| U.S. Presidents Quiz | 0 | - | 5.00 | 3,129,521 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 391,411 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 350,533 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.97 | 176,698 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 164,605 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.44 | 275,555 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 121,914 |
| U.S. Presidential Trivia #1 | 0 | - | 4.51 | 96,009 |
| Assassinated U.S. Presidents | 0 | - | 4.54 | 79,356 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.56 | 80,367 |
| Name a Valid U.S. President #2 | 0 | - | 4.52 | 51,447 |
| U.S. Presidential Trivia #2 | 0 | - | 4.51 | 39,161 |
| The John F. Kennedy Presidency | 0 | - | 4.45 | 40,738 |
| U.S. Presidents Who Died in Office | 0 | - | 4.72 | 31,004 |
| U.S. Presidents by Event | 0 | - | 4.57 | 28,861 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 24,739 |
| Random U.S. Vice President to President | 0 | - | 4.57 | 22,996 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.46 | 20,665 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.62 | 13,705 |
| The Theodore Roosevelt Presidency | 0 | - | 4.30 | 7,090 |
| U.S. Vice Presidents | 0 | - | 4.42 | 117,831 |
| U.S. President Scramble | 0 | - | 4.39 | 90,074 |
| First Ladies of the United States | 0 | - | 4.27 | 79,379 |
| U.S. Presidents by State | 0 | - | 4.29 | 65,715 |
| Presidential Middle Names | 0 | - | 4.36 | 55,842 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 44,865 |
| U.S. Presidential Quotes | 0 | - | 4.35 | 42,580 |
| Random U.S. Presidents by Picture | 0 | - | 4.36 | 56,001 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 37,251 |
| The Bill Clinton Presidency | 0 | - | 4.18 | 30,067 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 33,386 |
| The Ronald Reagan Presidency | 0 | - | 4.25 | 23,512 |
| The Barack Obama Presidency | 0 | - | 4.20 | 23,449 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.41 | 22,405 |
| The Richard Nixon Presidency | 0 | - | 4.10 | 20,713 |
| The George H. W. Bush Presidency | 0 | - | 4.35 | 20,466 |
| Governors Who Ran For President | 0 | - | 4.46 | 18,820 |
| The Jimmy Carter Presidency | 0 | - | 4.39 | 17,949 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 25,413 |
| Presidential Actors | 0 | - | 4.33 | 17,682 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.31 | 16,709 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 12,793 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.32 | 20,397 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.32 | 10,646 |
| The John Adams Presidency | 0 | - | 4.10 | 7,908 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 216,972 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 220,367 |
| Category Elimination - U.S. States #1 | 0 | - | 4.91 | 192,834 |
| U.S. States that Border Canada | 0 | - | 4.90 | 164,795 |
| Prime Ministers of the UK | 0 | - | 4.95 | 377,019 |
| The George W. Bush Presidency | 0 | - | 4.06 | 30,810 |
| Louisiana Purchase with a Map | 0 | - | 4.94 | 35,372 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.75 | 19,205 |
| U.S. Presidents True or False | 0 | - | 3.94 | 14,531 |
| The George Washington Presidency | 0 | - | 4.02 | 13,563 |
| George Bush... or George Bush | 0 | - | 3.89 | 7,684 |
| The Kennedy Family | 0 | - | 3.85 | 13,182 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 67,497 |
| US States Quiz | 0 | - | 5.00 | 14,548,990 |
| US States with an Empty Map | 0 | - | 5.00 | 547,875 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 455,458 |
| Random U.S. States on a Map | 0 | - | 4.95 | 475,500 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 337,898 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 182,285 |
| U.S. States that Start with M | 0 | - | 4.91 | 148,979 |
| U.S. States that Start with N | 0 | - | 4.95 | 154,120 |
| Countries of the Soviet Union | 0 | - | 4.98 | 183,366 |
| Deadliest U.S. Wars | 0 | - | 4.82 | 156,711 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,192 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.31 | 10,251 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 99,752 |
| Top 10 Coldest U.S. States | 0 | - | 4.91 | 99,230 |
| Most Guessed U.S. Cities | 0 | - | 4.90 | 90,222 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.82 | 60,450 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.52 | 69,488 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.67 | 73,052 |
| U.S. Senators by State | 0 | - | 4.49 | 35,807 |
| Hottest U.S. State Capitals | 0 | - | 4.76 | 21,515 |
| United States Map Quiz | 0 | - | 4.98 | 3,878,355 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,513,802 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.95 | 269,011 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 171,061 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 166,686 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.95 | 181,641 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 148,294 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 144,200 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 130,366 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 144,921 |
| U.S. State Capitals Map Quiz | 0 | - | 4.91 | 123,096 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 114,739 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 99,268 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 70,192 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.76 | 52,652 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.87 | 50,515 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 57,791 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 53,854 |
| Great Plains States and Provinces on a Map | 0 | - | 4.94 | 37,098 |
| English Monarchs Quiz | 0 | - | 4.91 | 442,451 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 395,911 |
