| U.S. Presidents Quiz | 0 | - | 5.00 | 3,708,928 |
| The American Revolution | 0 | - | 4.52 | 54,295 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,373 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,917 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,352 |
| Hawaiian Islands | 0 | - | 4.83 | 42,780 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,387 |
| U.S. State Flags | 0 | - | 4.88 | 171,361 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,788 |
| The Iraq War | 0 | - | 4.47 | 15,674 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,224 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,940 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,731 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 94,012 |
| Presidential Middle Names | 0 | - | 4.41 | 60,419 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,458 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,671 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,488 |
| The American Civil War | 0 | - | 4.62 | 52,505 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,066 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,737 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,869 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,486 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,561 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,101 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,055 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,129 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,302 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,336 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,113 |
| The Persian Gulf War | 0 | - | 4.02 | 8,463 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,805 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,570 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,509 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,425 |
| Hindu Countries | 0 | - | 4.86 | 50,312 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,767 |
| American Monopoly Board - Map Quiz | 0 | - | 4.52 | 21,225 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,107 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,830 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 630,234 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,101 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,507 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,281 |
| First Ladies of the United States | 0 | - | 4.28 | 85,749 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,251 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,281 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,238 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 24,001 |
| Harvard University | 0 | - | 4.15 | 8,305 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,453 |
| Top 10 Most Jewish U.S. States | 0 | - | 4.31 | 43,024 |
| U.S. States that Border Canada | 0 | - | 4.91 | 185,597 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 23,078 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,857 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,775 |
| Asia Map Quiz | 0 | - | 4.99 | 919,836 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,907 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 83,001 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,296 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,221 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,172 |
| Arms Exports - United States | 0 | - | 4.77 | 62,534 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,610 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,456 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,345 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,633 |
| Georgia Counties | 0 | - | 4.51 | 49,654 |
| New York Counties | 0 | - | 4.65 | 50,823 |
| Texas Counties | 0 | - | 4.56 | 76,975 |
| North Carolina Counties | 0 | - | 4.54 | 53,423 |
| Ohio Counties | 0 | - | 4.48 | 45,959 |
| Pennsylvania Counties | 0 | - | 4.50 | 53,021 |
| Virginia Counties | 0 | - | 4.45 | 33,300 |
| West Virginia Counties | 0 | - | 4.63 | 33,872 |
| Satellite Images - U.S. States | 0 | - | 4.53 | 45,231 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,482 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 42,055 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,363 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,636 |
| Cartoon Versions of U.S. States | 0 | - | 4.75 | 64,014 |
| U.S. States by Nickname | 0 | - | 4.57 | 69,603 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,922 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,812 |
| Flags of Asia Quiz | 0 | - | 4.99 | 615,993 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 58,094 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,316 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,384,934 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,621 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,764 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,812 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,622 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,292 |
| History of Florida | 0 | - | 4.45 | 9,843 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,421 |
| History of Texas | 0 | - | 4.43 | 14,654 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,035 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,277 |
| US States Quiz | 0 | - | 5.00 | 16,920,214 |
| Major U.S. Rivers with State Names | 0 | - | 4.49 | 39,652 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,661 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,767 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,859 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,418 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,046 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,380 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 108,233 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 106,278 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,254 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,808 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,568 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 136,520 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,066 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,399 |
| Monarchies of Asia | 0 | - | 4.97 | 71,230 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,030 |
| Countries of the Middle East | 0 | - | 4.96 | 201,722 |
| Puerto Rico Trivia | 0 | - | 4.51 | 12,019 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,122 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,889 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,865 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 244,885 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 333,195 |
| Pixelated United States Map | 0 | - | 4.88 | 94,484 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,957 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,001 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,039 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,942 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,557 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,678 |
| The George Washington Presidency | 0 | - | 4.03 | 14,569 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,751 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,673 |
| The John Adams Presidency | 0 | - | 4.12 | 8,762 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,949 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,749 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,708 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,870 |
| Star-Spangled Banner Lyrics | 0 | - | 4.36 | 179,539 |
| California Counties Map Quiz | 0 | - | 4.36 | 34,527 |
| California Counties | 0 | - | 4.39 | 119,663 |
| Colorado Counties | 0 | - | 4.45 | 26,786 |
| Florida Counties | 0 | - | 4.39 | 48,745 |
| State Quiz - Hawaii | 0 | - | 4.35 | 65,429 |
| Illinois Counties | 0 | - | 4.56 | 30,470 |
| Indiana Counties | 0 | - | 4.46 | 29,047 |
| Michigan Counties | 0 | - | 4.63 | 30,434 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,407 |
| U.S. States that Border Missouri | 0 | - | 4.55 | 12,841 |
| Las Vegas Casinos | 0 | - | 4.13 | 38,091 |
| New Jersey Counties | 0 | - | 4.57 | 30,406 |
| Washington Counties | 0 | - | 4.78 | 26,986 |
| Wisconsin Counties | 0 | - | 4.51 | 27,014 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,200 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,139 |
| Word Puzzles - U.S. States | 0 | - | 3.76 | 42,553 |
| U.S. States Bordering the Great Lakes | 0 | - | 4.55 | 18,273 |
| States and Provinces that Touch the Great Lakes | 0 | - | 4.55 | 28,916 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,726 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,680 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,352 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,669 |
| U.S. States By Population | 0 | - | 4.92 | 153,750 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,727 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,603 |
| US States with an Empty Map | 0 | - | 5.00 | 626,079 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,712 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,833 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,510 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,337 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,800 |
| TV Shows by U.S. State | 0 | - | 4.33 | 47,486 |
| U.S. States by Alternate Nicknames | 0 | - | 4.24 | 42,947 |
| Books by U.S. State | 0 | - | 4.20 | 14,007 |
| U.S. National Parks by State - Multiple Choice | 0 | - | 4.46 | 19,284 |
| Corporations by U.S. State - Multiple Choice | 0 | - | 4.11 | 10,226 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,299 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,957 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,428 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,672 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,455 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,728 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,024 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,821 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,961 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,385 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,426 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,274 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,002 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,127 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,515 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,525 |
| Top 10 Richest Countries in Asia | 0 | - | 4.74 | 105,861 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,247 |
| Countries Closest to the Persian Gulf | 0 | - | 4.93 | 83,513 |
| Countries Bordering Iran | 0 | - | 4.83 | 95,673 |
| Countries that Border Iraq | 0 | - | 4.97 | 108,738 |
| Countries Closest to Turkey | 0 | - | 4.96 | 126,578 |
| Countries Bordering Turkey | 0 | - | 4.98 | 117,528 |
| Countries Bordering Saudi Arabia | 0 | - | 4.96 | 132,437 |
