| U.S. Presidents Quiz | 0 | - | 5.00 | 3,489,218 |
| Name a Valid U.S. President #1 | 0 | - | 4.90 | 182,404 |
| U.S. Presidential Trivia #1 | 0 | - | 4.47 | 104,638 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.57 | 89,742 |
| U.S. Presidential Trivia #2 | 0 | - | 4.48 | 50,058 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 89,022 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 36,386 |
| U.S. Presidents Who Died in Office | 0 | - | 4.78 | 33,573 |
| Name a Valid U.S. President #2 | 0 | - | 4.53 | 66,903 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 371,634 |
| U.S. Vice Presidents | 0 | - | 4.39 | 130,011 |
| Governors Who Ran For President | 0 | - | 4.47 | 19,707 |
| U.S. Presidents by Event | 0 | - | 4.57 | 31,059 |
| First Ladies of the United States | 0 | - | 4.27 | 83,190 |
| Presidential Middle Names | 0 | - | 4.40 | 58,341 |
| The Abraham Lincoln Presidency | 0 | - | 4.51 | 25,709 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 73,461 |
| Random U.S. Vice President to President | 0 | - | 4.43 | 29,805 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.63 | 15,315 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,284 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.53 | 27,578 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,403 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 413,449 |
| People in Pictures with Barack Obama | 0 | - | 4.09 | 46,886 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,609 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,275 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 11,952 |
| U.S. Presidential Running Mates | 0 | - | 4.39 | 27,711 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,395 |
| The John Adams Presidency | 0 | - | 4.12 | 8,457 |
| The Theodore Roosevelt Presidency | 0 | - | 4.33 | 7,507 |
| U.S. Vice Presidential Trivia | 0 | - | 4.27 | 12,408 |
| Play-Doh Presidents | 0 | - | 5.00 | 79,540 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.41 | 296,258 |
| The George Washington Presidency | 0 | - | 4.03 | 14,206 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 17,736 |
| Vietnam War Countries | 0 | - | 4.81 | 90,841 |
| U.S. Presidents True or False | 0 | - | 3.94 | 15,235 |
| U.S. President Scramble | 0 | - | 4.39 | 113,012 |
| U.S. Senators by State | 0 | - | 4.45 | 38,680 |
| The Kennedy Family | 0 | - | 3.90 | 13,782 |
| U.S. Presidential Quotes | 0 | - | 4.36 | 43,846 |
| The George W. Bush Presidency | 0 | - | 4.06 | 31,701 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 42,671 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 184,524 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 126,505 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.85 | 54,043 |
| Win the U.S. Presidential Election | 0 | - | 4.74 | 582,579 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.71 | 19,746 |
| People in Pictures with Ronald Reagan | 0 | - | 4.33 | 39,621 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.47 | 22,353 |
| The Barack Obama Presidency | 0 | - | 4.16 | 24,737 |
| The American Revolution | 0 | - | 4.52 | 53,337 |
| United States Map Quiz | 0 | - | 4.98 | 4,071,781 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.18 | 32,396 |
| Random U.S. Presidents by Picture | 0 | - | 4.37 | 64,114 |
| Harvard University | 0 | - | 4.15 | 8,109 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 84,001 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 103,828 |
| The Iraq War | 0 | - | 4.46 | 15,163 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 111,886 |
| Rust Belt Cities Map Quiz | 0 | - | 4.56 | 34,015 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 73,314 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 78,690 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.52 | 73,448 |
| Presidential Actors | 0 | - | 4.34 | 18,682 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 30,983 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,150 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,368 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,575 |
| The Jimmy Carter Presidency | 0 | - | 4.40 | 18,689 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.94 | 61,476 |
| U.S. States Closest to Moscow | 0 | - | 4.49 | 46,643 |
| Countries of the Soviet Union | 0 | - | 4.98 | 190,670 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 78,232 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 101,591 |
| U.S. State Border Crossings | 0 | - | 4.96 | 87,276 |
| U.S. National Parks Quiz | 0 | - | 4.82 | 51,685 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 232,925 |
| Total United States Immigration by Country | 0 | - | 4.90 | 105,711 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 71,645 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.95 | 167,815 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.96 | 211,830 |
| All U.S. Supreme Court Justices | 0 | - | 4.51 | 28,325 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 70,975 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.44 | 11,246 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,021 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 69,620 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 62,539 |
| Las Vegas Casinos Quiz | 0 | - | 4.09 | 37,579 |
| U.S. Civil War Decoder | 0 | - | 4.18 | 24,834 |
| US States Quiz | 0 | - | 5.00 | 16,030,244 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 357,588 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 144,015 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 71,191 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.94 | 58,599 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 66,381 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 52,834 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 137,650 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 102,880 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 110,953 |
