| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,644 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,651,000 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,834 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,445 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,431 |
| American Revolution Decoder | 0 | - | 4.10 | 20,873 |
| Vietnam War Countries | 0 | - | 4.83 | 93,567 |
| The American Revolution | 0 | - | 4.52 | 54,042 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,402 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,215 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,357 |
| Random U.S. States on a Map | 0 | - | 4.96 | 621,086 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,624 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,272 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,280 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,296 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,770 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,629 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,829 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,890 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,408 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,947 |
| Presidential Middle Names | 0 | - | 4.41 | 59,660 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,694 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,769 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,721 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,150 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 192,457 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,178 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,135 |
| Name a Valid Asian Country | 0 | - | 4.98 | 119,995 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,233 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,460 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,278 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,464 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,477 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,541 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,101 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 299,865 |
| Countries of the German Empire | 0 | - | 4.51 | 37,640 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,166 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 81,732 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,654 |
| Countries that Beat China | 0 | - | 4.86 | 114,660 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,681 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,522 |
| Arms Exports - United States | 0 | - | 4.70 | 54,303 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,160 |
| First Ladies of the United States | 0 | - | 4.28 | 85,217 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,102 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,215 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,992 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,677 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 87,978 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,297 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,439,054 |
| Asia Map Quiz | 0 | - | 4.99 | 906,410 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,360 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,354 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,081 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,023 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,957 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,433 |
| U.S. President Scramble | 0 | - | 4.40 | 116,161 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,695 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,012 |
| American History Quotes #1 | 0 | - | 4.37 | 95,671 |
| American History Quotes #2 | 0 | - | 4.38 | 41,220 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,067 |
| US States Quiz | 0 | - | 5.00 | 16,688,490 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,517,073 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,170 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,241 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,753 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,200 |
| Flags of Asia Quiz | 0 | - | 4.99 | 604,964 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 109,309 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,710 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,352 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,174 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 57,600 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,633 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,413 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,385 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,446 |
| Countries of the Middle East | 0 | - | 4.96 | 198,791 |
| The Vietnam War | 0 | - | 4.43 | 35,283 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,163 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.68 | 55,145 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 57,742 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,304 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,818 |
| Name a Valid African Country | 0 | - | 4.98 | 152,863 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,897 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,248 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,543 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,242 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,591 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,813 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,083 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,373 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,704 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,499 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 617,902 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,455 |
| Presidential Actors | 0 | - | 4.36 | 19,051 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,809 |
| The George Washington Presidency | 0 | - | 4.03 | 14,469 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,653 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,476 |
| The John Adams Presidency | 0 | - | 4.12 | 8,674 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,864 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,679 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,201 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,604 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,767 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,009 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,572 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,460 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,379,397 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,014 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,150 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 22,901 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,844 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,488 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,128 |
| Countries of the Italian Empire | 0 | - | 4.21 | 27,532 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,706 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,171 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 104,969 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,491 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,471 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 133,654 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,626 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,188 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,343 |
| Monarchies of Asia | 0 | - | 4.97 | 70,563 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,409 |
| Countries Closest to the Persian Gulf | 0 | - | 4.93 | 82,959 |
| The Iraq War | 0 | - | 4.47 | 15,545 |
| Syria Country Quiz | 0 | - | 4.81 | 32,276 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,411 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 100,758 |
| China Cities Map Quiz | 0 | - | 4.93 | 103,976 |
| Provinces of China Map Quiz | 0 | - | 4.92 | 92,723 |
| Japan Country Quiz | 0 | - | 4.92 | 141,172 |
| Closest Countries to North Korea | 0 | - | 4.94 | 121,753 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 92,753 |
| Kazakhstan Country Quiz | 0 | - | 4.85 | 30,633 |
| Bhutan Country Quiz | 0 | - | 4.87 | 23,999 |
| States of India Map Quiz | 0 | - | 4.82 | 25,997 |
| Countries Bordering India | 0 | - | 4.98 | 162,559 |
| Countries that Beat India | 0 | - | 4.41 | 62,563 |
| Countries Closest to India | 0 | - | 4.97 | 102,175 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,261 |
| Hindu Countries | 0 | - | 4.85 | 49,498 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,923 |
| Countries that Beat Australia | 0 | - | 4.92 | 92,050 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,782 |
| Rivers of the United States | 0 | - | 4.93 | 65,454 |
| Pixelated United States Map | 0 | - | 4.89 | 93,415 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,366 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,789 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,333 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,367 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,071 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 80,839 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 74,878 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,344 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,413 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,712 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,916 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,243 |
| American Founding Fathers | 0 | - | 4.41 | 23,066 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,248 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,398 |
| Six Flags Over Texas | 0 | - | 4.79 | 62,988 |
| LeBron James Trivia | 0 | - | 4.01 | 169,814 |
| People on Money - United States | 0 | - | 4.31 | 63,199 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,224 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,708 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,982 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,636 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,492 |
| The American Civil War | 0 | - | 4.62 | 52,111 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,643 |
| U.S. States by Clue #1 | 0 | - | 4.53 | 38,562 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,287 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,335 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,559 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,822 |
| U.S. States By Population | 0 | - | 4.92 | 152,295 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,319 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,814 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,223 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,063 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 40,961 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 41,735 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,504 |
| US States with an Empty Map | 0 | - | 5.00 | 618,431 |
