| U.S. Presidents Quiz | 0 | - | 5.00 | 3,406,837 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 409,167 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 367,732 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.97 | 185,670 |
| Name a Valid U.S. President #1 | 0 | - | 4.90 | 178,692 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.40 | 292,040 |
| Confederate States of the U.S. Civil War | 0 | - | 4.90 | 125,428 |
| U.S. Presidential Trivia #1 | 0 | - | 4.52 | 102,747 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 86,318 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.56 | 87,805 |
| Name a Valid U.S. President #2 | 0 | - | 4.53 | 65,608 |
| U.S. Presidential Trivia #2 | 0 | - | 4.48 | 48,491 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 42,249 |
| U.S. Presidents Who Died in Office | 0 | - | 4.78 | 32,884 |
| U.S. Presidents by Event | 0 | - | 4.57 | 30,587 |
| The Abraham Lincoln Presidency | 0 | - | 4.51 | 25,481 |
| Random U.S. Vice President to President | 0 | - | 4.48 | 29,362 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.47 | 22,053 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.63 | 14,986 |
| The Theodore Roosevelt Presidency | 0 | - | 4.33 | 7,406 |
| U.S. Vice Presidents | 0 | - | 4.39 | 127,791 |
| U.S. President Scramble | 0 | - | 4.39 | 111,440 |
| First Ladies of the United States | 0 | - | 4.27 | 82,468 |
| U.S. Presidents by State | 0 | - | 4.31 | 67,328 |
| Presidential Middle Names | 0 | - | 4.37 | 57,809 |
| People in Pictures with Barack Obama | 0 | - | 4.11 | 46,454 |
| U.S. Presidential Quotes | 0 | - | 4.36 | 43,598 |
| Random U.S. Presidents by Picture | 0 | - | 4.37 | 63,086 |
| People in Pictures with Ronald Reagan | 0 | - | 4.33 | 39,163 |
| The Bill Clinton Presidency | 0 | - | 4.19 | 30,767 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 35,424 |
| The Ronald Reagan Presidency | 0 | - | 4.25 | 24,172 |
| The Barack Obama Presidency | 0 | - | 4.17 | 24,452 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.42 | 23,180 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,398 |
| The George H. W. Bush Presidency | 0 | - | 4.34 | 20,989 |
| Governors Who Ran For President | 0 | - | 4.47 | 19,468 |
| The Jimmy Carter Presidency | 0 | - | 4.39 | 18,527 |
| U.S. Presidential Running Mates | 0 | - | 4.39 | 27,290 |
| Presidential Actors | 0 | - | 4.34 | 18,494 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 17,510 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,255 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,091 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,467 |
| The John Adams Presidency | 0 | - | 4.12 | 8,320 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 226,133 |
| U.S. Citizenship Test Questions | 0 | - | 4.84 | 230,254 |
| Category Elimination - U.S. States #1 | 0 | - | 4.91 | 206,460 |
| U.S. States that Border Canada | 0 | - | 4.91 | 171,482 |
| Prime Ministers of the UK | 0 | - | 4.95 | 408,310 |
| The George W. Bush Presidency | 0 | - | 4.06 | 31,498 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 41,291 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.71 | 19,620 |
| U.S. Presidents True or False | 0 | - | 3.94 | 15,083 |
| The George Washington Presidency | 0 | - | 4.03 | 14,067 |
| George Bush... or George Bush | 0 | - | 3.92 | 7,938 |
| The Kennedy Family | 0 | - | 3.84 | 13,664 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 82,315 |
| US States Quiz | 0 | - | 5.00 | 15,702,333 |
| US States with an Empty Map | 0 | - | 5.00 | 587,019 |
| Word Scramble - U.S. States | 0 | - | 4.96 | 478,546 |
| Random U.S. States on a Map | 0 | - | 4.95 | 562,720 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 353,995 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 195,589 |
| U.S. States that Start with M | 0 | - | 4.92 | 176,984 |
| U.S. States that Start with N | 0 | - | 4.94 | 163,234 |
| Countries of the Soviet Union | 0 | - | 4.98 | 189,326 |
| Deadliest U.S. Wars | 0 | - | 4.84 | 165,651 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 28,006 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.41 | 11,079 |
| Top 10 Hottest U.S. States | 0 | - | 4.85 | 117,109 |
| Top 10 Coldest U.S. States | 0 | - | 4.92 | 106,741 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 97,997 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 66,835 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 72,741 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 77,525 |
| U.S. Senators by State | 0 | - | 4.49 | 38,202 |
| Hottest U.S. State Capitals | 0 | - | 4.77 | 27,960 |
| United States Map Quiz | 0 | - | 4.98 | 4,035,006 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,604,532 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.96 | 302,946 |
| Top 10 Least Populous U.S. States | 0 | - | 4.93 | 182,018 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 172,890 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.95 | 200,265 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 159,248 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.94 | 152,766 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 151,360 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.95 | 165,001 |
| U.S. State Capitals Map Quiz | 0 | - | 4.91 | 134,072 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 123,054 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 108,753 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 86,480 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.75 | 54,009 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.85 | 53,373 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 61,042 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 60,371 |
| Great Plains States and Provinces on a Map | 0 | - | 4.94 | 43,173 |
| English Monarchs Quiz | 0 | - | 4.90 | 472,290 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 415,871 |
