| U.S. Presidents Quiz | 0 | - | 5.00 | 3,648,075 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,573 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,707 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,830 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,336 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,901 |
| Presidential Middle Names | 0 | - | 4.41 | 59,626 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,655 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,731 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,143 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,702 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,306 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,309 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,155 |
| First Ladies of the United States | 0 | - | 4.28 | 85,189 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,098 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,176 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,977 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,814 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,668 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,807 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,218 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,667 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,552 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,442 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,653 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,428 |
| The John Adams Presidency | 0 | - | 4.12 | 8,673 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,678 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,761 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,588 |
| The George Washington Presidency | 0 | - | 4.03 | 14,469 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,861 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,195 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,600 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,147 |
| Vietnam War Countries | 0 | - | 4.83 | 93,526 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,201 |
| U.S. President Scramble | 0 | - | 4.40 | 116,133 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,522 |
| The Kennedy Family | 0 | - | 3.90 | 14,019 |
| U.S. Senators by State | 0 | - | 4.44 | 39,717 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,344 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,078 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,443 |
| The American Revolution | 0 | - | 4.52 | 54,028 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,106 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,608 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,561 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 617,251 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,020 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,955 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,417 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 22,991 |
| United States Map Quiz | 0 | - | 4.98 | 4,139,423 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,326 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 65,756 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,239 |
| Harvard University | 0 | - | 4.15 | 8,257 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 87,907 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,257 |
| The Iraq War | 0 | - | 4.47 | 15,538 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,331 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 34,864 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,042 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 80,797 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 74,858 |
| Presidential Actors | 0 | - | 4.36 | 19,046 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,340 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,407 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,710 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,915 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,151 |
| U.S. States Closest to Moscow | 0 | - | 4.50 | 47,744 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,681 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,172 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,692 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,824 |
| Name the U.S. National Parks | 0 | - | 4.85 | 57,295 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,132 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,497 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,731 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,015 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 239,905 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,474 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 72,962 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,514 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,420 |
| US States Quiz | 0 | - | 5.00 | 16,676,410 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,031 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,746 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,280 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,222 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 69,973 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,892 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 142,980 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,653 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,087 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,601 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,753 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,485 |
| Pixelated United States Map | 0 | - | 4.89 | 93,271 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,260 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,699 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,254 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,364 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,868 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,660 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,176 |
| American Revolution Decoder | 0 | - | 4.10 | 20,872 |
| California A-Z | 0 | - | 4.49 | 28,696 |
| Las Vegas Casinos | 0 | - | 4.12 | 37,953 |
| Six Flags Over Texas | 0 | - | 4.79 | 62,963 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,402 |
| The Most Recent... United States | 0 | - | 4.45 | 18,259 |
| The American Civil War | 0 | - | 4.62 | 52,098 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,170 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,562 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,117 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,189 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,250 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,467 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,728 |
| U.S. States By Population | 0 | - | 4.92 | 152,240 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,230 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,763 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,439 |
| US States with an Empty Map | 0 | - | 5.00 | 618,035 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,827 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,433 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,697 |
| Draw All US State Borders | 0 | - | 4.99 | 133,112 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,777 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,758 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,021 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,385 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,013 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,601 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 100,950 |
| U.S. States with the Most Immigrants | 0 | - | 4.84 | 81,853 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,722 |
| Merged U.S. States | 0 | - | 4.36 | 43,821 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,520 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,767 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,347 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,390 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 53,366 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,206 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,269 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,058 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,378 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,738 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,053 |
| Vatican City Country Quiz | 0 | - | 4.53 | 43,951 |
| Most-Visited Countries by Popes | 0 | - | 4.55 | 83,076 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,117 |
| The Persian Gulf War | 0 | - | 4.02 | 8,395 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,195 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,593 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,178 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,311 |
| South America Flags Map Quiz | 0 | - | 4.95 | 86,334 |
| Rivers of the United States | 0 | - | 4.93 | 65,423 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,300 |
| American Founding Fathers | 0 | - | 4.41 | 23,061 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,176 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,428 |
| History of Florida | 0 | - | 4.45 | 9,756 |
| Hawaiian Islands | 0 | - | 4.83 | 42,393 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,357 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,101 |
| History of Texas | 0 | - | 4.43 | 14,544 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,061 |
| American History Quotes #1 | 0 | - | 4.37 | 95,649 |
| People on Money - United States | 0 | - | 4.31 | 63,195 |
| American History Quotes #2 | 0 | - | 4.38 | 41,212 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,214 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,694 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,974 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,633 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,060 |
| U.S. State Flags | 0 | - | 4.89 | 166,648 |
| U.S. States that Border Canada | 0 | - | 4.91 | 181,799 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,201 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,415 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,454 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,771 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,541 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 90,923 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,503 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,587 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,347 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,450 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,291 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 491,151 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 81,666 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,886 |
| Random American Countries on a Map | 0 | - | 4.96 | 98,511 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,239 |
| Territories of the United States | 0 | - | 4.79 | 52,096 |
