| First Names of U.S. Presidents | 0 | - | 4.86 | 355,843 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,209,712 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 397,404 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 169,294 |
| Play-Doh Presidents | 0 | - | 5.00 | 75,858 |
| U.S. Presidential Quotes | 0 | - | 4.36 | 42,852 |
| Random U.S. Presidents by Picture | 0 | - | 4.37 | 60,647 |
| People in Pictures with Ronald Reagan | 0 | - | 4.36 | 37,834 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.97 | 179,751 |
| U.S. Vice Presidents | 0 | - | 4.43 | 121,262 |
| U.S. Presidential Trivia #1 | 0 | - | 4.51 | 97,963 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.57 | 82,681 |
| U.S. Presidential Trivia #2 | 0 | - | 4.52 | 40,301 |
| Assassinated U.S. Presidents | 0 | - | 4.54 | 80,726 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 33,711 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 220,237 |
| The Bill Clinton Presidency | 0 | - | 4.18 | 30,283 |
| The George H. W. Bush Presidency | 0 | - | 4.35 | 20,627 |
| The Ronald Reagan Presidency | 0 | - | 4.25 | 23,721 |
| The Richard Nixon Presidency | 0 | - | 4.10 | 20,928 |
| The Jimmy Carter Presidency | 0 | - | 4.39 | 18,144 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.43 | 281,661 |
| Name a Valid U.S. President #2 | 0 | - | 4.52 | 61,989 |
| The John F. Kennedy Presidency | 0 | - | 4.45 | 41,199 |
| Governors Who Ran For President | 0 | - | 4.47 | 18,971 |
| U.S. Presidents by Event | 0 | - | 4.58 | 29,323 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 26,024 |
| First Ladies of the United States | 0 | - | 4.27 | 80,485 |
| Presidential Middle Names | 0 | - | 4.37 | 56,408 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 24,940 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 65,767 |
| Random U.S. Vice President to President | 0 | - | 4.55 | 28,097 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.63 | 14,078 |
| Add a Letter - Make a U.S. President | 0 | - | 4.66 | 22,155 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.41 | 22,621 |
| U.S. Presidents Who Died in Office | 0 | - | 4.75 | 31,430 |
| U.S. President Scramble | 0 | - | 4.39 | 93,537 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.47 | 21,085 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.20 | 30,511 |
| People in Pictures with Barack Obama | 0 | - | 4.11 | 45,310 |
| U.S. Presidents by State | 0 | - | 4.29 | 66,203 |
| The George W. Bush Presidency | 0 | - | 4.06 | 31,010 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 12,930 |
| The John Adams Presidency | 0 | - | 4.10 | 8,030 |
| The Theodore Roosevelt Presidency | 0 | - | 4.33 | 7,173 |
| U.S. Vice Presidential Trivia | 0 | - | 4.31 | 11,568 |
| The Barack Obama Presidency | 0 | - | 4.17 | 23,740 |
| Deadliest U.S. Wars | 0 | - | 4.83 | 159,477 |
| Name a Valid U.S. President by Birth State | 0 | - | 4.53 | 8,568 |
| Harry Potter Last Names | 0 | - | 4.66 | 896,279 |
| Presidential Actors | 0 | - | 4.33 | 17,934 |
| The George Washington Presidency | 0 | - | 4.02 | 13,700 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.34 | 10,732 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.32 | 16,915 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.32 | 20,620 |
| Six Flags Over Texas | 0 | - | 4.84 | 59,211 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 277,165 |
| Vatican City Country Quiz | 0 | - | 4.50 | 39,808 |
| United States Map Quiz | 0 | - | 4.98 | 3,925,666 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 352,595 |
| Most-Visited Countries by Popes | 0 | - | 4.66 | 77,244 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 108,959 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 117,437 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 107,933 |
| George Bush... or George Bush | 0 | - | 3.89 | 7,742 |
| Random U.S. States on a Map | 0 | - | 4.95 | 505,437 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 204,039 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.92 | 51,164 |
| Countries of the Soviet Union | 0 | - | 4.98 | 185,814 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 75,080 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 94,875 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 101,725 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.84 | 55,534 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 94,804 |
| U.S. State Border Crossings | 0 | - | 4.96 | 82,772 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 223,805 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.84 | 34,382 |
| Total United States Immigration by Country | 0 | - | 4.89 | 97,736 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 66,142 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 148,688 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.94 | 187,881 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,410 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 67,992 |
| Win the U.S. Presidential Election | 0 | - | 4.79 | 519,125 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.73 | 19,316 |
| U.S. Presidents True or False | 0 | - | 3.94 | 14,664 |
| The Kennedy Family | 0 | - | 3.84 | 13,356 |
| Cities and Towns of Massachusetts | 0 | - | 4.90 | 61,730 |
| US States Quiz | 0 | - | 5.00 | 14,928,085 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 342,502 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 135,263 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 64,088 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.94 | 50,647 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 59,835 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 47,232 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.89 | 51,924 |