| The Persian Gulf War | 0 | - | 4.02 | 8,152 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 84,860 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 78,698 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 37,482 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.96 | 311,811 |
| Pixelated United States Map | 0 | - | 4.89 | 89,552 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 103,034 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 86,642 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 141,188 |
| Countries that Beat the United States | 0 | - | 4.93 | 159,349 |
| American Revolution Decoder | 0 | - | 4.10 | 20,574 |
| California A-Z | 0 | - | 4.48 | 28,435 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.23 | 44,793 |
| Six Flags Over Texas | 0 | - | 4.79 | 61,554 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.89 | 25,727 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,537 |
| U.S. History for Dummies | 0 | - | 4.49 | 80,193 |
| The Most Recent... United States | 0 | - | 4.44 | 17,480 |
| The American Civil War | 0 | - | 4.61 | 51,060 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 111,662 |
| Word Scramble - U.S. States | 0 | - | 4.96 | 484,625 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 105,888 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 108,064 |
| U.S. States with Short Names | 0 | - | 4.90 | 141,936 |
| U.S. States that Start with M | 0 | - | 4.93 | 179,657 |
| U.S. States By Population | 0 | - | 4.90 | 137,949 |
| U.S. States that Start with N | 0 | - | 4.95 | 165,519 |
| U.S. States with Longest Names | 0 | - | 4.87 | 41,228 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 43,081 |
| US States with an Empty Map | 0 | - | 5.00 | 598,130 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 79,536 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 84,308 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 61,843 |
| Draw All US State Borders | 0 | - | 4.99 | 119,441 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 62,109 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.94 | 154,476 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 174,046 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 120,953 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.83 | 67,282 |
| Top 10 Newest U.S. States | 0 | - | 4.84 | 83,484 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 97,118 |
| U.S. States with the Most Immigrants | 0 | - | 4.84 | 79,006 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 63,954 |
| Merged U.S. States | 0 | - | 4.37 | 42,736 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 89,007 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 126,103 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 160,660 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 97,957 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.97 | 50,748 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 57,150 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 38,782 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 82,255 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 95,307 |
| Commonwealth of Nations Countries | 0 | - | 4.93 | 231,640 |
| Vatican City Country Quiz | 0 | - | 4.52 | 42,489 |
| Most-Visited Countries by Popes | 0 | - | 4.55 | 81,059 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 66,466 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 70,647 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 92,308 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.85 | 52,153 |
| Random American Countries on a Map | 0 | - | 4.96 | 94,072 |
| South America Flags Map Quiz | 0 | - | 4.95 | 81,214 |
| Rivers of the United States | 0 | - | 4.92 | 62,425 |
| Countries Closest to United States A-Z | 0 | - | 4.83 | 113,721 |
| Countries Closest to Alaska | 0 | - | 4.91 | 105,919 |
| History of Florida | 0 | - | 4.45 | 9,450 |
| The Life of Martin Luther King Jr. | 0 | - | 4.79 | 10,812 |
| Hawaiian Islands | 0 | - | 4.83 | 41,018 |
| Countries Closest to Maine | 0 | - | 4.83 | 63,588 |
| Boston Red Sox Trivia | 0 | - | 4.09 | 7,293 |
| New York Yankees Trivia | 0 | - | 4.29 | 6,852 |
| History of Texas | 0 | - | 4.43 | 14,227 |
| U.S. States that Border Tennessee | 0 | - | 4.82 | 63,709 |
| American History Quotes #1 | 0 | - | 4.38 | 94,257 |
| People on Money - United States | 0 | - | 4.32 | 62,755 |
| American History Quotes #2 | 0 | - | 4.38 | 40,549 |
| Old West History | 0 | - | 4.30 | 15,080 |
| U.S. History Groups of Two | 0 | - | 4.23 | 43,488 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.19 | 43,736 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,412 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,550 |
| U.S. History Multiple Choice #3 | 0 | - | 4.42 | 24,239 |
| Last Names in U.S. History #1 | 0 | - | 4.24 | 35,505 |
| Fifty US States in One Minute | 0 | - | 4.55 | 3,444,754 |
| U.S. State Flags | 0 | - | 4.89 | 155,899 |
| U.S. States that Border Canada | 0 | - | 4.91 | 174,003 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 199,587 |
| Category Elimination - U.S. States #1 | 0 | - | 4.91 | 210,337 |
| Category Elimination - U.S. States #2 | 0 | - | 4.81 | 125,983 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 44,996 |
| Random U.S. States on a Map | 0 | - | 4.96 | 594,538 |
| U.S. State Birds Quiz | 0 | - | 4.31 | 21,049 |
| Top 10 Coldest U.S. States | 0 | - | 4.93 | 119,267 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 120,061 |
| Top 10 Most Native American U.S. States | 0 | - | 4.85 | 87,109 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.81 | 60,036 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.93 | 55,728 |
| Neutral European Countries of WWII | 0 | - | 4.93 | 156,488 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 55,498 |
