| U.S. Presidents Quiz | 0 | - | 5.00 | 3,648,290 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,585 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,716 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,836 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,342 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,901 |
| Presidential Middle Names | 0 | - | 4.41 | 59,632 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,657 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,733 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,144 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,703 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,310 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,325 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,155 |
| First Ladies of the United States | 0 | - | 4.28 | 85,192 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,098 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,179 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,979 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,815 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,668 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,807 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,230 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,668 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,556 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,442 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,653 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,428 |
| The John Adams Presidency | 0 | - | 4.12 | 8,673 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,678 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,762 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,592 |
| The George Washington Presidency | 0 | - | 4.03 | 14,469 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,861 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,195 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,601 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,156 |
| Vietnam War Countries | 0 | - | 4.83 | 93,530 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,202 |
| U.S. President Scramble | 0 | - | 4.40 | 116,135 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,522 |
| The Kennedy Family | 0 | - | 3.90 | 14,020 |
| U.S. Senators by State | 0 | - | 4.44 | 39,717 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,346 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,078 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,443 |
| The American Revolution | 0 | - | 4.52 | 54,031 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,114 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,615 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,563 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 617,338 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,020 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,955 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,420 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 22,991 |
| United States Map Quiz | 0 | - | 4.98 | 4,139,514 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,328 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 65,761 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,240 |
| Harvard University | 0 | - | 4.15 | 8,257 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 87,916 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,260 |
| The Iraq War | 0 | - | 4.47 | 15,538 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,337 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 34,864 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,046 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 80,800 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 74,861 |
| Presidential Actors | 0 | - | 4.36 | 19,046 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,340 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,407 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,710 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,915 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,157 |
| U.S. States Closest to Moscow | 0 | - | 4.50 | 47,747 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,688 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,178 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,700 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,830 |
| Name the U.S. National Parks | 0 | - | 4.85 | 57,394 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,144 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,506 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,744 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,022 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 239,934 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,476 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 72,965 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,519 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,425 |
| US States Quiz | 0 | - | 5.00 | 16,677,783 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,041 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,753 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,289 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,231 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 69,981 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,899 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 142,989 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,665 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,097 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,603 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,759 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,511 |
| Pixelated United States Map | 0 | - | 4.89 | 93,284 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,269 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,705 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,262 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,375 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,868 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,660 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,176 |
| American Revolution Decoder | 0 | - | 4.10 | 20,872 |
| California A-Z | 0 | - | 4.49 | 28,697 |
| Las Vegas Casinos | 0 | - | 4.12 | 37,953 |
| Six Flags Over Texas | 0 | - | 4.79 | 62,964 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,402 |
| The Most Recent... United States | 0 | - | 4.45 | 18,259 |
| The American Civil War | 0 | - | 4.62 | 52,099 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,171 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,565 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,152 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,198 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,259 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,471 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,744 |
| U.S. States By Population | 0 | - | 4.92 | 152,245 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,238 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,770 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,444 |
| US States with an Empty Map | 0 | - | 5.00 | 618,071 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,832 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,440 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,701 |
| Draw All US State Borders | 0 | - | 4.99 | 133,131 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,779 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,767 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,026 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,389 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,019 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,605 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 100,957 |
| U.S. States with the Most Immigrants | 0 | - | 4.84 | 81,855 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,728 |
| Merged U.S. States | 0 | - | 4.36 | 43,822 |
| Draw All US State Borders - Extreme | 0 | - | 4.99 | 77,375 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,528 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,778 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,354 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,401 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 53,368 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,207 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,276 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,061 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,390 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,743 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,064 |
| Vatican City Country Quiz | 0 | - | 4.53 | 43,958 |
| Most-Visited Countries by Popes | 0 | - | 4.55 | 83,083 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,125 |
| The Persian Gulf War | 0 | - | 4.02 | 8,395 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,195 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,607 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,184 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,320 |
| South America Flags Map Quiz | 0 | - | 4.95 | 86,343 |
| Rivers of the United States | 0 | - | 4.93 | 65,423 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,304 |
| American Founding Fathers | 0 | - | 4.41 | 23,061 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,181 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,434 |
| History of Florida | 0 | - | 4.45 | 9,757 |
| Hawaiian Islands | 0 | - | 4.83 | 42,395 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,360 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,102 |
| History of Texas | 0 | - | 4.43 | 14,546 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,061 |
| American History Quotes #1 | 0 | - | 4.37 | 95,651 |
| People on Money - United States | 0 | - | 4.31 | 63,196 |
| American History Quotes #2 | 0 | - | 4.38 | 41,212 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,214 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,696 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,974 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,633 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,060 |
| U.S. State Flags | 0 | - | 4.89 | 166,668 |
| U.S. States that Border Canada | 0 | - | 4.91 | 181,843 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,201 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,426 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,457 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,775 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,549 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 90,931 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,505 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,589 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,350 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,451 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,297 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 491,158 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 81,673 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,887 |
| Random American Countries on a Map | 0 | - | 4.96 | 98,515 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,277 |