| Countries of Iberia in History with a Map | 0 | - | 4.82 | 34,722 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.96 | 76,706 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 91,053 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 223,712 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 61,495 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 67,610 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 88,419 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 78,924 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 67,963 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 35,317 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.96 | 279,718 |
| Pixelated United States Map | 0 | - | 4.90 | 83,156 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 94,750 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 79,859 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 125,731 |
| Countries that Beat the United States | 0 | - | 4.92 | 147,414 |
| American Revolution Decoder | 0 | - | 4.12 | 20,076 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.85 | 22,258 |
| U.S. History for Dummies | 0 | - | 4.50 | 66,021 |
| The American Civil War | 0 | - | 4.74 | 49,369 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 101,562 |
| Word Scramble - U.S. States | 0 | - | 4.96 | 462,758 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 97,414 |
| 10 Southernmost U.S. States | 0 | - | 4.85 | 100,453 |
| U.S. States with Short Names | 0 | - | 4.87 | 131,553 |
| U.S. States that Start with M | 0 | - | 4.91 | 152,136 |
| U.S. States By Population | 0 | - | 4.90 | 131,169 |
| U.S. States that Start with N | 0 | - | 4.95 | 156,665 |
| U.S. States with Longest Names | 0 | - | 4.84 | 36,626 |
| Louisiana Purchase with a Map | 0 | - | 4.95 | 37,039 |
| US States with an Empty Map | 0 | - | 5.00 | 560,561 |
| 10 Northernmost U.S. States | 0 | - | 4.89 | 74,547 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 78,657 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 58,822 |
| Draw All US State Borders | 0 | - | 4.99 | 96,922 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 56,803 |
| U.S. States with the Longest International Borders | 0 | - | 4.81 | 41,953 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 146,485 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 168,560 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 99,621 |
| Top 10 Least Obese U.S. States | 0 | - | 4.81 | 69,082 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 90,548 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 74,052 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 72,546 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 117,062 |
| Countries that Bordered the USSR | 0 | - | 4.94 | 154,156 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 90,170 |
| Shakespeare Quotes Quiz | 0 | - | 4.41 | 62,494 |
| Shakespearean Phrases | 0 | - | 4.56 | 34,296 |
| Random Asian Countries on a Map | 0 | - | 4.96 | 153,425 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 72,692 |
| The Vietnam War | 0 | - | 4.41 | 33,079 |
| Random African Countries on a Map | 0 | - | 4.98 | 251,699 |
| Rivers of the United States | 0 | - | 4.92 | 57,764 |
| Countries Closest to United States A-Z | 0 | - | 4.84 | 108,268 |
| U.S. Senators by State | 0 | - | 4.49 | 36,516 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.43 | 69,717 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.69 | 74,501 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.33 | 10,433 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.52 | 70,579 |
| The American Revolution | 0 | - | 4.55 | 51,947 |
| Countries Closest to Alaska | 0 | - | 4.91 | 100,048 |
| Stephen Curry Quiz | 0 | - | 4.35 | 60,331 |
| History of Florida | 0 | - | 4.44 | 8,793 |
| The Life of Martin Luther King Jr. | 0 | - | 4.80 | 10,425 |
| Hawaiian Islands | 0 | - | 4.85 | 38,765 |
| Hawaiian Islands Map Quiz | 0 | - | 4.88 | 21,197 |
| Countries Closest to Maine | 0 | - | 4.86 | 59,664 |
| History of Texas | 0 | - | 4.41 | 13,568 |
| LeBron... or Kobe? | 0 | - | 4.10 | 54,625 |
| U.S. States that Border Tennessee | 0 | - | 4.84 | 58,014 |
| American History Quotes #1 | 0 | - | 4.40 | 91,856 |
| People on Money - United States | 0 | - | 4.31 | 61,924 |
| American History Quotes #2 | 0 | - | 4.38 | 39,401 |
| Old West History | 0 | - | 4.28 | 14,815 |
| U.S. History Groups of Two | 0 | - | 4.28 | 35,581 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.17 | 41,562 |
| Life of Benjamin Franklin | 0 | - | 4.20 | 6,243 |
| American Revolution - Multiple Choice | 0 | - | 4.32 | 18,926 |
| Last Names in U.S. History #1 | 0 | - | 4.24 | 34,398 |
| Last Names in U.S. History #2 | 0 | - | 4.42 | 16,132 |
| Fifty US States in One Minute | 0 | - | 4.57 | 3,276,018 |
| U.S. State Flags | 0 | - | 4.88 | 139,353 |
| U.S. States that Border Canada | 0 | - | 4.90 | 166,618 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 186,836 |
| Category Elimination - U.S. States #1 | 0 | - | 4.90 | 196,901 |
| Great Plains States and Provinces on a Map | 0 | - | 4.94 | 38,887 |
| Cartoon Versions of U.S. States | 0 | - | 4.82 | 52,877 |
| Top 10 Coldest U.S. States | 0 | - | 4.91 | 101,360 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 101,877 |
| Top 10 Most Native American U.S. States | 0 | - | 4.84 | 72,188 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 57,372 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.82 | 91,410 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 52,377 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 149,388 |
| Random European Countries on a Map | 0 | - | 4.98 | 262,108 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 77,947 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 58,740 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.92 | 100,417 |
| Biggest Roman Empire Countries | 0 | - | 4.88 | 82,716 |
| U.S. History Multiple Choice #5 | 0 | - | 4.36 | 10,548 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 112,999 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 67,216 |
| Biggest British Empire Countries | 0 | - | 4.70 | 80,286 |
