| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,865 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,050 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,674,475 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,029 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,401 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,944 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,947 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,677 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,929 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,897 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,215 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,459 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,191 |
| Countries of the German Empire | 0 | - | 4.51 | 37,786 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,703 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,583 |
| Random U.S. States on a Map | 0 | - | 4.96 | 623,676 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,451 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,380 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,273 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,942 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,337 |
| Presidential Middle Names | 0 | - | 4.41 | 59,936 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,876 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,989 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,212 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,285 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 193,044 |
| American Revolution Decoder | 0 | - | 4.10 | 20,906 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,796 |
| Vietnam War Countries | 0 | - | 4.83 | 93,901 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,409 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,130 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,081 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,858 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,545 |
| U.S. President Scramble | 0 | - | 4.40 | 116,475 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,087 |
| The American Revolution | 0 | - | 4.52 | 54,150 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,818 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 301,002 |
| Countries of the Italian Empire | 0 | - | 4.21 | 27,627 |
| United States Map Quiz | 0 | - | 4.98 | 4,148,655 |
| Arms Exports - United States | 0 | - | 4.75 | 61,959 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,979 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,435 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,716 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,635 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,199 |
| First Ladies of the United States | 0 | - | 4.28 | 85,382 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,161 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,673 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,086 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,887 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,542 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,264 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,735 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,506 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,179 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,547 |
| Presidential Actors | 0 | - | 4.36 | 19,119 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,397 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,451 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,764 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,964 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,319 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,362 |
| Biggest Axis-Controlled Cities | 0 | - | 4.43 | 48,746 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,323 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,180 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,213 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,581 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,836 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,067 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,173 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,768 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 242,310 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 329,855 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,683 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 622,489 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,550 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,982 |
| The George Washington Presidency | 0 | - | 4.03 | 14,505 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,690 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,569 |
| The John Adams Presidency | 0 | - | 4.12 | 8,706 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,903 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,713 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,267 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,638 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,685 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,811 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,472 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 65,910 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,696 |
| US States Quiz | 0 | - | 5.00 | 16,781,316 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,144 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,548 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 75,871 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,973 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,495 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,384 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,680 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 71,900 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,443 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,876 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.41 | 51,600 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,717 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,631 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,980 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,242 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,945 |
| Pixelated United States Map | 0 | - | 4.89 | 93,824 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,028 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,262 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,830 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,148 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,779 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,155 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,050 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,734 |
| The American Civil War | 0 | - | 4.62 | 52,286 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,370 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 504,113 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,936 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,933 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,376 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,610 |
| U.S. States By Population | 0 | - | 4.92 | 152,795 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,904 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,171 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,095 |
| US States with an Empty Map | 0 | - | 5.00 | 621,437 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,208 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,135 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,959 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,985 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,267 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,552 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,383 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,872 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,335 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,987 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,423 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,206 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,205 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,351 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,532 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,880 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,198 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,860 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,142 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,884 |
| Prime Ministers of the UK | 0 | - | 4.96 | 436,684 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,517 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,444 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,947 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,846 |
| Rivers of the United States | 0 | - | 4.93 | 65,838 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,798 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,319 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,099 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,054 |
| Mayors of New York City | 0 | - | 3.96 | 12,178 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,191 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,450 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 65,994 |
| American Founding Fathers | 0 | - | 4.42 | 23,113 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,803 |
| Stephen Curry Quiz | 0 | - | 4.36 | 66,613 |
| History of Florida | 0 | - | 4.45 | 9,791 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,080 |
| Hawaiian Islands | 0 | - | 4.83 | 42,564 |
| Countries Closest to Maine | 0 | - | 4.85 | 66,757 |
| History of Texas | 0 | - | 4.43 | 14,581 |
| LeBron James Trivia | 0 | - | 4.01 | 170,297 |
| LeBron... or Kobe? | 0 | - | 4.04 | 69,530 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,212 |
| American History Quotes #1 | 0 | - | 4.37 | 95,838 |
| People on Money - United States | 0 | - | 4.31 | 63,266 |
| American History Quotes #2 | 0 | - | 4.38 | 41,306 |
| Old West History | 0 | - | 4.33 | 15,241 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,339 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,833 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,508 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,892 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,688 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,147 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,527,506 |
| U.S. State Flags | 0 | - | 4.89 | 168,900 |
| U.S. States that Border Canada | 0 | - | 4.91 | 183,684 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,348 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,234 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,040 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,792 |
| U.S. States Richer than Their Neighbors | 0 | - | 4.43 | 27,301 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,988 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,460 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,227 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,090 |
