| U.S. Presidents Quiz | 0 | - | 5.00 | 3,168,086 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 166,951 |
| U.S. Vice Presidents | 0 | - | 4.42 | 119,452 |
| U.S. Presidential Trivia #1 | 0 | - | 4.51 | 96,889 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.56 | 81,532 |
| U.S. Presidential Trivia #2 | 0 | - | 4.51 | 39,686 |
| Assassinated U.S. Presidents | 0 | - | 4.54 | 79,990 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 33,532 |
| Name a Valid U.S. President #2 | 0 | - | 4.52 | 61,134 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 352,894 |
| Governors Who Ran For President | 0 | - | 4.47 | 18,888 |
| U.S. Presidents by Event | 0 | - | 4.58 | 29,091 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 25,689 |
| First Ladies of the United States | 0 | - | 4.27 | 79,854 |
| Presidential Middle Names | 0 | - | 4.37 | 56,082 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 24,835 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.31 | 64,257 |
| Random U.S. Vice President to President | 0 | - | 4.57 | 23,192 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.63 | 13,881 |
| Add a Letter - Make a U.S. President | 0 | - | 4.66 | 21,898 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.41 | 22,513 |
| U.S. Presidents Who Died in Office | 0 | - | 4.75 | 31,202 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 394,330 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 45,084 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 12,864 |
| The John Adams Presidency | 0 | - | 4.10 | 7,966 |
| The Theodore Roosevelt Presidency | 0 | - | 4.31 | 7,139 |
| U.S. Vice Presidential Trivia | 0 | - | 4.29 | 11,390 |
| Play-Doh Presidents | 0 | - | 5.00 | 74,500 |
| The George Washington Presidency | 0 | - | 4.02 | 13,626 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.33 | 10,687 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.32 | 16,795 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.32 | 20,502 |
| Vietnam War Countries | 0 | - | 4.81 | 86,403 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.44 | 278,764 |
| U.S. President Scramble | 0 | - | 4.39 | 90,773 |
| U.S. Senators by State | 0 | - | 4.49 | 36,118 |
| U.S. Presidents True or False | 0 | - | 3.94 | 14,586 |
| The Kennedy Family | 0 | - | 3.85 | 13,259 |
| U.S. Presidential Quotes | 0 | - | 4.35 | 42,706 |
| The John F. Kennedy Presidency | 0 | - | 4.45 | 40,949 |
| Deadliest U.S. Wars | 0 | - | 4.83 | 158,011 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 122,481 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.84 | 50,967 |
| Win the U.S. Presidential Election | 0 | - | 4.79 | 508,062 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.75 | 19,254 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.46 | 20,853 |
| The American Revolution | 0 | - | 4.55 | 51,674 |
| Six Flags Over Texas | 0 | - | 4.84 | 58,724 |
| United States Map Quiz | 0 | - | 4.98 | 3,900,697 |
| The George W. Bush Presidency | 0 | - | 4.06 | 30,897 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 37,501 |
| The Barack Obama Presidency | 0 | - | 4.17 | 23,573 |
| Harvard University | 0 | - | 4.15 | 7,726 |
| The Iraq War | 0 | - | 4.43 | 14,357 |
| Third Most Common Language by U.S. State | 0 | - | 4.91 | 106,983 |
| Rust Belt Cities Map Quiz | 0 | - | 4.55 | 32,156 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.43 | 69,068 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.70 | 73,723 |
| Presidential Actors | 0 | - | 4.33 | 17,790 |
| Random U.S. Presidents by Picture | 0 | - | 4.37 | 59,940 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.92 | 49,367 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 76,699 |
| Countries of the Soviet Union | 0 | - | 4.98 | 184,713 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 99,942 |
| U.S. State Border Crossings | 0 | - | 4.96 | 82,062 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 222,046 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.83 | 33,182 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.87 | 65,224 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.52 | 69,999 |
| The Bill Clinton Presidency | 0 | - | 4.18 | 30,165 |
| The George H. W. Bush Presidency | 0 | - | 4.35 | 20,535 |
| The Ronald Reagan Presidency | 0 | - | 4.25 | 23,605 |
| The Richard Nixon Presidency | 0 | - | 4.10 | 20,813 |
| The Jimmy Carter Presidency | 0 | - | 4.39 | 18,033 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.20 | 30,084 |
| Cities and Towns of Massachusetts | 0 | - | 4.89 | 60,273 |
| US States Quiz | 0 | - | 5.00 | 14,725,673 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 339,952 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 133,603 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 62,710 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.93 | 49,179 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 58,654 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 46,378 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 74,453 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.96 | 126,439 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.88 | 50,992 |
| Biggest Spanish Empire Countries | 0 | - | 4.90 | 93,416 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 75,574 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 99,945 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.84 | 54,648 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 67,061 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 93,486 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 67,305 |
| Total United States Immigration by Country | 0 | - | 4.89 | 96,595 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 146,760 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.95 | 184,577 |
