| U.S. Presidents Quiz | 0 | - | 5.00 | 3,177,712 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 167,463 |
| U.S. Vice Presidents | 0 | - | 4.42 | 119,813 |
| U.S. Presidential Trivia #1 | 0 | - | 4.51 | 97,114 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.56 | 81,750 |
| U.S. Presidential Trivia #2 | 0 | - | 4.51 | 39,821 |
| Assassinated U.S. Presidents | 0 | - | 4.54 | 80,139 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 33,576 |
| Name a Valid U.S. President #2 | 0 | - | 4.52 | 61,338 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 353,489 |
| Governors Who Ran For President | 0 | - | 4.47 | 18,901 |
| U.S. Presidents by Event | 0 | - | 4.58 | 29,121 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 25,758 |
| First Ladies of the United States | 0 | - | 4.27 | 79,951 |
| Presidential Middle Names | 0 | - | 4.37 | 56,161 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 24,854 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.31 | 64,648 |
| Random U.S. Vice President to President | 0 | - | 4.57 | 23,250 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.63 | 13,921 |
| Add a Letter - Make a U.S. President | 0 | - | 4.66 | 21,948 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.41 | 22,529 |
| U.S. Presidents Who Died in Office | 0 | - | 4.75 | 31,236 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 394,995 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 45,134 |
| The George Washington Presidency | 0 | - | 4.02 | 13,637 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 12,879 |
| The John Adams Presidency | 0 | - | 4.10 | 7,980 |
| The Theodore Roosevelt Presidency | 0 | - | 4.31 | 7,143 |
| U.S. Vice Presidential Trivia | 0 | - | 4.29 | 11,434 |
| Play-Doh Presidents | 0 | - | 5.00 | 74,664 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.33 | 10,695 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.32 | 16,819 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.32 | 20,519 |
| Vietnam War Countries | 0 | - | 4.81 | 86,502 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.44 | 279,360 |
| George Washington... or George W. Bush? | 0 | - | 4.14 | 11,392 |
| U.S. President Scramble | 0 | - | 4.37 | 90,971 |
| U.S. Presidents True or False | 0 | - | 3.94 | 14,602 |
| The Kennedy Family | 0 | - | 3.85 | 13,285 |
| U.S. Senators by State | 0 | - | 4.49 | 36,188 |
| U.S. Presidential Quotes | 0 | - | 4.36 | 42,736 |
| The John F. Kennedy Presidency | 0 | - | 4.45 | 40,991 |
| The American Revolution | 0 | - | 4.51 | 51,727 |
| Deadliest U.S. Wars | 0 | - | 4.83 | 158,347 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 122,601 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.84 | 51,073 |
| Win the U.S. Presidential Election | 0 | - | 4.79 | 510,488 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.75 | 19,261 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 37,553 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.46 | 20,904 |
| Six Flags Over Texas | 0 | - | 4.84 | 58,832 |
| The Iraq War | 0 | - | 4.43 | 14,383 |
| United States Map Quiz | 0 | - | 4.98 | 3,907,054 |
| The George W. Bush Presidency | 0 | - | 4.06 | 30,918 |
| Random U.S. Presidents by Picture | 0 | - | 4.37 | 60,155 |
| The Barack Obama Presidency | 0 | - | 4.17 | 23,611 |
| Harvard University | 0 | - | 4.15 | 7,741 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 77,009 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 100,083 |
| Third Most Common Language by U.S. State | 0 | - | 4.91 | 107,149 |
| Rust Belt Cities Map Quiz | 0 | - | 4.56 | 32,221 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.43 | 69,201 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.70 | 73,892 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.52 | 70,127 |
| Presidential Actors | 0 | - | 4.33 | 17,822 |
| The Bill Clinton Presidency | 0 | - | 4.18 | 30,187 |
| The George H. W. Bush Presidency | 0 | - | 4.35 | 20,550 |
| The Ronald Reagan Presidency | 0 | - | 4.25 | 23,626 |
| The Richard Nixon Presidency | 0 | - | 4.10 | 20,840 |
| The Jimmy Carter Presidency | 0 | - | 4.39 | 18,057 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.92 | 49,834 |
| Countries of the Soviet Union | 0 | - | 4.98 | 185,017 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 74,623 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 93,779 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 100,297 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.84 | 54,895 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 93,780 |
| U.S. State Border Crossings | 0 | - | 4.96 | 82,210 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 222,322 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.83 | 33,416 |
| Total United States Immigration by Country | 0 | - | 4.89 | 96,897 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 65,427 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 147,234 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.94 | 185,431 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 67,687 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.20 | 30,190 |
| Cities and Towns of Massachusetts | 0 | - | 4.89 | 60,574 |
| US States Quiz | 0 | - | 5.00 | 14,773,048 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 340,483 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 133,959 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 63,056 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.93 | 49,495 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 58,927 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 46,580 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.96 | 126,886 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.89 | 51,195 |
| Countries of Iberia in History with a Map | 0 | - | 4.81 | 34,144 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 75,903 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 90,387 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 222,324 |
