| Prime Ministers of the UK | 0 | - | 4.96 | 434,052 |
| First Names of Recent World Leaders | 0 | - | 4.25 | 24,826 |
| Political Figures by Last Name #2 | 0 | - | 3.88 | 16,574 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 486,125 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 709,141 |
| Canadian Prime Ministers | 0 | - | 4.63 | 56,960 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,085 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,640 |
| World Leaders by Picture | 0 | - | 4.36 | 263,153 |
| Famous Dictators #1 | 0 | - | 4.69 | 198,613 |
| Dictators by Picture | 0 | - | 4.17 | 48,832 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,198 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,027 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,163 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,421 |
| Words for Leaders | 0 | - | 4.77 | 254,871 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,595 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,036 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,736 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,398,762 |
| Spouses of World Leaders | 0 | - | 4.18 | 12,278 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,626 |
| UN Secretaries-General | 0 | - | 4.40 | 7,755 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,530 |
| Biblical Names Still Popular Today | 0 | - | 4.27 | 51,086 |
| "Second Best" History Edition | 0 | - | 4.93 | 61,614 |
| Paramount Leaders of China | 0 | - | 4.36 | 10,985 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,560 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,843 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 141,218 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,096 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,238 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,613 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,279 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,779 |
| Superhero Nicknames | 0 | - | 4.21 | 61,176 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,303 |
| Empires by Maps | 0 | - | 4.98 | 118,149 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,633 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,351 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.18 | 46,865 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,239 |
| Name the Popes Quiz | 0 | - | 4.47 | 136,946 |
| Countries of the Popes | 0 | - | 4.79 | 127,067 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,143 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,034 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,544 |
| NFL Football Last Names | 0 | - | 4.43 | 170,417 |
| Bible Quotes Quiz #1 | 0 | - | 4.41 | 61,229 |
| Bible Quotes Quiz #3 | 0 | - | 4.47 | 43,169 |
| Brand Logos Quiz #2 | 0 | - | 4.69 | 1,677,700 |
| Brand Logos Quiz #4 | 0 | - | 4.45 | 1,004,916 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 217,975 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,257 |
| Metals of Antiquity | 0 | - | 4.94 | 92,811 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,082 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,057 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,259 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 703,958 |
| First Names of Painters | 0 | - | 4.43 | 59,570 |
| Political Movements by Country | 0 | - | 4.46 | 72,224 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,079 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,604 |
| World City Nicknames Quiz | 0 | - | 4.19 | 35,446 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,229 |
| Game of Thrones Last Names | 0 | - | 4.51 | 101,896 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 223,261 |
| Name the Constellations | 0 | - | 4.58 | 44,621 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,393 |
| Influential Women in History | 0 | - | 4.42 | 34,894 |
| Cradles of Civilization | 0 | - | 4.46 | 38,948 |
| Materials From History #1 | 0 | - | 4.56 | 50,516 |
| Historical Countries by Ruler | 0 | - | 4.48 | 47,979 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,806 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,292 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,065 |
| Famous Explorers | 0 | - | 4.58 | 35,909 |
| Famous Empires by Description | 0 | - | 4.70 | 117,461 |
| Answers by Time Period | 0 | - | 4.63 | 55,224 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,906 |
| NATO Countries | 0 | - | 4.98 | 275,096 |
| EU Countries Quiz | 0 | - | 4.99 | 269,414 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,705 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,364 |
| NBA Basketball Nicknames Quiz #1 | 0 | - | 4.23 | 148,373 |
| NBA Basketball Nicknames #2 | 0 | - | 4.09 | 57,133 |
| Countries as U.S. First Names | 0 | - | 4.31 | 77,293 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,418 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,481 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,460 |
| NBA Players by Last Name | 0 | - | 4.30 | 83,784 |
| Bible Quotes Quiz #2 | 0 | - | 4.27 | 52,468 |
| Bible Quotes Quiz #4 | 0 | - | 4.33 | 33,263 |
| The Bible - Who Said That? | 0 | - | 4.51 | 24,471 |
| American Corporate Slogans #1 | 0 | - | 4.06 | 65,159 |
| American Corporate Slogans #2 | 0 | - | 4.06 | 59,593 |
| Highest Grossing Superhero Movies | 0 | - | 4.37 | 165,756 |
| MCU Actors by Picture | 0 | - | 4.44 | 82,945 |
