| U.S. Presidents Quiz | 0 | - | 5.00 | 3,650,347 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,417 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,410 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 192,441 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,672 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,256 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,642 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,878 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,766 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,938 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,341 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,686 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,459 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,717 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,393 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,102 |
| 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 | 15,991 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,678 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,802 |
| U.S. President Scramble | 0 | - | 4.40 | 116,153 |
| 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 | 59,655 |
| 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 | 21,411 |
| 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 | 19,051 |
| 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 | 233,084 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,227 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,117 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,241 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,282 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,080 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,489 |
| 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 | 87,961 |
| US States Quiz | 0 | - | 5.00 | 16,685,927 |
| US States with an Empty Map | 0 | - | 5.00 | 618,349 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,397 |
| Random U.S. States on a Map | 0 | - | 4.96 | 620,998 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,139 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,515 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,816 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,306 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,745 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,163 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,873 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,666 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,577 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,802 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,766 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 71,976 |
| 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 | 80,834 |
| 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 | 4,140,292 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,676,587 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,681 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,300 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,045 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,191 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 172,141 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,806 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,178 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,074 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,252 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,828 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,625 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,597 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,017 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,582 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,727 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,815 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,497 |
| Name the English Monarchs | 0 | - | 4.92 | 497,559 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,246 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,606 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,395 |
| Vietnam War Countries | 0 | - | 4.83 | 93,556 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,196 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 83,959 |
| The American Revolution | 0 | - | 4.52 | 54,040 |
| The American Civil War | 0 | - | 4.62 | 52,107 |
| Six Flags Over Texas | 0 | - | 4.79 | 62,982 |
| Canadian Prime Ministers | 0 | - | 4.63 | 56,991 |
| Biggest Cities in the Confederate States in 1860 | 0 | - | 4.41 | 23,546 |
| History of Texas | 0 | - | 4.43 | 14,547 |
| Harvard University | 0 | - | 4.15 | 8,258 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,719 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,496 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,063 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,366 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,576 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,827 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,558 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,497 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,279 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,638 |
| North America Map Quiz | 0 | - | 4.98 | 244,126 |
| Central American Countries | 0 | - | 4.98 | 154,946 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,316 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,438 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,351 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,576 |
| 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 | 123,232 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,578 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,458 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,890 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 103,125 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,374 |
| Pixelated United States Map | 0 | - | 4.89 | 93,398 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,640 |
| Random State Capital to U.S. State | 0 | - | 4.83 | 88,122 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,801 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,785 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,889 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,628 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,069 |
| 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 | 90,771 |
| 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 | 65,564 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,632 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,389 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,168 |
| Name a Valid U.S. State Capital #1 | 0 | - | 4.75 | 54,313 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,840 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,418 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,276 |
| Name that Greek Letter | 0 | - | 4.94 | 321,486 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,117 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,300 |
| Countries in World War I | 0 | - | 4.88 | 226,500 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,755 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,402 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,827 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,247 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,275 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,830 |
| 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 | 35,282 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,574 |
| 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 | 29,253 |
| History of New York | 0 | - | 4.36 | 16,278 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,175 |
| History of California | 0 | - | 4.40 | 18,690 |
| History of Illinois | 0 | - | 4.24 | 11,173 |
| History of Florida | 0 | - | 4.45 | 9,759 |
| History of Massachusetts | 0 | - | 4.14 | 8,323 |
| History of Tennessee | 0 | - | 4.29 | 7,628 |
| History of Ohio | 0 | - | 4.14 | 7,306 |
| History of Washington State | 0 | - | 4.27 | 6,836 |
| History of New Jersey | 0 | - | 4.38 | 7,203 |
| History of Michigan | 0 | - | 4.26 | 6,901 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 491,244 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 389,462 |
| Groups of Things - Harry Potter | 0 | - | 4.82 | 280,006 |
| EU Countries Quiz | 0 | - | 4.99 | 269,607 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,056 |
| NATO Countries | 0 | - | 4.98 | 275,324 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,312 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,819 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,189 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,139 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 137,623 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,338 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,027 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,055 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 66,158 |