| Vatican City Country Quiz | 0 | - | 4.49 | 39,328 |
| Most-Visited Countries by Popes | 0 | - | 4.63 | 76,152 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 60,795 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 67,249 |
| Countries Bordering China Since 1914 | 0 | - | 4.91 | 87,862 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 78,111 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 67,509 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 35,062 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.96 | 274,779 |
| Pixelated United States Map | 0 | - | 4.90 | 82,360 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 93,554 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 78,860 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 124,632 |
| Countries that Beat the United States | 0 | - | 4.92 | 145,985 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,335 |
| George Bush... or George Bush | 0 | - | 3.89 | 7,716 |
| American Revolution Decoder | 0 | - | 4.12 | 20,005 |
| California A-Z | 0 | - | 4.48 | 27,830 |
| Las Vegas Casinos Quiz | 0 | - | 4.10 | 36,205 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.84 | 21,720 |
| U.S. History for Dummies | 0 | - | 4.49 | 65,498 |
| The American Civil War | 0 | - | 4.72 | 49,088 |
| U.S. Civil War Decoder | 0 | - | 4.16 | 24,092 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 100,701 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 459,624 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 96,332 |
| 10 Southernmost U.S. States | 0 | - | 4.84 | 99,367 |
| U.S. States with Short Names | 0 | - | 4.87 | 129,922 |
| U.S. States that Start with M | 0 | - | 4.91 | 150,642 |
| U.S. States By Population | 0 | - | 4.90 | 130,093 |
| U.S. States that Start with N | 0 | - | 4.95 | 155,697 |
| U.S. States with Longest Names | 0 | - | 4.84 | 36,112 |
| Louisiana Purchase with a Map | 0 | - | 4.95 | 36,319 |
| US States with an Empty Map | 0 | - | 5.00 | 555,120 |
| 10 Northernmost U.S. States | 0 | - | 4.89 | 73,756 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 77,963 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 58,431 |
| Draw All US State Borders | 0 | - | 4.99 | 93,710 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 56,200 |
| U.S. States with the Longest International Borders | 0 | - | 4.81 | 40,957 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 145,517 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 167,969 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 99,113 |
| Top 10 Newest U.S. States | 0 | - | 4.81 | 68,162 |
| Top 10 Least Obese U.S. States | 0 | - | 4.81 | 68,235 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.89 | 89,633 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 73,303 |
| Merged U.S. States | 0 | - | 4.39 | 40,396 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 71,426 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 116,255 |
| Countries that Bordered the USSR | 0 | - | 4.95 | 153,144 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 89,051 |
| Biggest Roman Empire Countries | 0 | - | 4.88 | 82,139 |
| Ultimate Harry Potter Name Game | 0 | - | 4.95 | 464,102 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 71,829 |
| South America Flags Map Quiz | 0 | - | 4.95 | 71,094 |
| Rivers of the United States | 0 | - | 4.91 | 57,105 |
| Countries Closest to United States A-Z | 0 | - | 4.84 | 107,545 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.33 | 10,371 |
| Countries Closest to Alaska | 0 | - | 4.93 | 99,151 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.32 | 41,914 |
| History of Florida | 0 | - | 4.44 | 8,733 |
| Hawaiian Islands | 0 | - | 4.85 | 38,518 |
| Hawaiian Islands Map Quiz | 0 | - | 4.88 | 21,043 |
| Countries Closest to Maine | 0 | - | 4.85 | 59,048 |
| New York Yankees Trivia | 0 | - | 4.36 | 6,044 |
| History of Texas | 0 | - | 4.41 | 13,498 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 57,856 |
| American History Quotes #1 | 0 | - | 4.40 | 91,450 |
| People on Money - United States | 0 | - | 4.31 | 61,807 |
| American History Quotes #2 | 0 | - | 4.34 | 39,248 |
| U.S. History Groups of Two | 0 | - | 4.28 | 35,376 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 41,319 |
| Last Names in U.S. History #1 | 0 | - | 4.24 | 34,276 |
| Last Names in U.S. History #2 | 0 | - | 4.41 | 16,003 |
| U.S. State Flags | 0 | - | 4.87 | 136,822 |
| U.S. States that Border Canada | 0 | - | 4.90 | 165,968 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 185,043 |
| Great Plains States and Provinces on a Map | 0 | - | 4.94 | 38,146 |
| Cartoon Versions of U.S. States | 0 | - | 4.84 | 52,147 |
| Top 10 Coldest U.S. States | 0 | - | 4.91 | 100,363 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 100,871 |
| Top 10 Most Native American U.S. States | 0 | - | 4.84 | 71,413 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 57,153 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.82 | 91,061 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 52,036 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 148,203 |
| U.S. History Multiple Choice #5 | 0 | - | 4.34 | 10,414 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 111,830 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 400,245 |
| Groups of Things - Harry Potter | 0 | - | 4.86 | 261,096 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.90 | 30,979 |
| Countries of the Popes | 0 | - | 4.85 | 109,757 |
| Countries of Asia in 1900 | 0 | - | 4.49 | 53,474 |
| The Persian Gulf War | 0 | - | 3.98 | 7,708 |
| The Vietnam War | 0 | - | 4.41 | 32,854 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 98,581 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 48,430 |
| Random American Countries on a Map | 0 | - | 4.95 | 86,318 |
| Most-Spoken Languages of the United States | 0 | - | 4.45 | 163,855 |
