| U.S. Presidents Quiz | 0 | - | 5.00 | 3,703,893 |
| American Revolution Decoder | 0 | - | 4.10 | 20,963 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,081 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,070 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,332 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,798 |
| Vietnam War Countries | 0 | - | 4.82 | 94,297 |
| The American Revolution | 0 | - | 4.52 | 54,268 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,655 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,305 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,822 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,609 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,898 |
| Presidential Middle Names | 0 | - | 4.41 | 60,348 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,404 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,639 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,026 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,460 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 193,754 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,103 |
| American Founding Fathers | 0 | - | 4.42 | 23,233 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,937 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,564 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 302,721 |
| Countries of the German Empire | 0 | - | 4.51 | 37,979 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,548 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,788 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,374 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,270 |
| First Ladies of the United States | 0 | - | 4.28 | 85,695 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,236 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,193 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,225 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,985 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,846 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,634 |
| United States Map Quiz | 0 | - | 4.98 | 4,161,513 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,967 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,382 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,924 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,569 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,718 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,046 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,567 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,544 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,610 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,771 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,549 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,517 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,658 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,147 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,164 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,740 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,717 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,658 |
| The John Adams Presidency | 0 | - | 4.12 | 8,753 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,747 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,862 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,607 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 28,866 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,302 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,234 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,997 |
| Biggest Cities in the Confederate States in 1860 | 0 | - | 4.41 | 23,647 |
| US States Quiz | 0 | - | 5.00 | 16,897,024 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,287 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,435 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,576 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 82,763 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,878 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,183 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,020 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,977 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,343 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,029 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,761 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,679 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 244,463 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 332,645 |
| Pixelated United States Map | 0 | - | 4.87 | 94,367 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,831 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,887 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,909 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 628,843 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,474 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,502 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,838 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,030 |
| The George Washington Presidency | 0 | - | 4.03 | 14,553 |
| U.S. President Scramble | 0 | - | 4.40 | 116,855 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,940 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,330 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,695 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,306 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,404 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,122 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,031 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,568 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,556 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,165 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,465 |
| U.S. States By Population | 0 | - | 4.92 | 153,649 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,585 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,521 |
| US States with an Empty Map | 0 | - | 5.00 | 625,337 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,630 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,416 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,264 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,709 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,184 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,879 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,339 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,622 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,366 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,662 |
| Countries of the Italian Empire | 0 | - | 4.21 | 27,709 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,208 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,137 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,974 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,380 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,804 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,707 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,884 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,268 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,207 |
| Rivers of the United States | 0 | - | 4.93 | 66,261 |
| Names of Generations | 0 | - | 4.09 | 45,069 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,253 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,572 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,656 |
| Arms Exports - United States | 0 | - | 4.77 | 62,468 |
| U.S. Senators by State | 0 | - | 4.44 | 39,981 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,564 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,402 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,243 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,713 |
| Movies with America in the Title | 0 | - | 4.17 | 28,771 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,461 |
| Stephen Curry Quiz | 0 | - | 4.37 | 67,029 |
| History of Florida | 0 | - | 4.45 | 9,832 |
| Hawaiian Islands | 0 | - | 4.83 | 42,747 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,190 |
| Harvard University | 0 | - | 4.15 | 8,301 |
| History of Texas | 0 | - | 4.43 | 14,642 |
| LeBron James Trivia | 0 | - | 4.01 | 171,075 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,352 |
| American History Quotes #1 | 0 | - | 4.37 | 96,067 |
| People on Money - United States | 0 | - | 4.31 | 63,355 |
| American History Quotes #2 | 0 | - | 4.38 | 41,426 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,486 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,089 |
| Events in U.S. History | 0 | - | 4.41 | 28,691 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,123 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,740 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,263 |
| The American Civil War | 0 | - | 4.62 | 52,461 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,207 |
| U.S. State Flags | 0 | - | 4.88 | 170,861 |
| U.S. States that Border Canada | 0 | - | 4.91 | 185,244 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,454 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,730 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,223 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,575 |
| Draw All US State Borders | 0 | - | 4.99 | 138,091 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,765 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,783 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,216 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,859 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,550 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,949 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,182 |
| Name a Valid U.S. President by Birth State | 0 | - | 4.60 | 9,785 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,224 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,353 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,510 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,933 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,161 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,481 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,957 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,642 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 493,577 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,559 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,003 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,837 |
| The Vietnam War | 0 | - | 4.44 | 35,558 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,301 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,393 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,501 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 220,444 |
| Territories of the United States | 0 | - | 4.80 | 52,435 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,716 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,573 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,338 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,244 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 94,072 |
| Most Common High School Mascots | 0 | - | 4.47 | 32,159 |
| Three Real and One Fake - U.S. History | 0 | - | 4.33 | 25,785 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,095 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,822 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,088 |
