| Prime Ministers of the UK | 0 | - | 4.95 | 437,327 |
| Political Figures by Last Name #2 | 0 | - | 3.88 | 16,677 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 488,243 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 711,587 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,381 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,329 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,826 |
| World Leaders by Picture | 0 | - | 4.36 | 264,626 |
| Famous Dictators #1 | 0 | - | 4.69 | 199,372 |
| Dictators by Picture | 0 | - | 4.18 | 49,058 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,330 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,161 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,356 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,731 |
| Words for Leaders | 0 | - | 4.77 | 256,581 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,883 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,337 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,825 |
| Brand Logos Quiz #1 | 0 | - | 4.82 | 2,415,514 |
| Spouses of World Leaders | 0 | - | 4.18 | 12,308 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,787 |
| UN Secretaries-General | 0 | - | 4.40 | 7,781 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,588 |
| Biblical Names Still Popular Today | 0 | - | 4.28 | 51,321 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,668 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,049 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,639 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,667 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 142,159 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,233 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,723 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,748 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,551 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,989 |
| Superhero Nicknames | 0 | - | 4.21 | 61,482 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,425 |
| Empires by Maps | 0 | - | 4.98 | 119,793 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,780 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 94,786 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.20 | 48,540 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,301 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,800 |
| Countries of the Popes | 0 | - | 4.79 | 127,772 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,547 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,300 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,953 |
| NFL Football Last Names | 0 | - | 4.43 | 171,283 |
| Bible Quotes Quiz #1 | 0 | - | 4.41 | 61,760 |
| Bible Quotes Quiz #3 | 0 | - | 4.47 | 43,477 |
| Brand Logos Quiz #2 | 0 | - | 4.70 | 1,686,389 |
| Brand Logos Quiz #4 | 0 | - | 4.45 | 1,010,319 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,132 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,698 |
| Metals of Antiquity | 0 | - | 4.94 | 93,244 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,535 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,996 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,423 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,347 |
| First Names of Painters | 0 | - | 4.43 | 59,782 |
| Political Movements by Country | 0 | - | 4.46 | 72,435 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,777 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,140 |
| World City Nicknames Quiz | 0 | - | 4.16 | 35,553 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,434 |
| Game of Thrones Last Names | 0 | - | 4.51 | 102,393 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 225,040 |
| Name the Constellations | 0 | - | 4.58 | 44,883 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,841 |
| Influential Women in History | 0 | - | 4.42 | 35,457 |
| Cradles of Civilization | 0 | - | 4.46 | 39,509 |
| Materials From History #1 | 0 | - | 4.56 | 51,434 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,493 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,903 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,403 |
| Biggest Nations and Empires Ever | 0 | - | 4.52 | 145,669 |
| Famous Explorers | 0 | - | 4.58 | 36,104 |
| Famous Empires by Description | 0 | - | 4.73 | 118,282 |
| Answers by Time Period | 0 | - | 4.64 | 55,489 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,219 |
| NATO Countries | 0 | - | 4.98 | 278,851 |
| EU Countries Quiz | 0 | - | 4.99 | 272,451 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,907 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,493 |
| NBA Basketball Nicknames Quiz #1 | 0 | - | 4.23 | 148,926 |
| NBA Basketball Nicknames #2 | 0 | - | 4.09 | 57,429 |
| Countries as U.S. First Names | 0 | - | 4.31 | 77,700 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,616 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,680 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,567 |
| NBA Players by Last Name | 0 | - | 4.30 | 84,463 |
| Bible Quotes Quiz #2 | 0 | - | 4.27 | 52,843 |
| Bible Quotes Quiz #4 | 0 | - | 4.33 | 33,477 |
| The Bible - Who Said That? | 0 | - | 4.51 | 24,638 |
| American Corporate Slogans #1 | 0 | - | 4.06 | 65,302 |
| American Corporate Slogans #2 | 0 | - | 4.06 | 59,684 |
| Highest Grossing Superhero Movies | 0 | - | 4.37 | 166,426 |
| MCU Actors by Picture | 0 | - | 4.44 | 83,789 |
| Marketing Slogans for Animals | 0 | - | 4.48 | 29,210 |
