| First Names of U.S. Presidents | 0 | - | 4.86 | 353,144 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 394,567 |
| Play-Doh Presidents | 0 | - | 5.00 | 74,556 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,171,675 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 167,164 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.44 | 278,978 |
| U.S. President Scramble | 0 | - | 4.37 | 90,847 |
| U.S. Presidential Quotes | 0 | - | 4.36 | 42,720 |
| The John F. Kennedy Presidency | 0 | - | 4.45 | 40,960 |
| Name a Valid U.S. President #2 | 0 | - | 4.52 | 61,224 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.46 | 20,872 |
| U.S. Vice Presidents | 0 | - | 4.42 | 119,571 |
| U.S. Presidential Trivia #1 | 0 | - | 4.51 | 96,976 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.56 | 81,615 |
| The George W. Bush Presidency | 0 | - | 4.06 | 30,903 |
| U.S. Presidential Trivia #2 | 0 | - | 4.51 | 39,734 |
| Assassinated U.S. Presidents | 0 | - | 4.54 | 80,047 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 37,527 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 33,539 |
| The Barack Obama Presidency | 0 | - | 4.17 | 23,588 |
| Random U.S. States on a Map | 0 | - | 4.95 | 491,538 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 218,631 |
| Presidential Actors | 0 | - | 4.33 | 17,801 |
| The Bill Clinton Presidency | 0 | - | 4.18 | 30,174 |
| The George H. W. Bush Presidency | 0 | - | 4.35 | 20,540 |
| The Ronald Reagan Presidency | 0 | - | 4.25 | 23,613 |
| The Richard Nixon Presidency | 0 | - | 4.10 | 20,823 |
| The Jimmy Carter Presidency | 0 | - | 4.39 | 18,041 |
| Governors Who Ran For President | 0 | - | 4.47 | 18,893 |
| U.S. Presidents by Event | 0 | - | 4.58 | 29,100 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 25,715 |
| First Ladies of the United States | 0 | - | 4.27 | 79,901 |
| Presidential Middle Names | 0 | - | 4.37 | 56,106 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 24,841 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.31 | 64,403 |
| Random U.S. Vice President to President | 0 | - | 4.57 | 23,219 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.63 | 13,902 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.97 | 178,315 |
| Add a Letter - Make a U.S. President | 0 | - | 4.66 | 21,915 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 45,105 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.41 | 22,522 |
| U.S. Presidents Who Died in Office | 0 | - | 4.75 | 31,213 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 273,987 |
| George Bush... or George Bush | 0 | - | 3.89 | 7,708 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 12,869 |
| The John Adams Presidency | 0 | - | 4.10 | 7,971 |
| The Theodore Roosevelt Presidency | 0 | - | 4.31 | 7,140 |
| U.S. Vice Presidential Trivia | 0 | - | 4.29 | 11,412 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 122,527 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.75 | 19,256 |
| The George Washington Presidency | 0 | - | 4.02 | 13,630 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.33 | 10,691 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.32 | 16,804 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.32 | 20,509 |
| Random U.S. Presidents by Picture | 0 | - | 4.37 | 59,990 |
| Six Flags Over Texas | 0 | - | 4.84 | 58,774 |
| Deadliest U.S. Wars | 0 | - | 4.83 | 158,123 |
| Ultimate Harry Potter Name Game | 0 | - | 4.95 | 463,745 |
| United States Map Quiz | 0 | - | 4.98 | 3,902,816 |
| U.S. Senators by State | 0 | - | 4.49 | 36,149 |
| Groups of Things - Harry Potter | 0 | - | 4.86 | 260,800 |
| Vatican City Country Quiz | 0 | - | 4.49 | 39,215 |
| Countries of the Soviet Union | 0 | - | 4.98 | 184,875 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 349,269 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 108,006 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 116,416 |
| U.S. State Border Crossings | 0 | - | 4.96 | 82,120 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 222,140 |
| Third Most Common Language by U.S. State | 0 | - | 4.91 | 107,087 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.83 | 33,273 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 65,313 |
| U.S. Presidents True or False | 0 | - | 3.94 | 14,590 |
| The Kennedy Family | 0 | - | 3.85 | 13,268 |
| Cities and Towns of Massachusetts | 0 | - | 4.89 | 60,378 |
| US States Quiz | 0 | - | 5.00 | 14,742,388 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 202,547 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.92 | 49,602 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 133,722 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 62,824 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.93 | 49,307 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 58,758 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 46,454 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 74,537 |
| Biggest Spanish Empire Countries | 0 | - | 4.90 | 93,608 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 100,099 |
| Basic Harry Potter Quiz | 0 | - | 4.55 | 361,307 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.84 | 54,723 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 67,157 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 93,605 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 67,419 |
| Total United States Immigration by Country | 0 | - | 4.89 | 96,707 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 146,943 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.95 | 184,890 |
| Pixelated United States Map | 0 | - | 4.90 | 82,197 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 93,314 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 78,658 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,325 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 67,585 |
| Win the U.S. Presidential Election | 0 | - | 4.79 | 509,052 |