| Marketing Slogans for Animals | 0 | - | 4.48 | 29,105 |
| Brand Logos Quiz #5 | 0 | - | 4.38 | 1,057,021 |
| Brand Logos Quiz #6 | 0 | - | 4.32 | 778,045 |
| Strongest Nation Brands | 0 | - | 4.50 | 37,303 |
| Brand Logos Quiz #3 | 0 | - | 4.32 | 1,217,323 |
| Brand Logos Quiz #8 | 0 | - | 4.36 | 526,660 |
| Brand Logos Quiz #7 | 0 | - | 4.36 | 604,843 |
| Random Brand Logos | 0 | - | 4.45 | 399,048 |
| Name a Valid Answer - British History | 0 | - | 4.57 | 15,064 |
| Former Flags | 0 | - | 4.97 | 106,526 |
| Years in History by Picture | 0 | - | 4.44 | 35,047 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,145 |
| Materials From History #2 | 0 | - | 4.59 | 30,892 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,481 |
| Pope Facts | 0 | - | 4.39 | 31,012 |
| Flags of WW1 | 0 | - | 4.60 | 37,867 |
| Cold War Decoder | 0 | - | 4.83 | 51,875 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,297 |
| Events in History #2 | 0 | - | 4.49 | 71,377 |
| Events in History #4 | 0 | - | 4.44 | 44,068 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,264 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,784 |
| Assassinations in History | 0 | - | 4.20 | 65,916 |
| Famous Seconds | 0 | - | 4.22 | 46,363 |
| Ages and Eras Quiz | 0 | - | 4.38 | 67,416 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,375 |
| Titled People Quiz #1 | 0 | - | 4.10 | 45,583 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,003 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,799 |
| Female Historical Figures | 0 | - | 4.31 | 33,069 |
| Historical Blunders | 0 | - | 4.33 | 91,634 |
| Territorial Accessions | 0 | - | 4.38 | 34,611 |
| People Known as "The Great" | 0 | - | 4.46 | 24,489 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,061 |
| Political Quotes | 0 | - | 4.17 | 19,798 |
| This Day in History - July | 0 | - | 4.49 | 36,355 |
| This Day in History - August | 0 | - | 4.41 | 43,232 |
| This Day in History - September | 0 | - | 4.55 | 57,233 |
| This Day in History - October | 0 | - | 4.49 | 37,542 |
| This Day in History - January | 0 | - | 4.53 | 46,550 |
| This Day in History - March | 0 | - | 4.45 | 43,524 |
| Ancient Civilizations | 0 | - | 4.63 | 37,722 |
| Military History Vocabulary | 0 | - | 4.91 | 66,574 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,640 |
| The Places They Went #1 | 0 | - | 4.74 | 33,432 |
| Famous Inventors | 0 | - | 4.43 | 43,439 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,405 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,038 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,009,974 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,150 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,515 |
| Unusual NBA Names | 0 | - | 3.80 | 190,963 |
| Unusual NFL First Names | 0 | - | 3.60 | 47,559 |
| NFL Team Nicknames | 0 | - | 3.89 | 92,785 |
| Country Nicknames | 0 | - | 3.95 | 97,755 |
| Rappers Real Names | 0 | - | 4.08 | 68,884 |
| Quotes of Jesus | 0 | - | 4.23 | 13,691 |
| Horror Movie Quotes Quiz | 0 | - | 4.19 | 51,025 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,551 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,048 |
| MCU Characters by Screen Time | 0 | - | 4.22 | 107,270 |
| Brand-Name Animals | 0 | - | 4.16 | 74,239 |
| Clothing Brand Logos | 0 | - | 4.24 | 221,722 |
| European Cities by Wikipedia Descriptions | 0 | - | 4.45 | 54,541 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,245 |
| Soft Drink Brand Logos | 0 | - | 4.24 | 173,695 |
| Countries Mentioned in the Bible | 0 | - | 4.96 | 65,949 |
| The 2nd Millennium BC | 0 | - | 4.64 | 20,674 |
| Body Parts in History and Culture | 0 | - | 4.42 | 34,993 |
| History Analogies #1 | 0 | - | 4.53 | 89,744 |
| History Analogies #2 | 0 | - | 4.49 | 76,964 |
| Current Events by Year, 1990–2009 | 0 | - | 4.77 | 152,061 |
| Current Events by Year, 1970–1989 | 0 | - | 4.56 | 64,926 |
| Current Events by Year, 1930–1949 | 0 | - | 4.48 | 51,905 |
| History Analogies #3 | 0 | - | 4.61 | 80,399 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,095 |
| Which Came First? | 0 | - | 4.37 | 74,358 |
| Random History by Country | 0 | - | 4.53 | 34,635 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,495 |
| Animals in World History | 0 | - | 4.74 | 44,186 |
| Places - Real or Fictional? | 0 | - | 4.59 | 49,325 |
| History True or False #3 | 0 | - | 4.43 | 55,873 |
| A to Z: Legendary Creatures | 0 | - | 4.26 | 52,701 |
| Arthurian Legend | 0 | - | 4.33 | 25,045 |
| WWII Geography | 0 | - | 4.81 | 119,255 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,069 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,406 |
| Territory Changes in World War I | 0 | - | 4.86 | 46,173 |
| Cold War Trivia #1 | 0 | - | 4.41 | 56,898 |
| Events in History #3 | 0 | - | 4.40 | 71,406 |
| Events in History #1 | 0 | - | 4.34 | 157,187 |
| Events in Ancient History | 0 | - | 4.50 | 35,668 |
| People Who Died Young #1 | 0 | - | 4.24 | 63,516 |
| Deaths by Date and Cause #1 | 0 | - | 4.37 | 94,836 |
| Deaths by Date and Cause #2 | 0 | - | 4.15 | 67,435 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,480 |
| Countries That Were Invaded | 0 | - | 4.54 | 96,864 |
| This Day in History - April | 0 | - | 4.39 | 44,376 |
| This Day in History - May | 0 | - | 4.32 | 48,235 |
| This Day in History - June | 0 | - | 4.35 | 33,423 |
| This Day in History - November | 0 | - | 4.24 | 33,521 |
| This Day in History - December | 0 | - | 4.31 | 40,440 |
