| Prime Ministers of the UK | 0 | - | 4.95 | 437,736 |
| First Names of Recent World Leaders | 0 | - | 4.25 | 24,958 |
| Political Figures by Last Name #2 | 0 | - | 3.88 | 16,694 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 488,478 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 711,864 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,418 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,359 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,845 |
| World Leaders by Picture | 0 | - | 4.36 | 264,801 |
| Famous Dictators #1 | 0 | - | 4.69 | 199,435 |
| Dictators by Picture | 0 | - | 4.18 | 49,077 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,347 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,173 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,376 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,757 |
| Words for Leaders | 0 | - | 4.77 | 256,747 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,914 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,368 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,830 |
| Brand Logos Quiz #1 | 0 | - | 4.82 | 2,417,326 |
| Spouses of World Leaders | 0 | - | 4.18 | 12,313 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,801 |
| UN Secretaries-General | 0 | - | 4.40 | 7,783 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,593 |
| Biblical Names Still Popular Today | 0 | - | 4.28 | 51,343 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,745 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,049 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,645 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,754 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 142,240 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,241 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,763 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,759 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,576 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,007 |
| Superhero Nicknames | 0 | - | 4.21 | 61,512 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,515 |
| Empires by Maps | 0 | - | 4.98 | 119,923 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,797 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 94,832 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.20 | 48,617 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,306 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,881 |
| Countries of the Popes | 0 | - | 4.79 | 127,852 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,596 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,321 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,992 |
| NFL Football Last Names | 0 | - | 4.43 | 171,328 |
| Bible Quotes Quiz #1 | 0 | - | 4.42 | 61,794 |
| Bible Quotes Quiz #3 | 0 | - | 4.47 | 43,502 |
| Brand Logos Quiz #2 | 0 | - | 4.70 | 1,687,309 |
| Brand Logos Quiz #4 | 0 | - | 4.45 | 1,010,917 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,294 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,819 |
| Metals of Antiquity | 0 | - | 4.94 | 93,290 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,575 |
| History: What Came First? #1 | 0 | - | 4.87 | 105,049 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,439 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,577 |
| First Names of Painters | 0 | - | 4.43 | 59,796 |
| Political Movements by Country | 0 | - | 4.46 | 72,461 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,140 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,179 |
| World City Nicknames Quiz | 0 | - | 4.16 | 35,559 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,458 |
| Game of Thrones Last Names | 0 | - | 4.50 | 102,505 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 225,218 |
| Name the Constellations | 0 | - | 4.58 | 44,911 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,867 |
| Influential Women in History | 0 | - | 4.42 | 35,495 |
| Cradles of Civilization | 0 | - | 4.46 | 39,544 |
| Materials From History #1 | 0 | - | 4.56 | 51,475 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,531 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,914 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,408 |
| Biggest Nations and Empires Ever | 0 | - | 4.52 | 145,723 |
| Famous Explorers | 0 | - | 4.58 | 36,116 |
| Famous Empires by Description | 0 | - | 4.73 | 118,314 |
| Answers by Time Period | 0 | - | 4.63 | 55,508 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,244 |
| NATO Countries | 0 | - | 4.98 | 279,167 |
| EU Countries Quiz | 0 | - | 4.99 | 272,795 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,917 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,500 |
| NBA Basketball Nicknames Quiz #1 | 0 | - | 4.23 | 149,149 |
| NBA Basketball Nicknames #2 | 0 | - | 4.09 | 57,507 |
| Countries as U.S. First Names | 0 | - | 4.31 | 77,739 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,630 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,706 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,582 |
| NBA Players by Last Name | 0 | - | 4.30 | 84,538 |
| Bible Quotes Quiz #2 | 0 | - | 4.27 | 52,864 |
| Bible Quotes Quiz #4 | 0 | - | 4.33 | 33,493 |
| The Bible - Who Said That? | 0 | - | 4.51 | 24,660 |
| American Corporate Slogans #1 | 0 | - | 4.06 | 65,321 |
| American Corporate Slogans #2 | 0 | - | 4.06 | 59,698 |
| Highest Grossing Superhero Movies | 0 | - | 4.38 | 166,486 |
| MCU Actors by Picture | 0 | - | 4.44 | 83,864 |
