| First Names of U.S. Presidents | 0 | - | 4.86 | 383,471 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,333 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,833 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,723,686 |
| Name a Valid U.S. President #1 | 0 | - | 4.90 | 193,678 |
| U.S. President Scramble | 0 | - | 4.40 | 117,435 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,602 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,917 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,273 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,550 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,333 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,217 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,521 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,272 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,590 |
| Presidential Middle Names | 0 | - | 4.41 | 60,698 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,671 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,877 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,183 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,910 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,621 |
| The Barack Obama Presidency | 0 | - | 4.14 | 25,499 |
| Random U.S. States on a Map | 0 | - | 4.96 | 629,958 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 235,183 |
| Presidential Actors | 0 | - | 4.36 | 19,244 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,531 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,550 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,890 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,092 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,934 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,358 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,760 |
| First Ladies of the United States | 0 | - | 4.28 | 85,933 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,306 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,452 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,355 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 194,660 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,089 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.31 | 58,185 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 29,022 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,074 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,936 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.42 | 24,060 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 303,815 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,234 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,777 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,749 |
| The John Adams Presidency | 0 | - | 4.12 | 8,787 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,773 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,923 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,604 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,143 |
| The George Washington Presidency | 0 | - | 4.03 | 14,605 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,983 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,373 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,754 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,583 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,710 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,297 |
| United States Map Quiz | 0 | - | 4.98 | 4,170,440 |
| U.S. Senators by State | 0 | - | 4.44 | 40,098 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,800 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 494,617 |
| Colonies of the Americas in 1775 with a Map | 0 | - | 4.88 | 19,932 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,503 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,643 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,855 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,765 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,956 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,908 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,645 |
| The Kennedy Family | 0 | - | 3.90 | 14,100 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,941 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,235 |
| US States Quiz | 0 | - | 5.00 | 16,985,591 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,980 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,282 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,282 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,187 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,678 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,774 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,512 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,120 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 397,061 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 119,546 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 128,307 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,430 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,330 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,464 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 246,268 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 335,155 |
| Pixelated United States Map | 0 | - | 4.88 | 94,769 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,470 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,387 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,141 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,080 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,861 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 635,258 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,686 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,588 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,389 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,006 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,209 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,229 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,279 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,295 |
| U.S. States By Population | 0 | - | 4.92 | 154,091 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,163 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,853 |
| US States with an Empty Map | 0 | - | 5.00 | 628,268 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,027 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,508 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,820 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,518 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,058 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,635 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,169 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,644 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,798 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,622 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,956 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 54,617 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,613 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,767 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,340 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,832 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,667 |
| Basic Harry Potter Quiz | 0 | - | 4.56 | 379,594 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 73,003 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.81 | 55,153 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,453 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,670 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,375 |
| Rivers of the United States | 0 | - | 4.93 | 66,627 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,140 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,577 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,789 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,646 |
| American Founding Fathers | 0 | - | 4.42 | 23,273 |
| American Revolution Decoder | 0 | - | 4.12 | 20,990 |
| Countries Closest to Alaska | 0 | - | 4.93 | 125,066 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,560 |
| People on Money - United States | 0 | - | 4.31 | 63,430 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,580 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,209 |
| Events in U.S. History | 0 | - | 4.41 | 28,816 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,188 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,775 |
| The Most Recent... United States | 0 | - | 4.46 | 18,564 |
| The American Civil War | 0 | - | 4.62 | 52,619 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,866 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,224 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,437 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 50,056 |
| Draw All US State Borders | 0 | - | 4.99 | 140,457 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,798 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,423 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,773 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,408 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,998 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,179 |
| Draw All US State Borders - Extreme | 0 | - | 4.99 | 79,216 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,987 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,109 |
| Random European Flag to Country | 0 | - | 4.90 | 184,095 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,387 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,614 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,464 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,034 |
| Monty Python Quotes | 0 | - | 4.89 | 42,601 |
| Shakespearean Phrases | 0 | - | 4.57 | 36,874 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,216 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 84,130 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,464 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 83,350 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,801 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,891 |
| Random African Flag to Country | 0 | - | 4.88 | 75,588 |
| Random American Countries on a Map | 0 | - | 4.96 | 100,154 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 222,331 |
| Names of Generations | 0 | - | 4.09 | 45,484 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,661 |
| Most Common High School Mascots | 0 | - | 4.47 | 32,306 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,414 |
| The American Revolution | 0 | - | 4.52 | 54,349 |
| Stephen Curry Quiz | 0 | - | 4.37 | 67,305 |
| History of Florida | 0 | - | 4.45 | 9,872 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,134 |
| Hawaiian Islands | 0 | - | 4.83 | 42,932 |
| History of Texas | 0 | - | 4.43 | 14,681 |
| LeBron James Trivia | 0 | - | 4.01 | 171,558 |
| LeBron... or Kobe? | 0 | - | 4.04 | 70,444 |
| History of Pennsylvania | 0 | - | 4.16 | 7,163 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,493 |
| History of Virginia | 0 | - | 4.33 | 11,640 |
| American History Quotes #1 | 0 | - | 4.37 | 96,188 |
| American History Quotes #2 | 0 | - | 4.38 | 41,501 |
| Old West History | 0 | - | 4.34 | 15,297 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,534 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,982 |
