| U.S. Presidents Quiz | 0 | - | 5.00 | 3,173,227 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 167,243 |
| U.S. Vice Presidents | 0 | - | 4.42 | 119,619 |
| U.S. Presidential Trivia #1 | 0 | - | 4.51 | 97,006 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.56 | 81,645 |
| U.S. Presidential Trivia #2 | 0 | - | 4.51 | 39,760 |
| Assassinated U.S. Presidents | 0 | - | 4.54 | 80,078 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 33,550 |
| Name a Valid U.S. President #2 | 0 | - | 4.52 | 61,250 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 353,233 |
| Governors Who Ran For President | 0 | - | 4.47 | 18,893 |
| U.S. Presidents by Event | 0 | - | 4.58 | 29,106 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 25,726 |
| First Ladies of the United States | 0 | - | 4.27 | 79,914 |
| Presidential Middle Names | 0 | - | 4.37 | 56,114 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 24,843 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.31 | 64,451 |
| Random U.S. Vice President to President | 0 | - | 4.57 | 23,223 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.63 | 13,905 |
| Add a Letter - Make a U.S. President | 0 | - | 4.66 | 21,922 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.41 | 22,525 |
| U.S. Presidents Who Died in Office | 0 | - | 4.75 | 31,222 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 394,662 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 45,109 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 12,873 |
| The John Adams Presidency | 0 | - | 4.10 | 7,975 |
| The Theodore Roosevelt Presidency | 0 | - | 4.31 | 7,140 |
| U.S. Vice Presidential Trivia | 0 | - | 4.29 | 11,418 |
| Play-Doh Presidents | 0 | - | 5.00 | 74,585 |
| The George Washington Presidency | 0 | - | 4.02 | 13,633 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.33 | 10,693 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.32 | 16,805 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.32 | 20,513 |
| Vietnam War Countries | 0 | - | 4.81 | 86,467 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.44 | 279,094 |
| U.S. President Scramble | 0 | - | 4.37 | 90,875 |
| U.S. Senators by State | 0 | - | 4.49 | 36,159 |
| U.S. Presidents True or False | 0 | - | 3.94 | 14,594 |
| The Kennedy Family | 0 | - | 3.85 | 13,271 |
| U.S. Presidential Quotes | 0 | - | 4.36 | 42,725 |
| The John F. Kennedy Presidency | 0 | - | 4.45 | 40,968 |
| Deadliest U.S. Wars | 0 | - | 4.83 | 158,182 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 122,545 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.85 | 51,037 |
| Win the U.S. Presidential Election | 0 | - | 4.79 | 509,457 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.75 | 19,259 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.46 | 20,881 |
| The American Revolution | 0 | - | 4.51 | 51,701 |
| Six Flags Over Texas | 0 | - | 4.84 | 58,784 |
| United States Map Quiz | 0 | - | 4.98 | 3,903,852 |
| The George W. Bush Presidency | 0 | - | 4.06 | 30,905 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 37,536 |
| The Barack Obama Presidency | 0 | - | 4.17 | 23,592 |
| Harvard University | 0 | - | 4.15 | 7,733 |
| The Iraq War | 0 | - | 4.43 | 14,371 |
| Third Most Common Language by U.S. State | 0 | - | 4.91 | 107,104 |
| Rust Belt Cities Map Quiz | 0 | - | 4.56 | 32,193 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.43 | 69,140 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.70 | 73,812 |
| Presidential Actors | 0 | - | 4.33 | 17,806 |
| Random U.S. Presidents by Picture | 0 | - | 4.37 | 60,026 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.92 | 49,667 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 76,876 |
| Countries of the Soviet Union | 0 | - | 4.98 | 184,922 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 100,024 |
| U.S. State Border Crossings | 0 | - | 4.96 | 82,136 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 222,178 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.83 | 33,309 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 65,345 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.52 | 70,061 |
| The Bill Clinton Presidency | 0 | - | 4.18 | 30,179 |
| The George H. W. Bush Presidency | 0 | - | 4.35 | 20,542 |
| The Ronald Reagan Presidency | 0 | - | 4.25 | 23,617 |
| The Richard Nixon Presidency | 0 | - | 4.10 | 20,827 |
| The Jimmy Carter Presidency | 0 | - | 4.39 | 18,047 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.20 | 30,146 |
| Cities and Towns of Massachusetts | 0 | - | 4.89 | 60,421 |
| US States Quiz | 0 | - | 5.00 | 14,749,654 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 340,249 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 133,779 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 62,876 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.93 | 49,350 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 58,793 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 46,483 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 74,565 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.96 | 126,692 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.88 | 51,103 |
| Biggest Spanish Empire Countries | 0 | - | 4.90 | 93,651 |
| Countries of Iberia in History with a Map | 0 | - | 4.81 | 34,026 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 75,721 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 100,152 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.84 | 54,787 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 67,195 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 93,650 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 67,447 |
| Total United States Immigration by Country | 0 | - | 4.89 | 96,772 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 147,036 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.95 | 185,026 |