| Pixelated United States Map | 0 | - | 4.90 | 82,130 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 93,159 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 78,541 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,312 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 67,562 |
| George Bush... or George Bush | 0 | - | 3.89 | 7,705 |
| Las Vegas Casinos Quiz | 0 | - | 4.09 | 35,260 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.84 | 21,565 |
| U.S. History for Dummies | 0 | - | 4.49 | 65,321 |
| U.S. Civil War Decoder | 0 | - | 4.16 | 24,062 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 100,482 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 96,065 |
| 10 Southernmost U.S. States | 0 | - | 4.84 | 99,129 |
| U.S. States with Short Names | 0 | - | 4.87 | 129,572 |
| U.S. States that Start with M | 0 | - | 4.91 | 150,356 |
| U.S. States By Population | 0 | - | 4.90 | 129,919 |
| U.S. States that Start with N | 0 | - | 4.95 | 155,415 |
| U.S. States with Longest Names | 0 | - | 4.84 | 35,997 |
| 10 Northernmost U.S. States | 0 | - | 4.89 | 73,600 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 77,743 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 58,298 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 56,013 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 145,296 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 167,833 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 99,005 |
| Top 10 Newest U.S. States | 0 | - | 4.81 | 68,055 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 90,189 |
| Ultimate Harry Potter Name Game | 0 | - | 4.95 | 463,528 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 221,998 |
| Vatican City Country Quiz | 0 | - | 4.49 | 39,100 |
| Most-Visited Countries by Popes | 0 | - | 4.63 | 63,438 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 60,567 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 71,576 |
| Countries Bordering China Since 1914 | 0 | - | 4.91 | 87,679 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 77,858 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 34,995 |
| Rivers of the United States | 0 | - | 4.91 | 56,892 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.95 | 273,637 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 124,358 |
| Countries that Beat the United States | 0 | - | 4.92 | 145,548 |
| American Revolution Decoder | 0 | - | 4.12 | 19,982 |
| Countries Closest to Alaska | 0 | - | 4.93 | 98,937 |
| California A-Z | 0 | - | 4.48 | 27,808 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.33 | 41,753 |
| Countries Closest to Maine | 0 | - | 4.85 | 58,895 |
| The American Civil War | 0 | - | 4.72 | 49,003 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 458,831 |
| Louisiana Purchase with a Map | 0 | - | 4.95 | 36,077 |
| US States with an Empty Map | 0 | - | 5.00 | 553,566 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 184,585 |
| Great Plains States and Provinces on a Map | 0 | - | 4.94 | 37,943 |
| U.S. States with the Longest International Borders | 0 | - | 4.81 | 40,634 |
| Top 10 Coldest U.S. States | 0 | - | 4.91 | 100,105 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 100,631 |
| Top 10 Most Native American U.S. States | 0 | - | 4.84 | 71,226 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.89 | 89,379 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 73,136 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 57,088 |
| Merged U.S. States | 0 | - | 4.38 | 40,309 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 71,130 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 115,997 |
| Countries that Bordered the USSR | 0 | - | 4.94 | 150,550 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 88,665 |
| Biggest Roman Empire Countries | 0 | - | 4.88 | 81,978 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 399,308 |
| Countries of Asia in 1900 | 0 | - | 4.49 | 53,349 |
| The Persian Gulf War | 0 | - | 3.98 | 7,693 |
| The Vietnam War | 0 | - | 4.41 | 32,806 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 48,314 |
| Random American Countries on a Map | 0 | - | 4.95 | 86,071 |
| South America Flags Map Quiz | 0 | - | 4.95 | 70,727 |
| Most-Spoken Languages of the United States | 0 | - | 4.45 | 163,606 |
| Countries Closest to United States A-Z | 0 | - | 4.86 | 107,311 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.33 | 10,353 |
| History of Florida | 0 | - | 4.44 | 8,714 |
| The Life of Martin Luther King Jr. | 0 | - | 4.79 | 10,355 |
| Hawaiian Islands | 0 | - | 4.85 | 38,480 |
| Hawaiian Islands Map Quiz | 0 | - | 4.88 | 20,987 |
| Boston Red Sox Trivia | 0 | - | 4.12 | 6,754 |
| New York Yankees Trivia | 0 | - | 4.36 | 5,993 |
| History of Texas | 0 | - | 4.41 | 13,482 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 57,819 |
| American History Quotes #1 | 0 | - | 4.40 | 91,362 |
| People on Money - United States | 0 | - | 4.31 | 61,764 |
| American History Quotes #2 | 0 | - | 4.34 | 39,218 |
| Old West History | 0 | - | 4.28 | 14,784 |
| U.S. History Groups of Two | 0 | - | 4.27 | 35,305 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 41,252 |
| Life of Benjamin Franklin | 0 | - | 4.18 | 6,221 |
| American Revolution - Multiple Choice | 0 | - | 4.32 | 18,798 |
| Last Names in U.S. History #1 | 0 | - | 4.24 | 34,237 |
| Last Names in U.S. History #2 | 0 | - | 4.41 | 15,971 |
| Fifty US States in One Minute | 0 | - | 4.55 | 3,242,185 |
| U.S. State Flags | 0 | - | 4.88 | 136,275 |
| U.S. States that Border Canada | 0 | - | 4.90 | 165,792 |
| Category Elimination - U.S. States #1 | 0 | - | 4.90 | 194,758 |
| Cartoon Versions of U.S. States | 0 | - | 4.84 | 51,915 |
| U.S. State Birds Quiz | 0 | - | 4.35 | 20,544 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.82 | 90,934 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 51,919 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 147,829 |
| Countries of the German Empire | 0 | - | 4.50 | 33,650 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.96 | 56,614 |
