| U.S. Presidents Quiz | 0 | - | 5.00 | 3,139,911 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 351,219 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 165,452 |
| U.S. Presidents by Picture | 0 | - | 4.86 | 392,250 |
| Play-Doh Presidents | 0 | - | 5.00 | 73,976 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.44 | 276,633 |
| U.S. Vice Presidents | 0 | - | 4.42 | 118,298 |
| U.S. Presidential Trivia #1 | 0 | - | 4.51 | 96,264 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.57 | 80,601 |
| U.S. Presidential Trivia #2 | 0 | - | 4.51 | 39,306 |
| Assassinated U.S. Presidents | 0 | - | 4.54 | 79,534 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 33,441 |
| Name a Valid U.S. President #2 | 0 | - | 4.53 | 59,857 |
| Governors Who Ran For President | 0 | - | 4.46 | 18,839 |
| U.S. Presidents by Event | 0 | - | 4.57 | 28,943 |
| First Ladies of the United States | 0 | - | 4.27 | 79,508 |
| Presidential Middle Names | 0 | - | 4.36 | 55,923 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 24,772 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.31 | 62,806 |
| Random U.S. Vice President to President | 0 | - | 4.57 | 23,059 |
| U.S. President Scramble | 0 | - | 4.39 | 90,308 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.62 | 13,768 |
| Add a Letter - Make a U.S. President | 0 | - | 4.66 | 21,783 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.41 | 22,442 |
| U.S. Presidents Who Died in Office | 0 | - | 4.73 | 31,070 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 122,031 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 44,928 |
| The John F. Kennedy Presidency | 0 | - | 4.45 | 40,800 |
| U.S. Presidential Quotes | 0 | - | 4.35 | 42,611 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.75 | 19,223 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 25,509 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 12,811 |
| The John Adams Presidency | 0 | - | 4.10 | 7,923 |
| The Theodore Roosevelt Presidency | 0 | - | 4.30 | 7,107 |
| U.S. Vice Presidential Trivia | 0 | - | 4.29 | 11,269 |
| The George Washington Presidency | 0 | - | 4.02 | 13,578 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 37,339 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.32 | 10,663 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.31 | 16,739 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.32 | 20,439 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.46 | 20,745 |
| The George W. Bush Presidency | 0 | - | 4.06 | 30,836 |
| The Barack Obama Presidency | 0 | - | 4.17 | 23,487 |
| Random U.S. States on a Map | 0 | - | 4.95 | 479,848 |
| Presidential Actors | 0 | - | 4.33 | 17,712 |
| The Bill Clinton Presidency | 0 | - | 4.18 | 30,102 |
| The George H. W. Bush Presidency | 0 | - | 4.35 | 20,491 |
| The Ronald Reagan Presidency | 0 | - | 4.25 | 23,533 |
| The Richard Nixon Presidency | 0 | - | 4.10 | 20,742 |
| The Jimmy Carter Presidency | 0 | - | 4.39 | 17,977 |
| U.S. Presidents True or False | 0 | - | 3.94 | 14,556 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.97 | 177,061 |
| The Kennedy Family | 0 | - | 3.85 | 13,202 |
| Six Flags Over Texas | 0 | - | 4.84 | 58,450 |
| Deadliest U.S. Wars | 0 | - | 4.82 | 157,055 |
| United States Map Quiz | 0 | - | 4.98 | 3,884,230 |
| Win the U.S. Presidential Election | 0 | - | 4.79 | 500,019 |
| George Bush... or George Bush | 0 | - | 3.89 | 7,693 |
| American Revolution Decoder | 0 | - | 4.12 | 19,936 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 217,386 |
| U.S. Map with Random Merged States | 0 | - | 4.95 | 271,314 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.43 | 68,619 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.67 | 73,243 |
| Random U.S. Presidents by Picture | 0 | - | 4.37 | 59,269 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 67,720 |
| Countries of the Soviet Union | 0 | - | 4.98 | 183,944 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 99,255 |
| U.S. State Border Crossings | 0 | - | 4.96 | 81,483 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 220,730 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 106,094 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.82 | 32,565 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 64,717 |
| U.S. Senators by State | 0 | - | 4.49 | 35,898 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.52 | 69,627 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 29,878 |
| Cities and Towns of Massachusetts | 0 | - | 4.89 | 59,376 |
| US States Quiz | 0 | - | 5.00 | 14,597,762 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.90 | 48,015 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 132,663 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 61,816 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.93 | 48,235 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 57,901 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 45,845 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 73,992 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.96 | 124,979 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.88 | 50,380 |
| Biggest Spanish Empire Countries | 0 | - | 4.90 | 92,045 |
| Countries of Iberia in History with a Map | 0 | - | 4.81 | 33,432 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 74,788 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 98,627 |
| Vatican City Country Quiz | 0 | - | 4.49 | 38,582 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.84 | 54,149 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 66,825 |
| Vietnam War Countries | 0 | - | 4.80 | 85,536 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 92,553 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 66,889 |
| Total United States Immigration by Country | 0 | - | 4.90 | 95,970 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 145,341 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.95 | 182,402 |
