| U.S. Presidents Quiz | 0 | - | 5.00 | 3,167,157 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 166,864 |
| U.S. Vice Presidents | 0 | - | 4.42 | 119,420 |
| U.S. Presidential Trivia #1 | 0 | - | 4.51 | 96,871 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.56 | 81,501 |
| U.S. Presidential Trivia #2 | 0 | - | 4.51 | 39,670 |
| Assassinated U.S. Presidents | 0 | - | 4.54 | 79,978 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 33,531 |
| Name a Valid U.S. President #2 | 0 | - | 4.52 | 61,090 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 352,849 |
| Governors Who Ran For President | 0 | - | 4.47 | 18,884 |
| U.S. Presidents by Event | 0 | - | 4.58 | 29,088 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 25,683 |
| First Ladies of the United States | 0 | - | 4.27 | 79,849 |
| 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 | 64,237 |
| Random U.S. Vice President to President | 0 | - | 4.57 | 23,186 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.63 | 13,879 |
| Add a Letter - Make a U.S. President | 0 | - | 4.66 | 21,895 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.41 | 22,512 |
| U.S. Presidents Who Died in Office | 0 | - | 4.75 | 31,198 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 394,265 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 45,076 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 12,861 |
| The John Adams Presidency | 0 | - | 4.10 | 7,964 |
| The Theodore Roosevelt Presidency | 0 | - | 4.31 | 7,137 |
| Play-Doh Presidents | 0 | - | 5.00 | 74,482 |
| The George Washington Presidency | 0 | - | 4.02 | 13,624 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.33 | 10,683 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.32 | 16,794 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.32 | 20,500 |
| Vietnam War Countries | 0 | - | 4.81 | 86,372 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.44 | 278,708 |
| U.S. President Scramble | 0 | - | 4.39 | 90,759 |
| U.S. Senators by State | 0 | - | 4.49 | 36,113 |
| U.S. Presidents True or False | 0 | - | 3.94 | 14,585 |
| The Kennedy Family | 0 | - | 3.85 | 13,258 |
| U.S. Presidential Quotes | 0 | - | 4.35 | 42,696 |
| The John F. Kennedy Presidency | 0 | - | 4.45 | 40,947 |
| Deadliest U.S. Wars | 0 | - | 4.82 | 157,967 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 122,468 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.84 | 50,964 |
| Win the U.S. Presidential Election | 0 | - | 4.79 | 507,732 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.75 | 19,254 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.46 | 20,849 |
| The American Revolution | 0 | - | 4.55 | 51,666 |
| Six Flags Over Texas | 0 | - | 4.84 | 58,708 |
| United States Map Quiz | 0 | - | 4.98 | 3,900,022 |
| The George W. Bush Presidency | 0 | - | 4.06 | 30,897 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 37,495 |
| The Barack Obama Presidency | 0 | - | 4.17 | 23,572 |
| Harvard University | 0 | - | 4.15 | 7,725 |
| The Iraq War | 0 | - | 4.43 | 14,354 |
| Third Most Common Language by U.S. State | 0 | - | 4.91 | 106,908 |
| Rust Belt Cities Map Quiz | 0 | - | 4.55 | 32,148 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.43 | 69,056 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.70 | 73,706 |
| Presidential Actors | 0 | - | 4.33 | 17,790 |
| Random U.S. Presidents by Picture | 0 | - | 4.37 | 59,910 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.92 | 49,311 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 76,664 |
| Countries of the Soviet Union | 0 | - | 4.98 | 184,694 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 99,918 |
| U.S. State Border Crossings | 0 | - | 4.96 | 82,047 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 222,004 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.83 | 33,155 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.87 | 65,200 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.52 | 69,985 |
| The Bill Clinton Presidency | 0 | - | 4.18 | 30,163 |
| The George H. W. Bush Presidency | 0 | - | 4.35 | 20,534 |
| The Ronald Reagan Presidency | 0 | - | 4.25 | 23,601 |
| The Richard Nixon Presidency | 0 | - | 4.10 | 20,812 |
| The Jimmy Carter Presidency | 0 | - | 4.39 | 18,030 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.20 | 30,078 |
| Cities and Towns of Massachusetts | 0 | - | 4.89 | 60,253 |
| US States Quiz | 0 | - | 5.00 | 14,720,580 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 339,901 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 133,551 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 62,677 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.93 | 49,150 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 58,619 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 46,351 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 74,439 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.96 | 126,392 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.88 | 50,971 |
| Biggest Spanish Empire Countries | 0 | - | 4.90 | 93,369 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 75,544 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 99,899 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.84 | 54,626 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 67,052 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 93,447 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 67,290 |
| Total United States Immigration by Country | 0 | - | 4.89 | 96,578 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 146,718 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.95 | 184,486 |
| Pixelated United States Map | 0 | - | 4.90 | 82,102 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 93,119 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 78,496 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,310 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 67,553 |
