| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,690 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,654,481 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,861 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,747 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,577 |
| American Revolution Decoder | 0 | - | 4.10 | 20,878 |
| Vietnam War Countries | 0 | - | 4.83 | 93,609 |
| The American Revolution | 0 | - | 4.52 | 54,057 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,471 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,552 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,509 |
| Random U.S. States on a Map | 0 | - | 4.96 | 621,506 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,740 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,354 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,309 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,361 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,899 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,680 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,941 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,949 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,501 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,001 |
| Presidential Middle Names | 0 | - | 4.41 | 59,703 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,738 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,821 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,745 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,173 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 192,556 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,257 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,268 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,050 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,277 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,582 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,378 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,480 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,879 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,710 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,198 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 300,038 |
| Countries of the German Empire | 0 | - | 4.51 | 37,660 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,217 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 81,812 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,681 |
| Countries that Beat China | 0 | - | 4.86 | 114,712 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,733 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,870 |
| Arms Exports - United States | 0 | - | 4.70 | 54,355 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,166 |
| First Ladies of the United States | 0 | - | 4.28 | 85,245 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,111 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,298 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,002 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,687 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,045 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,551 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,480 |
| Asia Map Quiz | 0 | - | 4.99 | 907,036 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,380 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,364 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,088 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,035 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,959 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,447 |
| U.S. President Scramble | 0 | - | 4.40 | 116,202 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,858 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,025 |
| American History Quotes #1 | 0 | - | 4.37 | 95,690 |
| American History Quotes #2 | 0 | - | 4.38 | 41,223 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,078 |
| US States Quiz | 0 | - | 5.00 | 16,701,091 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,518,653 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,774 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,440 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,838 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,240 |
| Flags of Asia Quiz | 0 | - | 4.99 | 605,575 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 109,344 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,762 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,416 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,246 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 57,622 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,707 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,491 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,472 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,921 |
| Countries of the Middle East | 0 | - | 4.96 | 198,926 |
| The Vietnam War | 0 | - | 4.43 | 35,294 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,214 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.68 | 55,177 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 57,776 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,331 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,863 |
| Name a Valid African Country | 0 | - | 4.98 | 152,936 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,961 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,263 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,971 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,328 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,662 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,871 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,158 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,920 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,007 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,526 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 618,506 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,461 |
| Presidential Actors | 0 | - | 4.36 | 19,065 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,815 |
| The George Washington Presidency | 0 | - | 4.03 | 14,475 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,661 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,502 |
| The John Adams Presidency | 0 | - | 4.12 | 8,676 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,870 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,682 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,214 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,609 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,773 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,075 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,624 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,493 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,380,359 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,032 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,274 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 22,914 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,948 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,794 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,251 |
| Countries of the Italian Empire | 0 | - | 4.21 | 27,550 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,869 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,285 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 105,042 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,509 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,492 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 133,775 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,654 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,251 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,411 |
| Monarchies of Asia | 0 | - | 4.97 | 70,603 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,432 |
| Countries Closest to the Persian Gulf | 0 | - | 4.93 | 82,981 |
| The Iraq War | 0 | - | 4.47 | 15,552 |
| Syria Country Quiz | 0 | - | 4.81 | 32,314 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,450 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 100,798 |
| China Cities Map Quiz | 0 | - | 4.93 | 104,044 |
| Provinces of China Map Quiz | 0 | - | 4.92 | 92,779 |
| Japan Country Quiz | 0 | - | 4.92 | 141,244 |
| Closest Countries to North Korea | 0 | - | 4.94 | 121,806 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 92,784 |
| Kazakhstan Country Quiz | 0 | - | 4.85 | 30,887 |
| Bhutan Country Quiz | 0 | - | 4.87 | 24,015 |
| States of India Map Quiz | 0 | - | 4.82 | 26,036 |
| Countries Bordering India | 0 | - | 4.98 | 162,603 |
| Countries that Beat India | 0 | - | 4.41 | 62,591 |
| Countries Closest to India | 0 | - | 4.97 | 102,207 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,353 |
| Hindu Countries | 0 | - | 4.85 | 49,580 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,955 |
| Countries that Beat Australia | 0 | - | 4.92 | 92,104 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,806 |
| Rivers of the United States | 0 | - | 4.93 | 65,518 |
| Pixelated United States Map | 0 | - | 4.89 | 93,481 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,468 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,855 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,419 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,376 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,114 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 80,870 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 74,904 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,352 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,419 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,721 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,922 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,256 |
| American Founding Fathers | 0 | - | 4.41 | 23,074 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,318 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,447 |
| Six Flags Over Texas | 0 | - | 4.79 | 63,013 |
| LeBron James Trivia | 0 | - | 4.01 | 169,896 |
| People on Money - United States | 0 | - | 4.31 | 63,206 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,241 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,731 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,993 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,645 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,498 |
| The American Civil War | 0 | - | 4.62 | 52,160 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,736 |
| U.S. States by Clue #1 | 0 | - | 4.53 | 38,616 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,364 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,419 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,671 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,908 |
| U.S. States By Population | 0 | - | 4.92 | 152,371 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,405 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,867 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,252 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,088 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 40,974 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 41,761 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,586 |
| US States with an Empty Map | 0 | - | 5.00 | 618,840 |
