| U.S. Presidents Quiz | 0 | - | 5.00 | 3,128,161 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 164,542 |
| U.S. Vice Presidents | 0 | - | 4.42 | 117,790 |
| U.S. Presidential Trivia #1 | 0 | - | 4.51 | 95,973 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.56 | 80,336 |
| U.S. Presidential Trivia #2 | 0 | - | 4.51 | 39,143 |
| Assassinated U.S. Presidents | 0 | - | 4.54 | 79,332 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 33,380 |
| Name a Valid U.S. President #2 | 0 | - | 4.52 | 51,421 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 350,450 |
| Governors Who Ran For President | 0 | - | 4.46 | 18,819 |
| U.S. Presidents by Event | 0 | - | 4.57 | 28,852 |
| First Ladies of the United States | 0 | - | 4.27 | 79,360 |
| Presidential Middle Names | 0 | - | 4.36 | 55,831 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 24,736 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.31 | 62,370 |
| Random U.S. Vice President to President | 0 | - | 4.57 | 22,983 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.62 | 13,702 |
| Add a Letter - Make a U.S. President | 0 | - | 4.66 | 21,737 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.41 | 22,403 |
| U.S. Presidents Who Died in Office | 0 | - | 4.72 | 30,999 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 391,293 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 44,854 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 25,401 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 12,791 |
| The John Adams Presidency | 0 | - | 4.10 | 7,908 |
| The Theodore Roosevelt Presidency | 0 | - | 4.30 | 7,090 |
| U.S. Vice Presidential Trivia | 0 | - | 4.29 | 11,203 |
| Play-Doh Presidents | 0 | - | 5.00 | 73,697 |
| The George Washington Presidency | 0 | - | 4.02 | 13,561 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.32 | 10,642 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.31 | 16,706 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.32 | 20,394 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.44 | 275,428 |
| U.S. President Scramble | 0 | - | 4.39 | 90,055 |
| U.S. Presidents True or False | 0 | - | 3.94 | 14,529 |
| The Kennedy Family | 0 | - | 3.85 | 13,179 |
| U.S. Senators by State | 0 | - | 4.49 | 35,796 |
| Vietnam War Countries | 0 | - | 4.80 | 85,417 |
| U.S. Presidential Quotes | 0 | - | 4.35 | 42,569 |
| The John F. Kennedy Presidency | 0 | - | 4.45 | 40,731 |
| The American Revolution | 0 | - | 4.55 | 51,431 |
| Deadliest U.S. Wars | 0 | - | 4.82 | 156,676 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 121,901 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.87 | 50,497 |
| Win the U.S. Presidential Election | 0 | - | 4.79 | 496,663 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.75 | 19,203 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 37,232 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.46 | 20,661 |
| Six Flags Over Texas | 0 | - | 4.84 | 58,342 |
| The Iraq War | 0 | - | 4.43 | 14,246 |
| United States Map Quiz | 0 | - | 4.98 | 3,877,780 |
| The George W. Bush Presidency | 0 | - | 4.06 | 30,805 |
| Random U.S. Presidents by Picture | 0 | - | 4.34 | 53,847 |
| The Barack Obama Presidency | 0 | - | 4.20 | 23,442 |
| Harvard University | 0 | - | 4.15 | 7,678 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 67,468 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.93 | 99,164 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 105,972 |
| Rust Belt Cities Map Quiz | 0 | - | 4.56 | 31,878 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.43 | 68,437 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.66 | 73,033 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.52 | 69,473 |
| Presidential Actors | 0 | - | 4.33 | 17,678 |
| The Bill Clinton Presidency | 0 | - | 4.18 | 30,063 |
| The George H. W. Bush Presidency | 0 | - | 4.35 | 20,465 |
| The Ronald Reagan Presidency | 0 | - | 4.25 | 23,505 |
| The Richard Nixon Presidency | 0 | - | 4.10 | 20,710 |
| The Jimmy Carter Presidency | 0 | - | 4.39 | 17,947 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.91 | 47,506 |
| Countries of the Soviet Union | 0 | - | 4.98 | 183,344 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 73,837 |
| Biggest Spanish Empire Countries | 0 | - | 4.90 | 91,717 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 98,115 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.83 | 53,940 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 92,239 |
| U.S. State Border Crossings | 0 | - | 4.96 | 81,351 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 220,321 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.82 | 32,310 |
| Total United States Immigration by Country | 0 | - | 4.89 | 95,740 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 64,525 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 144,849 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.95 | 181,536 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 67,179 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 29,772 |
| Cities and Towns of Massachusetts | 0 | - | 4.89 | 59,041 |
| US States Quiz | 0 | - | 5.00 | 14,543,207 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 337,819 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 132,101 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 61,470 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.94 | 47,887 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 57,581 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 45,629 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.96 | 124,563 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 50,150 |
| Countries of Iberia in History with a Map | 0 | - | 4.81 | 33,255 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 74,530 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 89,389 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 220,708 |
| Vatican City Country Quiz | 0 | - | 4.48 | 38,379 |
