz | 0 | - | 4.95 | 73,146 |
| Most-Spoken Languages of the United States | 0 | - | 4.45 | 165,737 |
| Countries Closest to United States A-Z | 0 | - | 4.84 | 108,664 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.33 | 10,538 |
| History of Florida | 0 | - | 4.44 | 8,853 |
| The Life of Martin Luther King Jr. | 0 | - | 4.80 | 10,460 |
| Hawaiian Islands | 0 | - | 4.86 | 38,945 |
| Boston Red Sox Trivia | 0 | - | 4.03 | 6,840 |
| New York Yankees Trivia | 0 | - | 4.26 | 6,198 |
| History of Texas | 0 | - | 4.41 | 13,628 |
| U.S. States that Border Tennessee | 0 | - | 4.84 | 58,112 |
| American History Quotes #1 | 0 | - | 4.40 | 92,073 |
| People on Money - United States | 0 | - | 4.31 | 61,995 |
| American History Quotes #2 | 0 | - | 4.38 | 39,527 |
| Old West History | 0 | - | 4.29 | 14,838 |
| U.S. History Groups of Two | 0 | - | 4.25 | 42,113 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.18 | 41,724 |
| Life of Benjamin Franklin | 0 | - | 4.20 | 6,257 |
| American Revolution - Multiple Choice | 0 | - | 4.32 | 18,980 |
| Last Names in U.S. History #1 | 0 | - | 4.24 | 34,493 |
| Last Names in U.S. History #2 | 0 | - | 4.42 | 16,222 |
| Fifty US States in One Minute | 0 | - | 4.57 | 3,290,749 |
| U.S. State Flags | 0 | - | 4.88 | 140,606 |
| U.S. States that Border Canada | 0 | - | 4.90 | 167,229 |
| Category Elimination - U.S. States #1 | 0 | - | 4.90 | 197,803 |
| Cartoon Versions of U.S. States | 0 | - | 4.82 | 53,304 |
| U.S. State Birds Quiz | 0 | - | 4.35 | 20,674 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.82 | 91,574 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 52,552 |
