| U.S. Presidents Quiz | 0 | - | 5.00 | 3,677,836 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,853 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,325 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,006 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,386 |
| Presidential Middle Names | 0 | - | 4.41 | 59,974 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,032 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,263 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,297 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,872 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,723 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,521 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,750 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,208 |
| First Ladies of the United States | 0 | - | 4.28 | 85,405 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,167 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,726 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,102 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,894 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,745 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,883 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,214 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,796 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,719 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,562 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,693 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,576 |
| The John Adams Presidency | 0 | - | 4.12 | 8,710 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,715 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,813 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,981 |
| The George Washington Presidency | 0 | - | 4.03 | 14,512 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,907 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,273 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,641 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,299 |
| Vietnam War Countries | 0 | - | 4.83 | 93,937 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,241 |
| U.S. President Scramble | 0 | - | 4.40 | 116,502 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,563 |
| The Kennedy Family | 0 | - | 3.90 | 14,052 |
| U.S. Senators by State | 0 | - | 4.45 | 39,862 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,417 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,136 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,600 |
| The American Revolution | 0 | - | 4.52 | 54,163 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,049 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,966 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,793 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 623,119 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,087 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,985 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,562 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,100 |
| United States Map Quiz | 0 | - | 4.98 | 4,149,514 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,457 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 66,012 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,329 |
| Harvard University | 0 | - | 4.15 | 8,281 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,561 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,463 |
| The Iraq War | 0 | - | 4.47 | 15,612 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,575 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 34,993 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,345 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,129 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,080 |
| Presidential Actors | 0 | - | 4.36 | 19,126 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,404 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,457 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,774 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,974 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,460 |
| U.S. States Closest to Moscow | 0 | - | 4.50 | 47,936 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,268 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,493 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,397 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,245 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,619 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,923 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,115 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,211 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,856 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 242,522 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,713 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,531 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 65,946 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,717 |
| US States Quiz | 0 | - | 5.00 | 16,792,496 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,240 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,623 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,935 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,048 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,550 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,439 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,954 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,507 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,946 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,023 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,993 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 330,112 |
| Pixelated United States Map | 0 | - | 4.89 | 93,879 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,087 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,335 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,917 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,244 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,015 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,723 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,192 |
| American Revolution Decoder | 0 | - | 4.10 | 20,912 |
| California A-Z | 0 | - | 4.49 | 28,748 |
| Las Vegas Casinos | 0 | - | 4.12 | 38,022 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,195 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,793 |
| The Most Recent... United States | 0 | - | 4.45 | 18,382 |
| The American Civil War | 0 | - | 4.62 | 52,304 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,233 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,433 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 504,421 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,988 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,990 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,463 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,683 |
| U.S. States By Population | 0 | - | 4.92 | 152,842 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,966 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,212 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,167 |
| US States with an Empty Map | 0 | - | 5.00 | 621,761 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,251 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,004 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,019 |
| Draw All US State Borders | 0 | - | 4.99 | 135,627 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,328 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,602 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,412 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,912 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,352 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,012 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,452 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,237 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,250 |
| Merged U.S. States | 0 | - | 4.37 | 44,012 |
| Draw All US State Borders - Extreme | 0 | - | 4.99 | 78,030 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,456 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,608 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,927 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,272 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 53,796 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,269 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,758 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,394 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,908 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,193 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,943 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,200 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,448 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,555 |
| The Persian Gulf War | 0 | - | 4.02 | 8,429 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,472 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,970 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,574 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,892 |
| South America Flags Map Quiz | 0 | - | 4.95 | 87,314 |
| Rivers of the United States | 0 | - | 4.93 | 65,888 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,841 |
| American Founding Fathers | 0 | - | 4.42 | 23,139 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,885 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,714 |
| History of Florida | 0 | - | 4.45 | 9,796 |
| Hawaiian Islands | 0 | - | 4.83 | 42,575 |
| Countries Closest to Maine | 0 | - | 4.85 | 66,806 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,166 |
| History of Texas | 0 | - | 4.43 | 14,588 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,228 |
| American History Quotes #1 | 0 | - | 4.37 | 95,872 |
| People on Money - United States | 0 | - | 4.31 | 63,282 |
| American History Quotes #2 | 0 | - | 4.38 | 41,328 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,350 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,882 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,055 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,693 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,171 |
| U.S. State Flags | 0 | - | 4.89 | 169,066 |
| U.S. States that Border Canada | 0 | - | 4.91 | 183,850 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,354 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,965 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,052 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,285 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,150 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,604 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,728 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,906 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,007 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,809 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,647 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 492,333 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,283 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,239 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,083 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 218,431 |
