| U.S. Presidents Quiz | 0 | - | 5.00 | 3,731,321 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,886 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,907 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 194,964 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 194,035 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,425 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,728 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,670 |
| Assassinated U.S. Presidents | 0 | - | 4.62 | 94,939 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,758 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,661 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,745 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,966 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,255 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,471 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,337 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,776 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,370 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,386 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,786 |
| U.S. Vice Presidents | 0 | - | 4.39 | 137,180 |
| U.S. President Scramble | 0 | - | 4.40 | 117,562 |
| First Ladies of the United States | 0 | - | 4.28 | 86,024 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,866 |
| Presidential Middle Names | 0 | - | 4.42 | 60,806 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,116 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,623 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,657 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,951 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,558 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,657 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,907 |
| The Barack Obama Presidency | 0 | - | 4.14 | 25,532 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.38 | 24,089 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,110 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,563 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,382 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,246 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,798 |
| Presidential Actors | 0 | - | 4.36 | 19,263 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,398 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,789 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,776 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 17,001 |
| The John Adams Presidency | 0 | - | 4.12 | 8,799 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 235,451 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,983 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,763 |
| U.S. States that Border Canada | 0 | - | 4.91 | 187,069 |
| Prime Ministers of the UK | 0 | - | 4.95 | 443,191 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,297 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,462 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,152 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,660 |
| The George Washington Presidency | 0 | - | 4.03 | 14,622 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,239 |
| The Kennedy Family | 0 | - | 3.90 | 14,108 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,893 |
| US States Quiz | 0 | - | 5.00 | 17,024,046 |
| US States with an Empty Map | 0 | - | 5.00 | 629,630 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 510,974 |
| Random U.S. States on a Map | 0 | - | 4.96 | 631,283 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,900 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,874 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,575 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,380 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,703 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,002 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,163 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,877 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,694 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 126,021 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 107,212 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,618 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,488 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,761 |
| U.S. Senators by State | 0 | - | 4.44 | 40,143 |
| Hottest U.S. State Capitals | 0 | - | 4.77 | 29,343 |
| United States Map Quiz | 0 | - | 4.98 | 4,173,640 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,700,595 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 336,264 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,828 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,322 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 247,064 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 178,682 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 161,178 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 160,244 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,754 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 151,381 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,610 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,196 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,402 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.70 | 61,517 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,377 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,600 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,211 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 50,275 |
| Name the English Monarchs | 0 | - | 4.91 | 507,410 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,467 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,679 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,555 |
| Vietnam War Countries | 0 | - | 4.82 | 94,760 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,232 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,975 |
| The American Revolution | 0 | - | 4.52 | 54,389 |
| The American Civil War | 0 | - | 4.62 | 52,660 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,663 |
| Canadian Prime Ministers | 0 | - | 4.64 | 58,010 |
| Biggest Cities in the Confederate States in 1860 | 0 | - | 4.41 | 23,740 |
| History of Texas | 0 | - | 4.43 | 14,699 |
| Harvard University | 0 | - | 4.15 | 8,335 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,193 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,166 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,875 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,614 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,509 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,033,391 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 645,426 |
| Canada Provinces and Territories | 0 | - | 5.00 | 347,133 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,663 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,678 |
| North America Map Quiz | 0 | - | 4.98 | 252,835 |
| Central American Countries | 0 | - | 4.98 | 157,557 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,407 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,920 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 114,039 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,569 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.80 | 102,343 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,773 |
| Countries Closest to Alaska | 0 | - | 4.93 | 125,303 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 94,470 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,842 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,965 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 104,866 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 118,463 |
| Pixelated United States Map | 0 | - | 4.89 | 94,939 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 85,000 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 89,996 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 76,072 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,203 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 83,110 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,723 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,577 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,879 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,175 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,600 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,539 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,827 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 83,451 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,701 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 95,304 |
| Name a Valid U.S. State Capital #1 | 0 | - | 4.75 | 54,765 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,383 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,002 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,470 |
| Name that Greek Letter | 0 | - | 4.93 | 325,298 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,615 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,646 |
| Countries in World War I | 0 | - | 4.88 | 229,461 |
| Figures from Greek Mythology | 0 | - | 4.91 | 192,036 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,643 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,563 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,743 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.89 | 114,484 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,690 |
| People on Money - United States | 0 | - | 4.31 | 63,476 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 79,603 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 60,530 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 50,567 |
| The Vietnam War | 0 | - | 4.44 | 35,691 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,619 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,346 |
| American Revolution Decoder | 0 | - | 4.12 | 21,004 |
| U.S. History A-Z #1 | 0 | - | 4.36 | 30,582 |
| History of New York | 0 | - | 4.36 | 16,430 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,271 |
| History of California | 0 | - | 4.40 | 18,805 |
| History of Illinois | 0 | - | 4.24 | 11,262 |
| History of Florida | 0 | - | 4.45 | 9,883 |
| History of Massachusetts | 0 | - | 4.14 | 8,442 |
| History of Tennessee | 0 | - | 4.29 | 7,693 |
| History of Ohio | 0 | - | 4.14 | 7,390 |
| History of Washington State | 0 | - | 4.27 | 6,922 |
| History of New Jersey | 0 | - | 4.38 | 7,319 |
| History of Michigan | 0 | - | 4.26 | 6,992 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 494,966 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 398,020 |
| Groups of Things - Harry Potter | 0 | - | 4.77 | 282,922 |
| EU Countries Quiz | 0 | - | 4.99 | 278,954 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 218,246 |
| NATO Countries | 0 | - | 4.98 | 284,051 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,359 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,188 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,078 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,985 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 139,102 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,833 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,955 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 95,690 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 66,762 |
