| U.S. Presidents Quiz | 0 | - | 5.00 | 3,720,648 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,619 |
| The American Civil War | 0 | - | 4.62 | 52,599 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,384 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,590 |
| Hawaiian Islands | 0 | - | 4.83 | 42,892 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,475 |
| U.S. State Flags | 0 | - | 4.89 | 172,348 |
| Which City in Canada? | 0 | - | 4.83 | 57,304 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,358 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,350 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,582 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,250 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,173 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,514 |
| Presidential Middle Names | 0 | - | 4.41 | 60,651 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,591 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,851 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,594 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,570 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,232 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,428 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,169 |
| American History Quotes #1 | 0 | - | 4.37 | 96,174 |
| American History Quotes #2 | 0 | - | 4.38 | 41,489 |
| United States Map Quiz | 0 | - | 4.98 | 4,168,711 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 634,241 |
| The Vietnam War | 0 | - | 4.44 | 35,630 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,109 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,845 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,346 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,741 |
| First Ladies of the United States | 0 | - | 4.28 | 85,904 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,293 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,286 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,411 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,335 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,076 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.30 | 55,052 |
| Events in U.S. History | 0 | - | 4.41 | 28,792 |
| Valid Answer - U.S. History | 0 | - | 4.24 | 22,590 |
| U.S. States that Border Canada | 0 | - | 4.91 | 186,341 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,927 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,334,191 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,553 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,802 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,670 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,937 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,848 |
| Names of Generations | 0 | - | 4.09 | 45,433 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,234 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,751 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,609 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,394 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,494 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,779 |
| American Founding Fathers | 0 | - | 4.42 | 23,267 |
| California... or Florida? | 0 | - | 4.60 | 51,783 |
| Georgia Counties | 0 | - | 4.52 | 49,913 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,855 |
| New York Counties | 0 | - | 4.65 | 51,023 |
| Texas Counties | 0 | - | 4.56 | 77,721 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,203 |
| North Carolina Counties | 0 | - | 4.54 | 53,586 |
| Ohio Counties | 0 | - | 4.48 | 46,072 |
| Pennsylvania Counties | 0 | - | 4.50 | 53,253 |
| Virginia Counties | 0 | - | 4.45 | 33,424 |
| West Virginia Counties | 0 | - | 4.63 | 33,972 |
| People on Money - United States | 0 | - | 4.31 | 63,416 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,184 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,322 |
| US States Quiz | 0 | - | 5.00 | 16,970,839 |
| States and Provinces that Touch the Great Lakes | 0 | - | 4.55 | 33,205 |
| Major U.S. Rivers with State Names | 0 | - | 4.49 | 39,790 |
| Satellite Images - U.S. States | 0 | - | 4.54 | 45,319 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,535 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 42,128 |
| Cartoon Versions of U.S. States | 0 | - | 4.75 | 64,112 |
| Random Point on Land to US State | 0 | - | 4.63 | 69,644 |
| U.S. States by Nickname | 0 | - | 4.57 | 69,695 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,160 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,158 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,924 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,583 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,692 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,446 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,957 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,522 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,690 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,387 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,225 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,976 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,815 |
| Cities by Wikipedia Descriptions #2 | 0 | - | 4.53 | 39,121 |
| U.S. Cities by Wikipedia Descriptions | 0 | - | 4.48 | 34,270 |
| American Monopoly Board - Map Quiz | 0 | - | 4.52 | 21,253 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,376 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,059 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,769 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,741 |
| The John Adams Presidency | 0 | - | 4.12 | 8,778 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,769 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,911 |
| California Counties Map Quiz | 0 | - | 4.36 | 34,608 |
| Harvard University | 0 | - | 4.15 | 8,320 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,629 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,384 |
| Smaller U.S. Cities You May Know #1 | 0 | - | 4.45 | 19,761 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,309 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,585 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,555 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 264,000 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,690 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,670 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,543 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,934 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,866 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,506 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,641 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,379 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,011 |
| Name a Valid African Country | 0 | - | 4.98 | 154,868 |
| Which City in Latin America? | 0 | - | 4.63 | 47,134 |
| Puerto Rico Trivia | 0 | - | 4.52 | 12,057 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,353 |
| Pixelated United States Map | 0 | - | 4.88 | 94,706 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,361 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,312 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,046 |
| Which City in the United States? | 0 | - | 4.21 | 57,148 |
| 75 Americans Named John | 0 | - | 4.41 | 23,960 |
| The George Washington Presidency | 0 | - | 4.03 | 14,595 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,976 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,748 |
| Star-Spangled Banner Lyrics | 0 | - | 4.36 | 179,812 |
| California Counties | 0 | - | 4.39 | 120,076 |
| Colorado Counties | 0 | - | 4.45 | 26,893 |
| Florida Counties | 0 | - | 4.39 | 48,982 |
| State Quiz - Hawaii | 0 | - | 4.35 | 65,566 |
| Illinois Counties | 0 | - | 4.56 | 30,574 |
| Indiana Counties | 0 | - | 4.46 | 29,132 |
| Michigan Counties | 0 | - | 4.63 | 30,745 |
| U.S. States that Border Missouri | 0 | - | 4.55 | 12,858 |
| Las Vegas Casinos | 0 | - | 4.13 | 38,130 |
| New Jersey Counties | 0 | - | 4.57 | 30,548 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,567 |
| Washington Counties | 0 | - | 4.78 | 27,076 |
| Wisconsin Counties | 0 | - | 4.51 | 27,202 |
| U.S. History A-Z #1 | 0 | - | 4.36 | 30,459 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,180 |
| Animals in American History | 0 | - | 4.20 | 28,093 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,681 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,898 |
| U.S. States by Clue #1 | 0 | - | 4.51 | 39,352 |
| U.S. States Bordering the Great Lakes | 0 | - | 4.55 | 18,295 |
| Top 10 Most Jewish U.S. States | 0 | - | 4.31 | 43,116 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 112,125 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,126 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,156 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,151 |
| U.S. States By Population | 0 | - | 4.92 | 154,031 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,076 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,802 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,159 |
| US States with an Empty Map | 0 | - | 5.00 | 627,789 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,977 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,416 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,771 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,482 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,001 |
| TV Shows by U.S. State | 0 | - | 4.33 | 47,529 |
| U.S. States by Alternate Nicknames | 0 | - | 4.24 | 42,974 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 23,115 |
| U.S. National Parks by State - Multiple Choice | 0 | - | 4.46 | 19,334 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,552 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,117 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,595 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,779 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,593 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,338 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,956 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,927 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,869 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,863 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,983 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,875 |
| Which City in Europe? | 0 | - | 4.83 | 107,796 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,318 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,448 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,027 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,508 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,615 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,474 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,559 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,766 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,767 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,978 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,107 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,295 |
| Topological Map of Asia Quiz | 0 | - | 4.82 | 20,384 |
