| First Names of U.S. Presidents | 0 | - | 4.86 | 383,933 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,731,740 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,925 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 194,052 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,974 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,664 |
| Presidents that Beat Thomas Jefferson | 0 | - | 4.47 | 25,110 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,625 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,680 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,485 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,768 |
| Presidential Middle Names | 0 | - | 4.42 | 60,812 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,755 |
| Assassinated U.S. Presidents | 0 | - | 4.62 | 94,944 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,661 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,435 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,260 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,672 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,863 |
| U.S. Vice Presidents | 0 | - | 4.39 | 137,202 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,383 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,799 |
| First Ladies of the United States | 0 | - | 4.28 | 86,031 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,299 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,248 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,339 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,543 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,953 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,387 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,123 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.32 | 59,664 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,969 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,962 |
| U.S. President Scramble | 0 | - | 4.40 | 117,574 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,372 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,117 |
| Colonies of the Americas in 1775 with a Map | 0 | - | 4.89 | 20,020 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,872 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 29,084 |
| Presidential Actors | 0 | - | 4.36 | 19,264 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,559 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,564 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,908 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,111 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.38 | 24,091 |
| The George Washington Presidency | 0 | - | 4.03 | 14,622 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,789 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,778 |
| The John Adams Presidency | 0 | - | 4.12 | 8,799 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 17,003 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,788 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.97 | 194,981 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,398 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,777 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,941 |
| The Barack Obama Presidency | 0 | - | 4.14 | 25,534 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,031 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 235,465 |
| Name a Valid U.S. President by Birth State | 0 | - | 4.60 | 9,866 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,311 |
| United States Map Quiz | 0 | - | 4.98 | 4,173,811 |
| Random U.S. States on a Map | 0 | - | 4.96 | 631,318 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,713 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 398,052 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,719 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 84,262 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,969 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,996 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 114,039 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 76,081 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,153 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,660 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,239 |
| The Kennedy Family | 0 | - | 3.90 | 14,108 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 75,258 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,343 |
| US States Quiz | 0 | - | 5.00 | 17,025,776 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,915 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 218,253 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,774 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,582 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 86,115 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 66,035 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,038 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,743 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,239 |
| Harry Potter Last Names | 0 | - | 4.64 | 952,300 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 119,724 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 128,501 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,606 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,580 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,774 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 247,093 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 336,346 |
| Pixelated United States Map | 0 | - | 4.89 | 94,951 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,769 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,617 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,166 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,174 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,878 |
| Win the U.S. Presidential Election | 0 | - | 4.79 | 637,473 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,838 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,673 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,508 |
| The Most Recent... United States | 0 | - | 4.46 | 18,601 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,208 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,453 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,472 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,544 |
| U.S. States that Start with M | 0 | - | 4.94 | 188,592 |
| U.S. States By Population | 0 | - | 4.92 | 154,273 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,393 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,993 |
| US States with an Empty Map | 0 | - | 5.00 | 629,684 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,183 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,995 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,608 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,223 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 161,188 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,329 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,783 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,883 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,730 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 68,073 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.97 | 54,785 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,813 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,140 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,533 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 87,036 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,064 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 73,120 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.81 | 55,303 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,721 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,844 |
| 10 Longest Rivers in the United States | 0 | - | 4.86 | 39,465 |
| Rivers of the United States | 0 | - | 4.93 | 66,798 |
| Names of Generations | 0 | - | 4.09 | 45,603 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,843 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,421 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,934 |
| U.S. Senators by State | 0 | - | 4.44 | 40,148 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,877 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,763 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,491 |
| American Founding Fathers | 0 | - | 4.42 | 23,298 |
| The American Revolution | 0 | - | 4.52 | 54,394 |
| Countries Closest to Alaska | 0 | - | 4.93 | 125,317 |
| History of Florida | 0 | - | 4.45 | 9,886 |
| Hawaiian Islands | 0 | - | 4.83 | 43,019 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,711 |
| History of Texas | 0 | - | 4.43 | 14,703 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,580 |
| American History Quotes #1 | 0 | - | 4.37 | 96,255 |
| People on Money - United States | 0 | - | 4.31 | 63,489 |
| American History Quotes #2 | 0 | - | 4.38 | 41,540 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,633 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.11 | 52,434 |
| Events in U.S. History | 0 | - | 4.41 | 28,863 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,222 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,809 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,368 |
| The American Civil War | 0 | - | 4.62 | 52,667 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 511,052 |
| U.S. State Flags | 0 | - | 4.88 | 173,543 |
| U.S. States that Border Canada | 0 | - | 4.91 | 187,103 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,472 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,909 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 50,295 |
| Draw All US State Borders | 0 | - | 4.99 | 141,601 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 126,058 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,716 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 93,005 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,589 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 83,120 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,288 |
| Draw All US State Borders - Extreme | 0 | - | 4.99 | 79,516 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,547 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,420 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,568 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,629 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,656 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 105,005 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,622 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,453 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,212 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,639 |
| Shakespearean Phrases | 0 | - | 4.58 | 36,929 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,636 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,664 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 83,562 |
| The Vietnam War | 0 | - | 4.44 | 35,694 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,952 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 90,122 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 223,185 |
| Territories of the United States | 0 | - | 4.80 | 52,676 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,935 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 176,263 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,363 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,607 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 94,498 |
