| Prime Ministers of the UK | 0 | - | 4.96 | 434,249 |
| First Names of Recent World Leaders | 0 | - | 4.25 | 24,835 |
| Political Figures by Last Name #2 | 0 | - | 3.88 | 16,578 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 486,233 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 709,275 |
| Canadian Prime Ministers | 0 | - | 4.63 | 56,991 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,097 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,655 |
| World Leaders by Picture | 0 | - | 4.36 | 263,235 |
| Famous Dictators #1 | 0 | - | 4.69 | 198,664 |
| Dictators by Picture | 0 | - | 4.18 | 48,841 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,208 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,038 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,178 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,437 |
| Words for Leaders | 0 | - | 4.77 | 254,964 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,610 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,061 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,746 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,399,758 |
| Spouses of World Leaders | 0 | - | 4.18 | 12,283 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,637 |
| UN Secretaries-General | 0 | - | 4.40 | 7,756 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,535 |
| Biblical Names Still Popular Today | 0 | - | 4.27 | 51,093 |
| "Second Best" History Edition | 0 | - | 4.94 | 61,656 |
| Paramount Leaders of China | 0 | - | 4.36 | 10,990 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,565 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,896 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 141,265 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,106 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,264 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,620 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,289 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,783 |
| Superhero Nicknames | 0 | - | 4.21 | 61,194 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,367 |
| Empires by Maps | 0 | - | 4.98 | 118,246 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,639 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,374 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.18 | 47,136 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,248 |
| Name the Popes Quiz | 0 | - | 4.47 | 136,999 |
| Countries of the Popes | 0 | - | 4.79 | 127,109 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,165 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,051 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,573 |
| NFL Football Last Names | 0 | - | 4.43 | 170,469 |
| Bible Quotes Quiz #1 | 0 | - | 4.41 | 61,246 |
| Bible Quotes Quiz #3 | 0 | - | 4.47 | 43,177 |
| Brand Logos Quiz #2 | 0 | - | 4.69 | 1,678,231 |
| Brand Logos Quiz #4 | 0 | - | 4.45 | 1,005,225 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,102 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,335 |
| Metals of Antiquity | 0 | - | 4.94 | 92,835 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,109 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,091 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,268 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,073 |
| First Names of Painters | 0 | - | 4.43 | 59,582 |
| Political Movements by Country | 0 | - | 4.46 | 72,236 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,236 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,620 |
| World City Nicknames Quiz | 0 | - | 4.19 | 35,452 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,243 |
| Game of Thrones Last Names | 0 | - | 4.51 | 101,927 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 223,363 |
| Name the Constellations | 0 | - | 4.58 | 44,630 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,407 |
| Influential Women in History | 0 | - | 4.42 | 34,911 |
| Cradles of Civilization | 0 | - | 4.46 | 38,970 |
| Materials From History #1 | 0 | - | 4.56 | 50,532 |
| Historical Countries by Ruler | 0 | - | 4.48 | 47,998 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,808 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,298 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,083 |
| Famous Explorers | 0 | - | 4.58 | 35,921 |
| Famous Empires by Description | 0 | - | 4.70 | 117,479 |
| Answers by Time Period | 0 | - | 4.63 | 55,234 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,919 |
| NATO Countries | 0 | - | 4.98 | 275,304 |
| EU Countries Quiz | 0 | - | 4.99 | 269,593 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,718 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,366 |
| NBA Basketball Nicknames Quiz #1 | 0 | - | 4.23 | 148,414 |
| NBA Basketball Nicknames #2 | 0 | - | 4.09 | 57,151 |
| Countries as U.S. First Names | 0 | - | 4.31 | 77,308 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,424 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,487 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,464 |
| NBA Players by Last Name | 0 | - | 4.30 | 83,819 |
| Bible Quotes Quiz #2 | 0 | - | 4.27 | 52,476 |
| Bible Quotes Quiz #4 | 0 | - | 4.33 | 33,268 |
| The Bible - Who Said That? | 0 | - | 4.51 | 24,475 |
| American Corporate Slogans #1 | 0 | - | 4.06 | 65,164 |
| American Corporate Slogans #2 | 0 | - | 4.06 | 59,597 |
| Highest Grossing Superhero Movies | 0 | - | 4.37 | 165,795 |
| MCU Actors by Picture | 0 | - | 4.44 | 82,993 |
