| U.S. Presidents Quiz | 0 | - | 5.00 | 3,545,568 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 184,855 |
| U.S. Presidential Trivia #1 | 0 | - | 4.47 | 105,717 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.57 | 90,940 |
| U.S. Presidential Trivia #2 | 0 | - | 4.48 | 51,019 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 90,802 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 37,138 |
| U.S. Presidents Who Died in Office | 0 | - | 4.78 | 34,017 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 67,693 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 374,160 |
| U.S. Vice Presidents | 0 | - | 4.40 | 131,723 |
| Governors Who Ran For President | 0 | - | 4.47 | 19,902 |
| U.S. Presidents by Event | 0 | - | 4.58 | 31,417 |
| First Ladies of the United States | 0 | - | 4.28 | 83,741 |
| Presidential Middle Names | 0 | - | 4.40 | 58,737 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 25,848 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 74,447 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.63 | 15,550 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,489 |
| Shortest U.S. Presidential Terms | 0 | - | 4.80 | 11,544 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,517 |
| U.S. Presidents by Picture | 0 | - | 4.86 | 416,730 |
| People in Pictures with Barack Obama | 0 | - | 4.09 | 47,183 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.53 | 27,945 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 27,987 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,489 |
| Random U.S. Vice President to President | 0 | - | 4.38 | 30,040 |
| The John Adams Presidency | 0 | - | 4.12 | 8,532 |
| The Theodore Roosevelt Presidency | 0 | - | 4.38 | 7,577 |
| U.S. Vice Presidential Trivia | 0 | - | 4.25 | 12,551 |
| Play-Doh Presidents | 0 | - | 5.00 | 80,271 |
| The George Washington Presidency | 0 | - | 4.03 | 14,292 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,692 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 17,917 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,386 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.41 | 298,312 |
| Vietnam War Countries | 0 | - | 4.81 | 91,555 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,062 |
| U.S. President Scramble | 0 | - | 4.39 | 114,250 |
| U.S. Senators by State | 0 | - | 4.45 | 39,000 |
| U.S. Presidents True or False | 0 | - | 3.94 | 15,327 |
| The Kennedy Family | 0 | - | 3.90 | 13,868 |
| U.S. Presidential Quotes | 0 | - | 4.36 | 43,991 |
| The George W. Bush Presidency | 0 | - | 4.06 | 31,827 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 42,938 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 185,857 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 127,056 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.83 | 54,594 |
| Win the U.S. Presidential Election | 0 | - | 4.75 | 594,970 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.71 | 19,821 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.47 | 22,591 |
| The American Revolution | 0 | - | 4.52 | 53,568 |
| United States Map Quiz | 0 | - | 4.98 | 4,097,300 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 18,791 |
| People in Pictures with Ronald Reagan | 0 | - | 4.34 | 39,910 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.18 | 32,707 |
| The Barack Obama Presidency | 0 | - | 4.16 | 24,898 |
| Harvard University | 0 | - | 4.15 | 8,147 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 112,421 |
| Rust Belt Cities Map Quiz | 0 | - | 4.56 | 34,288 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 73,963 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 79,472 |
| Presidential Actors | 0 | - | 4.34 | 18,828 |
| Random U.S. Presidents by Picture | 0 | - | 4.38 | 64,716 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.94 | 63,428 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 85,414 |
| Countries of the Soviet Union | 0 | - | 4.98 | 191,600 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 104,241 |
| The Iraq War | 0 | - | 4.46 | 15,273 |
| U.S. State Border Crossings | 0 | - | 4.96 | 88,066 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 234,829 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 72,612 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 73,918 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,097 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,233 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,480 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,678 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 70,851 |
| US States Quiz | 0 | - | 5.00 | 16,253,266 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 360,210 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 145,568 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 72,628 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.94 | 60,174 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 67,603 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 53,969 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 78,841 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 139,523 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 103,049 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 79,369 |
| U.S. National Parks Quiz | 0 | - | 4.83 | 52,717 |
| Total United States Immigration by Country | 0 | - | 4.90 | 107,238 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 169,668 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 231,146 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.96 | 317,347 |
| Pixelated United States Map | 0 | - | 4.90 | 90,611 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 104,832 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 88,115 |
| All U.S. Supreme Court Justices | 0 | - | 4.52 | 28,493 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 71,463 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.45 | 11,355 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,079 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 63,418 |
