| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,357 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,541 |
| U.S. Senators by State | 0 | - | 4.44 | 40,066 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,978 |
| Vietnam War Countries | 0 | - | 4.82 | 94,505 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 633,246 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,719,009 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,942 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,452 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,752 |
| Random U.S. States on a Map | 0 | - | 4.96 | 629,222 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,883 |
| Presidents that Beat Thomas Jefferson | 0 | - | 4.49 | 25,060 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,729 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,584 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,368 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 24,031 |
| U.S. President Scramble | 0 | - | 4.40 | 117,351 |
| US States Quiz | 0 | - | 5.00 | 16,963,170 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,274 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,511 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 194,219 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,808 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 112,032 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,047 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,696 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,056 |
| U.S. States By Population | 0 | - | 4.92 | 153,972 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,002 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,764 |
| US States with an Empty Map | 0 | - | 5.00 | 627,520 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,728 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,451 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,962 |
| Presidential Actors | 0 | - | 4.36 | 19,227 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 28,974 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,034 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,145 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,122 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,196 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,955 |
| Draw All US State Borders | 0 | - | 4.99 | 139,949 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,659 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,795 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,908 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,909 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,137 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,362 |
| Colonies of the Americas in 1775 with a Map | 0 | - | 4.88 | 19,877 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,543 |
| U.S. State Flags | 0 | - | 4.89 | 172,201 |
| U.S. States that Border Canada | 0 | - | 4.91 | 186,225 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,050 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,294 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,785 |
| U.S. States Closest to Tokyo | 0 | - | 4.89 | 61,060 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,925 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,195 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,086 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,432 |
| Presidential Middle Names | 0 | - | 4.41 | 60,608 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,256 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,571 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,812 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,150 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,579 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,304 |
| The American Revolution | 0 | - | 4.52 | 54,326 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,552,344 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,531 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,170 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,082 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,391 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,038 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,058 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,772 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,340 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,609 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,167 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,810 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,297 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,819 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,050 |
| History of Florida | 0 | - | 4.45 | 9,864 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,131 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,789 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,598 |
| History of Texas | 0 | - | 4.43 | 14,678 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,176 |
| New England States | 0 | - | 4.51 | 59,873 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.70 | 1,396,912 |
| U.S. States by Land Area | 0 | - | 4.63 | 52,997 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,093 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,041 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,690,059 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,226 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,087 |
| U.S. States by Borders | 0 | - | 4.61 | 35,432 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 188,055 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,642 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,266 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,349 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,596 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,330 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,578 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 52,753 |
| Pixelated United States Map | 0 | - | 4.88 | 94,657 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,280 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,250 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,982 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,336 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,782 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,331 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,724 |
| First Ladies of the United States | 0 | - | 4.28 | 85,867 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,282 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,389 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,137 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,318 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,067 |
| The Barack Obama Presidency | 0 | - | 4.13 | 25,472 |
| The Kennedy Family | 0 | - | 3.90 | 14,091 |
| California A-Z | 0 | - | 4.49 | 28,828 |
| History of California | 0 | - | 4.40 | 18,785 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,252 |
| History of Illinois | 0 | - | 4.24 | 11,249 |
| History of Maryland | 0 | - | 4.06 | 6,720 |
| History of Massachusetts | 0 | - | 4.14 | 8,419 |
| Top 10 Boston Red Sox of All-Time | 0 | - | 4.02 | 11,901 |
| History of Michigan | 0 | - | 4.26 | 6,974 |
| History of New York | 0 | - | 4.36 | 16,402 |
| History of New Jersey | 0 | - | 4.38 | 7,300 |
| History of Ohio | 0 | - | 4.14 | 7,372 |
| History of Tennessee | 0 | - | 4.29 | 7,684 |
| History of Washington State | 0 | - | 4.27 | 6,899 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,572 |
| U.S. State Quarters Picture Quiz #1 | 0 | - | 4.45 | 52,882 |
| U.S. State Quarters Picture Quiz #2 | 0 | - | 4.75 | 38,528 |
| U.S. States by Clue #1 | 0 | - | 4.51 | 39,337 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 53,075 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.64 | 66,006 |
| U.S. States with More Cows than People | 0 | - | 4.74 | 47,848 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 66,672 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,585 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,300 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,723 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,953 |
| U.S. States with Spanish Names | 0 | - | 4.50 | 88,141 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.43 | 32,544 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 235,048 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,306 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 49,223 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,898 |
| Longest U.S. State Borders | 0 | - | 4.69 | 40,050 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,634 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,719 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,514 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,082 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,569 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,762 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,563 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,291 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,928 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,897 |
| Draw All US State Borders - Extreme | 0 | - | 4.99 | 79,071 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,266 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,443 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,935 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,046 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,386 |
| The Iraq War | 0 | - | 4.47 | 15,691 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,965 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,746 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,791 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,580 |
| U.S. Presidents Who Added the Most Territory | 0 | - | 4.66 | 14,202 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,914 |
| Rivers of the United States | 0 | - | 4.93 | 66,542 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,552 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,230 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,584 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,801 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,201 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,765 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,725 |
| The John Adams Presidency | 0 | - | 4.12 | 8,772 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,762 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,899 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,917 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,644 |
| California... or Florida? | 0 | - | 4.60 | 51,763 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 47,127 |
| Hawaiian Islands | 0 | - | 4.83 | 42,864 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,462 |
| Harvard University | 0 | - | 4.15 | 8,318 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,462 |
| Regions of U.S. States | 0 | - | 4.37 | 44,105 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,406 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,619 |
| Major U.S. Rivers with State Names | 0 | - | 4.49 | 39,711 |
