| U.S. Presidents Quiz | 0 | - | 5.00 | 3,675,712 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,763 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,288 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,966 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,351 |
| Presidential Middle Names | 0 | - | 4.41 | 59,953 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,001 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,233 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,287 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,867 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,695 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,448 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,687 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,203 |
| First Ladies of the United States | 0 | - | 4.28 | 85,388 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,164 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,697 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,091 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,890 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,740 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,880 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,076 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,784 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,704 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,554 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,692 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,570 |
| The John Adams Presidency | 0 | - | 4.12 | 8,707 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,715 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,811 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,959 |
| The George Washington Presidency | 0 | - | 4.03 | 14,509 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,906 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,268 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,638 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,211 |
| Vietnam War Countries | 0 | - | 4.83 | 93,915 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,238 |
| U.S. President Scramble | 0 | - | 4.40 | 116,487 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,558 |
| The Kennedy Family | 0 | - | 3.90 | 14,048 |
| U.S. Senators by State | 0 | - | 4.45 | 39,852 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,413 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,133 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,587 |
| The American Revolution | 0 | - | 4.52 | 54,157 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,827 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,942 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,776 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 622,684 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,084 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,982 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,549 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,090 |
| United States Map Quiz | 0 | - | 4.98 | 4,148,937 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,453 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 66,003 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,323 |
| Harvard University | 0 | - | 4.15 | 8,280 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,520 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,455 |
| The Iraq War | 0 | - | 4.47 | 15,602 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,555 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 34,973 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,332 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,108 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,059 |
| Presidential Actors | 0 | - | 4.36 | 19,119 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,401 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,453 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,768 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,968 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,384 |
| U.S. States Closest to Moscow | 0 | - | 4.50 | 47,924 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,224 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,470 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,352 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,220 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,595 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,874 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,078 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,183 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,788 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 242,392 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,694 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,490 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 65,923 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,702 |
| US States Quiz | 0 | - | 5.00 | 16,784,807 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,171 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,574 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 75,887 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,995 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,512 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,398 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,890 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,459 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,908 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,993 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,956 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 329,912 |
| Pixelated United States Map | 0 | - | 4.89 | 93,844 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,038 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,281 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,853 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,178 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,987 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,716 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,191 |
| American Revolution Decoder | 0 | - | 4.10 | 20,908 |
| California A-Z | 0 | - | 4.49 | 28,746 |
| Las Vegas Casinos | 0 | - | 4.12 | 38,018 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,166 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,753 |
| The Most Recent... United States | 0 | - | 4.45 | 18,375 |
| The American Civil War | 0 | - | 4.62 | 52,293 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,228 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,394 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 504,203 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,949 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,952 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,401 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,631 |
| U.S. States By Population | 0 | - | 4.92 | 152,804 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,926 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,188 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,116 |
| US States with an Empty Map | 0 | - | 5.00 | 621,528 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,225 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,977 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,997 |
| Draw All US State Borders | 0 | - | 4.99 | 135,457 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,288 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,560 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,387 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,886 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,340 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,997 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,432 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,213 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,218 |
| Merged U.S. States | 0 | - | 4.37 | 43,997 |
| Draw All US State Borders - Extreme | 0 | - | 4.99 | 77,991 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,381 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,547 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,893 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,221 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 53,770 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,263 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,720 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,365 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,872 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,157 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,905 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,182 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,421 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,525 |
| The Persian Gulf War | 0 | - | 4.02 | 8,428 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,450 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,958 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,549 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,862 |
| South America Flags Map Quiz | 0 | - | 4.95 | 87,224 |
| Rivers of the United States | 0 | - | 4.93 | 65,852 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,811 |
| American Founding Fathers | 0 | - | 4.42 | 23,116 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,826 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,700 |
| History of Florida | 0 | - | 4.45 | 9,793 |
| Hawaiian Islands | 0 | - | 4.83 | 42,568 |
| Countries Closest to Maine | 0 | - | 4.85 | 66,765 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,161 |
| History of Texas | 0 | - | 4.43 | 14,584 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,216 |
| American History Quotes #1 | 0 | - | 4.37 | 95,851 |
| People on Money - United States | 0 | - | 4.31 | 63,270 |
| American History Quotes #2 | 0 | - | 4.38 | 41,313 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,342 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,839 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,051 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,690 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,155 |
| U.S. State Flags | 0 | - | 4.89 | 168,946 |
| U.S. States that Border Canada | 0 | - | 4.91 | 183,735 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,349 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,837 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,011 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,238 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,101 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,549 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,701 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,883 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,962 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,789 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,615 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 492,268 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,257 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,212 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,050 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 218,274 |