| Most-Visited Countries by Popes | 0 | - | 4.70 | 62,162 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 59,762 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 66,716 |
| Countries Bordering China Since 1914 | 0 | - | 4.91 | 87,078 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 76,890 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 66,739 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 34,597 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.95 | 268,789 |
| Pixelated United States Map | 0 | - | 4.91 | 81,133 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 91,762 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 77,379 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 123,114 |
| Countries that Beat the United States | 0 | - | 4.92 | 143,347 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,182 |
| George Bush... or George Bush | 0 | - | 3.89 | 7,681 |
| American Revolution Decoder | 0 | - | 4.12 | 19,902 |
| California A-Z | 0 | - | 4.48 | 27,724 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.84 | 20,949 |
| American History Quotes #1 | 0 | - | 4.43 | 90,994 |
| U.S. History for Dummies | 0 | - | 4.50 | 64,603 |
| The American Civil War | 0 | - | 4.72 | 48,614 |
| U.S. Civil War Decoder | 0 | - | 4.16 | 23,939 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 99,218 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 455,368 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 94,886 |
| 10 Southernmost U.S. States | 0 | - | 4.84 | 97,923 |
| U.S. States with Short Names | 0 | - | 4.87 | 128,069 |
| U.S. States that Start with M | 0 | - | 4.91 | 148,925 |
| U.S. States By Population | 0 | - | 4.90 | 129,063 |
| U.S. States that Start with N | 0 | - | 4.95 | 154,089 |
| U.S. States with Longest Names | 0 | - | 4.84 | 35,380 |
| Louisiana Purchase with a Map | 0 | - | 4.94 | 35,347 |
| US States with an Empty Map | 0 | - | 5.00 | 547,676 |
| 10 Northernmost U.S. States | 0 | - | 4.86 | 59,569 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 76,892 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 57,774 |
| The Only Remaining U.S. State . . . | 0 | - | 4.95 | 52,416 |
| U.S. States with the Longest International Borders | 0 | - | 4.81 | 39,740 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 144,167 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 166,520 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 98,433 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.89 | 88,236 |
| U.S. States with the Most Immigrants | 0 | - | 4.86 | 72,547 |
| Merged U.S. States | 0 | - | 4.38 | 39,973 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 70,165 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 114,706 |
| Countries that Bordered the USSR | 0 | - | 4.94 | 141,341 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 87,344 |
| Biggest Roman Empire Countries | 0 | - | 4.88 | 81,382 |
| Ultimate Harry Potter Name Game | 0 | - | 4.95 | 461,305 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 70,636 |
| South America Flags Map Quiz | 0 | - | 4.95 | 69,166 |
| Rivers of the United States | 0 | - | 4.93 | 48,925 |
| Countries Closest to United States A-Z | 0 | - | 4.86 | 106,122 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.31 | 10,245 |
| Countries Closest to Alaska | 0 | - | 4.92 | 97,844 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.33 | 41,033 |
| History of Florida | 0 | - | 4.44 | 8,663 |
| Florida Pro Sport Teams | 0 | - | 4.86 | 7,091 |
| Hawaiian Islands | 0 | - | 4.85 | 38,200 |
| Hawaiian Islands Map Quiz | 0 | - | 4.88 | 20,860 |
| Countries Closest to Maine | 0 | - | 4.83 | 58,142 |
| New York Yankees Trivia | 0 | - | 4.36 | 5,821 |
| Las Vegas Casinos Quiz | 0 | - | 4.06 | 31,434 |
| History of Texas | 0 | - | 4.41 | 13,407 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 57,580 |
| People on Money - United States | 0 | - | 4.31 | 61,594 |
| American History Quotes #2 | 0 | - | 4.33 | 39,074 |
| U.S. History Groups of Two | 0 | - | 4.27 | 35,082 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.19 | 40,958 |
| Last Names in U.S. History #1 | 0 | - | 4.24 | 34,058 |
| U.S. State Flags | 0 | - | 4.87 | 133,697 |
| U.S. States that Border Canada | 0 | - | 4.90 | 164,756 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 182,226 |
| Great Plains States and Provinces on a Map | 0 | - | 4.94 | 37,073 |
| Cartoon Versions of U.S. States | 0 | - | 4.84 | 50,841 |
| Top 10 Coldest U.S. States | 0 | - | 4.91 | 99,204 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 99,731 |
| Top 10 Most Native American U.S. States | 0 | - | 4.84 | 70,174 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 56,850 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.82 | 90,205 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.93 | 51,437 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 129,862 |
| U.S. History Multiple Choice #5 | 0 | - | 4.34 | 10,251 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 110,157 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 395,813 |
| Groups of Things - Harry Potter | 0 | - | 4.85 | 258,501 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.90 | 30,420 |
| Countries of Asia in 1900 | 0 | - | 4.49 | 52,907 |
| The Persian Gulf War | 0 | - | 3.98 | 7,645 |
| The Vietnam War | 0 | - | 4.41 | 32,518 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 97,626 |
| Colonies of Africa with a Map | 0 | - | 4.80 | 47,812 |
| Random American Countries on a Map | 0 | - | 4.95 | 85,047 |
| Most-Spoken Languages of the United States | 0 | - | 4.45 | 162,646 |
| Territories of the United States | 0 | - | 4.76 | 48,159 |
| Most Mentioned Enemies of the USA | 0 | - | 4.79 | 158,324 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.37 | 7,831 |
| Major non-NATO U.S. Allies | 0 | - | 4.43 | 33,090 |
| Name a Valid Answer - United States #1 | 0 | - | 4.70 | 84,574 |
