| U.S. Presidents Quiz | 0 | - | 5.00 | 3,580,095 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 186,557 |
| Shortest U.S. Presidential Terms | 0 | - | 4.81 | 12,106 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 106,341 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.57 | 91,536 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 51,542 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 91,754 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 37,529 |
| U.S. Presidents Who Died in Office | 0 | - | 4.78 | 34,261 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 68,252 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 375,529 |
| U.S. Vice Presidents | 0 | - | 4.40 | 132,521 |
| Governors Who Ran For President | 0 | - | 4.47 | 19,981 |
| U.S. Presidents by Event | 0 | - | 4.58 | 31,612 |
| First Ladies of the United States | 0 | - | 4.29 | 84,110 |
| Presidential Middle Names | 0 | - | 4.40 | 58,917 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 25,913 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 74,946 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.63 | 15,681 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,592 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,605 |
| U.S. Presidents by Picture | 0 | - | 4.86 | 418,761 |
| People in Pictures with Barack Obama | 0 | - | 4.09 | 47,339 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,144 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,128 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,537 |
| Random U.S. Vice President to President | 0 | - | 4.38 | 30,167 |
| The John Adams Presidency | 0 | - | 4.12 | 8,566 |
| The Theodore Roosevelt Presidency | 0 | - | 4.38 | 7,599 |
| U.S. Vice Presidential Trivia | 0 | - | 4.25 | 12,607 |
| Play-Doh Presidents | 0 | - | 5.00 | 80,688 |
| The George Washington Presidency | 0 | - | 4.03 | 14,337 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,737 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,014 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,450 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 299,862 |
| Vietnam War Countries | 0 | - | 4.81 | 92,432 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,107 |
| U.S. President Scramble | 0 | - | 4.39 | 114,695 |
| U.S. Presidents True or False | 0 | - | 3.94 | 15,411 |
| The Kennedy Family | 0 | - | 3.90 | 13,916 |
| U.S. Senators by State | 0 | - | 4.46 | 39,277 |
| U.S. Presidential Quotes | 0 | - | 4.36 | 44,093 |
| The George W. Bush Presidency | 0 | - | 4.06 | 31,882 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,089 |
| The American Revolution | 0 | - | 4.52 | 53,707 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 186,676 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 127,455 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.83 | 54,908 |
| Win the U.S. Presidential Election | 0 | - | 4.77 | 601,259 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 18,851 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.71 | 19,858 |
| People in Pictures with Ronald Reagan | 0 | - | 4.34 | 40,061 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 22,721 |
| United States Map Quiz | 0 | - | 4.98 | 4,111,867 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.18 | 32,902 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 65,039 |
| The Barack Obama Presidency | 0 | - | 4.16 | 24,986 |
| Harvard University | 0 | - | 4.15 | 8,176 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 86,095 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 104,447 |
| The Iraq War | 0 | - | 4.46 | 15,350 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 112,720 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 34,453 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 74,273 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 79,894 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 74,180 |
| Presidential Actors | 0 | - | 4.36 | 18,898 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,166 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,276 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,539 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,737 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 64,586 |
| U.S. States Closest to Moscow | 0 | - | 4.49 | 47,273 |
| Countries of the Soviet Union | 0 | - | 4.98 | 192,459 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 79,253 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 103,980 |
| U.S. State Border Crossings | 0 | - | 4.97 | 94,332 |
| U.S. National Parks Quiz | 0 | - | 4.83 | 53,366 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 235,701 |
| Total United States Immigration by Country | 0 | - | 4.90 | 108,155 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 73,156 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 170,741 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 233,501 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 71,726 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 71,529 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 63,895 |
| US States Quiz | 0 | - | 5.00 | 16,376,600 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 361,610 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 146,388 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 73,392 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 61,068 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 68,312 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 54,533 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 140,602 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 112,811 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 113,775 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 86,903 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 79,743 |
| 10 Longest Rivers in the United States | 0 | - | 4.84 | 38,181 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.96 | 320,355 |
