| Prime Ministers of the UK | 0 | - | 4.95 | 384,374 |
| Political Figures by Last Name #2 | 0 | - | 4.05 | 14,843 |
| First Names of Recent World Leaders | 0 | - | 4.28 | 22,978 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.47 | 447,617 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.41 | 651,892 |
| Canadian Prime Ministers Quiz | 0 | - | 4.64 | 50,171 |
| G7 Leaders Since 2003 | 0 | - | 4.46 | 38,782 |
| World Leaders by Picture | 0 | - | 4.38 | 240,987 |
| Famous Dictators Quiz #1 | 0 | - | 4.75 | 184,271 |
| Dictators by Picture | 0 | - | 4.24 | 44,783 |
| Historical Leaders by Date #1 | 0 | - | 4.50 | 28,390 |
| Historical Leaders by Date #2 | 0 | - | 4.54 | 27,335 |
| Historical Rulers #2 | 0 | - | 4.26 | 43,375 |
| Historical Rulers #1 | 0 | - | 4.32 | 111,807 |
| Words for Leaders | 0 | - | 4.80 | 218,633 |
| World Leaders Quiz #1 | 0 | - | 4.12 | 102,448 |
| UN Secretaries-General | 0 | - | 4.42 | 7,161 |
| Prime Ministers of Australia | 0 | - | 4.48 | 28,197 |
| Famous Dictators Quiz #2 | 0 | - | 4.34 | 80,163 |
| Countries of the Popes | 0 | - | 4.85 | 111,826 |
| Brand Logos Quiz #1 | 0 | - | 4.82 | 2,138,126 |
| Spouses of World Leaders | 0 | - | 4.16 | 11,638 |
| World Leaders Quiz #2 | 0 | - | 4.01 | 25,132 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 18,426 |
| Biblical Names Still Popular Today | 0 | - | 4.27 | 47,906 |
| "Second Best" History Edition | 0 | - | 4.94 | 47,468 |
| Paramount Leaders of China | 0 | - | 4.31 | 10,001 |
| The Dictator Files: Chairman Mao | 0 | - | 4.32 | 18,638 |
| Famous Empires in History | 0 | - | 4.83 | 105,001 |
| Category Elimination - European Countries #1 | 0 | - | 4.88 | 77,479 |
| Category Elimination - Country Flags #1 | 0 | - | 4.97 | 126,829 |
| Prime Ministers of Israel | 0 | - | 4.10 | 16,256 |
| World Leaders of the Cold War | 0 | - | 4.34 | 22,589 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.76 | 58,785 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.42 | 24,171 |
| English First Names of the Middle Ages | 0 | - | 4.41 | 45,711 |
| Members of the British Royal Family | 0 | - | 4.11 | 109,585 |
| Superhero Nicknames | 0 | - | 4.22 | 57,607 |
| Former Countries by Territory Map | 0 | - | 4.97 | 86,732 |
| Empires by Maps | 0 | - | 4.98 | 95,996 |
| World Leaders of the World Wars | 0 | - | 4.40 | 34,596 |
| Soviet Leaders 1917–1991 | 0 | - | 4.42 | 87,853 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.19 | 40,890 |
| Name the Popes Quiz | 0 | - | 4.46 | 122,986 |
| Ultimate 20th Century History Quiz | 0 | - | 4.87 | 46,837 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 49,212 |
| NFL Football Last Names | 0 | - | 4.42 | 158,869 |
| Bible Quotes Quiz #1 | 0 | - | 4.42 | 56,610 |
| Bible Quotes Quiz #3 | 0 | - | 4.44 | 40,320 |
| Brand Logos Quiz #2 | 0 | - | 4.75 | 1,514,321 |
| Brand Logos Quiz #5 | 0 | - | 4.41 | 950,756 |
| Brand Logos Quiz #4 | 0 | - | 4.44 | 899,348 |
| Category Elimination - U.S. States #1 | 0 | - | 4.90 | 196,421 |
| Metals of Antiquity | 0 | - | 4.93 | 85,841 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 40,216 |
| History: What Came First? #1 | 0 | - | 4.84 | 91,977 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.32 | 40,067 |
| Mythical Creatures Quiz #1 | 0 | - | 4.91 | 659,557 |
| Political Movements by Country | 0 | - | 4.46 | 68,839 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 402,281 |
| Years in History #1 - Multiple Choice | 0 | - | 4.84 | 63,449 |
| World City Nicknames Quiz | 0 | - | 4.18 | 33,864 |
| U.S. State Nicknames Quiz | 0 | - | 4.48 | 46,497 |
| Game of Thrones Last Names | 0 | - | 4.46 | 93,624 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 195,325 |
