| U.S. Presidents Quiz | 0 | - | 5.00 | 3,689,283 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,132 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,402 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,149 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,323 |
| Vietnam War Countries | 0 | - | 4.82 | 94,099 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,541 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,547 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,278 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,616 |
| Presidential Middle Names | 0 | - | 4.41 | 60,122 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,203 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,456 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,364 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 193,403 |
| American Founding Fathers | 0 | - | 4.42 | 23,202 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,555 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,947 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,877 |
| The American Revolution | 0 | - | 4.52 | 54,217 |
| Biggest Cities in the Confederate States in 1860 | 0 | - | 4.41 | 23,619 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,599 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 208,473 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,183 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 302,022 |
| Countries of the German Empire | 0 | - | 4.51 | 37,876 |
| United States Map Quiz | 0 | - | 4.98 | 4,154,358 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,503 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,959 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,079 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,242 |
| First Ladies of the United States | 0 | - | 4.28 | 85,547 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,929 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,203 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,958 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,167 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,939 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,382 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,878 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,798 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,768 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,404 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,663 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,474 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,121 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,641 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,167 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,848 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,534,252 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,829 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,180 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,637 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,368 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,807 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,206 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,346 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,347 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,210 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,288 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 331,143 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,811 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 625,555 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,604 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,659 |
| The George Washington Presidency | 0 | - | 4.03 | 14,538 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,715 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,620 |
| The John Adams Presidency | 0 | - | 4.12 | 8,735 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,921 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,728 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,301 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,659 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,837 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,532 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,162 |
| Movies with America in the Title | 0 | - | 4.17 | 28,755 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,759 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,095 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,827 |
| US States Quiz | 0 | - | 5.00 | 16,836,278 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,389,304 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,631 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,923 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 76,154 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,315 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,728 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,641 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,760 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,264 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,158 |
| Countries that Beat Australia | 0 | - | 4.92 | 92,630 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,113 |
| Pixelated United States Map | 0 | - | 4.87 | 94,100 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,373 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,542 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,168 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,570 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,439 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,478 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,806 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,003 |
| U.S. President Scramble | 0 | - | 4.40 | 116,653 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,284 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,092 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,940 |
| The American Civil War | 0 | - | 4.62 | 52,379 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,657 |
| U.S. States by Clue #1 | 0 | - | 4.51 | 39,001 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,189 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,227 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,723 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,991 |
| U.S. States By Population | 0 | - | 4.92 | 153,020 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,212 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,334 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,412 |
| US States with an Empty Map | 0 | - | 5.00 | 623,410 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,397 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 76,909 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,152 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 48,960 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,112 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,479 |
| Tourist Attractions by U.S. State | 0 | - | 4.46 | 62,569 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,796 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,569 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,056 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,431 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,125 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,605 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,346 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,395 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,757 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,930 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,179 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,512 |
| Countries that Beat Germany | 0 | - | 4.95 | 106,136 |
| Countries of the Italian Empire | 0 | - | 4.21 | 27,667 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,417 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,331 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,939 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,127 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,799 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,114 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,401 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,207 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,710 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,569 |
| Countries that Beat China | 0 | - | 4.86 | 115,519 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,111 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,085 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 171,074 |
| Africa Map with Random Merged Countries | 0 | - | 4.95 | 73,375 |
| Rivers of the United States | 0 | - | 4.93 | 66,080 |
| Names of Generations | 0 | - | 4.10 | 44,280 |
| American Junk Food Brands #1 | 0 | - | 3.84 | 60,903 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,997 |
| U.S. Senators by State | 0 | - | 4.45 | 39,911 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,435 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,231 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,140 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,650 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,681 |
| Free in the Answers | 0 | - | 4.08 | 51,454 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,125 |
| States that Beat California | 0 | - | 4.54 | 63,541 |
| Stephen Curry Quiz | 0 | - | 4.37 | 66,816 |
| History of Florida | 0 | - | 4.45 | 9,812 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,099 |
| Hawaiian Islands | 0 | - | 4.83 | 42,655 |
| Countries Closest to Maine | 0 | - | 4.85 | 66,982 |
| Harvard University | 0 | - | 4.15 | 8,290 |
| States that Beat New York | 0 | - | 4.50 | 44,885 |
| History of Texas | 0 | - | 4.43 | 14,607 |
| States that Beat Texas | 0 | - | 4.58 | 44,297 |
| LeBron James Trivia | 0 | - | 4.01 | 170,662 |
| LeBron... or Kobe? | 0 | - | 4.04 | 69,773 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,277 |
| American History Quotes #1 | 0 | - | 4.37 | 95,966 |
| People on Money - United States | 0 | - | 4.31 | 63,323 |
| American History Quotes #2 | 0 | - | 4.38 | 41,376 |
| Old West History | 0 | - | 4.33 | 15,259 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,410 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,995 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,517 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,917 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,708 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,219 |
| U.S. State Flags | 0 | - | 4.89 | 169,793 |
| U.S. States that Border Canada | 0 | - | 4.91 | 184,404 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,390 |
| U.S. States by Emoji | 0 | - | 4.48 | 100,706 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 41,918 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,249 |
| Random U.S. States on a Map | 0 | - | 4.96 | 625,243 |
| Random Point on Land to US State | 0 | - | 4.61 | 69,107 |
| U.S. States by Nickname | 0 | - | 4.57 | 69,484 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,500 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,428 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,819 |