| George Bush... or George Bush | 0 | - | 3.89 | 7,704 |
| Las Vegas Casinos Quiz | 0 | - | 4.07 | 34,742 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.83 | 21,549 |
| U.S. History for Dummies | 0 | - | 4.49 | 65,308 |
| U.S. Civil War Decoder | 0 | - | 4.16 | 24,055 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 100,453 |
| U.S. States with the Letter Y | 0 | - | 4.87 | 96,038 |
| 10 Southernmost U.S. States | 0 | - | 4.84 | 99,100 |
| U.S. States with Short Names | 0 | - | 4.87 | 129,526 |
| U.S. States that Start with M | 0 | - | 4.91 | 150,310 |
| U.S. States By Population | 0 | - | 4.90 | 129,903 |
| U.S. States that Start with N | 0 | - | 4.95 | 155,375 |
| U.S. States with Longest Names | 0 | - | 4.84 | 35,987 |
| 10 Northernmost U.S. States | 0 | - | 4.89 | 73,576 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 77,722 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 58,283 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 55,992 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 145,262 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 167,806 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 98,996 |
| Top 10 Newest U.S. States | 0 | - | 4.81 | 68,042 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 90,167 |
| Ultimate Harry Potter Name Game | 0 | - | 4.95 | 463,457 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 221,950 |
| Vatican City Country Quiz | 0 | - | 4.49 | 39,078 |
| Most-Visited Countries by Popes | 0 | - | 4.63 | 63,396 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 60,543 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 71,536 |
| Countries Bordering China Since 1914 | 0 | - | 4.91 | 87,649 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 77,823 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 34,991 |
| Rivers of the United States | 0 | - | 4.91 | 56,870 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.95 | 273,515 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 124,319 |
| Countries that Beat the United States | 0 | - | 4.92 | 145,507 |
| American Revolution Decoder | 0 | - | 4.12 | 19,979 |
| Countries Closest to Alaska | 0 | - | 4.93 | 98,920 |
| California A-Z | 0 | - | 4.48 | 27,806 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.33 | 41,738 |
| Countries Closest to Maine | 0 | - | 4.85 | 58,880 |
| The American Civil War | 0 | - | 4.71 | 48,995 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 458,718 |
| Louisiana Purchase with a Map | 0 | - | 4.95 | 36,064 |
| US States with an Empty Map | 0 | - | 5.00 | 553,408 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 184,479 |
| Great Plains States and Provinces on a Map | 0 | - | 4.94 | 37,933 |
| Draw All US State Borders | 0 | - | 4.99 | 92,884 |
| U.S. States with the Longest International Borders | 0 | - | 4.81 | 40,612 |
| Top 10 Coldest U.S. States | 0 | - | 4.91 | 99,823 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 100,579 |
| Top 10 Most Native American U.S. States | 0 | - | 4.84 | 71,190 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.89 | 89,361 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 73,121 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 57,074 |
| Merged U.S. States | 0 | - | 4.38 | 40,301 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 71,102 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 115,972 |
| Countries that Bordered the USSR | 0 | - | 4.94 | 149,195 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 88,606 |
| Biggest Roman Empire Countries | 0 | - | 4.88 | 81,966 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 399,202 |
| Countries of Asia in 1900 | 0 | - | 4.49 | 53,340 |
| The Persian Gulf War | 0 | - | 3.98 | 7,692 |
| The Vietnam War | 0 | - | 4.41 | 32,802 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 48,299 |
| Random American Countries on a Map | 0 | - | 4.95 | 86,044 |
| South America Flags Map Quiz | 0 | - | 4.95 | 70,687 |
| Most-Spoken Languages of the United States | 0 | - | 4.45 | 163,582 |
| Countries Closest to United States A-Z | 0 | - | 4.86 | 107,283 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.33 | 10,350 |
| History of Florida | 0 | - | 4.44 | 8,712 |
| The Life of Martin Luther King Jr. | 0 | - | 4.79 | 10,354 |
| Hawaiian Islands | 0 | - | 4.85 | 38,477 |
| Hawaiian Islands Map Quiz | 0 | - | 4.88 | 20,985 |
| Boston Red Sox Trivia | 0 | - | 4.12 | 6,753 |
| New York Yankees Trivia | 0 | - | 4.36 | 5,990 |
| History of Texas | 0 | - | 4.41 | 13,481 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 57,809 |
| American History Quotes #1 | 0 | - | 4.40 | 91,355 |
| People on Money - United States | 0 | - | 4.31 | 61,758 |
| American History Quotes #2 | 0 | - | 4.34 | 39,214 |
| Old West History | 0 | - | 4.28 | 14,784 |
| U.S. History Groups of Two | 0 | - | 4.27 | 35,300 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 41,247 |
| Life of Benjamin Franklin | 0 | - | 4.18 | 6,220 |
| American Revolution - Multiple Choice | 0 | - | 4.32 | 18,794 |
| Last Names in U.S. History #1 | 0 | - | 4.24 | 34,234 |
| Last Names in U.S. History #2 | 0 | - | 4.41 | 15,965 |
| Fifty US States in One Minute | 0 | - | 4.55 | 3,241,319 |
| U.S. State Flags | 0 | - | 4.88 | 136,206 |
| U.S. States that Border Canada | 0 | - | 4.90 | 165,765 |
| Category Elimination - U.S. States #1 | 0 | - | 4.90 | 194,697 |
| Cartoon Versions of U.S. States | 0 | - | 4.84 | 51,897 |
| U.S. State Birds Quiz | 0 | - | 4.35 | 20,544 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.82 | 90,924 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 51,910 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 147,777 |
| Countries of the German Empire | 0 | - | 4.50 | 33,641 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.96 | 56,575 |