| U.S. History for Dummies | 0 | - | 4.49 | 65,377 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 100,555 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 96,175 |
| 10 Southernmost U.S. States | 0 | - | 4.84 | 99,222 |
| U.S. States with Short Names | 0 | - | 4.87 | 129,711 |
| U.S. States that Start with M | 0 | - | 4.91 | 150,457 |
| U.S. States By Population | 0 | - | 4.90 | 129,980 |
| U.S. States that Start with N | 0 | - | 4.95 | 155,519 |
| U.S. States with Longest Names | 0 | - | 4.84 | 36,041 |
| US States with an Empty Map | 0 | - | 5.00 | 554,104 |
| 10 Northernmost U.S. States | 0 | - | 4.89 | 73,677 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 340,133 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 77,822 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 58,358 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 56,097 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 145,366 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 167,897 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 99,041 |
| Top 10 Newest U.S. States | 0 | - | 4.81 | 68,102 |
| Top 10 Least Obese U.S. States | 0 | - | 4.81 | 68,136 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 90,267 |
| Monty Python Quotes | 0 | - | 4.89 | 40,408 |
| Shakespearean Phrases | 0 | - | 4.55 | 34,034 |
| Word Scramble - Harry Potter Characters | 0 | - | 4.18 | 56,089 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 222,152 |
| Most-Visited Countries by Popes | 0 | - | 4.59 | 73,649 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 60,659 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 71,673 |
| Countries Bordering China Since 1914 | 0 | - | 4.91 | 87,774 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 77,963 |
| Random African Flag to Country | 0 | - | 4.89 | 64,555 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 35,015 |
| Rivers of the United States | 0 | - | 4.91 | 56,981 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.95 | 274,129 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 124,457 |
| Countries that Beat the United States | 0 | - | 4.92 | 145,682 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.43 | 69,121 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.70 | 73,782 |
| American Revolution Decoder | 0 | - | 4.12 | 19,994 |
| Countries Closest to Alaska | 0 | - | 4.93 | 99,009 |
| Hawaiian Islands Map Quiz | 0 | - | 4.88 | 20,996 |
| Countries Closest to Maine | 0 | - | 4.85 | 58,944 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.83 | 21,616 |
| People on Money - United States | 0 | - | 4.31 | 61,780 |
| U.S. History Groups of Two | 0 | - | 4.28 | 35,336 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 41,282 |
| The American Civil War | 0 | - | 4.72 | 49,039 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 459,185 |
| Louisiana Purchase with a Map | 0 | - | 4.95 | 36,174 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 184,801 |
| Great Plains States and Provinces on a Map | 0 | - | 4.94 | 38,020 |
| U.S. States with the Longest International Borders | 0 | - | 4.81 | 40,749 |
| Top 10 Coldest U.S. States | 0 | - | 4.91 | 100,267 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 100,732 |
| Top 10 Most Native American U.S. States | 0 | - | 4.84 | 71,303 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.89 | 89,479 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 73,200 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 57,112 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 71,224 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 116,101 |
| Random European Flag to Country | 0 | - | 4.89 | 161,728 |
| Countries that Bordered the USSR | 0 | - | 4.95 | 152,613 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 88,828 |
| Biggest Roman Empire Countries | 0 | - | 4.88 | 82,031 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 111,585 |
| Harry Potter Last Names | 0 | - | 4.70 | 890,378 |
| Harry Potter: Voldemort's Horcruxes | 0 | - | 4.43 | 105,227 |
| Countries of Asia in 1900 | 0 | - | 4.49 | 53,402 |
| Random Asian Countries on a Map | 0 | - | 4.96 | 151,983 |
| The Vietnam War | 0 | - | 4.41 | 32,828 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 98,479 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 48,361 |
| Random African Countries on a Map | 0 | - | 4.98 | 249,360 |
| Random American Countries on a Map | 0 | - | 4.95 | 86,175 |
| Most-Spoken Languages of the United States | 0 | - | 4.45 | 163,714 |
| Countries Closest to United States A-Z | 0 | - | 4.84 | 107,399 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.33 | 10,361 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.52 | 70,049 |
| The American Revolution | 0 | - | 4.51 | 51,695 |
| Stephen Curry Quiz | 0 | - | 4.34 | 58,927 |
| History of Florida | 0 | - | 4.44 | 8,721 |
| Hawaiian Islands | 0 | - | 4.85 | 38,493 |
| History of Texas | 0 | - | 4.41 | 13,486 |
| LeBron... or Kobe? | 0 | - | 4.15 | 53,490 |
| History of Pennsylvania | 0 | - | 4.09 | 6,436 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 57,831 |
| History of Virginia | 0 | - | 4.33 | 10,939 |
| American History Quotes #1 | 0 | - | 4.40 | 91,391 |
| American History Quotes #2 | 0 | - | 4.34 | 39,225 |
| Old West History | 0 | - | 4.28 | 14,785 |
| Events in U.S. History | 0 | - | 4.39 | 26,114 |
| Life of Benjamin Franklin | 0 | - | 4.18 | 6,221 |
| American Revolution - Multiple Choice | 0 | - | 4.32 | 18,807 |
| Embarrassing Chapters in US History | 0 | - | 4.15 | 31,469 |
| Last Names in U.S. History #1 | 0 | - | 4.24 | 34,253 |
| Last Names in U.S. History #2 | 0 | - | 4.41 | 15,982 |
| Fifty US States in One Minute | 0 | - | 4.55 | 3,245,402 |
| U.S. State Flags | 0 | - | 4.88 | 136,448 |
| U.S. States that Border Canada | 0 | - | 4.90 | 165,860 |
| Category Elimination - U.S. States #1 | 0 | - | 4.90 | 194,953 |
| Cartoon Versions of U.S. States | 0 | - | 4.84 | 52,008 |