| Name the Constellations Quiz | 0 | - | 4.57 | 41,507 |
| Cradles of Civilization | 0 | - | 4.41 | 32,737 |
| Materials From History #1 | 0 | - | 4.54 | 45,278 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.64 | 21,057 |
| Pope Facts | 0 | - | 4.41 | 28,121 |
| First Names of Painters | 0 | - | 4.38 | 56,547 |
| Biggest Nations and Empires Ever | 0 | - | 4.55 | 134,562 |
| Famous Explorers | 0 | - | 4.65 | 32,850 |
| Answers by Time Period | 0 | - | 4.49 | 42,879 |
| Territorial Accessions | 0 | - | 4.43 | 32,347 |
| Countries Italy Declared War On | 0 | - | 4.79 | 40,213 |
| NATO Countries Quiz | 0 | - | 4.98 | 227,550 |
| EU Countries Quiz | 0 | - | 4.99 | 229,783 |
| U.S. Federal Agency Acronyms | 0 | - | 4.51 | 76,353 |
| NBA Basketball Nicknames Quiz #1 | 0 | - | 4.21 | 142,275 |
| NBA Basketball Nicknames Quiz #2 | 0 | - | 4.10 | 54,078 |
| Countries as U.S. First Names | 0 | - | 4.25 | 70,517 |
| Most Common Surnames in the UK | 0 | - | 4.18 | 66,042 |
| Asian Last Names in the United States | 0 | - | 4.41 | 43,540 |
| Most Common First Names in Spain | 0 | - | 4.25 | 43,759 |
| NBA Players by Last Name | 0 | - | 4.28 | 76,088 |
| Bible Quotes Quiz #2 | 0 | - | 4.30 | 49,727 |
| American Corporate Slogans Quiz #1 | 0 | - | 4.05 | 63,578 |
| American Corporate Slogans Quiz #2 | 0 | - | 4.02 | 58,433 |
| Highest Grossing Superhero Movies | 0 | - | 4.37 | 155,935 |
| MCU Actors by Picture | 0 | - | 4.44 | 72,743 |
| Brand Logos Quiz #6 | 0 | - | 4.29 | 671,536 |
| Strongest Nation Brands | 0 | - | 4.51 | 34,165 |
| Brand Logos Quiz #3 | 0 | - | 4.34 | 1,100,405 |
| Brand Logos Quiz #8 | 0 | - | 4.33 | 453,618 |
| Brand Logos Quiz #7 | 0 | - | 4.38 | 528,378 |
| Random Brand Logos | 0 | - | 4.46 | 358,118 |
| Influential Women in History | 0 | - | 4.47 | 30,572 |
| Former Flags | 0 | - | 4.98 | 82,250 |
| Historical Events - AD or BC? | 0 | - | 4.75 | 52,527 |
| Materials From History #2 | 0 | - | 4.58 | 24,966 |
| States of the German Confederation in 1848 | 0 | - | 4.84 | 26,842 |
| 20th Century Dates Quiz | 0 | - | 4.53 | 38,018 |
| Events in History #2 | 0 | - | 4.47 | 67,244 |
| Events in History #4 | 0 | - | 4.44 | 41,242 |
| Name a Valid Year in History | 0 | - | 4.92 | 54,239 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.18 | 46,690 |
| Assassinations in History Quiz | 0 | - | 4.17 | 63,256 |
| Famous Seconds Quiz | 0 | - | 4.21 | 44,647 |
| Ages and Eras Quiz | 0 | - | 4.35 | 64,669 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.22 | 38,375 |
| Titled People Quiz #1 | 0 | - | 4.14 | 43,950 |
| Titled People Quiz #3 | 0 | - | 4.33 | 41,403 |
| Job Titles Quiz #1 | 0 | - | 4.23 | 73,670 |
| Historical Blunders | 0 | - | 4.32 | 86,996 |
| Last Names in U.S. History #1 | 0 | - | 4.24 | 34,367 |
| Last Names in U.S. History #2 | 0 | - | 4.41 | 16,081 |
| Political Quotes Quiz | 0 | - | 4.09 | 19,026 |
| This Day in History - April | 0 | - | 4.42 | 43,402 |
| This Day in History - July | 0 | - | 4.48 | 35,179 |
| This Day in History - August | 0 | - | 4.41 | 41,895 |
| This Day in History - September | 0 | - | 4.55 | 55,071 |
| This Day in History - October | 0 | - | 4.49 | 36,374 |
| This Day in History - January | 0 | - | 4.53 | 44,624 |
| This Day in History - February | 0 | - | 4.41 | 38,488 |
| This Day in History - March | 0 | - | 4.44 | 42,069 |
| The 7 Wonders of the Ancient World | 0 | - | 4.79 | 65,720 |
| Ancient Civilizations | 0 | - | 4.56 | 34,794 |
| 19th Century A-Z | 0 | - | 4.82 | 34,564 |
| Military History Vocabulary | 0 | - | 4.92 | 60,613 |
| The Reign of Napoleon | 0 | - | 4.53 | 36,289 |
| The Places They Went #1 | 0 | - | 4.77 | 32,472 |