| Countries of Europe After World War II | 0 | - | 4.98 | 168,988 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 129,904 |
| Vietnam War Countries | 0 | - | 4.80 | 85,430 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 73,851 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 70,201 |
| The American Revolution | 0 | - | 4.55 | 51,441 |
| The American Civil War | 0 | - | 4.72 | 48,628 |
| Six Flags Over Texas | 0 | - | 4.84 | 58,362 |
| Canadian Prime Ministers Quiz | 0 | - | 4.56 | 45,621 |
| Biggest Cities in the Confederate States in 1860 | 0 | - | 4.39 | 22,193 |
| History of Texas | 0 | - | 4.41 | 13,409 |
| Harvard University | 0 | - | 4.15 | 7,680 |
| U.S. Federal Agency Acronyms | 0 | - | 4.51 | 75,593 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 67,195 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.43 | 68,450 |
| U.S. Bill of Rights | 0 | - | 4.56 | 30,958 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 846,739 |
| Countries of North America Quiz | 0 | - | 5.00 | 867,782 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 572,821 |
| Canada Provinces and Territories | 0 | - | 4.99 | 286,388 |
| Countries Closest to Canada | 0 | - | 4.90 | 183,106 |
| North America Capitals Quiz | 0 | - | 4.99 | 183,790 |
| North America Map Quiz | 0 | - | 4.98 | 194,010 |
| Central American Countries | 0 | - | 4.98 | 137,691 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 123,203 |
| Countries that Beat the United States | 0 | - | 4.92 | 143,406 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 105,986 |
| Total United States Immigration by Country | 0 | - | 4.89 | 95,776 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.82 | 90,222 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 98,450 |
| Countries Closest to Alaska | 0 | - | 4.92 | 97,954 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 80,057 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 79,059 |
| U.S. State Border Crossings | 0 | - | 4.96 | 81,365 |
| Random U.S. State Capitals on a Map | 0 | - | 4.94 | 81,124 |
| 500 Biggest US Cities | 0 | - | 4.84 | 96,013 |
| Pixelated United States Map | 0 | - | 4.91 | 81,167 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 68,736 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 73,383 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 64,540 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 89,407 |
| U.S. States with the Most Immigrants | 0 | - | 4.86 | 72,562 |
| Top 10 Newest U.S. States | 0 | - | 4.80 | 67,614 |
| U.S. States that Border Tennessee | 0 | - | 4.82 | 57,593 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.79 | 56,064 |
| 10 Northernmost U.S. States | 0 | - | 4.86 | 59,584 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 77,435 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.93 | 51,454 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.77 | 56,279 |
| Every U.S. Metro Area on a Map | 0 | - | 4.96 | 61,779 |
| Countries Closest to Maine | 0 | - | 4.84 | 58,217 |
| Most-Visited U.S. Cities | 0 | - | 4.87 | 70,965 |
| Name a Valid U.S. State Capital | 0 | - | 4.82 | 48,789 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.85 | 38,742 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 579,005 |
| Olympian Gods Quiz | 0 | - | 4.96 | 454,555 |
| Name that Greek Letter | 0 | - | 4.94 | 293,854 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 220,743 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 206,243 |
| Countries in World War I | 0 | - | 4.89 | 207,992 |
| Figures from Greek Mythology | 0 | - | 4.92 | 168,279 |
| Countries that Bordered the USSR | 0 | - | 4.94 | 141,364 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 132,140 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 137,715 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 99,174 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 97,638 |
| People on Money - United States | 0 | - | 4.31 | 61,596 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,081 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 55,963 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.19 | 40,966 |
| The Vietnam War | 0 | - | 4.41 | 32,522 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 47,932 |
| U.S. Civil War Decoder | 0 | - | 4.16 | 23,945 |
| American Revolution Decoder | 0 | - | 4.12 | 19,906 |
| American History A-Z | 0 | - | 4.31 | 16,230 |
| History of New York | 0 | - | 4.33 | 15,056 |
| History of Georgia (U.S. State) | 0 | - | 4.33 | 12,277 |
| History of California | 0 | - | 4.38 | 17,429 |
| History of Illinois | 0 | - | 4.28 | 10,379 |
| History of Florida | 0 | - | 4.44 | 8,664 |
| History of Massachusetts | 0 | - | 4.10 | 7,429 |
| History of Tennessee | 0 | - | 4.21 | 7,001 |
| History of Ohio | 0 | - | 4.12 | 6,625 |
| History of Washington State | 0 | - | 4.21 | 6,206 |
| History of New Jersey | 0 | - | 4.29 | 6,461 |
| History of Michigan | 0 | - | 4.21 | 6,216 |
| Ultimate Harry Potter Name Game | 0 | - | 4.95 | 461,397 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 345,426 |
| Groups of Things - Harry Potter | 0 | - | 4.85 | 258,558 |
| EU Countries Quiz | 0 | - | 4.99 | 225,684 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 201,084 |
| NATO Countries Quiz | 0 | - | 4.98 | 223,097 |
| Category Elimination - European Geography #1 | 0 | - | 4.97 | 197,930 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 175,451 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 179,852 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 176,421 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.58 | 129,840 |
| Category Elimination - U.S. States #2 | 0 | - | 4.79 | 113,931 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 80,265 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.87 | 67,096 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 61,787 |
