| U.S. Presidents Quiz | 0 | - | 5.00 | 3,689,800 |
| The American Revolution | 0 | - | 4.52 | 54,220 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,183 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,650 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,007 |
| Hawaiian Islands | 0 | - | 4.83 | 42,658 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,280 |
| U.S. State Flags | 0 | - | 4.89 | 169,826 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,285 |
| The Iraq War | 0 | - | 4.47 | 15,641 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,776 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,644 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,555 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,286 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,622 |
| Presidential Middle Names | 0 | - | 4.41 | 60,126 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,206 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,463 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,366 |
| The American Civil War | 0 | - | 4.62 | 52,381 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,881 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,100 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,284 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,064 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 132,569 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,161 |
| Hindu Countries | 0 | - | 4.86 | 50,023 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,948 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,565 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,252 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,195 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,720 |
| The Persian Gulf War | 0 | - | 4.02 | 8,445 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,577 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,117 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,099 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,869 |
| United States Map Quiz | 0 | - | 4.98 | 4,154,506 |
| American Monopoly Board - Map Quiz | 0 | - | 4.52 | 21,197 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,065 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,759 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 625,669 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,003 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,082 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,244 |
| First Ladies of the United States | 0 | - | 4.28 | 85,549 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,204 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,959 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,167 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,940 |
| Harvard University | 0 | - | 4.15 | 8,292 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,290 |
| Top 10 Most Jewish U.S. States | 0 | - | 4.31 | 42,918 |
| U.S. States that Border Canada | 0 | - | 4.91 | 184,426 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 23,007 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,801 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,957 |
| Asia Map Quiz | 0 | - | 4.99 | 914,883 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,647 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,497 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,093 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,047 |
| Arms Exports - United States | 0 | - | 4.75 | 62,293 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,441 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,240 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,160 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,419 |
| Georgia Counties | 0 | - | 4.50 | 49,422 |
| New York Counties | 0 | - | 4.65 | 50,457 |
| Texas Counties | 0 | - | 4.55 | 76,636 |
| North Carolina Counties | 0 | - | 4.54 | 53,139 |
| Ohio Counties | 0 | - | 4.47 | 45,772 |
| Pennsylvania Counties | 0 | - | 4.49 | 52,644 |
| Virginia Counties | 0 | - | 4.45 | 33,210 |
| West Virginia Counties | 0 | - | 4.63 | 33,735 |
| Satellite Images - U.S. States | 0 | - | 4.53 | 45,113 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,392 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 41,923 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,406 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,894 |
| Cartoon Versions of U.S. States | 0 | - | 4.77 | 63,826 |
| U.S. States by Nickname | 0 | - | 4.57 | 69,486 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,658 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,452 |
| Flags of Asia Quiz | 0 | - | 4.99 | 611,685 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 57,920 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 98,700 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,381,500 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,376 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,212 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,665 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,355 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,145 |
| History of Florida | 0 | - | 4.45 | 9,813 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,771 |
| History of Texas | 0 | - | 4.43 | 14,608 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,832 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,219 |
| US States Quiz | 0 | - | 5.00 | 16,838,236 |
| Major U.S. Rivers with State Names | 0 | - | 4.49 | 39,530 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,841 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,927 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,629 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,109 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,566 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,998 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,843 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 105,807 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,688 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,310 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,089 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 135,380 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,902 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,025 |
| Monarchies of Asia | 0 | - | 4.97 | 70,998 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,789 |
| Countries of the Middle East | 0 | - | 4.96 | 200,816 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,730 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 93,199 |
| Countries Bordering India | 0 | - | 4.98 | 163,345 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,395 |
| Countries Closest to India | 0 | - | 4.97 | 102,660 |
| Modern Day Countries of the Mughal Empire on a Map | 0 | - | 4.42 | 33,549 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 58,142 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,665 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,483 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,145 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,410 |
| Puerto Rico Trivia | 0 | - | 4.51 | 11,989 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,821 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,359 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,223 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,336 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 331,188 |
| Pixelated United States Map | 0 | - | 4.87 | 94,104 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,381 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,551 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,931 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,813 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,504 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,605 |
| The George Washington Presidency | 0 | - | 4.03 | 14,538 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,716 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,622 |
| The John Adams Presidency | 0 | - | 4.12 | 8,736 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,921 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,730 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,659 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,837 |
| Star-Spangled Banner Lyrics | 0 | - | 4.36 | 179,220 |
| California Counties Map Quiz | 0 | - | 4.36 | 34,441 |
| California Counties | 0 | - | 4.39 | 118,920 |
| Colorado Counties | 0 | - | 4.45 | 26,623 |
| Florida Counties | 0 | - | 4.39 | 48,487 |
| State Quiz - Hawaii | 0 | - | 4.35 | 65,254 |
| Illinois Counties | 0 | - | 4.56 | 30,352 |
| Indiana Counties | 0 | - | 4.46 | 28,876 |
| Michigan Counties | 0 | - | 4.63 | 30,288 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,107 |
| U.S. States that Border Missouri | 0 | - | 4.55 | 12,794 |
| Las Vegas Casinos | 0 | - | 4.12 | 38,034 |
| New Jersey Counties | 0 | - | 4.57 | 30,242 |
| Washington Counties | 0 | - | 4.78 | 26,806 |
| Wisconsin Counties | 0 | - | 4.51 | 26,880 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,947 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,664 |
| Word Puzzles - U.S. States | 0 | - | 3.76 | 42,506 |
| U.S. States Bordering the Great Lakes | 0 | - | 4.54 | 18,238 |
| States and Provinces that Touch the Great Lakes | 0 | - | 4.54 | 28,887 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,198 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,234 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,735 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,002 |
| U.S. States By Population | 0 | - | 4.92 | 153,026 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,225 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,339 |
| US States with an Empty Map | 0 | - | 5.00 | 623,469 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,401 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,655 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,159 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,121 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,487 |
| TV Shows by U.S. State | 0 | - | 4.33 | 47,418 |
| U.S. States by Alternate Nicknames | 0 | - | 4.24 | 42,895 |
| Books by U.S. State | 0 | - | 4.20 | 13,984 |
| U.S. National Parks by State - Multiple Choice | 0 | - | 4.46 | 19,250 |
| Corporations by U.S. State - Multiple Choice | 0 | - | 4.11 | 10,209 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,805 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,590 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,067 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,432 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,128 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,401 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,506 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,072 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,725 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,834 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,264 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,778 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,276 |
