| U.S. Presidents Quiz | 0 | - | 5.00 | 3,687,933 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,504 |
| The American Civil War | 0 | - | 4.62 | 52,369 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,431 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,979 |
| Hawaiian Islands | 0 | - | 4.83 | 42,651 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,269 |
| U.S. State Flags | 0 | - | 4.89 | 169,712 |
| Which City in Canada? | 0 | - | 4.82 | 56,942 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,183 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,922 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,743 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,520 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,242 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,584 |
| Presidential Middle Names | 0 | - | 4.41 | 60,099 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,177 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,432 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,352 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,406 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,867 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,534 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,936 |
| American History Quotes #1 | 0 | - | 4.37 | 95,957 |
| American History Quotes #2 | 0 | - | 4.38 | 41,370 |
| United States Map Quiz | 0 | - | 4.98 | 4,153,859 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 625,280 |
| The Vietnam War | 0 | - | 4.44 | 35,480 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,836 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,047 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,241 |
| First Ladies of the United States | 0 | - | 4.28 | 85,534 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,200 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,075 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,925 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,157 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,934 |
| Valid Answer - U.S. History | 0 | - | 4.24 | 22,511 |
| U.S. States that Border Canada | 0 | - | 4.91 | 184,331 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,795 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,182 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,276 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,930 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,357 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,163 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,652 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,320 |
| Names of Generations | 0 | - | 4.10 | 44,134 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,038 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,425 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,217 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,133 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,332 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,149 |
| American Founding Fathers | 0 | - | 4.42 | 23,200 |
| California... or Florida? | 0 | - | 4.60 | 51,275 |
| Georgia Counties | 0 | - | 4.50 | 49,401 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,732 |
| New York Counties | 0 | - | 4.65 | 50,420 |
| Texas Counties | 0 | - | 4.55 | 76,612 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,816 |
| North Carolina Counties | 0 | - | 4.54 | 53,112 |
| Ohio Counties | 0 | - | 4.47 | 45,744 |
| Pennsylvania Counties | 0 | - | 4.49 | 52,598 |
| Virginia Counties | 0 | - | 4.45 | 33,195 |
| West Virginia Counties | 0 | - | 4.63 | 33,725 |
| People on Money - United States | 0 | - | 4.31 | 63,320 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,988 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,214 |
| US States Quiz | 0 | - | 5.00 | 16,830,666 |
| Major U.S. Rivers with State Names | 0 | - | 4.49 | 39,518 |
| Satellite Images - U.S. States | 0 | - | 4.53 | 45,103 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,388 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 41,914 |
| Cartoon Versions of U.S. States | 0 | - | 4.77 | 63,809 |
| Random Point on Land to US State | 0 | - | 4.61 | 69,088 |
| U.S. States by Nickname | 0 | - | 4.57 | 69,480 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,793 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,878 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 76,119 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,279 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,698 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,600 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,038 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,607 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,079 |
| Name a Valid African Country | 0 | - | 4.98 | 153,753 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,460 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,784 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,314 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,195 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 331,046 |
| Cities by Wikipedia Descriptions #2 | 0 | - | 4.53 | 39,012 |
| U.S. Cities by Wikipedia Descriptions | 0 | - | 4.48 | 34,148 |
| American Monopoly Board - Map Quiz | 0 | - | 4.52 | 21,193 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,042 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,797 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,600 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,714 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,616 |
| The John Adams Presidency | 0 | - | 4.12 | 8,733 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,727 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,835 |
| California Counties Map Quiz | 0 | - | 4.36 | 34,438 |
| Harvard University | 0 | - | 4.15 | 8,290 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,073 |
| Events in U.S. History | 0 | - | 4.40 | 28,621 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,579 |
| Smaller U.S. Cities You May Know #1 | 0 | - | 4.45 | 19,687 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,593 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,273 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,665 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 259,931 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,331 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,711 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,225 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,708 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,691 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,508 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,757 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,145 |
| Which City in Latin America? | 0 | - | 4.63 | 46,982 |
| Puerto Rico Trivia | 0 | - | 4.51 | 11,987 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,100 |
| Pixelated United States Map | 0 | - | 4.87 | 94,067 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,339 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,507 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,133 |
| Which City in the United States? | 0 | - | 4.21 | 56,911 |
| 75 Americans Named John | 0 | - | 4.41 | 23,889 |
| The George Washington Presidency | 0 | - | 4.03 | 14,535 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,917 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,657 |
| Star-Spangled Banner Lyrics | 0 | - | 4.36 | 179,193 |
| California Counties | 0 | - | 4.39 | 118,885 |
| Colorado Counties | 0 | - | 4.45 | 26,617 |
| Florida Counties | 0 | - | 4.39 | 48,468 |
| State Quiz - Hawaii | 0 | - | 4.35 | 65,235 |
| Illinois Counties | 0 | - | 4.56 | 30,337 |
| Indiana Counties | 0 | - | 4.46 | 28,859 |
| Michigan Counties | 0 | - | 4.63 | 30,263 |
| U.S. States that Border Missouri | 0 | - | 4.55 | 12,793 |
| Las Vegas Casinos | 0 | - | 4.12 | 38,034 |
| New Jersey Counties | 0 | - | 4.57 | 30,225 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,271 |
| Washington Counties | 0 | - | 4.77 | 26,797 |
| Wisconsin Counties | 0 | - | 4.51 | 26,857 |
| U.S. History A-Z #1 | 0 | - | 4.36 | 29,944 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,089 |
| Animals in American History | 0 | - | 4.20 | 27,996 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,591 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,635 |
| U.S. States by Clue #1 | 0 | - | 4.51 | 38,980 |
| U.S. States Bordering the Great Lakes | 0 | - | 4.54 | 18,234 |
| Top 10 Most Jewish U.S. States | 0 | - | 4.31 | 42,910 |
| States and Provinces that Touch the Great Lakes | 0 | - | 4.54 | 28,885 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,158 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,199 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,684 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,957 |
| U.S. States By Population | 0 | - | 4.92 | 152,999 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,184 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,313 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,378 |
| US States with an Empty Map | 0 | - | 5.00 | 623,229 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,374 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,185 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,121 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,100 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,457 |
| TV Shows by U.S. State | 0 | - | 4.33 | 47,412 |
| U.S. States by Alternate Nicknames | 0 | - | 4.24 | 42,895 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 23,006 |
| U.S. National Parks by State - Multiple Choice | 0 | - | 4.46 | 19,247 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,768 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,506 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,041 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,422 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,110 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,595 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,335 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,369 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,286 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,719 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,887 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,775 |
| Which City in Europe? | 0 | - | 4.83 | 107,155 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,156 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,457 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,715 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,475 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,060 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,906 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,427 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,917 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,142 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,094 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,366 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,172 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,240 |
