| U.S. Presidents Quiz | 0 | - | 5.00 | 3,719,115 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,365 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,998 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,754 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,454 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,151 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 24,033 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,945 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,199 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,093 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,439 |
| Presidential Middle Names | 0 | - | 4.41 | 60,613 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,573 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,814 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,581 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,152 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,038 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 28,977 |
| U.S. President Scramble | 0 | - | 4.40 | 117,352 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,783 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,332 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,726 |
| First Ladies of the United States | 0 | - | 4.28 | 85,870 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,283 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,391 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,320 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,363 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,067 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,541 |
| U.S. Presidents Who Added the Most Territory | 0 | - | 4.66 | 14,205 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,914 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,883 |
| Vietnam War Countries | 0 | - | 4.82 | 94,506 |
| Presidents that Beat Thomas Jefferson | 0 | - | 4.49 | 25,060 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,256 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,765 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,728 |
| The John Adams Presidency | 0 | - | 4.12 | 8,773 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,763 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,899 |
| The George Washington Presidency | 0 | - | 4.03 | 14,591 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,972 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,743 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,304 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,137 |
| The Kennedy Family | 0 | - | 3.90 | 14,091 |
| U.S. Senators by State | 0 | - | 4.44 | 40,067 |
| The Barack Obama Presidency | 0 | - | 4.13 | 25,473 |
| U.S. History Timeline Quiz | 0 | - | 4.96 | 57,141 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,288 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,584 |
| Presidential Actors | 0 | - | 4.36 | 19,228 |
| Random U.S. States on a Map | 0 | - | 4.96 | 629,241 |
| The American Revolution | 0 | - | 4.52 | 54,326 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,574 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 633,358 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,201 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,884 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,637 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,988 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,232 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,762 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,499 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,517 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,786 |
| The Iraq War | 0 | - | 4.47 | 15,691 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,926 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,730 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,586 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,371 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,513 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,538 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,871 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,074 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,090 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,397 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,039 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,773 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,341 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,615 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,173 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,813 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,299 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,832 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,051 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,797 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,601 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,178 |
| US States Quiz | 0 | - | 5.00 | 16,963,768 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,280 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,100 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,718 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,511 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,638 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,398 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,353 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,609 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,474 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,342 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,333 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,595 |
| Pixelated United States Map | 0 | - | 4.88 | 94,660 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,288 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,258 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,986 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,345 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,131 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,853 |
| American Revolution Decoder | 0 | - | 4.12 | 20,982 |
| California A-Z | 0 | - | 4.49 | 28,829 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,544 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,333 |
| The Most Recent... United States | 0 | - | 4.46 | 18,544 |
| The American Civil War | 0 | - | 4.62 | 52,585 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,327 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,815 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,157 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 112,036 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,052 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,701 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,059 |
| U.S. States By Population | 0 | - | 4.92 | 153,973 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,008 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,766 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,125 |
| US States with an Empty Map | 0 | - | 5.00 | 627,547 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,955 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,731 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,451 |
| Most Common Immigrant Origin by U.S. State | 0 | - | 4.90 | 67,843 |
| Draw All US State Borders | 0 | - | 4.99 | 139,967 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,963 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,515 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,087 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,573 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,762 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,564 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,294 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,928 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,898 |
| Draw All US State Borders - Extreme | 0 | - | 4.99 | 79,076 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,803 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,912 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,269 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,452 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 54,537 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,519 |
| All Modern-Day Countries Ever Controlled by Portugal | 0 | - | 4.93 | 44,425 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,270 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,729 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,940 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,051 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,583 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 84,063 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,388 |
| The Persian Gulf War | 0 | - | 4.02 | 8,472 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,967 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,747 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 55,084 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,794 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,581 |
| Rivers of the United States | 0 | - | 4.93 | 66,546 |
| Names of Generations | 0 | - | 4.09 | 45,398 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,559 |
| American Founding Fathers | 0 | - | 4.42 | 23,264 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,922 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 47,127 |
| History of Florida | 0 | - | 4.45 | 9,864 |
| Hawaiian Islands | 0 | - | 4.83 | 42,864 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,470 |
| Harvard University | 0 | - | 4.15 | 8,318 |
| History of Texas | 0 | - | 4.43 | 14,678 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,463 |
| American History Quotes #1 | 0 | - | 4.37 | 96,170 |
| People on Money - United States | 0 | - | 4.31 | 63,409 |
| American History Quotes #2 | 0 | - | 4.38 | 41,486 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,564 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,177 |
| Events in U.S. History | 0 | - | 4.41 | 28,783 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,174 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,767 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,315 |
| U.S. State Flags | 0 | - | 4.89 | 172,213 |
| U.S. States that Border Canada | 0 | - | 4.91 | 186,230 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,531 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,202 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,959 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,695 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,317 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,665 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,144 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,360 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 162,083 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,388 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,198 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 494,399 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 83,247 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,585 |
| Random American Countries on a Map | 0 | - | 4.96 | 100,023 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 221,843 |
