| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,668 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,653,021 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,852 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,594 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,509 |
| American Revolution Decoder | 0 | - | 4.10 | 20,875 |
| Vietnam War Countries | 0 | - | 4.83 | 93,586 |
| The American Revolution | 0 | - | 4.52 | 54,050 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,440 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,481 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,454 |
| Random U.S. States on a Map | 0 | - | 4.96 | 621,249 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,685 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,320 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,295 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,334 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,846 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,651 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,894 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,924 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,455 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,991 |
| Presidential Middle Names | 0 | - | 4.41 | 59,689 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,718 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,800 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,733 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,161 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 192,515 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,221 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,215 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,030 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,255 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,535 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,324 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,474 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,694 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,633 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,158 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 299,971 |
| Countries of the German Empire | 0 | - | 4.51 | 37,651 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,195 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 81,771 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,671 |
| Countries that Beat China | 0 | - | 4.86 | 114,685 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,703 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,343 |
| Arms Exports - United States | 0 | - | 4.70 | 54,335 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,163 |
| First Ladies of the United States | 0 | - | 4.28 | 85,230 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,110 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,261 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,998 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,682 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,013 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,445 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,439,610 |
| Asia Map Quiz | 0 | - | 4.99 | 906,818 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,371 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,360 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,086 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,027 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,958 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,443 |
| U.S. President Scramble | 0 | - | 4.40 | 116,188 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,791 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,016 |
| American History Quotes #1 | 0 | - | 4.37 | 95,682 |
| American History Quotes #2 | 0 | - | 4.38 | 41,222 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,074 |
| US States Quiz | 0 | - | 5.00 | 16,695,952 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,517,941 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,538 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,337 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,805 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,220 |
| Flags of Asia Quiz | 0 | - | 4.99 | 605,339 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 109,338 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,739 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,379 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,215 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 57,613 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,685 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,462 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,439 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,681 |
| Countries of the Middle East | 0 | - | 4.96 | 198,862 |
| The Vietnam War | 0 | - | 4.43 | 35,288 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,199 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.68 | 55,163 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 57,767 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,324 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,850 |
| Name a Valid African Country | 0 | - | 4.98 | 152,916 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,938 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,257 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,826 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,296 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,637 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,850 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,122 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,828 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,872 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,508 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 618,244 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,457 |
| Presidential Actors | 0 | - | 4.36 | 19,061 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,812 |
| The George Washington Presidency | 0 | - | 4.03 | 14,473 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,658 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,496 |
| The John Adams Presidency | 0 | - | 4.12 | 8,676 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,868 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,681 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,206 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,608 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,770 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,041 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,608 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,477 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,379,800 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,026 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,221 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 22,909 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,906 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,679 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,211 |
| Countries of the Italian Empire | 0 | - | 4.21 | 27,541 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,776 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,228 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 105,006 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,500 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,483 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 133,720 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,645 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,223 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,379 |
| Monarchies of Asia | 0 | - | 4.97 | 70,590 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,426 |
| Countries Closest to the Persian Gulf | 0 | - | 4.93 | 82,972 |
| The Iraq War | 0 | - | 4.47 | 15,549 |
| Syria Country Quiz | 0 | - | 4.81 | 32,294 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,434 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 100,779 |
| China Cities Map Quiz | 0 | - | 4.93 | 104,011 |
| Provinces of China Map Quiz | 0 | - | 4.92 | 92,761 |
| Japan Country Quiz | 0 | - | 4.92 | 141,215 |
| Closest Countries to North Korea | 0 | - | 4.94 | 121,780 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 92,768 |
| Kazakhstan Country Quiz | 0 | - | 4.85 | 30,807 |
| Bhutan Country Quiz | 0 | - | 4.87 | 24,008 |
| States of India Map Quiz | 0 | - | 4.82 | 26,021 |
| Countries Bordering India | 0 | - | 4.98 | 162,584 |
| Countries that Beat India | 0 | - | 4.41 | 62,578 |
| Countries Closest to India | 0 | - | 4.97 | 102,198 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,315 |
| Hindu Countries | 0 | - | 4.85 | 49,550 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,946 |
| Countries that Beat Australia | 0 | - | 4.92 | 92,083 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,796 |
| Rivers of the United States | 0 | - | 4.93 | 65,494 |
| Pixelated United States Map | 0 | - | 4.89 | 93,452 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,435 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,827 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,381 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,374 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,102 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 80,857 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 74,893 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,352 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,417 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,719 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,919 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,251 |
| American Founding Fathers | 0 | - | 4.41 | 23,071 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,289 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,423 |
| Six Flags Over Texas | 0 | - | 4.79 | 63,003 |
| LeBron James Trivia | 0 | - | 4.01 | 169,855 |
| People on Money - United States | 0 | - | 4.31 | 63,203 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,237 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,726 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,989 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,643 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,495 |
| The American Civil War | 0 | - | 4.62 | 52,150 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,700 |
| U.S. States by Clue #1 | 0 | - | 4.53 | 38,589 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,333 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,379 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,629 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,877 |
| U.S. States By Population | 0 | - | 4.92 | 152,333 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,374 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,843 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,242 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,082 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 40,972 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 41,749 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,550 |
| US States with an Empty Map | 0 | - | 5.00 | 618,651 |
