| First Names of U.S. Presidents | 0 | - | 4.85 | 380,330 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,673,102 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,931 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,928 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,665 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,406 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 65,986 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,132 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,246 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,911 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,318 |
| Presidential Middle Names | 0 | - | 4.41 | 59,918 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,128 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,972 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,190 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,276 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,580 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,852 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,666 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,077 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,535 |
| U.S. President Scramble | 0 | - | 4.40 | 116,455 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,084 |
| Colonies of the Americas in 1775 with a Map | 0 | - | 4.88 | 19,376 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,614 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,197 |
| First Ladies of the United States | 0 | - | 4.28 | 85,369 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,869 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,160 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,665 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,080 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,881 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,439 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,317 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,732 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,773 |
| Presidential Actors | 0 | - | 4.36 | 19,115 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,396 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,449 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,761 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,961 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,696 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,546 |
| The George Washington Presidency | 0 | - | 4.03 | 14,505 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,690 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,566 |
| The John Adams Presidency | 0 | - | 4.12 | 8,706 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,903 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,710 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 193,008 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,263 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,638 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,808 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,744 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,794 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,235 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,573 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,191 |
| United States Map Quiz | 0 | - | 4.98 | 4,147,977 |
| Random U.S. States on a Map | 0 | - | 4.96 | 623,560 |
| Name a Valid U.S. President by Birth State | 0 | - | 4.60 | 9,717 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,195 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 391,496 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,166 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,398 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,125 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,194 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,803 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,528 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,153 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,980 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,556 |
| The Kennedy Family | 0 | - | 3.90 | 14,045 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,432 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,680 |
| US States Quiz | 0 | - | 5.00 | 16,775,192 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,095 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,614 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,262 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,502 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,833 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,930 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,472 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,349 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,446 |
| Harry Potter Last Names | 0 | - | 4.64 | 947,457 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 118,586 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,290 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,953 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,548 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,008 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,732 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 242,186 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 329,714 |
| Pixelated United States Map | 0 | - | 4.89 | 93,801 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,972 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,223 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,972 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,676 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,701 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 622,133 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 65,890 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,148 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,725 |
| The Most Recent... United States | 0 | - | 4.45 | 18,367 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,328 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,904 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,901 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,329 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,564 |
| U.S. States By Population | 0 | - | 4.92 | 152,769 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,869 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,157 |
| US States with an Empty Map | 0 | - | 5.00 | 621,253 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,189 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,936 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,972 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,243 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,515 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,365 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,850 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,316 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,968 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,188 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 53,709 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,629 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,400 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,326 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,816 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,813 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,434 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,521 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,937 |
| Rivers of the United States | 0 | - | 4.93 | 65,808 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,772 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,799 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,111 |
| U.S. Senators by State | 0 | - | 4.45 | 39,843 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,308 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,076 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,042 |
| American Founding Fathers | 0 | - | 4.42 | 23,108 |
| The American Revolution | 0 | - | 4.52 | 54,142 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,770 |
| History of Florida | 0 | - | 4.45 | 9,791 |
| Hawaiian Islands | 0 | - | 4.83 | 42,558 |
| Countries Closest to Maine | 0 | - | 4.85 | 66,734 |
| History of Texas | 0 | - | 4.43 | 14,578 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,201 |
| American History Quotes #1 | 0 | - | 4.37 | 95,817 |
| People on Money - United States | 0 | - | 4.31 | 63,260 |
| American History Quotes #2 | 0 | - | 4.38 | 41,293 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,334 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,820 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,045 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,686 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,141 |
| The American Civil War | 0 | - | 4.62 | 52,271 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 503,983 |
| U.S. State Flags | 0 | - | 4.89 | 168,725 |
| U.S. States that Border Canada | 0 | - | 4.91 | 183,600 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,065 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,584 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,970 |
| Draw All US State Borders | 0 | - | 4.99 | 135,202 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,207 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,069 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,499 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,391 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,191 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,684 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,861 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,288 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,908 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,483 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,854 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,150 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,753 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,590 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,108 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,251 |
| Shakespearean Phrases | 0 | - | 4.57 | 36,610 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,828 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,490 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,197 |
| The Vietnam War | 0 | - | 4.43 | 35,399 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,933 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,810 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,180 |
| Random African Countries on a Map | 0 | - | 4.99 | 294,618 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 218,091 |
| Territories of the United States | 0 | - | 4.79 | 52,248 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,482 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,960 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,316 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,934 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 93,688 |
| Most Common High School Mascots | 0 | - | 4.47 | 31,955 |
| Three Real and One Fake - U.S. History | 0 | - | 4.33 | 25,724 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,079 |