| Las Vegas Casinos Quiz | 0 | - | 4.09 | 37,704 |
| Six Flags Over Texas | 0 | - | 4.79 | 62,040 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.89 | 26,305 |
| U.S. History for Dummies | 0 | - | 4.47 | 80,986 |
| The Most Recent... United States | 0 | - | 4.44 | 17,767 |
| U.S. Civil War Decoder | 0 | - | 4.18 | 24,933 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 113,544 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 107,387 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 109,528 |
| U.S. States with Short Names | 0 | - | 4.90 | 144,060 |
| U.S. States that Start with M | 0 | - | 4.93 | 181,849 |
| U.S. States By Population | 0 | - | 4.90 | 139,052 |
| U.S. States that Start with N | 0 | - | 4.95 | 166,995 |
| U.S. States with Longest Names | 0 | - | 4.87 | 42,143 |
| 10 Northernmost U.S. States | 0 | - | 4.89 | 80,381 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 85,361 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 62,406 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 63,045 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.94 | 156,334 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 175,230 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 122,052 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.84 | 67,937 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 84,285 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 64,989 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 58,294 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 111,996 |
| Countries of Iberia in History with a Map | 0 | - | 4.89 | 39,521 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 83,319 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 112,774 |
| The Persian Gulf War | 0 | - | 4.02 | 8,228 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 71,189 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.85 | 52,802 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 86,184 |
| 10 Longest Rivers in the United States | 0 | - | 4.84 | 37,972 |
| Rivers of the United States | 0 | - | 4.92 | 63,477 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 142,649 |
| Countries that Beat the United States | 0 | - | 4.93 | 161,190 |
| American Revolution Decoder | 0 | - | 4.10 | 20,674 |
| Countries Closest to Alaska | 0 | - | 4.92 | 120,285 |
| California A-Z | 0 | - | 4.49 | 28,528 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.23 | 45,232 |
| Countries Closest to Maine | 0 | - | 4.83 | 64,664 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,690 |
| The American Civil War | 0 | - | 4.61 | 51,411 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 489,065 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 31,653 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 44,820 |
| US States with an Empty Map | 0 | - | 5.00 | 604,884 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 201,965 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 46,181 |
| Draw All US State Borders | 0 | - | 4.99 | 123,719 |
| Top 10 Coldest U.S. States | 0 | - | 4.93 | 120,725 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 121,388 |
| Top 10 Most Native American U.S. States | 0 | - | 4.85 | 88,302 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 98,444 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 79,968 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.81 | 60,514 |
| Merged U.S. States | 0 | - | 4.36 | 43,136 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 90,684 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 128,069 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 161,920 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 99,541 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 56,155 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 96,117 |
| Ultimate Harry Potter Name Game | 0 | - | 4.95 | 481,929 |
| Commonwealth of Nations Countries | 0 | - | 4.93 | 233,089 |
| Vatican City Country Quiz | 0 | - | 4.52 | 42,983 |
| Most-Visited Countries by Popes | 0 | - | 4.55 | 81,764 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 67,463 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 79,620 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 92,972 |
| Colonies of Africa with a Map | 0 | - | 4.75 | 52,785 |
| Random American Countries on a Map | 0 | - | 4.96 | 95,610 |
| South America Flags Map Quiz | 0 | - | 4.95 | 82,946 |
| Most-Spoken Languages of the United States | 0 | - | 4.45 | 208,354 |
| Countries Closest to United States A-Z | 0 | - | 4.83 | 115,008 |
| History of Florida | 0 | - | 4.45 | 9,608 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 10,921 |
| Hawaiian Islands | 0 | - | 4.83 | 41,571 |
| Boston Red Sox Trivia | 0 | - | 4.09 | 7,348 |
| New York Yankees Trivia | 0 | - | 4.29 | 6,939 |
| History of Texas | 0 | - | 4.43 | 14,358 |
| U.S. States that Border Tennessee | 0 | - | 4.82 | 64,354 |
| American History Quotes #1 | 0 | - | 4.36 | 94,792 |
| People on Money - United States | 0 | - | 4.32 | 62,926 |
| American History Quotes #2 | 0 | - | 4.38 | 40,766 |
| Old West History | 0 | - | 4.30 | 15,119 |
| U.S. History Groups of Two | 0 | - | 4.23 | 43,712 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,045 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,436 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,627 |
| U.S. History Multiple Choice #3 | 0 | - | 4.42 | 24,374 |
| Last Names in U.S. History #1 | 0 | - | 4.24 | 35,677 |
| Fifty US States in One Minute | 0 | - | 4.54 | 3,471,909 |
| U.S. State Flags | 0 | - | 4.88 | 159,665 |
| U.S. States that Border Canada | 0 | - | 4.91 | 175,509 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 212,964 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 128,100 |