| Famous Inventors | 0 | - | 4.44 | 42,504 |
| British History Quiz for Dummies | 0 | - | 4.54 | 62,078 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.14 | 949,106 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 223,180 |
| U.S. Bill of Rights | 0 | - | 4.53 | 31,152 |
| American Political Words | 0 | - | 4.41 | 22,391 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.58 | 24,680 |
| Unusual NBA Names Quiz | 0 | - | 3.77 | 184,589 |
| Unusual NFL First Names Quiz | 0 | - | 3.58 | 45,572 |
| NFL Team Nicknames | 0 | - | 3.88 | 89,285 |
| Country Nicknames | 0 | - | 3.95 | 95,936 |
| Rappers Real Names | 0 | - | 4.06 | 64,514 |
| Bible Quotes Quiz #4 | 0 | - | 4.32 | 31,363 |
| Quotes of Jesus | 0 | - | 4.21 | 12,527 |
| Horror Movie Quotes Quiz | 0 | - | 4.15 | 48,568 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.93 | 1,198,197 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 65,087 |
| MCU Characters by Screen Time | 0 | - | 4.18 | 94,480 |
| Brand-Name Animals Quiz | 0 | - | 4.22 | 71,447 |
| Clothing Brand Logos | 0 | - | 4.24 | 191,373 |
| European Cities by Wikipedia Descriptions | 0 | - | 4.42 | 51,466 |
| Asian Countries with the Shortest Names | 0 | - | 4.98 | 122,495 |
| Soft Drink Brand Logos | 0 | - | 4.26 | 158,492 |
| Countries Mentioned in the Bible | 0 | - | 4.97 | 56,854 |
| Body Parts in History and Culture | 0 | - | 4.48 | 32,974 |
| History Analogies #1 | 0 | - | 4.47 | 76,231 |
| History Analogies #2 | 0 | - | 4.51 | 64,731 |
| Current Events by Year, 1990–2009 | 0 | - | 4.75 | 145,082 |
| Current Events by Year, 1970–1989 | 0 | - | 4.56 | 61,858 |
| Current Events by Year, 1930–1949 | 0 | - | 4.48 | 49,738 |
| History Analogies #3 | 0 | - | 4.54 | 66,885 |
| People Born on Islands | 0 | - | 4.43 | 40,305 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.72 | 54,189 |
| Which Came First? | 0 | - | 4.35 | 69,589 |
| Years in History by Picture | 0 | - | 4.43 | 30,341 |
| Valid Answer - World History #2 | 0 | - | 4.41 | 39,641 |
| Random History by Country | 0 | - | 4.53 | 31,650 |
| Valid Answer - World History #1 | 0 | - | 4.57 | 56,577 |
| History True or False #3 | 0 | - | 4.55 | 37,325 |
| A to Z: Legendary Creatures | 0 | - | 4.31 | 48,574 |
| Arthurian Legend | 0 | - | 4.35 | 24,330 |
| WWII Geography | 0 | - | 4.81 | 100,300 |
| Normandy D-Day Beaches | 0 | - | 4.81 | 36,946 |
| WWII Figures by Picture | 0 | - | 4.88 | 41,196 |
| Territory Changes in World War I | 0 | - | 4.87 | 40,701 |
| Events in History #3 | 0 | - | 4.35 | 67,957 |
| Events in History #1 | 0 | - | 4.32 | 150,216 |
| Events in Ancient History | 0 | - | 4.49 | 32,293 |
| People Who Died Young #1 | 0 | - | 4.24 | 61,857 |
| Deaths by Date and Cause #1 | 0 | - | 4.39 | 77,996 |
| Deaths by Date and Cause #2 | 0 | - | 4.04 | 50,309 |
| Famous Firsts #1 | 0 | - | 4.42 | 65,948 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 66,714 |
| Invasions | 0 | - | 4.71 | 90,023 |
| First Names of Historical Figures #1 | 0 | - | 4.41 | 217,463 |
| This Day in History - May | 0 | - | 4.30 | 47,016 |
| This Day in History - June | 0 | - | 4.34 | 32,675 |
| This Day in History - November | 0 | - | 4.23 | 32,634 |
| This Day in History - December | 0 | - | 4.30 | 39,212 |
| The 19th Century | 0 | - | 4.50 | 62,466 |
| The 18th Century | 0 | - | 4.49 | 43,133 |
| The 16th Century | 0 | - | 4.71 | 49,999 |
| The 21st Century | 0 | - | 4.50 | 94,582 |
| History by Picture - N | 0 | - | 4.41 | 36,793 |
| History Multiple Choice #1 | 0 | - | 4.44 | 76,369 |
| History Multiple Choice #2 | 0 | - | 4.43 | 47,067 |
| History Multiple Choice #3 | 0 | - | 4.45 | 46,005 |
| English Monarchs Quiz | 0 | - | 4.91 | 450,750 |