| Marketing Slogans for Animals | 0 | - | 4.48 | 29,220 |
| Brand Logos Quiz #5 | 0 | - | 4.37 | 1,062,792 |
| Brand Logos Quiz #6 | 0 | - | 4.31 | 782,890 |
| Strongest Nation Brands | 0 | - | 4.50 | 37,527 |
| Brand Logos Quiz #3 | 0 | - | 4.33 | 1,223,716 |
| Brand Logos Quiz #8 | 0 | - | 4.36 | 530,020 |
| Brand Logos Quiz #7 | 0 | - | 4.37 | 608,489 |
| Random Brand Logos | 0 | - | 4.44 | 401,659 |
| Name a Valid Answer - British History | 0 | - | 4.57 | 15,133 |
| Former Flags | 0 | - | 4.97 | 107,450 |
| Years in History by Picture | 0 | - | 4.44 | 35,433 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,512 |
| Materials From History #2 | 0 | - | 4.59 | 31,452 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,870 |
| Pope Facts | 0 | - | 4.39 | 31,198 |
| Flags of WW1 | 0 | - | 4.60 | 38,279 |
| Cold War Decoder | 0 | - | 4.83 | 52,246 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,385 |
| Events in History #2 | 0 | - | 4.49 | 71,636 |
| Events in History #4 | 0 | - | 4.44 | 44,260 |
| Name a Valid Year in History | 0 | - | 4.93 | 67,014 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,954 |
| Assassinations in History | 0 | - | 4.21 | 66,151 |
| Famous Seconds | 0 | - | 4.22 | 46,544 |
| Ages and Eras | 0 | - | 4.39 | 67,646 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,470 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,759 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,141 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,954 |
| Female Historical Figures | 0 | - | 4.28 | 33,222 |
| Historical Blunders | 0 | - | 4.34 | 91,886 |
| Territorial Accessions | 0 | - | 4.36 | 34,760 |
| People Known as "The Great" | 0 | - | 4.46 | 24,634 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,213 |
| Political Quotes | 0 | - | 4.17 | 19,870 |
| This Day in History - July | 0 | - | 4.49 | 36,434 |
| This Day in History - August | 0 | - | 4.42 | 43,334 |
| This Day in History - September | 0 | - | 4.55 | 57,397 |
| This Day in History - October | 0 | - | 4.49 | 37,605 |
| This Day in History - January | 0 | - | 4.50 | 46,676 |
| This Day in History - March | 0 | - | 4.45 | 43,633 |
| Ancient Civilizations | 0 | - | 4.64 | 37,914 |
| Military History Vocabulary | 0 | - | 4.91 | 67,022 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,899 |
| The Places They Went #1 | 0 | - | 4.74 | 33,504 |
| Famous Inventors | 0 | - | 4.44 | 43,520 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,803 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,464 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,013,083 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,148 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,736 |
| Unusual NBA Names | 0 | - | 3.80 | 191,613 |
| Unusual NFL First Names | 0 | - | 3.60 | 47,680 |
| NFL Team Nicknames | 0 | - | 3.89 | 93,004 |
| Country Nicknames | 0 | - | 3.95 | 97,896 |
| Rappers Real Names | 0 | - | 4.09 | 71,425 |
| Quotes of Jesus | 0 | - | 4.23 | 13,811 |
| Horror Movie Quotes Quiz | 0 | - | 4.19 | 51,197 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,013 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,649 |
| MCU Characters by Screen Time | 0 | - | 4.23 | 108,447 |
| Brand-Name Animals | 0 | - | 4.16 | 74,448 |
| Clothing Brand Logos | 0 | - | 4.24 | 223,525 |
| European Cities by Wikipedia Descriptions | 0 | - | 4.45 | 54,720 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,021 |
| Soft Drink Brand Logos | 0 | - | 4.23 | 174,811 |
| Countries Mentioned in the Bible | 0 | - | 4.96 | 66,787 |
| The 2nd Millennium BC | 0 | - | 4.64 | 20,807 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,245 |
| History Analogies #1 | 0 | - | 4.53 | 89,913 |
| History Analogies #2 | 0 | - | 4.49 | 77,158 |
| Current Events by Year, 1990–2009 | 0 | - | 4.77 | 152,481 |
| Current Events by Year, 1970–1989 | 0 | - | 4.56 | 65,118 |
| Current Events by Year, 1930–1949 | 0 | - | 4.48 | 52,049 |
| Groups of Things - History #1 | 0 | - | 4.41 | 93,997 |
| History Analogies #3 | 0 | - | 4.61 | 80,602 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,386 |
| Which Came First? | 0 | - | 4.37 | 74,701 |
| Random History by Country | 0 | - | 4.53 | 34,809 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,803 |
| Animals in World History | 0 | - | 4.74 | 44,426 |
| Places - Real or Fictional? | 0 | - | 4.59 | 49,535 |
| History True or False #3 | 0 | - | 4.43 | 56,744 |
| A to Z: Legendary Creatures | 0 | - | 4.26 | 52,961 |
| Arthurian Legend | 0 | - | 4.33 | 25,094 |
| WWII Geography | 0 | - | 4.81 | 120,103 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,364 |
| WWII Figures by Picture | 0 | - | 4.89 | 65,084 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,644 |
| Cold War Trivia #1 | 0 | - | 4.42 | 57,203 |
| Events in History #3 | 0 | - | 4.40 | 71,638 |
| Events in History #1 | 0 | - | 4.34 | 157,619 |
| Events in Ancient History | 0 | - | 4.50 | 35,924 |
| People Who Died Young #1 | 0 | - | 4.24 | 63,638 |
| Deaths by Date and Cause #1 | 0 | - | 4.38 | 95,141 |
| Deaths by Date and Cause #2 | 0 | - | 4.15 | 67,697 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,982 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,309 |
| This Day in History - April | 0 | - | 4.40 | 44,444 |
| This Day in History - May | 0 | - | 4.33 | 48,341 |
| This Day in History - June | 0 | - | 4.32 | 33,487 |
| This Day in History - November | 0 | - | 4.24 | 33,590 |
