| U.S. Presidents Quiz | 0 | - | 5.00 | 3,655,347 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,887 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,953 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,961 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,517 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,010 |
| Presidential Middle Names | 0 | - | 4.41 | 59,716 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,747 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,830 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,176 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,748 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,433 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,609 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,168 |
| First Ladies of the United States | 0 | - | 4.28 | 85,248 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,113 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,303 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,003 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,838 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,690 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,817 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,807 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,697 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,601 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,462 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,662 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,502 |
| The John Adams Presidency | 0 | - | 4.12 | 8,677 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,683 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,774 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,684 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,404 |
| The George Washington Presidency | 0 | - | 4.03 | 14,476 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,871 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,219 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,609 |
| Vietnam War Countries | 0 | - | 4.83 | 93,624 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,216 |
| U.S. President Scramble | 0 | - | 4.40 | 116,210 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,528 |
| The Kennedy Family | 0 | - | 3.90 | 14,026 |
| U.S. Senators by State | 0 | - | 4.45 | 39,760 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,365 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,089 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,485 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,695 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,612 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,960 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,027 |
| The American Revolution | 0 | - | 4.52 | 54,059 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,283 |
| United States Map Quiz | 0 | - | 4.98 | 4,142,114 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 618,655 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,035 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,456 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,364 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,258 |
| Harvard University | 0 | - | 4.15 | 8,265 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 34,889 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,124 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 80,880 |
| Presidential Actors | 0 | - | 4.36 | 19,067 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 65,830 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,054 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,858 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,311 |
| The Iraq War | 0 | - | 4.47 | 15,557 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,964 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,354 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,382 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,883 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 74,913 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,353 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,422 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,722 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,925 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,084 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,504 |
| US States Quiz | 0 | - | 5.00 | 16,704,302 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,490 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,977 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,447 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,438 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,136 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,033 |
| U.S. States Closest to Moscow | 0 | - | 4.50 | 47,785 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,249 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,212 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,917 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,697 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,017 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,671 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,193 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,984 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,074 |
| Pixelated United States Map | 0 | - | 4.89 | 93,503 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,497 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,877 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,883 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,533 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,670 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,180 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,638 |
| Las Vegas Casinos | 0 | - | 4.12 | 37,972 |
| Six Flags Over Texas | 0 | - | 4.79 | 63,017 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,489 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,187 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,750 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,380 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,427 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,686 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,931 |
| U.S. States By Population | 0 | - | 4.92 | 152,390 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,422 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,878 |
| US States with an Empty Map | 0 | - | 5.00 | 618,934 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,914 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,304 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,566 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,767 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,895 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,891 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,089 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,504 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,076 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,667 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,853 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 53,473 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,382 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,915 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,149 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,522 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,318 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,010 |
| The Persian Gulf War | 0 | - | 4.02 | 8,403 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,288 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,300 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,810 |
| Rivers of the United States | 0 | - | 4.93 | 65,525 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,436 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,595 |
| American Founding Fathers | 0 | - | 4.41 | 23,074 |
| American Revolution Decoder | 0 | - | 4.10 | 20,879 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,329 |
| California A-Z | 0 | - | 4.49 | 28,709 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,508 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,453 |
| People on Money - United States | 0 | - | 4.31 | 63,207 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,246 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,733 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,994 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,646 |
| The Most Recent... United States | 0 | - | 4.45 | 18,291 |
| The American Civil War | 0 | - | 4.62 | 52,166 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,963 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,257 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,599 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,744 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,595 |
| Draw All US State Borders | 0 | - | 4.99 | 133,672 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,880 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,671 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,082 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,113 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,949 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,556 |
| Merged U.S. States | 0 | - | 4.36 | 43,871 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,739 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,968 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,515 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,667 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,540 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,222 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,859 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 491,465 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,339 |
| Most-Visited Countries by Popes | 0 | - | 4.55 | 83,188 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,225 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 81,824 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,741 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,462 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,956 |
| Random American Countries on a Map | 0 | - | 4.96 | 98,656 |
| South America Flags Map Quiz | 0 | - | 4.95 | 86,647 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,772 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,434 |
| Most Common High School Mascots | 0 | - | 4.47 | 31,832 |
| History of Florida | 0 | - | 4.45 | 9,764 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,059 |
| Hawaiian Islands | 0 | - | 4.83 | 42,432 |
| Boston Red Sox Trivia | 0 | - | 4.09 | 7,499 |
| Top 10 Boston Celtics Players | 0 | - | 4.05 | 23,596 |
| Boston Celtics Trivia | 0 | - | 4.09 | 14,635 |
| Top 15 New York Yankees of All-Time | 0 | - | 4.02 | 25,659 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,121 |
| History of Texas | 0 | - | 4.43 | 14,554 |
| History of Pennsylvania | 0 | - | 4.16 | 7,087 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,090 |
| History of Virginia | 0 | - | 4.31 | 11,556 |
| American History Quotes #1 | 0 | - | 4.37 | 95,696 |