| Countries of Europe After World War II | 0 | - | 4.99 | 178,952 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 154,583 |
| Vietnam War Countries | 0 | - | 4.81 | 89,707 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 77,314 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 81,077 |
| The American Revolution | 0 | - | 4.52 | 52,933 |
| The American Civil War | 0 | - | 4.61 | 50,510 |
| Six Flags Over Texas | 0 | - | 4.80 | 60,900 |
| Canadian Prime Ministers Quiz | 0 | - | 4.63 | 53,465 |
| Biggest Cities in the Confederate States in 1860 | 0 | - | 4.40 | 22,941 |
| History of Texas | 0 | - | 4.43 | 14,071 |
| Harvard University | 0 | - | 4.15 | 8,040 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 78,125 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 70,163 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 72,380 |
| U.S. Bill of Rights | 0 | - | 4.53 | 31,685 |
| Central America and Caribbean Map Quiz | 0 | - | 4.88 | 879,314 |
| Countries of North America Quiz | 0 | - | 5.00 | 942,997 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 606,963 |
| Canada Provinces and Territories | 0 | - | 4.99 | 308,557 |
| Countries Closest to Canada | 0 | - | 4.90 | 190,970 |
| North America Capitals Quiz | 0 | - | 4.99 | 200,532 |
| North America Map Quiz | 0 | - | 4.98 | 220,505 |
| Central American Countries | 0 | - | 4.98 | 147,116 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 139,304 |
| Countries that Beat the United States | 0 | - | 4.92 | 156,518 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 110,721 |
| Total United States Immigration by Country | 0 | - | 4.88 | 103,332 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.78 | 93,184 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 119,093 |
| Countries Closest to Alaska | 0 | - | 4.91 | 104,209 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 91,076 |
| US State Capitals Quiz - No Hints | 0 | - | 4.97 | 83,910 |
| U.S. State Border Crossings | 0 | - | 4.96 | 85,865 |
| Random U.S. State Capitals on a Map | 0 | - | 4.91 | 97,404 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.89 | 107,033 |
| Pixelated United States Map | 0 | - | 4.90 | 87,471 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 74,484 |
| Random State Capital to U.S. State | 0 | - | 4.83 | 81,614 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.86 | 70,022 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 94,194 |
| U.S. States with the Most Immigrants | 0 | - | 4.84 | 77,849 |
| Top 10 Newest U.S. States | 0 | - | 4.83 | 82,516 |
| U.S. States that Border Tennessee | 0 | - | 4.78 | 58,931 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.83 | 66,421 |
| 10 Northernmost U.S. States | 0 | - | 4.89 | 78,346 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 84,748 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.93 | 54,637 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.83 | 61,280 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 69,391 |
| Countries Closest to Maine | 0 | - | 4.85 | 62,492 |
| Most-Visited U.S. Cities | 0 | - | 4.87 | 82,168 |
| Name a Valid U.S. State Capital #1 | 0 | - | 4.82 | 52,498 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.89 | 46,101 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 611,239 |
| Olympian Gods Quiz | 0 | - | 4.96 | 469,758 |
| Name that Greek Letter | 0 | - | 4.94 | 309,265 |
| Commonwealth of Nations Countries | 0 | - | 4.93 | 229,506 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 218,247 |
| Countries in World War I | 0 | - | 4.88 | 218,659 |
| Figures from Greek Mythology | 0 | - | 4.90 | 174,973 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 158,809 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 141,418 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 147,674 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 103,030 |
| Countries of the Japanese Empire | 0 | - | 4.96 | 101,442 |
| People on Money - United States | 0 | - | 4.32 | 62,531 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.68 | 76,859 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 58,241 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.19 | 42,896 |
| The Vietnam War | 0 | - | 4.42 | 34,039 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 52,255 |
| U.S. Civil War Decoder | 0 | - | 4.18 | 24,636 |
| American Revolution Decoder | 0 | - | 4.10 | 20,418 |
| American History A-Z | 0 | - | 4.32 | 17,028 |
| History of New York | 0 | - | 4.36 | 15,783 |
| History of Georgia (U.S. State) | 0 | - | 4.29 | 12,825 |
| History of California | 0 | - | 4.39 | 18,213 |
| History of Illinois | 0 | - | 4.29 | 10,866 |
| History of Florida | 0 | - | 4.45 | 9,329 |
| History of Massachusetts | 0 | - | 4.12 | 7,921 |
| History of Tennessee | 0 | - | 4.28 | 7,356 |
| History of Ohio | 0 | - | 4.14 | 7,038 |
| History of Washington State | 0 | - | 4.23 | 6,571 |
| History of New Jersey | 0 | - | 4.36 | 6,883 |
| History of Michigan | 0 | - | 4.23 | 6,620 |
| Ultimate Harry Potter Name Game | 0 | - | 4.95 | 476,465 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 369,221 |
| Groups of Things - Harry Potter | 0 | - | 4.83 | 271,074 |
| EU Countries Quiz | 0 | - | 4.99 | 252,497 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 209,289 |
| NATO Countries Quiz | 0 | - | 4.98 | 255,887 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 215,164 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 183,953 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 186,827 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 188,779 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 134,328 |
| Category Elimination - U.S. States #2 | 0 | - | 4.78 | 123,701 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 86,562 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.89 | 72,974 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 64,229 |
