| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,646 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,651,307 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,836 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,462 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,444 |
| American Revolution Decoder | 0 | - | 4.10 | 20,873 |
| Vietnam War Countries | 0 | - | 4.83 | 93,569 |
| The American Revolution | 0 | - | 4.52 | 54,042 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,410 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,257 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,373 |
| Random U.S. States on a Map | 0 | - | 4.96 | 621,105 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,629 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,281 |
| 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 | 105,781 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,633 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,839 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,895 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,411 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,953 |
| Presidential Middle Names | 0 | - | 4.41 | 59,662 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,698 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,773 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,721 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,151 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 192,464 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,184 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,142 |
| Name a Valid Asian Country | 0 | - | 4.98 | 119,999 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,234 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,472 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,286 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,466 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,516 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,559 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,107 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 299,906 |
| Countries of the German Empire | 0 | - | 4.51 | 37,644 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,168 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 81,736 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,657 |
| Countries that Beat China | 0 | - | 4.86 | 114,668 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,683 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,651 |
| 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 | 85,219 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,103 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,221 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,993 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,677 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 87,981 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,314 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,439,183 |
| Asia Map Quiz | 0 | - | 4.99 | 906,473 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,363 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,355 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,081 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,024 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,957 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,434 |
| U.S. President Scramble | 0 | - | 4.40 | 116,164 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,707 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,012 |
| American History Quotes #1 | 0 | - | 4.37 | 95,673 |
| American History Quotes #2 | 0 | - | 4.38 | 41,220 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,068 |
| US States Quiz | 0 | - | 5.00 | 16,689,460 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,517,250 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,248 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,256 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,761 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,203 |
| Flags of Asia Quiz | 0 | - | 4.99 | 605,026 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 109,314 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,712 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,357 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,178 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 57,601 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,639 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,420 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,392 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,496 |
| Countries of the Middle East | 0 | - | 4.96 | 198,801 |
| The Vietnam War | 0 | - | 4.43 | 35,284 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,164 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.68 | 55,147 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 57,744 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,304 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,822 |
| Name a Valid African Country | 0 | - | 4.98 | 152,874 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,907 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,248 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,595 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,250 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,599 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,819 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,090 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,438 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,731 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,503 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 617,974 |
| 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 | 14,470 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,653 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,487 |
| 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 | 18,203 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,605 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,767 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,013 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,573 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,464 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,379,459 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,017 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,159 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 22,903 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,853 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,513 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,134 |
| Countries of the Italian Empire | 0 | - | 4.21 | 27,532 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,710 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,177 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 104,973 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,493 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,471 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 133,668 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,631 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,190 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,349 |
| Monarchies of Asia | 0 | - | 4.97 | 70,566 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,410 |
| Countries Closest to the Persian Gulf | 0 | - | 4.93 | 82,960 |
| The Iraq War | 0 | - | 4.47 | 15,546 |
| Syria Country Quiz | 0 | - | 4.81 | 32,276 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,414 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 100,759 |
| China Cities Map Quiz | 0 | - | 4.93 | 103,983 |
| Provinces of China Map Quiz | 0 | - | 4.92 | 92,728 |
| Japan Country Quiz | 0 | - | 4.92 | 141,175 |
| Closest Countries to North Korea | 0 | - | 4.94 | 121,758 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 92,758 |
| Kazakhstan Country Quiz | 0 | - | 4.85 | 30,664 |
| Bhutan Country Quiz | 0 | - | 4.87 | 24,001 |
| States of India Map Quiz | 0 | - | 4.82 | 25,998 |
| Countries Bordering India | 0 | - | 4.98 | 162,563 |
| Countries that Beat India | 0 | - | 4.41 | 62,564 |
| Countries Closest to India | 0 | - | 4.97 | 102,178 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,268 |
| Hindu Countries | 0 | - | 4.85 | 49,506 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,924 |
| Countries that Beat Australia | 0 | - | 4.92 | 92,057 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,786 |
| Rivers of the United States | 0 | - | 4.93 | 65,465 |
| Pixelated United States Map | 0 | - | 4.89 | 93,417 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,377 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,796 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,341 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,369 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,076 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 80,842 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 74,882 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,349 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,415 |
| 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 | 25,244 |
| American Founding Fathers | 0 | - | 4.41 | 23,070 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,256 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,402 |
| Six Flags Over Texas | 0 | - | 4.79 | 62,989 |
| LeBron James Trivia | 0 | - | 4.01 | 169,824 |
| People on Money - United States | 0 | - | 4.31 | 63,199 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,225 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,711 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,982 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,639 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,493 |
| The American Civil War | 0 | - | 4.62 | 52,113 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,654 |
| U.S. States by Clue #1 | 0 | - | 4.53 | 38,565 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,296 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,345 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,567 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,831 |
| U.S. States By Population | 0 | - | 4.92 | 152,300 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,323 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,819 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,227 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,064 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 40,962 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 41,736 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,507 |
| US States with an Empty Map | 0 | - | 5.00 | 618,454 |