| Pixelated United States Map | 0 | - | 4.90 | 91,688 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 105,778 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 88,838 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 143,339 |
| Countries that Beat the United States | 0 | - | 4.93 | 162,290 |
| All U.S. Supreme Court Justices | 0 | - | 4.52 | 28,589 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.46 | 11,461 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,104 |
| American Revolution Decoder | 0 | - | 4.10 | 20,736 |
| California A-Z | 0 | - | 4.49 | 28,573 |
| Las Vegas Casinos Quiz | 0 | - | 4.10 | 37,792 |
| Six Flags Over Texas | 0 | - | 4.79 | 62,280 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.89 | 26,584 |
| U.S. History for Dummies | 0 | - | 4.47 | 81,392 |
| The Most Recent... United States | 0 | - | 4.45 | 17,929 |
| The American Civil War | 0 | - | 4.61 | 51,617 |
| U.S. Civil War Decoder | 0 | - | 4.18 | 24,999 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 114,776 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 491,862 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 108,283 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 110,399 |
| U.S. States with Short Names | 0 | - | 4.91 | 145,183 |
| U.S. States that Start with M | 0 | - | 4.93 | 183,385 |
| U.S. States By Population | 0 | - | 4.90 | 139,696 |
| U.S. States that Start with N | 0 | - | 4.95 | 167,902 |
| U.S. States with Longest Names | 0 | - | 4.84 | 42,665 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 45,690 |
| US States with an Empty Map | 0 | - | 5.00 | 609,002 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 80,783 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 85,994 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 62,826 |
| Draw All US State Borders | 0 | - | 4.99 | 126,576 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 63,563 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.94 | 156,934 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 175,750 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 122,817 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.84 | 68,222 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 84,616 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 99,047 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 80,419 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 65,504 |
| Merged U.S. States | 0 | - | 4.36 | 43,365 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 91,768 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 129,111 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 162,766 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 100,405 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.97 | 52,068 |
| Least Irish U.S. States | 0 | - | 4.47 | 17,985 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 58,959 |
| Countries of Iberia in History with a Map | 0 | - | 4.89 | 39,931 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 84,008 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 96,618 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 234,172 |
| Vatican City Country Quiz | 0 | - | 4.52 | 43,289 |
| Most-Visited Countries by Popes | 0 | - | 4.55 | 82,142 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 68,004 |
| The Persian Gulf War | 0 | - | 4.02 | 8,278 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 71,516 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 93,381 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.85 | 53,265 |
| South America Flags Map Quiz | 0 | - | 4.95 | 84,132 |
| Rivers of the United States | 0 | - | 4.92 | 64,107 |
| Countries Closest to United States A-Z | 0 | - | 4.84 | 115,827 |
| Countries Closest to Alaska | 0 | - | 4.93 | 121,325 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.23 | 45,479 |
| History of Florida | 0 | - | 4.45 | 9,653 |
| Hawaiian Islands | 0 | - | 4.83 | 41,806 |
| Countries Closest to Maine | 0 | - | 4.84 | 65,124 |
| New York Yankees Trivia | 0 | - | 4.29 | 6,983 |
| History of Texas | 0 | - | 4.43 | 14,411 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 64,598 |
| American History Quotes #1 | 0 | - | 4.36 | 95,089 |
| People on Money - United States | 0 | - | 4.30 | 63,008 |
| American History Quotes #2 | 0 | - | 4.38 | 40,902 |
| U.S. History Groups of Two | 0 | - | 4.23 | 43,858 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.21 | 44,220 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,767 |
| U.S. History Multiple Choice #3 | 0 | - | 4.42 | 24,460 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 35,786 |
| U.S. State Flags | 0 | - | 4.88 | 161,595 |
| U.S. States that Border Canada | 0 | - | 4.91 | 176,622 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 31,811 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 203,337 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 46,884 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 121,628 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 122,589 |
| Top 10 Most Native American U.S. States | 0 | - | 4.86 | 88,993 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 60,794 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 56,777 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 158,549 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 56,541 |
| Biggest Roman Empire Countries | 0 | - | 4.89 | 100,259 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 483,146 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 80,251 |
| U.S. States Closest to Tokyo | 0 | - | 4.88 | 57,542 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 53,098 |
| Random American Countries on a Map | 0 | - | 4.96 | 96,609 |
| Most-Spoken Languages of the United States | 0 | - | 4.51 | 210,031 |
| Territories of the United States | 0 | - | 4.78 | 51,616 |