| Pixelated United States Map | 0 | - | 4.90 | 81,402 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 92,136 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 77,723 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,228 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 67,323 |
| U.S. History for Dummies | 0 | - | 4.50 | 64,810 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 99,520 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 95,220 |
| 10 Southernmost U.S. States | 0 | - | 4.84 | 98,326 |
| U.S. States with Short Names | 0 | - | 4.87 | 128,503 |
| U.S. States that Start with M | 0 | - | 4.91 | 149,342 |
| U.S. States By Population | 0 | - | 4.90 | 129,301 |
| U.S. States that Start with N | 0 | - | 4.95 | 154,488 |
| U.S. States with Longest Names | 0 | - | 4.84 | 35,571 |
| US States with an Empty Map | 0 | - | 5.00 | 549,442 |
| 10 Northernmost U.S. States | 0 | - | 4.87 | 72,316 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 338,550 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 77,139 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 57,929 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 55,275 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 144,617 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 167,332 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 98,676 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 89,634 |
| Ultimate Harry Potter Name Game | 0 | - | 4.95 | 462,024 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 221,065 |
| Most-Visited Countries by Popes | 0 | - | 4.67 | 62,511 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 59,981 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 70,877 |
| Countries Bordering China Since 1914 | 0 | - | 4.91 | 87,205 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 77,135 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 34,725 |
| Rivers of the United States | 0 | - | 4.93 | 49,133 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.95 | 270,351 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 123,539 |
| Countries that Beat the United States | 0 | - | 4.92 | 143,947 |
| Countries Closest to Alaska | 0 | - | 4.92 | 98,318 |
| Hawaiian Islands Map Quiz | 0 | - | 4.88 | 20,912 |
| Countries Closest to Maine | 0 | - | 4.84 | 58,430 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.84 | 21,131 |
| People on Money - United States | 0 | - | 4.31 | 61,647 |
| U.S. History Groups of Two | 0 | - | 4.27 | 35,152 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.19 | 41,047 |
| The American Civil War | 0 | - | 4.72 | 48,705 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 456,407 |
| Louisiana Purchase with a Map | 0 | - | 4.94 | 35,573 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 183,289 |
| Great Plains States and Provinces on a Map | 0 | - | 4.94 | 37,317 |
| U.S. States with the Longest International Borders | 0 | - | 4.81 | 40,003 |
| Top 10 Coldest U.S. States | 0 | - | 4.91 | 99,400 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 99,988 |
| Top 10 Most Native American U.S. States | 0 | - | 4.84 | 70,470 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 88,654 |
| U.S. States with the Most Immigrants | 0 | - | 4.86 | 72,798 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 56,914 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 70,431 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 115,052 |
| Countries that Bordered the USSR | 0 | - | 4.94 | 141,573 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 87,647 |
| Biggest Roman Empire Countries | 0 | - | 4.88 | 81,528 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 110,474 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 396,848 |
| Groups of Things - Harry Potter | 0 | - | 4.85 | 259,082 |
| Countries of Asia in 1900 | 0 | - | 4.49 | 53,019 |
| The Vietnam War | 0 | - | 4.41 | 32,589 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 97,803 |
| Colonies of Africa with a Map | 0 | - | 4.80 | 47,965 |
| Most-Spoken Languages of the United States | 0 | - | 4.45 | 162,893 |
| Countries Closest to United States A-Z | 0 | - | 4.86 | 106,419 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.31 | 10,281 |
| The American Revolution | 0 | - | 4.55 | 51,494 |
| Stephen Curry Quiz | 0 | - | 4.34 | 57,703 |
| History of Florida | 0 | - | 4.44 | 8,677 |
| The Life of Martin Luther King Jr. | 0 | - | 4.79 | 10,302 |
| Hawaiian Islands | 0 | - | 4.85 | 38,295 |
| Harvard University | 0 | - | 4.15 | 7,696 |
| History of Texas | 0 | - | 4.41 | 13,430 |
| LeBron... or Kobe? | 0 | - | 4.15 | 52,521 |
| History of Pennsylvania | 0 | - | 4.09 | 6,398 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 57,654 |
| History of Virginia | 0 | - | 4.33 | 10,905 |
| Washington Counties | 0 | - | 4.92 | 19,614 |
| American History Quotes #1 | 0 | - | 4.40 | 91,107 |
| American History Quotes #2 | 0 | - | 4.34 | 39,114 |
| Old West History | 0 | - | 4.28 | 14,768 |
| Events in U.S. History | 0 | - | 4.39 | 25,922 |
| Life of Benjamin Franklin | 0 | - | 4.18 | 6,209 |
| American Revolution - Multiple Choice | 0 | - | 4.31 | 18,726 |
| Embarrassing Chapters in US History | 0 | - | 4.15 | 31,348 |
| Last Names in U.S. History #1 | 0 | - | 4.24 | 34,116 |
| Fifty US States in One Minute | 0 | - | 4.55 | 3,219,514 |
| U.S. State Flags | 0 | - | 4.87 | 134,439 |
| U.S. States that Border Canada | 0 | - | 4.90 | 165,094 |
| U.S. States by Church Attendance | 0 | - | 4.58 | 30,141 |
| Category Elimination - U.S. States #1 | 0 | - | 4.91 | 193,356 |
| Cartoon Versions of U.S. States | 0 | - | 4.84 | 51,130 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.82 | 90,578 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.93 | 51,568 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 130,221 |
| Countries of Europe After World War II | 0 | - | 4.98 | 169,344 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 138,068 |
