| U.S. Presidents Quiz | 0 | - | 5.00 | 3,650,190 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,408 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,403 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 192,437 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,668 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,246 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,640 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,875 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,765 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,937 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,338 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,686 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,458 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,717 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,391 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,101 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,454 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,008 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,989 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,678 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,796 |
| U.S. President Scramble | 0 | - | 4.40 | 116,148 |
| First Ladies of the United States | 0 | - | 4.28 | 85,211 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,474 |
| Presidential Middle Names | 0 | - | 4.41 | 59,651 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,676 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,352 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 65,773 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,429 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,344 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,149 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,711 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,241 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,808 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,916 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,410 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,158 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,022 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,455 |
| Presidential Actors | 0 | - | 4.36 | 19,050 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,198 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,653 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,603 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,863 |
| The John Adams Presidency | 0 | - | 4.12 | 8,673 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,077 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,223 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,102 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,233 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,249 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,079 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,487 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,956 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,524 |
| The George Washington Presidency | 0 | - | 4.03 | 14,469 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,177 |
| The Kennedy Family | 0 | - | 3.90 | 14,021 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 87,954 |
| US States Quiz | 0 | - | 5.00 | 16,685,161 |
| US States with an Empty Map | 0 | - | 5.00 | 618,334 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,386 |
| Random U.S. States on a Map | 0 | - | 4.96 | 620,987 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,135 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,512 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,812 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,299 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,732 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,160 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,872 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,666 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,575 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,800 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,763 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 71,974 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 74,877 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 80,830 |
| U.S. Senators by State | 0 | - | 4.44 | 39,737 |
| Hottest U.S. State Capitals | 0 | - | 4.77 | 29,044 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,224 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,676,558 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,678 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,296 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,045 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,128 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 172,131 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,805 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,175 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,073 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,252 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,825 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,623 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,589 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,016 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,579 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,727 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,812 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,494 |
| Name the English Monarchs | 0 | - | 4.92 | 497,542 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,233 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,602 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,391 |
| Vietnam War Countries | 0 | - | 4.83 | 93,551 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,194 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 83,954 |
| The American Revolution | 0 | - | 4.52 | 54,040 |
| The American Civil War | 0 | - | 4.62 | 52,107 |
| Six Flags Over Texas | 0 | - | 4.79 | 62,981 |
| Canadian Prime Ministers | 0 | - | 4.63 | 56,991 |
| Biggest Cities in the Confederate States in 1860 | 0 | - | 4.41 | 23,543 |
| History of Texas | 0 | - | 4.43 | 14,547 |
| Harvard University | 0 | - | 4.15 | 8,258 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,718 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,494 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,062 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,366 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,564 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,778 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,542 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,482 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,277 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,624 |
| North America Map Quiz | 0 | - | 4.98 | 244,117 |
| Central American Countries | 0 | - | 4.98 | 154,944 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,314 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,430 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,349 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,570 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.80 | 101,739 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,421 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,230 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,578 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,455 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,889 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 103,125 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,370 |
| Pixelated United States Map | 0 | - | 4.89 | 93,392 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,640 |
| Random State Capital to U.S. State | 0 | - | 4.83 | 88,121 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,799 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,782 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,887 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,628 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,068 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,041 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,855 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,763 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,610 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,562 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,630 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,388 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,160 |
| Name a Valid U.S. State Capital #1 | 0 | - | 4.75 | 54,313 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,839 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,397 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,238 |
| Name that Greek Letter | 0 | - | 4.94 | 321,481 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,115 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,292 |
| Countries in World War I | 0 | - | 4.88 | 226,497 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,749 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,397 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,825 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,244 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,275 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,827 |
| People on Money - United States | 0 | - | 4.31 | 63,199 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 78,886 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 59,904 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,706 |
| The Vietnam War | 0 | - | 4.43 | 35,280 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,572 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,176 |
| American Revolution Decoder | 0 | - | 4.10 | 20,872 |
| U.S. History A-Z #1 | 0 | - | 4.39 | 29,246 |
| History of New York | 0 | - | 4.36 | 16,277 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,174 |
| History of California | 0 | - | 4.40 | 18,690 |
| History of Illinois | 0 | - | 4.24 | 11,172 |
| History of Florida | 0 | - | 4.45 | 9,758 |
| History of Massachusetts | 0 | - | 4.14 | 8,322 |
| History of Tennessee | 0 | - | 4.29 | 7,628 |
| History of Ohio | 0 | - | 4.14 | 7,305 |
| History of Washington State | 0 | - | 4.27 | 6,835 |
| History of New Jersey | 0 | - | 4.38 | 7,202 |
| History of Michigan | 0 | - | 4.26 | 6,901 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 491,240 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 389,444 |
| Groups of Things - Harry Potter | 0 | - | 4.82 | 280,000 |
| EU Countries Quiz | 0 | - | 4.99 | 269,587 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,049 |
| NATO Countries | 0 | - | 4.98 | 275,300 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,298 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,815 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,185 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,134 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 137,619 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,334 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,025 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,055 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 66,156 |