| Pixelated United States Map | 0 | - | 4.90 | 82,240 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 93,381 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 78,712 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,328 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 67,624 |
| George Bush... or George Bush | 0 | - | 3.89 | 7,709 |
| Las Vegas Casinos Quiz | 0 | - | 4.10 | 36,059 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.83 | 21,643 |
| U.S. History for Dummies | 0 | - | 4.49 | 65,406 |
| U.S. Civil War Decoder | 0 | - | 4.16 | 24,083 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 100,597 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 96,204 |
| 10 Southernmost U.S. States | 0 | - | 4.84 | 99,267 |
| U.S. States with Short Names | 0 | - | 4.87 | 129,759 |
| U.S. States that Start with M | 0 | - | 4.91 | 150,501 |
| U.S. States By Population | 0 | - | 4.90 | 130,000 |
| U.S. States that Start with N | 0 | - | 4.95 | 155,562 |
| U.S. States with Longest Names | 0 | - | 4.84 | 36,061 |
| 10 Northernmost U.S. States | 0 | - | 4.89 | 73,697 |
| U.S. States with a Unique First Letter | 0 | - | 4.95 | 77,875 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 58,379 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 56,129 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 145,411 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 167,914 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 99,063 |
| Top 10 Newest U.S. States | 0 | - | 4.81 | 68,112 |
| Top 10 Least Obese U.S. States | 0 | - | 4.81 | 68,160 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 90,306 |
| Ultimate Harry Potter Name Game | 0 | - | 4.95 | 463,820 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 222,192 |
| Vatican City Country Quiz | 0 | - | 4.49 | 39,252 |
| Most-Visited Countries by Popes | 0 | - | 4.59 | 75,143 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 60,688 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 71,707 |
| Countries Bordering China Since 1914 | 0 | - | 4.91 | 87,803 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 78,014 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 35,023 |
| Rivers of the United States | 0 | - | 4.91 | 57,007 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.95 | 274,284 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 124,506 |
| Countries that Beat the United States | 0 | - | 4.92 | 145,745 |
| American Revolution Decoder | 0 | - | 4.12 | 20,000 |
| Countries Closest to Alaska | 0 | - | 4.93 | 99,046 |
| California A-Z | 0 | - | 4.48 | 27,825 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.32 | 41,840 |
| Countries Closest to Maine | 0 | - | 4.85 | 58,971 |
| The American Civil War | 0 | - | 4.72 | 49,053 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 459,282 |
| Louisiana Purchase with a Map | 0 | - | 4.95 | 36,223 |
| US States with an Empty Map | 0 | - | 5.00 | 554,325 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 184,854 |
| Great Plains States and Provinces on a Map | 0 | - | 4.94 | 38,053 |
| U.S. States with the Longest International Borders | 0 | - | 4.81 | 40,815 |
| Top 10 Coldest U.S. States | 0 | - | 4.91 | 100,296 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 100,765 |
| Top 10 Most Native American U.S. States | 0 | - | 4.84 | 71,334 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.89 | 89,522 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 73,224 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 57,120 |
| Merged U.S. States | 0 | - | 4.38 | 40,355 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 71,281 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 116,148 |
| Countries that Bordered the USSR | 0 | - | 4.95 | 152,775 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 88,872 |
| Biggest Roman Empire Countries | 0 | - | 4.88 | 82,059 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 399,812 |
| Countries of Asia in 1900 | 0 | - | 4.49 | 53,418 |
| The Persian Gulf War | 0 | - | 3.98 | 7,702 |
| The Vietnam War | 0 | - | 4.41 | 32,832 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 48,380 |
| Random American Countries on a Map | 0 | - | 4.95 | 86,202 |
| South America Flags Map Quiz | 0 | - | 4.95 | 70,923 |
| Most-Spoken Languages of the United States | 0 | - | 4.45 | 163,753 |
| Countries Closest to United States A-Z | 0 | - | 4.84 | 107,433 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.33 | 10,362 |
| History of Florida | 0 | - | 4.44 | 8,724 |
| The Life of Martin Luther King Jr. | 0 | - | 4.79 | 10,360 |
| Hawaiian Islands | 0 | - | 4.85 | 38,496 |
| Hawaiian Islands Map Quiz | 0 | - | 4.88 | 21,020 |
| Boston Red Sox Trivia | 0 | - | 4.12 | 6,757 |
| New York Yankees Trivia | 0 | - | 4.36 | 6,019 |
| History of Texas | 0 | - | 4.41 | 13,487 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 57,837 |
| American History Quotes #1 | 0 | - | 4.40 | 91,408 |
| People on Money - United States | 0 | - | 4.31 | 61,790 |
| American History Quotes #2 | 0 | - | 4.34 | 39,233 |
| Old West History | 0 | - | 4.28 | 14,787 |
| U.S. History Groups of Two | 0 | - | 4.28 | 35,341 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 41,293 |
| Life of Benjamin Franklin | 0 | - | 4.18 | 6,221 |
| American Revolution - Multiple Choice | 0 | - | 4.32 | 18,812 |
| Last Names in U.S. History #1 | 0 | - | 4.24 | 34,257 |
| Last Names in U.S. History #2 | 0 | - | 4.41 | 15,990 |
| Fifty US States in One Minute | 0 | - | 4.55 | 3,246,812 |
| U.S. State Flags | 0 | - | 4.88 | 136,548 |
| U.S. States that Border Canada | 0 | - | 4.90 | 165,882 |
| Category Elimination - U.S. States #1 | 0 | - | 4.90 | 195,039 |
| Cartoon Versions of U.S. States | 0 | - | 4.84 | 52,033 |
| U.S. State Birds Quiz | 0 | - | 4.35 | 20,555 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.82 | 91,010 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 51,986 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 148,033 |