| Brand Logos Quiz #5 | 0 | - | 4.37 | 1,062,275 |
| Brand Logos Quiz #6 | 0 | - | 4.31 | 782,469 |
| Strongest Nation Brands | 0 | - | 4.50 | 37,503 |
| Brand Logos Quiz #3 | 0 | - | 4.33 | 1,223,042 |
| Brand Logos Quiz #8 | 0 | - | 4.36 | 529,710 |
| Brand Logos Quiz #7 | 0 | - | 4.37 | 608,150 |
| Random Brand Logos | 0 | - | 4.45 | 401,421 |
| Name a Valid Answer - British History | 0 | - | 4.57 | 15,121 |
| Former Flags | 0 | - | 4.97 | 107,375 |
| Years in History by Picture | 0 | - | 4.44 | 35,402 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,479 |
| Materials From History #2 | 0 | - | 4.59 | 31,438 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 31,848 |
| Pope Facts | 0 | - | 4.39 | 31,167 |
| Flags of WW1 | 0 | - | 4.60 | 38,249 |
| Cold War Decoder | 0 | - | 4.83 | 52,209 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,378 |
| Events in History #2 | 0 | - | 4.49 | 71,615 |
| Events in History #4 | 0 | - | 4.44 | 44,241 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,937 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,941 |
| Assassinations in History | 0 | - | 4.21 | 66,134 |
| Famous Seconds | 0 | - | 4.22 | 46,533 |
| Ages and Eras | 0 | - | 4.39 | 67,623 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,464 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,752 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,136 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,939 |
| Female Historical Figures | 0 | - | 4.28 | 33,211 |
| Historical Blunders | 0 | - | 4.34 | 91,870 |
| Territorial Accessions | 0 | - | 4.36 | 34,746 |
| People Known as "The Great" | 0 | - | 4.46 | 24,619 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,203 |
| Political Quotes | 0 | - | 4.17 | 19,862 |
| This Day in History - July | 0 | - | 4.49 | 36,431 |
| This Day in History - August | 0 | - | 4.42 | 43,330 |
| This Day in History - September | 0 | - | 4.55 | 57,385 |
| This Day in History - October | 0 | - | 4.49 | 37,600 |
| This Day in History - January | 0 | - | 4.50 | 46,664 |
| This Day in History - March | 0 | - | 4.45 | 43,622 |
| Ancient Civilizations | 0 | - | 4.64 | 37,888 |
| Military History Vocabulary | 0 | - | 4.91 | 66,970 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,876 |
| The Places They Went #1 | 0 | - | 4.74 | 33,501 |
| Famous Inventors | 0 | - | 4.43 | 43,508 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,766 |
| European History for Dummies | 0 | - | 4.83 | 89,701 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,419 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,012,840 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,057 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,695 |
| Unusual NBA Names | 0 | - | 3.80 | 191,549 |
| Unusual NFL First Names | 0 | - | 3.60 | 47,675 |
| NFL Team Nicknames | 0 | - | 3.89 | 92,987 |
| Country Nicknames | 0 | - | 3.95 | 97,883 |
| Rappers Real Names | 0 | - | 4.08 | 71,281 |
| Quotes of Jesus | 0 | - | 4.23 | 13,803 |
| Horror Movie Quotes Quiz | 0 | - | 4.19 | 51,184 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,325,115 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,592 |
| MCU Characters by Screen Time | 0 | - | 4.23 | 108,330 |
| Brand-Name Animals | 0 | - | 4.16 | 74,423 |
| Clothing Brand Logos | 0 | - | 4.24 | 223,348 |
| European Cities by Wikipedia Descriptions | 0 | - | 4.45 | 54,697 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,957 |
| Soft Drink Brand Logos | 0 | - | 4.23 | 174,691 |
| Countries Mentioned in the Bible | 0 | - | 4.96 | 66,709 |
| The 2nd Millennium BC | 0 | - | 4.64 | 20,795 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,233 |
| History Analogies #1 | 0 | - | 4.53 | 89,897 |
| History Analogies #2 | 0 | - | 4.49 | 77,140 |
| Current Events by Year, 1990–2009 | 0 | - | 4.77 | 152,442 |
| Current Events by Year, 1970–1989 | 0 | - | 4.56 | 65,102 |
| Current Events by Year, 1930–1949 | 0 | - | 4.48 | 52,033 |
| Groups of Things - History #1 | 0 | - | 4.41 | 93,951 |
| History Analogies #3 | 0 | - | 4.61 | 80,581 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,359 |
| Which Came First? | 0 | - | 4.37 | 74,676 |
| Random History by Country | 0 | - | 4.53 | 34,787 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,778 |
| Animals in World History | 0 | - | 4.74 | 44,407 |
| Places - Real or Fictional? | 0 | - | 4.59 | 49,514 |
| History True or False #3 | 0 | - | 4.43 | 56,704 |
| A to Z: Legendary Creatures | 0 | - | 4.26 | 52,934 |
| Arthurian Legend | 0 | - | 4.33 | 25,089 |
| WWII Geography | 0 | - | 4.81 | 120,047 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,339 |
| WWII Figures by Picture | 0 | - | 4.89 | 64,902 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,607 |
| Cold War Trivia #1 | 0 | - | 4.42 | 57,179 |
| Events in History #3 | 0 | - | 4.40 | 71,612 |
| Events in History #1 | 0 | - | 4.34 | 157,582 |
| Events in Ancient History | 0 | - | 4.50 | 35,900 |
| People Who Died Young #1 | 0 | - | 4.24 | 63,633 |
| Deaths by Date and Cause #1 | 0 | - | 4.38 | 95,111 |
| Deaths by Date and Cause #2 | 0 | - | 4.15 | 67,672 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,920 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,266 |
| This Day in History - April | 0 | - | 4.40 | 44,443 |
| This Day in History - May | 0 | - | 4.33 | 48,334 |
| This Day in History - June | 0 | - | 4.32 | 33,485 |
| This Day in History - November | 0 | - | 4.24 | 33,587 |
