| U.S. Presidents Quiz | 0 | - | 5.00 | 3,663,998 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,265 |
| U.S. Vice Presidents | 0 | - | 4.41 | 135,311 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,103 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,710 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,152 |
| Presidential Middle Names | 0 | - | 4.41 | 59,809 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,853 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,964 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,222 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,789 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,546 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,965 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,178 |
| First Ladies of the United States | 0 | - | 4.28 | 85,313 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,131 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,493 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,038 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,852 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,711 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,835 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,321 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,734 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,642 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,508 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,669 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,534 |
| The John Adams Presidency | 0 | - | 4.12 | 8,688 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,694 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,790 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,788 |
| The George Washington Presidency | 0 | - | 4.03 | 14,485 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,890 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,243 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,623 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,767 |
| Vietnam War Countries | 0 | - | 4.83 | 93,754 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,225 |
| U.S. President Scramble | 0 | - | 4.40 | 116,327 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,541 |
| The Kennedy Family | 0 | - | 3.90 | 14,033 |
| U.S. Senators by State | 0 | - | 4.45 | 39,797 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,380 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,102 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,530 |
| The American Revolution | 0 | - | 4.52 | 54,105 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,503 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,793 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,672 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 620,328 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,047 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,966 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,500 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,056 |
| United States Map Quiz | 0 | - | 4.98 | 4,145,091 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,400 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 65,903 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,277 |
| Harvard University | 0 | - | 4.15 | 8,270 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,279 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,361 |
| The Iraq War | 0 | - | 4.47 | 15,574 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,454 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 34,930 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,218 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 80,981 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 74,984 |
| Presidential Actors | 0 | - | 4.36 | 19,092 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,372 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,432 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,737 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,937 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,932 |
| U.S. States Closest to Moscow | 0 | - | 4.50 | 47,851 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,032 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,347 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,108 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,069 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,374 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,540 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,825 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,014 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,454 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 241,552 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,593 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,224 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,768 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,603 |
| US States Quiz | 0 | - | 5.00 | 16,738,665 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,649 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,220 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,654 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,679 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,319 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,202 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,489 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,206 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,571 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,809 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,868 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,914 |
| Pixelated United States Map | 0 | - | 4.89 | 93,650 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,718 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,034 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,624 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,853 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,911 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,683 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,183 |
| American Revolution Decoder | 0 | - | 4.10 | 20,890 |
| California A-Z | 0 | - | 4.49 | 28,730 |
| Las Vegas Casinos | 0 | - | 4.12 | 37,986 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,077 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,604 |
| The Most Recent... United States | 0 | - | 4.45 | 18,328 |
| The American Civil War | 0 | - | 4.62 | 52,215 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,201 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,977 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 502,933 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,589 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,627 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,947 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,204 |
| U.S. States By Population | 0 | - | 4.92 | 152,553 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,638 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,002 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,796 |
| US States with an Empty Map | 0 | - | 5.00 | 620,047 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,010 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,739 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,852 |
| Draw All US State Borders | 0 | - | 4.99 | 134,358 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,038 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,242 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,188 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,624 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,149 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,767 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,219 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,051 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,958 |
| Merged U.S. States | 0 | - | 4.36 | 43,929 |
| Draw All US State Borders - Extreme | 0 | - | 4.99 | 77,715 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,010 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,200 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,681 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,934 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 53,598 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,239 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,504 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,237 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,662 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,965 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,620 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,087 |
| Most-Visited Countries by Popes | 0 | - | 4.55 | 83,301 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,355 |
| The Persian Gulf War | 0 | - | 4.02 | 8,415 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,360 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,838 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,398 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,619 |
| South America Flags Map Quiz | 0 | - | 4.95 | 86,916 |
| Rivers of the United States | 0 | - | 4.93 | 65,665 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,624 |
| American Founding Fathers | 0 | - | 4.41 | 23,090 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,565 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,594 |
| History of Florida | 0 | - | 4.45 | 9,777 |
| Hawaiian Islands | 0 | - | 4.83 | 42,494 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,593 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,138 |
| History of Texas | 0 | - | 4.43 | 14,569 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,146 |
| American History Quotes #1 | 0 | - | 4.37 | 95,735 |
| People on Money - United States | 0 | - | 4.31 | 63,232 |
| American History Quotes #2 | 0 | - | 4.38 | 41,248 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,287 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,767 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,025 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,659 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,111 |
| U.S. State Flags | 0 | - | 4.89 | 167,987 |
| U.S. States that Border Canada | 0 | - | 4.91 | 183,031 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,297 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,136 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,767 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,055 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,878 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,284 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,626 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,762 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,669 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,654 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,480 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 491,815 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,010 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,067 |
| Random American Countries on a Map | 0 | - | 4.96 | 98,844 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 217,392 |
