| First Names of U.S. Presidents | 0 | - | 4.86 | 381,603 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,699,008 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,820 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,581 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,513 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,309 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,246 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,680 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 193,625 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,735 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,498 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,810 |
| Presidential Middle Names | 0 | - | 4.41 | 60,260 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,350 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,599 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,434 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,501 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,138 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,993 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,968 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,017 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,274 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,259 |
| First Ladies of the United States | 0 | - | 4.28 | 85,645 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,228 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,098 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,200 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,965 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,830 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,459 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,496 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,826 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,021 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,955 |
| U.S. President Scramble | 0 | - | 4.40 | 116,781 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,893 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,194 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 28,844 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,745 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,691 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,636 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,730 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,652 |
| The John Adams Presidency | 0 | - | 4.12 | 8,748 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,744 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,854 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,803 |
| Name a Valid U.S. President by Birth State | 0 | - | 4.60 | 9,772 |
| The George Washington Presidency | 0 | - | 4.03 | 14,547 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,935 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,324 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,678 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,189 |
| The Barack Obama Presidency | 0 | - | 4.13 | 25,399 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,409 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 302,496 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,266 |
| United States Map Quiz | 0 | - | 4.98 | 4,158,602 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,736 |
| Presidential Actors | 0 | - | 4.36 | 19,175 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,230 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,603 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,749 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,731 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,872 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,483 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,949 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,471 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,653 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,469 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,505 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 244,067 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 332,035 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,074 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,880 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,811 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 627,702 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,061 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,601 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,204 |
| The Kennedy Family | 0 | - | 3.90 | 14,071 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,058 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,231 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,944 |
| US States Quiz | 0 | - | 5.00 | 16,876,637 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,062 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,376 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 81,932 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,686 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,025 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,898 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,999 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,629 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,275 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,176 |
| Pixelated United States Map | 0 | - | 4.87 | 94,272 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,684 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,772 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,455 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,463 |
| American Revolution Decoder | 0 | - | 4.10 | 20,957 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,364 |
| Events in U.S. History | 0 | - | 4.41 | 28,673 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,114 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,065 |
| The Most Recent... United States | 0 | - | 4.45 | 18,450 |
| The American Civil War | 0 | - | 4.62 | 52,420 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,869 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 506,624 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,429 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,436 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,004 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,300 |
| U.S. States By Population | 0 | - | 4.92 | 153,546 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,451 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,441 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,613 |
| US States with an Empty Map | 0 | - | 5.00 | 624,659 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,517 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,304 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,212 |
| Draw All US State Borders | 0 | - | 4.99 | 137,587 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,624 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,958 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,703 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,185 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,500 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,221 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,765 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,472 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,512 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,051 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,217 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,390 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,787 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 54,147 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,127 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,869 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,285 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,543 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,420 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,366 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,904 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,669 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,249 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,816 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,284 |
| Rivers of the United States | 0 | - | 4.93 | 66,205 |
| Names of Generations | 0 | - | 4.09 | 44,922 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,172 |
| U.S. Senators by State | 0 | - | 4.44 | 39,959 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,515 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,344 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,198 |
| American Founding Fathers | 0 | - | 4.42 | 23,225 |
| The American Revolution | 0 | - | 4.52 | 54,257 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,346 |
| Stephen Curry Quiz | 0 | - | 4.37 | 66,974 |
| History of Florida | 0 | - | 4.45 | 9,826 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,105 |
| Hawaiian Islands | 0 | - | 4.83 | 42,716 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,114 |
| History of Texas | 0 | - | 4.43 | 14,628 |
| LeBron James Trivia | 0 | - | 4.01 | 170,932 |
| LeBron... or Kobe? | 0 | - | 4.04 | 69,997 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,320 |
| American History Quotes #1 | 0 | - | 4.37 | 96,029 |
| People on Money - United States | 0 | - | 4.31 | 63,346 |
| American History Quotes #2 | 0 | - | 4.38 | 41,401 |
| Old West History | 0 | - | 4.34 | 15,275 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,466 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,055 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,519 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,931 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,733 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,242 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,539,185 |
| U.S. State Flags | 0 | - | 4.89 | 170,485 |
| U.S. States that Border Canada | 0 | - | 4.91 | 184,945 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 208,943 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,811 |
| Category Elimination - U.S. States #2 | 0 | - | 4.83 | 134,214 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,475 |
| Random U.S. States on a Map | 0 | - | 4.96 | 626,469 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,649 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,657 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,057 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,909 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,131 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,804 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,498 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,942 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,091 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,245 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,618 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,884 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,408 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,706 |
| The Vietnam War | 0 | - | 4.44 | 35,530 |
| U.S. States Closest to Tokyo | 0 | - | 4.89 | 60,478 |
