| U.S. Presidents Quiz | 0 | - | 5.00 | 3,690,598 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,456 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,579 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,309 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,645 |
| Presidential Middle Names | 0 | - | 4.41 | 60,142 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,218 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,483 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,372 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,951 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,895 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,208 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,104 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,244 |
| First Ladies of the United States | 0 | - | 4.28 | 85,558 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,206 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,976 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,171 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,942 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,805 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,931 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,064 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,853 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 28,804 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,608 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,717 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,627 |
| The John Adams Presidency | 0 | - | 4.12 | 8,737 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,730 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,838 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,182 |
| The George Washington Presidency | 0 | - | 4.03 | 14,539 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,922 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,310 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,662 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,697 |
| Vietnam War Countries | 0 | - | 4.82 | 94,113 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,259 |
| U.S. President Scramble | 0 | - | 4.40 | 116,679 |
| U.S. Senators by State | 0 | - | 4.45 | 39,919 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,588 |
| The Kennedy Family | 0 | - | 3.90 | 14,064 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,479 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,175 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,688 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,585 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,171 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,889 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 625,878 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,041 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,156 |
| The American Revolution | 0 | - | 4.52 | 54,224 |
| United States Map Quiz | 0 | - | 4.98 | 4,154,860 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,122 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,644 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,537 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,374 |
| Harvard University | 0 | - | 4.15 | 8,292 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,670 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,049 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,450 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,246 |
| Presidential Actors | 0 | - | 4.36 | 19,158 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,178 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,880 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,796 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,468 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,552 |
| The Iraq War | 0 | - | 4.47 | 15,641 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,383 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,245 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,365 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,151 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,441 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,481 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,810 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,008 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,800 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,845 |
| US States Quiz | 0 | - | 5.00 | 16,842,316 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,693 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,970 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 78,349 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,369 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,776 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,677 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,647 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,372 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,672 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,173 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,830 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,370 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,263 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,399 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 331,295 |
| Pixelated United States Map | 0 | - | 4.87 | 94,118 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,420 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,568 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,067 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,823 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,767 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,199 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,128 |
| Las Vegas Casinos | 0 | - | 4.12 | 38,045 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,295 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,964 |
| The Most Recent... United States | 0 | - | 4.45 | 18,417 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,255 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,682 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,218 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,244 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,765 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,036 |
| U.S. States By Population | 0 | - | 4.92 | 153,143 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,257 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,353 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,411 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,176 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,131 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,500 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,822 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,606 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,086 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,441 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,135 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,411 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 53,980 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,978 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,801 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,627 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,150 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,320 |
| The Persian Gulf War | 0 | - | 4.02 | 8,445 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,587 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,716 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,123 |
| Rivers of the United States | 0 | - | 4.93 | 66,095 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,195 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,633 |
| American Revolution Decoder | 0 | - | 4.10 | 20,944 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,164 |
| California A-Z | 0 | - | 4.49 | 28,778 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,838 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,006 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,096 |
| The American Civil War | 0 | - | 4.62 | 52,383 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,742 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,394 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,435 |
| US States with an Empty Map | 0 | - | 5.00 | 623,594 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 208,527 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,279 |
| Draw All US State Borders | 0 | - | 4.99 | 136,848 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,527 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,457 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,851 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,632 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,359 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,843 |
| Merged U.S. States | 0 | - | 4.37 | 44,105 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,810 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,980 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,214 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,555 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,973 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,297 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,425 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 493,044 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,236 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,304 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,623 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,744 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,537 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,128 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,121 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,371 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,359 |
| South America Flags Map Quiz | 0 | - | 4.95 | 87,680 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 219,386 |
| Names of Generations | 0 | - | 4.10 | 44,443 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,030 |
| Most Common High School Mascots | 0 | - | 4.47 | 32,063 |
| American Founding Fathers | 0 | - | 4.42 | 23,206 |
| History of Florida | 0 | - | 4.45 | 9,815 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,099 |
| Hawaiian Islands | 0 | - | 4.83 | 42,662 |
| Boston Red Sox Trivia | 0 | - | 4.09 | 7,540 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,191 |
| History of Texas | 0 | - | 4.43 | 14,610 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,282 |
| American History Quotes #1 | 0 | - | 4.37 | 95,974 |
| People on Money - United States | 0 | - | 4.31 | 63,326 |
| American History Quotes #2 | 0 | - | 4.38 | 41,379 |
| Old West History | 0 | - | 4.33 | 15,260 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,422 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,006 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,517 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,917 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,711 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,219 |
