| First Names of U.S. Presidents | 0 | - | 4.85 | 379,932 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,269 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,781 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,663,215 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,379 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,736 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,230 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,523 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,099 |
| U.S. President Scramble | 0 | - | 4.40 | 116,317 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,049 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,043 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,496 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 192,752 |
| U.S. Vice Presidents | 0 | - | 4.41 | 135,292 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,093 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,690 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,136 |
| Presidential Middle Names | 0 | - | 4.41 | 59,797 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,842 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,951 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,216 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,275 |
| Presidential Actors | 0 | - | 4.36 | 19,087 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,783 |
| Random U.S. States on a Map | 0 | - | 4.96 | 622,530 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,521 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,371 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,431 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,733 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,934 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,539 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 65,902 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,176 |
| First Ladies of the United States | 0 | - | 4.28 | 85,310 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,129 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,484 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,034 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,852 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,709 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,834 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,731 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,183 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,640 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,504 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,667 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,531 |
| The John Adams Presidency | 0 | - | 4.12 | 8,686 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,693 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,789 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,481 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,780 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,966 |
| The George Washington Presidency | 0 | - | 4.03 | 14,485 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,888 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,242 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,623 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 300,368 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,225 |
| United States Map Quiz | 0 | - | 4.98 | 4,144,775 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,391 |
| Colonies of the Americas in 1775 with a Map | 0 | - | 4.88 | 19,292 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,082 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 126,954 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,441 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,350 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,893 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,012 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,336 |
| Harry Potter Last Names | 0 | - | 4.64 | 946,569 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 390,587 |
| Most-Visited Countries by Popes | 0 | - | 4.55 | 83,285 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 118,418 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,087 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,057 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,349 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,526 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,811 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,003 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,422 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 241,483 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,841 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,911 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,584 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,682 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 620,142 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,541 |
| The Kennedy Family | 0 | - | 3.90 | 14,029 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,202 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,747 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,593 |
| US States Quiz | 0 | - | 5.00 | 16,734,682 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,594 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,187 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,630 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,650 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,303 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,188 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,165 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,557 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,798 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,864 |
| Pixelated United States Map | 0 | - | 4.89 | 93,641 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,694 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,011 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,600 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,819 |
| American Revolution Decoder | 0 | - | 4.10 | 20,889 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,067 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,022 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,593 |
| The Most Recent... United States | 0 | - | 4.45 | 18,322 |
| The American Civil War | 0 | - | 4.62 | 52,211 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,942 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 502,849 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,558 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,602 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,907 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,152 |
| U.S. States By Population | 0 | - | 4.92 | 152,530 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,599 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,986 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,779 |
| US States with an Empty Map | 0 | - | 5.00 | 619,910 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,998 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,725 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,840 |
| Draw All US State Borders | 0 | - | 4.99 | 134,292 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,012 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,229 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,179 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,613 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,144 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,756 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,206 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,043 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,953 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 94,978 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,174 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,661 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,911 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 53,584 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,494 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,228 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,647 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,953 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,596 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,344 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,354 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,833 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,388 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,601 |
| Random African Countries on a Map | 0 | - | 4.99 | 294,065 |
| Rivers of the United States | 0 | - | 4.93 | 65,653 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,598 |
| U.S. Senators by State | 0 | - | 4.45 | 39,791 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,200 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 80,966 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 74,979 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,530 |
| American Founding Fathers | 0 | - | 4.41 | 23,088 |
| The American Revolution | 0 | - | 4.52 | 54,101 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,531 |
| Stephen Curry Quiz | 0 | - | 4.36 | 66,471 |
| History of Florida | 0 | - | 4.45 | 9,776 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,069 |
| Hawaiian Islands | 0 | - | 4.83 | 42,492 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,575 |
| History of Texas | 0 | - | 4.43 | 14,566 |
| LeBron James Trivia | 0 | - | 4.01 | 170,067 |
| LeBron... or Kobe? | 0 | - | 4.04 | 69,346 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,141 |
| American History Quotes #1 | 0 | - | 4.37 | 95,733 |
| People on Money - United States | 0 | - | 4.31 | 63,232 |
| American History Quotes #2 | 0 | - | 4.38 | 41,248 |
| Old West History | 0 | - | 4.33 | 15,234 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,285 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,765 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,498 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,865 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,659 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,107 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,522,425 |
| U.S. State Flags | 0 | - | 4.89 | 167,919 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,981 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,102 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 218,921 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,818 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,745 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,043 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,857 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,266 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,619 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,754 |
| Name a Valid U.S. President by Birth State | 0 | - | 4.60 | 9,689 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,648 |
| Random European Countries on a Map | 0 | - | 4.97 | 282,288 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,260 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,645 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,817 |
