| U.S. Presidents Quiz | 0 | - | 5.00 | 3,636,498 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,047 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,574 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,024 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.57 | 92,669 |
| Presidential Middle Names | 0 | - | 4.41 | 59,457 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,484 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,505 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,067 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,638 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,132 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 378,714 |
| U.S. Vice Presidents | 0 | - | 4.40 | 134,153 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,134 |
| First Ladies of the United States | 0 | - | 4.28 | 85,078 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,067 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 75,969 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,928 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,777 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,635 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,775 |
| U.S. Presidents by Picture | 0 | - | 4.86 | 422,411 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,608 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,476 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,386 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,626 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,391 |
| The John Adams Presidency | 0 | - | 4.12 | 8,650 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,663 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,734 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,440 |
| The George Washington Presidency | 0 | - | 4.03 | 14,441 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,835 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,159 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,573 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 302,700 |
| Vietnam War Countries | 0 | - | 4.82 | 93,351 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,180 |
| U.S. President Scramble | 0 | - | 4.40 | 115,953 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,510 |
| The Kennedy Family | 0 | - | 3.90 | 14,003 |
| U.S. Senators by State | 0 | - | 4.44 | 39,636 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,298 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,047 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,388 |
| The American Revolution | 0 | - | 4.52 | 53,970 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 188,412 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,438 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,416 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 614,379 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 18,992 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,943 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,360 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 22,936 |
| United States Map Quiz | 0 | - | 4.98 | 4,134,552 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,251 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 65,644 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,189 |
| Harvard University | 0 | - | 4.15 | 8,246 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 87,521 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,145 |
| The Iraq War | 0 | - | 4.47 | 15,494 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,227 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 34,780 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 74,863 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 80,608 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 74,721 |
| Presidential Actors | 0 | - | 4.36 | 19,018 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,306 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,380 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,676 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,874 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 66,674 |
| U.S. States Closest to Moscow | 0 | - | 4.49 | 47,654 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,468 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,018 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,440 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,528 |
| Name the U.S. National Parks | 0 | - | 4.84 | 54,552 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 237,726 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,091 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,408 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 172,626 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 238,829 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,311 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 72,693 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,257 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,265 |
| US States Quiz | 0 | - | 5.00 | 16,627,840 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 364,388 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,337 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 74,946 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 62,857 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 69,661 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,674 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 142,544 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,343 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 115,727 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,440 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,652 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.96 | 326,300 |
| Pixelated United States Map | 0 | - | 4.90 | 93,004 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 107,775 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,357 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 144,926 |
| Countries that Beat the United States | 0 | - | 4.93 | 164,909 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,828 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,630 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,161 |
| American Revolution Decoder | 0 | - | 4.10 | 20,853 |
| California A-Z | 0 | - | 4.49 | 28,664 |
| Las Vegas Casinos | 0 | - | 4.12 | 37,912 |
| Six Flags Over Texas | 0 | - | 4.79 | 62,818 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,228 |
| The Most Recent... United States | 0 | - | 4.45 | 18,208 |
| The American Civil War | 0 | - | 4.62 | 51,951 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,139 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,234 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 499,381 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 109,848 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 111,915 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,085 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,315 |
| U.S. States By Population | 0 | - | 4.92 | 151,957 |
| U.S. States that Start with N | 0 | - | 4.95 | 169,497 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,572 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,160 |
| US States with an Empty Map | 0 | - | 5.00 | 616,497 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,653 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,171 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,541 |
| Draw All US State Borders | 0 | - | 4.99 | 131,910 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,590 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,491 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 176,883 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 123,938 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 68,894 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,456 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 100,635 |
| U.S. States with the Most Immigrants | 0 | - | 4.84 | 81,659 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,515 |
| Merged U.S. States | 0 | - | 4.36 | 43,744 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,083 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,363 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,059 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,030 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 53,166 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,167 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,047 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 40,870 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,153 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,562 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 235,743 |
| Vatican City Country Quiz | 0 | - | 4.53 | 43,826 |
| Most-Visited Countries by Popes | 0 | - | 4.55 | 82,921 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 68,927 |
| The Persian Gulf War | 0 | - | 4.02 | 8,381 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,074 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,266 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,032 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,052 |
| South America Flags Map Quiz | 0 | - | 4.95 | 85,978 |
| Rivers of the United States | 0 | - | 4.93 | 65,054 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 116,944 |
| Countries Closest to Alaska | 0 | - | 4.93 | 122,720 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,308 |
| History of Florida | 0 | - | 4.45 | 9,722 |
| Hawaiian Islands | 0 | - | 4.83 | 42,269 |
| Countries Closest to Maine | 0 | - | 4.83 | 66,055 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,077 |
| History of Texas | 0 | - | 4.43 | 14,519 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 64,947 |
| American History Quotes #1 | 0 | - | 4.37 | 95,576 |
| People on Money - United States | 0 | - | 4.31 | 63,160 |
| American History Quotes #2 | 0 | - | 4.38 | 41,167 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,135 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.21 | 44,594 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,938 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,594 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,005 |
| U.S. State Flags | 0 | - | 4.88 | 165,608 |
| U.S. States that Border Canada | 0 | - | 4.91 | 181,000 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,105 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 205,945 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,170 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,481 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,231 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 90,608 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,397 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,452 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,049 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,316 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,126 |
| Ultimate Harry Potter Name Game | 0 | - | 4.95 | 489,777 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 81,416 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,764 |
| Random American Countries on a Map | 0 | - | 4.96 | 97,968 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 215,264 |
| Territories of the United States | 0 | - | 4.78 | 52,022 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,256 |