| Marketing Slogans for Animals | 0 | - | 4.48 | 29,106 |
| Brand Logos Quiz #5 | 0 | - | 4.38 | 1,057,311 |
| Brand Logos Quiz #6 | 0 | - | 4.32 | 778,306 |
| Strongest Nation Brands | 0 | - | 4.50 | 37,316 |
| Brand Logos Quiz #3 | 0 | - | 4.32 | 1,217,652 |
| Brand Logos Quiz #8 | 0 | - | 4.36 | 526,839 |
| Brand Logos Quiz #7 | 0 | - | 4.37 | 605,030 |
| Random Brand Logos | 0 | - | 4.45 | 399,217 |
| Name a Valid Answer - British History | 0 | - | 4.57 | 15,065 |
| Former Flags | 0 | - | 4.97 | 106,563 |
| Years in History by Picture | 0 | - | 4.44 | 35,064 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,157 |
| Materials From History #2 | 0 | - | 4.59 | 30,896 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,493 |
| Pope Facts | 0 | - | 4.39 | 31,019 |
| Flags of WW1 | 0 | - | 4.60 | 37,898 |
| Cold War Decoder | 0 | - | 4.83 | 51,894 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,302 |
| Events in History #2 | 0 | - | 4.49 | 71,390 |
| Events in History #4 | 0 | - | 4.44 | 44,078 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,296 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,790 |
| Assassinations in History | 0 | - | 4.20 | 65,926 |
| Famous Seconds | 0 | - | 4.22 | 46,370 |
| Ages and Eras Quiz | 0 | - | 4.38 | 67,423 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,378 |
| Titled People Quiz #1 | 0 | - | 4.10 | 45,590 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,011 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,808 |
| Female Historical Figures | 0 | - | 4.31 | 33,080 |
| Historical Blunders | 0 | - | 4.33 | 91,638 |
| Territorial Accessions | 0 | - | 4.38 | 34,614 |
| People Known as "The Great" | 0 | - | 4.46 | 24,495 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,064 |
| Political Quotes | 0 | - | 4.17 | 19,799 |
| This Day in History - July | 0 | - | 4.49 | 36,361 |
| This Day in History - August | 0 | - | 4.42 | 43,234 |
| This Day in History - September | 0 | - | 4.55 | 57,242 |
| This Day in History - October | 0 | - | 4.49 | 37,545 |
| This Day in History - January | 0 | - | 4.53 | 46,557 |
| This Day in History - March | 0 | - | 4.45 | 43,529 |
| Ancient Civilizations | 0 | - | 4.63 | 37,730 |
| Military History Vocabulary | 0 | - | 4.91 | 66,605 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,653 |
| The Places They Went #1 | 0 | - | 4.74 | 33,437 |
| Famous Inventors | 0 | - | 4.43 | 43,443 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,429 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,046 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,010,158 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,224 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,523 |
| Unusual NBA Names | 0 | - | 3.80 | 190,997 |
| Unusual NFL First Names | 0 | - | 3.60 | 47,563 |
| NFL Team Nicknames | 0 | - | 3.89 | 92,800 |
| Country Nicknames | 0 | - | 3.95 | 97,759 |
| Rappers Real Names | 0 | - | 4.08 | 68,908 |
| Quotes of Jesus | 0 | - | 4.23 | 13,695 |
| Horror Movie Quotes Quiz | 0 | - | 4.19 | 51,032 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,843 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,088 |
| MCU Characters by Screen Time | 0 | - | 4.22 | 107,324 |
| Brand-Name Animals | 0 | - | 4.16 | 74,253 |
| Clothing Brand Logos | 0 | - | 4.24 | 221,812 |
| European Cities by Wikipedia Descriptions | 0 | - | 4.45 | 54,546 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,270 |
| Soft Drink Brand Logos | 0 | - | 4.24 | 173,758 |
| Countries Mentioned in the Bible | 0 | - | 4.96 | 65,984 |
| The 2nd Millennium BC | 0 | - | 4.64 | 20,682 |
| Body Parts in History and Culture | 0 | - | 4.42 | 35,009 |
| History Analogies #1 | 0 | - | 4.53 | 89,754 |
| History Analogies #2 | 0 | - | 4.49 | 76,974 |
| Current Events by Year, 1990–2009 | 0 | - | 4.77 | 152,078 |
| Current Events by Year, 1970–1989 | 0 | - | 4.56 | 64,933 |
| Current Events by Year, 1930–1949 | 0 | - | 4.48 | 51,913 |
| History Analogies #3 | 0 | - | 4.61 | 80,410 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,108 |
| Which Came First? | 0 | - | 4.37 | 74,372 |
| Random History by Country | 0 | - | 4.53 | 34,638 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,510 |
| Animals in World History | 0 | - | 4.74 | 44,198 |
| Places - Real or Fictional? | 0 | - | 4.59 | 49,334 |
| History True or False #3 | 0 | - | 4.43 | 55,883 |
| A to Z: Legendary Creatures | 0 | - | 4.26 | 52,713 |
| Arthurian Legend | 0 | - | 4.33 | 25,047 |
| WWII Geography | 0 | - | 4.81 | 119,283 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,079 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,445 |
| Territory Changes in World War I | 0 | - | 4.86 | 46,188 |
| Cold War Trivia #1 | 0 | - | 4.41 | 56,910 |
| Events in History #3 | 0 | - | 4.40 | 71,419 |
| Events in History #1 | 0 | - | 4.34 | 157,210 |
| Events in Ancient History | 0 | - | 4.50 | 35,678 |
| People Who Died Young #1 | 0 | - | 4.24 | 63,519 |
| Deaths by Date and Cause #1 | 0 | - | 4.37 | 94,860 |
| Deaths by Date and Cause #2 | 0 | - | 4.15 | 67,451 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,500 |
| Countries That Were Invaded | 0 | - | 4.54 | 96,877 |
| This Day in History - April | 0 | - | 4.40 | 44,382 |
| This Day in History - May | 0 | - | 4.33 | 48,238 |
| This Day in History - June | 0 | - | 4.36 | 33,425 |
| This Day in History - November | 0 | - | 4.24 | 33,527 |
| This Day in History - December | 0 | - | 4.32 | 40,442 |
