| U.S. Presidents Quiz | 0 | - | 5.00 | 3,648,648 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,599 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,735 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,840 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,349 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,908 |
| Presidential Middle Names | 0 | - | 4.41 | 59,633 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,661 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,737 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,144 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,704 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,313 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,339 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,155 |
| First Ladies of the United States | 0 | - | 4.28 | 85,195 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,099 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,180 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,983 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,817 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,670 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,807 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,244 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,669 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,559 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,443 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,653 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,429 |
| The John Adams Presidency | 0 | - | 4.12 | 8,673 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,678 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,763 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,599 |
| The George Washington Presidency | 0 | - | 4.03 | 14,469 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,861 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,195 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,602 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,166 |
| Vietnam War Countries | 0 | - | 4.83 | 93,536 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,202 |
| U.S. President Scramble | 0 | - | 4.40 | 116,141 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,523 |
| The Kennedy Family | 0 | - | 3.90 | 14,021 |
| U.S. Senators by State | 0 | - | 4.44 | 39,718 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,347 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,078 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,444 |
| The American Revolution | 0 | - | 4.52 | 54,033 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,124 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,616 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,563 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 617,410 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,021 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,955 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,423 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 22,996 |
| United States Map Quiz | 0 | - | 4.98 | 4,139,686 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,331 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 65,764 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,240 |
| Harvard University | 0 | - | 4.15 | 8,257 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 87,921 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,263 |
| The Iraq War | 0 | - | 4.47 | 15,539 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,341 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 34,865 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,050 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 80,802 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 74,865 |
| Presidential Actors | 0 | - | 4.36 | 19,048 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,340 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,407 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,710 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,915 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,175 |
| U.S. States Closest to Moscow | 0 | - | 4.50 | 47,748 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,692 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,181 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,710 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,839 |
| Name the U.S. National Parks | 0 | - | 4.85 | 57,516 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,160 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,516 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,754 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,023 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 239,963 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,478 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 72,967 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,533 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,434 |
| US States Quiz | 0 | - | 5.00 | 16,679,386 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,056 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,772 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,296 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,241 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 69,992 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,910 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 142,998 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,671 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,105 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,606 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,764 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,530 |
| Pixelated United States Map | 0 | - | 4.89 | 93,308 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,286 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,714 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,273 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,388 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,869 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,663 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,176 |
| American Revolution Decoder | 0 | - | 4.10 | 20,872 |
| California A-Z | 0 | - | 4.49 | 28,698 |
| Las Vegas Casinos | 0 | - | 4.12 | 37,953 |
| Six Flags Over Texas | 0 | - | 4.79 | 62,971 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,404 |
| The Most Recent... United States | 0 | - | 4.45 | 18,260 |
| The American Civil War | 0 | - | 4.62 | 52,099 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,172 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,579 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,198 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,205 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,268 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,483 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,755 |
| U.S. States By Population | 0 | - | 4.92 | 152,254 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,255 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,773 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,449 |
| US States with an Empty Map | 0 | - | 5.00 | 618,116 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,837 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,447 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,706 |
| Draw All US State Borders | 0 | - | 4.99 | 133,155 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,781 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,774 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,030 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,395 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,022 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,608 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 100,964 |
| U.S. States with the Most Immigrants | 0 | - | 4.84 | 81,866 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,737 |
| Merged U.S. States | 0 | - | 4.36 | 43,826 |
| Draw All US State Borders - Extreme | 0 | - | 4.99 | 77,379 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,541 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,792 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,359 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,409 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 53,375 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,208 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,282 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,064 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,401 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,749 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,078 |
| Vatican City Country Quiz | 0 | - | 4.53 | 43,958 |
| Most-Visited Countries by Popes | 0 | - | 4.55 | 83,090 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,133 |
| The Persian Gulf War | 0 | - | 4.02 | 8,396 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,199 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,626 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,191 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,327 |
| South America Flags Map Quiz | 0 | - | 4.95 | 86,361 |
| Rivers of the United States | 0 | - | 4.93 | 65,427 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,313 |
| American Founding Fathers | 0 | - | 4.41 | 23,062 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,195 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,438 |
| History of Florida | 0 | - | 4.45 | 9,757 |
| Hawaiian Islands | 0 | - | 4.83 | 42,402 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,369 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,102 |
| History of Texas | 0 | - | 4.43 | 14,547 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,061 |
| American History Quotes #1 | 0 | - | 4.37 | 95,655 |
| People on Money - United States | 0 | - | 4.31 | 63,196 |
| American History Quotes #2 | 0 | - | 4.38 | 41,214 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,218 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,699 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,976 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,633 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,061 |
| U.S. State Flags | 0 | - | 4.89 | 166,694 |
| U.S. States that Border Canada | 0 | - | 4.91 | 181,908 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,205 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,439 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,465 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,781 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,558 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 90,940 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,508 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,593 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,358 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,459 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,302 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 491,171 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 81,679 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,890 |
| Random American Countries on a Map | 0 | - | 4.96 | 98,523 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,299 |
