| U.S. Presidents Quiz | 0 | - | 5.00 | 3,718,634 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,327 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,951 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,742 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,438 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,117 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,929 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,177 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,052 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,408 |
| Presidential Middle Names | 0 | - | 4.41 | 60,597 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 24,028 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,564 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,800 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,567 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,145 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 28,973 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,029 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,769 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,328 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,717 |
| First Ladies of the United States | 0 | - | 4.28 | 85,858 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,281 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,383 |
| U.S. President Scramble | 0 | - | 4.40 | 117,341 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,312 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,061 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,911 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,357 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,532 |
| Vietnam War Countries | 0 | - | 4.82 | 94,496 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,881 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,256 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,764 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,724 |
| The John Adams Presidency | 0 | - | 4.12 | 8,771 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,760 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,897 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,300 |
| The Kennedy Family | 0 | - | 3.90 | 14,091 |
| The George Washington Presidency | 0 | - | 4.03 | 14,589 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,970 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,739 |
| U.S. Senators by State | 0 | - | 4.44 | 40,064 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,135 |
| The Barack Obama Presidency | 0 | - | 4.13 | 25,470 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,288 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,583 |
| Presidential Actors | 0 | - | 4.36 | 19,226 |
| Random U.S. States on a Map | 0 | - | 4.96 | 629,181 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,566 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 632,927 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,200 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,882 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,635 |
| The American Revolution | 0 | - | 4.52 | 54,326 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,701 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,232 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,756 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,482 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,505 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,780 |
| The Iraq War | 0 | - | 4.47 | 15,690 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,918 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,726 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,580 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,363 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,512 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,538 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,869 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,073 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,064 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,381 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,029 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,765 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,334 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,598 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,156 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,802 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,283 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,771 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,535 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,130 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,046 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,851 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,779 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,593 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,172 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,325 |
| US States Quiz | 0 | - | 5.00 | 16,961,561 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,251 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,076 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,664 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,482 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,617 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,375 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,330 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,583 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,460 |
| The Persian Gulf War | 0 | - | 4.02 | 8,472 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,330 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,330 |
| Pixelated United States Map | 0 | - | 4.88 | 94,652 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,264 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,238 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,970 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,325 |
| American Revolution Decoder | 0 | - | 4.12 | 20,982 |
| California A-Z | 0 | - | 4.49 | 28,827 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 47,124 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,538 |
| Events in U.S. History | 0 | - | 4.41 | 28,781 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,172 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,330 |
| The Most Recent... United States | 0 | - | 4.46 | 18,542 |
| The American Civil War | 0 | - | 4.62 | 52,584 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,796 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,114 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 112,013 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,029 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,672 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,030 |
| U.S. States By Population | 0 | - | 4.92 | 153,962 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,992 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,758 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,113 |
| US States with an Empty Map | 0 | - | 5.00 | 627,472 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,945 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,715 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,444 |
| Draw All US State Borders | 0 | - | 4.99 | 139,859 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,955 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,508 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,076 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,564 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,758 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,558 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,283 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,920 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,892 |
| Draw All US State Borders - Extreme | 0 | - | 4.99 | 79,059 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,779 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,891 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,244 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,428 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 54,521 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,504 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,257 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,712 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,927 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,027 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,580 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 84,058 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,374 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,959 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,741 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 55,078 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,782 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,573 |
| Random American Countries on a Map | 0 | - | 4.96 | 100,009 |
| Rivers of the United States | 0 | - | 4.93 | 66,538 |
| Names of Generations | 0 | - | 4.09 | 45,388 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,543 |
| American Founding Fathers | 0 | - | 4.42 | 23,259 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,904 |
| History of Florida | 0 | - | 4.45 | 9,864 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,131 |
| Hawaiian Islands | 0 | - | 4.83 | 42,857 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,458 |
| Harvard University | 0 | - | 4.15 | 8,317 |
| History of Texas | 0 | - | 4.43 | 14,677 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,461 |
| American History Quotes #1 | 0 | - | 4.37 | 96,167 |
| People on Money - United States | 0 | - | 4.31 | 63,406 |
| American History Quotes #2 | 0 | - | 4.38 | 41,483 |
| Old West History | 0 | - | 4.34 | 15,292 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,561 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,175 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,530 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,972 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,767 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,314 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,552,181 |
| U.S. State Flags | 0 | - | 4.89 | 172,166 |
| U.S. States that Border Canada | 0 | - | 4.91 | 186,202 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,529 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,184 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,039 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,282 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,946 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,686 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,305 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,648 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,136 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,353 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 162,061 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,382 |
| Countries of the German Empire | 0 | - | 4.51 | 38,111 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,969 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,191 |
